Showing posts with label Global Warming. Show all posts
Showing posts with label Global Warming. Show all posts

Tuesday, April 7, 2020

Is Pandemic COVID-19 able to reduce environmental quality?

COVID 19 pandemic has made people around the world worry. Although the impact of COVID-19 was so great, behind the pandemic, the side effects made the blue sky and clear water in Venice to Beijing, Los Angeles to Bangalore

Improved air quality and the global environment are an unexpected impact of the economic slowdown caused by the Corona Virus pandemic COVID-19. This virus has pushed the wheels of the global economy to almost stop when the pandemic hit the world. The number of factories closed and cars parked in the garage, causing air pollution to subside in a number of cities in the world. As in the capital city of China, Beijing, known for its toxic levels that choke the lungs, has an unusual view of the clear sky because factories in the region are stopping production.

Satellite images from the European Space Agency (ESA) show reduced levels of nitrogen dioxide, a by-product of burning fossil fuels which causes respiratory problems. The scene was seen in all major cities on the continent including Paris, Madrid, and Rome when the countries locked down and restricted travel prevented the spread of COVID-19.

The international environmental organization Greenpeace said COVID-19 had a negative impact on trade and the economy. But there are positive effects for the Earth because the industrial activity is restrained, industrial pollution is reduced, and the quality of the environment increases.
Specifically in Jakarta, work from home (WFH) policies during the COVID-19 pandemic, as well as intense rainfall, have improved the capital's air quality. "The rain that fell in Jabodetabek also helped wash the atmosphere from pollution," said Head of the Jakarta Environment Agency, Andono Warih.

Twitter/Ryan_Nus

Based on monitoring at five Air Quality Monitoring Stations (SPKU) managed by the DKI Jakarta Environment Office, the results show improvements in air quality, especially decreasing concentrations of PM 2.5 parameters during WFH application. However, WFH is not a single factor to improve Jakarta's air quality. "This decrease is also consistent with the level of rainfall. When rainfall is high, the PM 2.5 parameter concentration shows a decrease and when the days are not raining, the PM 2.5 parameter concentration increases slightly," he said.

In addition, the wind direction also affects the pollutants of this type of PM 2.5 or fine dust particles measuring 25 micrograms / m³. AirVisual Air Quality Index (AQI) monitoring on April 2 at 20.25 WIB shows that Jakarta is ranked 33rd in the order of highly polluted cities, which means Jakarta's air quality is better than 32 other cities in the world, with the Air Quality Index ( AQI) at number 64


Source: https://www.liputan6.com

Monday, October 8, 2012

Climate change already harming the global economy


Never mind what's going to happen in 2100: climate change is already shrinking the global economy.
According to the Climate Vulnerability Monitor – a report by Spanish non-profit organisation DARA – in 2010 climate change shaved 1.6 per cent off global gross domestic product. The figure was calculated by adding the harmful effects of climate change to the problems of the carbon-based economy, such as air pollution.
Previous studies, such as the 2006 Stern Review, concluded that climate change would not become a net cost for decades. But they had not considered climate's impact on productivity. As the temperature increases,people work less well. "It has been assumed that a hotter living and working environment is nothing to worry about," says Tord Kjellström of Umeå University in Sweden. "But the 5 billion people living in the hot parts of this planet are already constrained by heat."
Climate change now costs more than the emissions cuts that are needed to tackle global warmingMovie Camera. Such cuts would cost 0.5 per cent of global GDP, whereas the cost of climate change will be 3.2 per cent of GDP by 2030. If the claims stand up, it boosts the case for urgent action, says Cameron Hepburnof the London School of Economics. "Caps on emissions should be much tighter, and carbon prices much higher, than they are now

Friday, July 15, 2011

How You Can Fight Global Warming at Home

There are steps you can take to fight global warming in your home and car. You do not have to wait for the government or big businesses to do something about it. It is better to take the initiative and do your part.
In your home, you can begin by changing your light bulbs. You do not have to do it all at once. Every time you change a bulb, though, you can replace the old incandescent bulb with a compact fluorescent. Not only does this reduce greenhouse gases, it also saves you money in the long run.

It has always been wise to seal and insulate your home, just for comfort's sake. Now, it is even more important. You can stop your home from emitting greenhouse gases and contributing to global warming by doing this. If you have any doubts about where your home needs insulation, you can hire an energy auditor to help you decide.

You can reduce global warming by simply taking care of the cooling and heating equipment in your home. You can change filters and have the equipment cleaned. Most importantly of all, when the heater or air-conditioner needs to be replaced, get an efficient model that is big enough for your dwelling.

In fact, it makes sense to buy all your appliances with energy efficiency in mind. Energy Star is a rating system that is reserved for efficient products. Buying such products will help decrease global warming.

Recycling is one of the easiest ways to help reduce global warming. Everyone can do it with little effort. You can also further the process by using products that are made from recycled materials.

You can help reduce global warming in your lawn, too. For one thing, you can use a push mower instead of a power mower. Since a push mower uses no energy but your own, this is a great savings. Even if you do use a power mower, you can still help. Use a mower that catches the grass clippings so you can mulch them.

As far as transportation, you can do so much more than buying a green car. You can drive it sensibly, with no rapid starts for instance, to help prevent global warming. If you keep your car well-maintained, it will be beneficial, too. Things like changing your oil and keeping your car tuned up can make a big difference in global warming.

Surprisingly, poorly inflated tires can lead to global warming. This happens because tires must have the proper amount of air in them for the car to reach maximum fuel efficiency. The less efficient your car is, the more it adds to global warming.

The best way to slow global warming by the way you use your car, is to make as few trips as possible. Walk when you can. When you have to drive, combine as many errands into one trip as possible.

If you fight global warming in your home and your car, you can make a difference. Some basic changes can be easily made. If everyone makes these simple changes, it can have a powerful impact on global warming.

Saturday, March 26, 2011

The Basics of Global Warming

Scientists, celebrities, and everyday people have been trying to understand the nature of global warming. Controversy is rampant and there is intense debate around the world on the subject. Since conclusions drawn could affect you profoundly, you may want to know some basic facts about the topic of global warming.



The most obvious thing that can be said about global warming is that the earth is getting warmer. Specifically, the temperatures near the surface of the earth and the temperatures in the ocean are rising. Since 1990, there have been 10 years that have been hotter than any others in recorded history.

The greenhouse effect is said to be responsible for global warming. The greenhouse effect causes certain vapors and gases to form a sort of blanket that covers and warms the earth. Water vapor, methane, carbon dioxide, and several other trace gases make up this blanket.

The greenhouse effect itself is not disputed. No controversy exists on this point because the greenhouse effect is recognized as an inherently beneficial process. If all the energy that struck the earth was reflected right back into space, no one could live on earth. This is what would happen without this blanket that is caused by acceptable levels of global warming.

However, global warming is not all good. It can cause the earth's covering to increase in density. With a denser blanket over the earth, less of the heat is reflected back into space. This upsets the delicate balance between heat and cold that is usually maintained on earth. It traps more heat inside the earth's atmosphere.

Although there are people who argue against it, there seems to be a change in the climate in recent years. Climate change to a warmer climate is the result of excessive global warming.

There has been an overall rise in temperature of a little over one degree Fahrenheit during the last century. The figure for this century is expected to be more like seven degrees. It is this type of global warming that can lead to dire consequences if left unchecked.

People, their activities, and their industries have caused global warming to reach the levels it has today. Burning fossil fuels, powering electrical plants with coal, and irresponsible land use can all contribute to global warming. Carbon dioxide is produced by these activities, and global warming is perpetuated.

Global warming could result in rising sea levels and flooding. There could be more powerful storms. Heat waves could become intense. Droughts could severely damage the world's crops and cause shortages of drinkable water. Extinction of species could become a problem because of changing habitats and the suitability of the climate for the animal.

The good news about global warming is that there are ways to slow the process down. Each person can take responsibility for doing their part in protecting the earth's environment. With everyone helping, emissions of greenhouse gases can be cut drastically. This will give the earth a chance to begin to regain its balance of temperature. Knowing about global warming can make you a better citizen of the world.


Monday, February 14, 2011

Live A Clean Green Life With Eco Friendly Products

by: Greenn Brown

Earth has a fantastic abundance of nature that is getting depleted every day. This is primarily happening due to human influence through wastes and dangerous man made products that are detrimental to nature. With an increase of inorganic and unnatural products, your life and the nature that surrounds you is in great jeopardy. In this scenario, you can create a change in your life and take the green road that will help in making your surroundings healthier. If you wish to lead a clean and green life then there are many interesting eco friendly products out there that you can consider.

From apparels and bags to jewelry and swimwear, you can opt for eco shopping options in all these areas. One of the primary areas in which you can bring about a drastic change in your life is with the sort of clothing you sport. Man made fabrics and textures are not only harmful to the environment, they can be really bad for your skin and your health. This is where the need has arisen for green clothing that is prepared from organic and natural raw materials. Not only do they take care of your skin in the gentlest manner, they are quite attractive and original too.

If you are a person who is always updated on the fashion trends, you will be one of those people who loves to sport trendy bags. In this area too you can take the green route as there are eco fashion bags and accessories that have come around with a unique look that will appeal to one and all. In terms of alternate clothing needs for swimwear too, you can get eco friendly options. By engaging in green shopping, you can get your hands on products that are truly healthy in every possible way.

One of the primary products that are always in demand is jewelry. You can get your kind of jewelry in many stores and outlets around you but you can now get green options for your ornamental needs too. With the option of environment friendly products in jewelry, nowadays you can sport a great look without harming the environment in any way. A lot of people need to use beauty products to take care of their look, the face and the body. Chemical products can be really detrimental for your skin in the long run and disposing them will cause great environmental hazards too. This is where you can get the ideal solutions by using beauty items made from natural products.

The world is taking a turn towards the green side as mankind is beginning to witness the side effects of ignoring nature. There are many human activities that contribute steadily in the deterioration of the environment. By opting to use organic products, you can bring about a significant change and promote the benefits of these wonderful options too. Nowadays, you can get your hands on a wide range of green items in an eco friendly store. With the help of the amazing advantages offered by these green avenues, you can lead a green life that will keep you and the nature protected
 
 
source: http://www.articlecity.com/articles/environment_and_going_green/article_1129.shtml 

Sunday, January 30, 2011

Solar Power to Energy – New Process

 by: Sam Braidley

Up to a few weeks back we knew only of a handful of processes to harness the immense sources of energy transmitted on to the earth surface. All forms of energy except perhaps nuclear energy, originated from the sun. (Sun it self is a huge nuclear reactor, come to think of it!) We have been converting this radiant energy to a form usable in a traditional application. But since time immemorial the most efficient conversion process has been photosynthesis by plant life with chlorophyll.

However much tried we have not been able so far to duplicate this seemingly simple chemical process.

However the latest news coming out from the Swiss and US solar researchers labs is that a new process has been developed which uses Water, Carbon dioxide and solar energy, to duplicate photosynthesis in a way (though not exact). As you know Hydrogen is the most efficient combustible fuel known to man but hitherto has not been able to produce or store safely and economically. Though not an exact copy of photosynthesis, the new process at least to a certain extend mimic it and provide high energy fuel of Hydrogen along with Carbon monoxide as end products.


The Hydrogen is expected to be used in fuel cells or as Syngas along with the Carbon Monoxide produced.

The device

Millions of hectares of green vegetation covering the earth’s surface is our life blood. They provide energy, clean our atmosphere, provide Oxygen for us to breath, keep the surface soil bound and many other known and unknown benefits. Our present technology is not yet competent enough to provide all these to us.

The new system that only partly mimic the natural process consists of a concentrated solar radiation collector, Porous Ceria (Cerium Oxide) lined vessel which is insulated with Alumina ( ie. the simple salt aluminium oxide), an inlet to the vessel interior for Carbon dioxide and water and an outlet at the bottom for hi efficiency fuels Hydrogen and Carbon Monoxide. The metal oxide Ceria is a rare earth element but is about the commonest in nature in the series.

The Process

Metal Oxide Ceria is a salt with a peculiar property. It imbibes oxygen when it’s temperature rises and releases oxygen when cools down. What the new device does is that it absorbs the heat from the concentrated solar radiation which passes through the quartz cover of the device. Porous ceria lines the inner surface of the chamber to which CO2 and Water is entered. The end products are Hydrogen and Carbon monoxide, both efficient fuels.

Currently the problem with Photovoltaic Solar panels and Thermal Solar panels is that they are static and the collected energy is difficult to transport or stored enmasse. The high efficient fuels of the new process earmarked for future environmentally friendly automobiles, air craft, industrial processes etc. provide ways to store them close by outdoors as well as within the place/machine of usage.

Just like for any volatile fuel or chemical these high energy fuels too will have to be stored or transported with extreme caution and due safety measures observed.

It is expected that the new device will provide solutions for many a current problem experienced with renewable energy usages. The major draw back presently is the low efficiency of the device. Swiss and US Scientists who are involved in this invention expect to have a break through in this regard soon.

Interestingly this machine can also be used to produce Methane too, another fuel whose energy content is less and easily adopted for domestic energy applications.
  

Monday, January 17, 2011

Global Warming

by Picofly

Climate change... Global warming call it any name. Am meant to understand that climate is changing rapidly in all the continents due to the effects of Global Warming. One of the encroached continents by this pandemic is Africa my motherland. So what''s next? In a recent Conference on Climate Changes and Global Warming in Kenya that went ahead, nations are trying find and sort out this rapid and malicious pandemic that might leave thousands and thousands of communities hopeless and homeless. Recently there have been persistent droughts and heavy rains causing floods and deadly menace in African countries that have left many communities in despair and lots of problems. Some have lost close relatives, friends and millions of properties due to the repercussions of these climatic changes. There are solutions in hand right now to drastically cut global warming pollution. Act now -- put clean, innovative energy technologies to use, and enact policies to encourage their rapid, widespread adoption -- and we can stop global warming in its tracks. Instead of nearly doubling U.S. global warming pollution by 2050, we can cut it by more than half using today''s technology. And with the proper incentives in place, even more innovative solutions will emerge along the way, leading to even bigger reductions. These measures such as boosting efficiency energy, use of better cars and smart growth, use of bio fuels and renewal energy as well as returning carbon to the ground are promising measures that would save our globe.

My friends is there hope for AFRICA? Moreover, is there hope for the entire GLOBE? Hope nations plus the whole communities in the entire globe came up with policies and framework on the implementation of these policies to safeguard our people and the nations at large. It''s time for all of us as nations be united to fight this pandemic for this would make our GLOBE a better place for all of us to live in. to get more on this topic please browse on the links below.

 sources: www.shvoong.com

Wednesday, March 3, 2010

Be Aware Of The Human Causes Of Global Warming

By Ajith Guptha

Global warming is a serious condition that affects our planet. It is important to be aware of the human causes of global warming in order to prevent additional global warming from occurring. While humans contribute a lot to global warming there are also natural ways in which global warming occurs. For these types of situations there is little that can be done to stop the global warming which may occur.

Humans on the other hand have the opportunity to curb a number of the activities which can contribute to an increase in global warming. By simply limiting these activities, or reinventing how they are done, the planet can remain a healthier place for everyone to live.

Different Ways Humans Can Cause Global Warming

Think about all of the products in the world that are made out of nylon. The process to make nylon involves nitrous oxide which is extremely harmful to the environment. When this substance is released into the atmosphere the rays from the sun kick start a reaction. This reaction contributes to a problem called the green house effect which ultimately results in the global warming of the planet and is a great example of a human cause of global warming.

Humans cause

global warming to occur just by simply being alive. Every breath we exhale contains carbon dioxide. This gas is one of the most harmful to our atmosphere and as the amount of carbon dioxide collects our planet begins to warm. This is not something that happens overnight but slowly over a large amount of time. There is little we can do prevent this from occurring either.

Consider all of the different ways in which we use coal. We burn coal to power factories and to provide heat. It is generally a cheap alternative compared with other fossil fuels that are used in similar ways. The unfortunate downfall of using coal is that it releases a great deal of toxins into our environment. In fact it is a leading cause of global warming by CO2. Today many industries are trying to overcome this pollution issue by creating cleaner ways to burn the coal. Until the process is further refined, coal will continue to contribute to global warming.

As more and more people populate the earth each year the number of greenhouse gases like carbon dioxide and methane that is released into the environment grows. As this happens the process of global warming is amplified. Simply being aware of the numerous things that can cause global warming is a great way to help people modify behaviors which harm the atmosphere.


source: http://www.healtharticles-lk.com

Monday, March 16, 2009

Climate Change in Indonesia



The devastating impact of global warming is already evident in Indonesia and will likely worsen due to further human-induced climate change, warns WWF.

The review from the global conservation organization, Climate Change in Indonesia – Implications for Humans and Nature, highlights that annual rainfall in the world’s fourth most populous nation is already down by 2 to 3 per cent, and the seasons are changing.

The combination of high population density and high levels of biodiversity, together with a staggering 80,000 kilometres of coastline and 17,500 islands, makes Indonesia one of the most vulnerable countries to the impacts of climate change.


Indonesian deforestation Cleaning forest fire for palm oil plantation (Slash & Burn) Central Kalimantan, Indonesia. Indonesia is a significant emitter of greenhouse gases due to deforestation and land-use change. (Credit: Copyright WWF-Canon / Alain Compost)


Shifting weather patterns have made it increasingly difficult for Indonesian farmers to decide when to plant their crops, and erratic droughts and rainfall has led to crop failures. A recent study by a local research institute said that Indonesia had lost 300,000 tonnes of crop production every year between 1992-2000, three times the annual loss in the previous decade.

Climate change in Indonesia means millions of fishermen are also facing harsher weather conditions, while dwindling fish stocks affect their income. Indonesia's 40 million poor, including farmers and fishermen, will be the worst affected due to threats including rising sea levels, prolonged droughts and tropical cyclones, the report said.

“As rainfall decreases during critical times of the year this translates into higher drought risk, consequently a decrease in crop yields, economic instability and drastically more undernourished people,” says Fitrian Ardiansyah, Director of WWF-Indonesia’s Climate and Energy Programme. “This will undo Indonesia’s progress against poverty and food insecurity.”

WWF’s review shows that increased rainfall during already wet times of the year may lead to high flood risk, such as the Jakarta flood of February this year that killed more than 65 people and displaced nearly half a million people, with economic losses of US$450 million.

Climate change impacts are noticeable throughout the Asia-Pacific region. More frequent and severe heat waves, floods, extreme weather events and prolonged droughts will continue to lead to increased injury, illness and death. Continued warming temperatures will also increase the number of malaria and dengue fever cases and lead to an increase in other infectious diseases as a result of poor nutrition due to food production disruption.

“The Indonesian government must take its role seriously and lead the way in the fight against global climate change,” says Mubariq Ahmed, Executive Director and CEO of WWF-Indonesia. “Indonesia has to take up the challenge of climate change, putting climate adaption into the development agenda, promoting sustainable land use, as well as demanding support from industrialized nations.”

Indonesia is already a significant emitter of greenhouse gases due to deforestation and land-use change, estimated at 2 million hectares per year and accounts for 85 per cent of the country’s annual greenhouse gas emissions. It is also a serious coal producer and user in the region.

“The government of Indonesia knows how important action against climate change is for their own country and people, and it has put a lot of work into steering the Bali negotiations,” says Hans Verolme, Director of WWF’s Global Climate Change Programme.

No one can escape from climate change in Indonesia. But the effects will be felt more acutely by the poorest people, who are living in the most marginal areas that are vulnerable to drought, for example, or to floods and landslide. Developed countries are responsible for the majority of greenhouse gas emissions which cause global warming, said United Nations Development Programme’s Country Director Hakan Bjorkman. "The poor walk the earth with very light carbon footprint," Bjorkman said, but "they are set to suffer the most from the actions of a few."

Material sourced from: World Wildlife Fund (2007, December 3). Indonesia At Risk: Climate Change Threatens People And Nature. ScienceDaily.

Reuters (2007, November 28) Indonesia Losing Crops, Fish Stocks to Global Warming, Planet Ark.
http://www.global-greenhouse-warming.com

Wednesday, February 25, 2009

Climate Change Glossary

Bahasa Indonesia (by Div Perubahan Iklim Men LH)
Source:http://climatechange.menlh.go.id

Aforestrasi
Konversi lahan bukan hutan menjadi lahan hutan melalui kegiatan penanaman (biasa disebut penghijauan) dengan menggunakan jenis tanaman (species) asli (native) atau dari luar (introduce). Menurut Marrakech Accord (2001) kegiatan penghijauan tersebut dilakukan pada kawasan yang 50 tahun sebelumnya bukan merupakan hutan.

Akumulasi
Terkumpulnya suatu zat tertentu menjadi satu kesatuan dalam kurun waktu tertentu.

Atmosfer
Lapisan udara yang menyelimuti planet bumi. Atmosfer terdiri dari nitrogen (79,1%), oksigen (20,9%), karbondioksida (60.03%) dan beberapa gas mulia (argon, helium, xenon, dan lain-lain), ditambah dengan uap air, ammonia, zat-zat organik, ozon, berbagai garam-garaman, dan partikel padat tersuspensi. Atmosfir bumi terdiri dari berbagai lapisan, yaitu berturut-turut dari bawah ke atas adalah troposfer, stratosfer, mesosfer, dan termosfer.


Bahan Bakar Fosil

Bahan bakar yang terbentuk dari fosil-fosil tumbuhan dan hewan di masa lampau. Contonya adalah minyak bumi, gas alam, dan batu bara. BBF tergolong bahan bakar yang tidak terbarukan.

Biogas
Gas yang dihasilkan dari proses fermentasi mikroorganisme, biasanya dihasilkan dari bahan baku sampah organisk ataupun dari sisa pencernaan (kotoran) mahluk hidup. Unsur utama biogas adalah gas metana.

Biomassa
Total berat kering (dry weigth) satu spesies atau semua spesies mahluk hidup dalam suatu daerah yang diukur pada waktu tertentu. Ada dua jenis biomassa, yaitu biomasa tanaman dan biomassa binatang.

BOE
Barrel Oil Equivalent, 6.000 cubic feet, faktor yang digunakan untuk mengkonversi volume dari hidrokarbon yang diproduksi

CH4
Gas Metana, salah satu dari 6 Gas Rumah Kaca (GRK) yang memiliki GWP sekitar 25 kali CO2. Gas ini banyak dihasilkan dari dekomposisi bahan organik secara naaerobik, misalnya sawah, penimbunan sampah organik dan kotoran mahluk hidup.

CO2
Karbondioksida, salah satu dari GRK yang utama dan dijadikan referensi GRK yang lain dalam menentukan Indek GWP-nya =1. GRK ini banyak dihasilkan dari pembakaran BBF, biomassa dan alih guna lahan.

COP
Conference of Parties, konferensi para pihak (negara-negara) penandatangan konvensi PBB, dalam hal ini konvensi perubahan iklim (UNFCCC).


COP/MOP
Conference of Parties Serving as Meeting of Parties, Konvensi para pihak konvensi Perubahan Iklim yang merupakan pertemuan para pihak Protokol.


Deforestasi
Penebangan hutan atau konvensi lahan hutan menjadi lahan tidak berhutan secara permanen

El Nino/ENSO (El Nino-Southern Oscillation)
Peristiwa meningkatnya suhu muka air laut disebelah timur hingga tengah Samudra Pasifik. Peristiwa ini terjadi pada akhir tahun setiap 2-13 tahun sekali dan berlangsung selama 12-18 bulan.

Emisi
Zat yang dilepaskan ke atmosfer yang bersifat sebagai pencemar udara


ET
Emission Trading, mekanisme perdagangan emisi antar negara maju untuk menghasilkan AAU (Assigned Amount Unit), satuan penurunan emisi GRK.

GRK
Gas Rumah Kaca, Adalah gas-gas di atmosfer yang dihasilkan dari berbagai kegiatan manusia. Gas ini berkemampuan untuk menyerap radiasi matahari di atmosfer sehingga menyebabkan suhu di permukaan bumi menjadi lebih hangat.

GWP
Global Warming Potential, index potensi pemanasan global, yaitu index yang menggunakan CO2 sebagai tolok ukur.

Gigaton
109 ton, unit yang sering digunakan untuk menyatakan jumlah karbon atau karbondioksida di atmosfer.

Gletser
Lapisan es yang besar yang bergerak di lereng gunung atau daratan karena adanya gaya gravitasi. Gletser biasanya bergerak sangat lambat, dari 10-1000m per tahun.

HFCS
Hidrofluorokarbon, salah satu dari enam GRK yang diperhitungkan dalam pasal 3 Protokol Kyoto.

HPH
Hak Pengusahaan Hutan, Izin yang dikeluarkan untuk kegiatan pengelolaan hutan dengan sistem Tebang Pili Tanaman Indonesia (TPTI) di kawasan hutan-hutan alam produksi selama periode tertentu, umumnya 20 tahun, dan dapat diperbaruhi lagi untuk satu periode selanjutnya, yaitu selama 20 tahun lagi.

HTI
Hutan Tanaman Industri adalah program penanaman lahan hutan tidak produktif dengan tanaman-tanamanan industri seperti kayu jati dan mahoni guna memasok kebutuhan serat kayu (dan kayu pertukangan) untuk pihak industri.


IPCC

Interngovernmental Panel on Climate Change adalah suatu panel ilmiah yang terdiri dari para ilmuwan dari seluruh dunia. Panel ini bertugas untuk mengkaji atau meneliti senua aspek dari masalah perubahan iklim.

INC
Interngovernmental Negotiating Commitee, panitia yang dibentuk PBB untuk melakukan negosiasi dalam rangka mempersiapkan penyusunan Kerangka Kerja Konvensi Perubahan Iklim PBB atu UNFCCC.

JI
Joint Implementation adlah sebuah mekanisme penurunan emisi GRK yang dapat dilakukan oleh antar negara maju untuk menghasilkan ERU (Emission Reduction Unit), suatu penurunan emisi GRK.

Keanekaragaman Hayati (Biological Diversity atau Biodiversity)
Keanekaragaman mahluk hidup dan hal-hal yang berhubungan dengan ekologinya, dimana mahluk hidup tersebut terdapat. Keanekaragaman Hayati mencakup keaneragaman genetik, species dan ekosistem.

LULUCF
Land-use, Land-use Change and Forestry adalah kegiatan yang berkaitan dengan penggunaan dan perubahan tata guna lahan serta kehutanan yang berpengaruh langsung terhadap emisi GRK karena adanya pelepasan dan penyerapan karbon, seperti dalam hal penebangan dan kebakaran hutan

Reforestasi
Umumnya berarti penanaman kembali pada lahan hutan yang rusak. Menurut Marrakech Accord (2001), kegiatan penanaman kembali ini dilakukan pada hutan yang telah rusak sdebelum 31 Desember 1989.

Salinitas
Kemasinan atau kadar garam yang terdapat dalam sebuah larutan.

Simpanan Karbon
Banyaknya kandungan karbon yang ada di pohon pada suatu areal hutan. Asumsinya pohon menyerap dan menyimpan CO2

TSCF
Terra Standart Cubic Feet = 1012 SCF (Standart Cubic Foot)

Vegetasi
Tumbuh-tumbuhan pada suatu area yang terkait sebagai suatu komunitas tetapi tidak secara taksonomi. Atau jumlah tumbuhan yang meliputi wilayah tertentu atau di atas bumi secara menyeluruh.

UNFCCC

United Nation Framework Convention on Climate Change adalah Konvensi PBB tentang perbahan iklim yang bertujuan untuk menstabilkan konsentrasi GRK sehingga tidak membahayakan sistem iklim bumi. Konvensi ini sudah diratifikasi oleh Indonesia melalui UU No.6/1994


UNEP

United Nation Environment Programme adalah sebuah badan PBB yang berwenang untuk meningkatkan kepedulian masyarakat dan negara anggota PBB akan masalah-masalah lingkungan.

WMO
World Meteorogical Organization adalah suatu badan organisasi dunia yang bergerak di bidang meteorologi

Thursday, November 13, 2008

New nano coating boosts solar efficiency


By Matthew Knight For CNN

LONDON, England (CNN) -- Researchers have developed a new anti-reflective coating that boosts the efficiency of solar panels and allows sunlight to be absorbed from almost any angle.
Rensselaer Polytechnic Institute researchers say they've made advances in absorption of sunlight.


Rensselaer Polytechnic Institute researchers say they've made advances in absorption of sunlight.

Scientists from the Future Chips Constellation (FCC) at the Rensselaer Polytechnic Institute in New York have created the coating using nanotechnology -- engineering devices on a molecular scale.

They are hopeful that it can transform the solar energy market in the coming years.

A typical untreated silicon solar cell absorbs just over two thirds of the sunlight it receives. But with the FCC's nanoengineered coating, that figure rises to 96.21 percent.

In their paper: "Realization of a near perfect antireflection coating for silicon solar energy utilization," published in the scientific journal Optics Letters, researchers report that gains in absorption were consistent across the entire spectrum of sunlight -- ultraviolet, visible light, and infrared.

"To get maximum efficiency when converting solar power into electricity, you want a solar panel that can absorb nearly every single photon of light, regardless of the sun's position in the sky," said Rensselaer physics professor Shawn-Yu Lin, and head of the FCC research team. "Our new anti-reflective coating makes this possible."
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Comprising of seven tiny layers, each 50 to 100 nanometers in height, the coating is made of silicon dioxide and titanium dioxide nanorods positioned at an oblique angle.

The FCC team found that stacking the coatings one on top of another enhanced the anti-reflective properties of each layer. Having a series of layers also helps to "bend" the flow of sunlight which assists in capturing light that would otherwise be reflected off.

Lin, an expert in nanostructure photonics and a pioneer in the field of photonic crystals, says that the new coating could be applied to just about any photovoltaic material.

Conventional solar technology has thus far dictated that solar panels be mounted on south-facing roofs, or in locations where the sun source is unrestricted and strong. But this new coating could change all this.

It would also mean that large scale solar farms, like the giant array in Alentejo, Portugal, could increase their output while saving on energy used to track the sun.

"The anti-reflective coating requires multi-layer coatings which are slightly more complex than the typical single-layer ones," Lin told CNN. "However, the thickness of each individual layer does not need to be precise. This makes manufacturing easier."

Lin is currently exploring partnerships and licensing arrangements, and estimates the product could be on the market as soon as the next two to three years.

"The economics of modern day solar cells depends largely on the thickness of the substrate (500 - 1000 micrometers) and the processing cost for making the junctions. Our coating has a thickness of 0.7 to 1 micrometer. The additional cost for incorporating our antireflective coating should not exceed two to four percent of that for existing solar cells," Lin said.

The only downside that Lin and his team have found so far is that the nanorods can be fragile. Future research will focus on protecting them better and investigating the use of a thin porous film to make them more robust.

In response to the paper's publication, Professor Darren Bagnall from the Nanoscale Systems Integration Group at the UK's University of Southampton told CNN, "It's a really impressive surface, and to get down to reflectivity from all angles of 3.5 percent is pretty impressive. But it's really only going to deliver maybe four or five percent more power from the solar cell."

Bagnall is himself trying to nanoengineer surfaces for solar cells by mimicking the surface of moth eyes, which possess excellent antireflective surfaces.

He says that the FCC paper is only talking about the amount of light that's transmitted to the device, not the efficiency of the device itself. "Reflection is a relatively small part of the problem," he said.

Jeremy Leggett, founder of Solar Century, a leading UK solar-energy company, also gave a cautious welcome to the new research.

"I've seen this before from other university research groups and there is a world of difference between nice results in the lab and commercially viable products," Leggett said. "But at some point one of them is going to work."

Leggett believes that the future is already very bright for the solar industry. He says that $150 billion was invested in renewable energy last year, with $28 billion of that going to photovoltaics.

"With the current efficiencies, we are one of the fastest growing markets in the world. Solar is the fastest growing clean technology with existing technology. Any other increases in efficiency are going to be the icing on a very nice cake."

source: www.CNN.com

Tuesday, October 28, 2008

The impact of global warming in Asia

The Asian region spans polar, temperate, and tropical climates and is home to over 3 billion people. As the climate warms, many mountain glaciers may disappear, permafrost will thaw, and the northern forests are likely to shift further north. Rapid population growth and development in countries like China and India will put additional pressures on natural ecosystems and will lead to a rapid rise in the release of greenhouse gases into the atmosphere unless steps are taken to curtail emissions.

Fingerprints

1. Llasa, Tibet -- Warmest June on record, 1998. Temperatures hovered above 77�F for 23 days.

59. Garhwal Himalayas, India -- Glacial retreat at record pace. The Dokriani Barnak Glacier retreated 66 ft (20.1 m) in 1998 despite a severe winter. The Gangorti Glacier is retreating 98 ft (30 m) per year. At this rate scientists predict the loss of all central and eastern Himalayan glaciers by 2035.

62. Tien Shan Mountains, China -- Glacial ice reduced by one quarter in the past 40 years.

90. Southern India - Heat wave, May 2002. In the state of Andhra Pradesh temperatures rose to 120�F, resulting in the highest one-week death toll on record. This heat wave came in the context of a long-term warming trend in Asia in general. India, including southern India, has experienced a warming trend at a rate of 1�F (0.6�C) per century.

91. Nepal - High rate of temperature rise. Since the mid-1970s the average air temperature measured at 49 stations has risen by 1.8�F (1�C), with high elevation sites warming the most. This is twice as fast as the 1�F (0.6�C) average warming for the mid-latitudinal Northern Hemisphere (24 to 40�N) over the same time period, and illustrates the high sensitivity of mountain regions to climate change.

93. Taiwan - Average temperature increase. The average temperature for the island has risen 1.8-2.5�F (1-1.4�C) in the last 100 years. The average temperature for 2000 was the warmest on record.

94. Afghanistan - 2001 - Warmest winter on record. Arid Central Asia, which includes Afghanistan, experienced a warming of 0.8-3.6�F (1-2�C) during the 20th century.

95. Tibet - Warmest decade in 1,000 years. Ice core records from the Dasuopu Glacier indicate that the last decade and last 50 years have been the warmest in 1,000 years. Meteorological records for the Tibetan Plateau show that annual temperatures increased 0.4�F (0.16�C) per decade and winter temperatures increased 0.6�F (0.32�C) per decade from 1955 to 1996.

96. Mongolia - Warmest century of the past millennium. A 1,738-year tree-ring record from remote alpine forests in the Tarvagatay Mountains indicates that 20th century temperatures in this region are the warmest of the last millennium. Tree growth during 1980-1999 was the highest of any 20-year period on record, and 8 of the 10 highest growth years occurred since 1950. The 20th century warming has been observed in tree-ring reconstructions of temperature from widespread regions of Eurasia, including sites in the Polar Urals, Yakutia, and the Taymir Peninsula, Russia. The average annual temperature in Mongolia has increased by about 1.3�F (0.7�C) over the past 50 years.

119. Chokoria Sundarbans, Bangladesh - Flooded mangroves. Rising ocean levels have flooded about 18,500 acres (7,500 hectares) of mangrove forest during the past three decades. Global sea-level rise is aggravated by substantial deltaic subsidence in the area with rates as high as 5.5 mm/year.

120. China - Rising waters and temperature. The average rate of sea-level rise was 0.09 +/- 0.04 inches (2.3 +/- 0.9 mm) per year over the last 30 years. Global sea-level rise was aggravated locally by subsidence of up to 2 inches (5 cm) per year for some regions due to earthquakes and groundwater withdrawal. Also, ocean temperatures off the China coast have risen in the last 100 years, especially since the 1960s.

126. Bhutan - Melting glaciers swelling lakes. As Himalayan glaciers melt glacial lakes are swelling and in danger of catastrophic flooding. Average glacial retreat in Bhutan is 100-130 feet (30-40 m) per year. Temperatures in the high Himalayas have risen 1.8�F (1�C) since the mid 1970s.

127. India - Himalayan glaciers retreating. Glaciers in the Himalayas are retreating at an average rate of 50 feet (15 m) per year, consistent with the rapid warming recorded at Himalayan climate stations since the 1970s. Winter stream flow for the Baspa glacier basin has increased 75% since 1966 and local winter temperatures have warmed, suggesting increased glacier melting in winter.

130. Mt. Everest - Retreating glacier.The Khumbu Glacier, popular climbing route to the summit of Mt. Everest, has retreated over 3 miles (5 km) since 1953. The Himalayan region overall has warmed by about 1.8�F (1�C) since the 1970s.

131. Kyrgyzstan - Disappearing glaciers. During 1959-1988, 1,081 glaciers in the Pamir-Altai disappeared. Temperatures in the mountains of Kyrgyztan have increased by 0.9-2.7� F (0.5-1.5�C) since the 1950s.

142. Siberia - Melting permafrost. Large expanses of tundra permafrost are melting. In some regions the rate of thawing of the upper ground is nearly 8 inches (20 cm) per year. Thawing permafrost has already damaged 300 buildings in the cities of Norilsk and Yakutsk. In Yakutsk, the average temperature of the permanently frozen ground has warmed by 2.7 �F (1.5�C) during the past 30 years.

Harbingers

18. Indonesia -- Malaria spreads to high elevations. Malaria was detected for the first time as high as 6,900 feet (2103 m) in the highlands of Irian Jaya in 1997.

50. Philippines -- Coral reef bleaching.

51. Indian Ocean -- Coral reef bleaching (inclues Seychelles; Kenya; Reunion; Mauritius; Somalia; Madagascar; Maldives; Indonesia; Sri Lanka; Gulf of Thailand [Siam]; Andaman Islands; Malaysia; Oman; India; and Cambodia).

52. Persian Gulf -- Coral reef bleaching.

77. Korea -- Heavy rains and flooding. Severe flooding struck during July and August, 1998, with daily rainfall totals exceeding 10 inches (25.4 cm).

87. Indonesia -- Burning rainforest, 1998. Fires burned up to 2 million acres (809,371 hectares) of land, including almost 250,000 acres (101,172 hectares) of primary forest and parts of the already severely reduced habitat of the Kalimantan orangutan.

88. Khabarovsk, Russia -- Wildfires threaten tiger habitat, 1998. Drought and high winds fueled fires that destroyed 3.7 million acres (1,497,337 hectares) of taiga and threatened two important nature reserves that are habitat for the only remaining Amur tigers.

103. Bangladesh - Link between stronger El Ni�o events and cholera prevalence. Researchers found a robust relationship between progressively stronger El Ni�o events and cholera prevalence, spanning a 70-year period from 1893-1940 and 1980-2001. There has been a marked intensification of the El Ni�o/Southern Oscillation phenomenon since the 1980s, which is not fully explained by the known shifts in the Pacific basin temperature regime that began in the mid-1970s. Findings by Rodo et al. are consistent with model projections of El Ni�o intensification under global warming conditions. The authors make a strong case for the climate-health link by providing evidence for biological sensitivity to climate, meteorological evidence of climate change, and evidence of epidemiological change with global warming. The study likely represents the first piece of evidence that warming trends over the last century are affecting human disease.

105. Lake Baikal, Russia - Shorter freezing period. Winter freezing is about 11 days later and spring ice breakup is about 5 days earlier compared to a century ago. Some regions of Siberia have warmed by as much as 2.5�F (1.4�C) in just 25 years.

147. Iran - Desiccated wetlands, 2001 Ninety percent of wetlands have dried up after 2 years of extreme drought. Much of South West Asia has experienced a prolonged three-year drought that is unusual in its magnitude. Out of 102 years of record, 1999, 2000, and 2001 rank as the fifth, third, and seventh driest on record. 1999-2000 was the driest winter on record.

148. Pakistan - Longest drought on record, 1999-2001. The prolonged three-year drought, which covers much of South West Asia, has affected 2.2 million people and 16 million livestock in Pakistan.

149. Tajikistan - Lowest rainfall in 75 years, 2001. 2001 marked the third consecutive year of drought, which has destroyed half the wheat crop.

150. Korea - Worst drought in 100 years of record, 2001. It coincided with an average annual temperature increase in Asia�s temperate region, which includes Korea, by more than 1.8�F (1�C) over the past century. The warming has been most pronounced since 1970.

155. China - Disappearing Lakes, 2001. More than half of the 4,000 lakes in the Qinghai province are disappearing due to drought. The severity of the impact is exacerbated by overpumping of aquifers. Annual average temperature in China has increased during the past century, with pronounced warming since 1980. Most of the warming has been in northern areas, including Qinghai Province, and in the winter.

source:http://www.climatehotmap.org

Saturday, April 26, 2008

Levels of Carbon Dioxide in Atmosphere Increase

by: Cornelia Dean

tmospheric levels of carbon dioxide, the principal heat-trapping gas, are continuing to rise at an accelerating rate, the National Oceanic and Atmospheric Administration reported. And after a decade of stability, levels of an even more potent heat-trapper, methane, rose as well. The agency said atmospheric levels of carbon dioxide reached nearly 385 parts per million last year, up from 280 in 1850 and an increase of 2.6 parts per million from 2006, chiefly from the burning of fossil fuels. The methane situation is less clear. Methane is produced naturally by swamps but also by activities including burning fossil fuels. The issue is important because climate experts have long worried that if Arctic permafrost thaws, the process would release potentially catastrophic amounts of methane into the atmosphere. In a statement, the agency said the most likely causes of the methane increase were economic development in Asia and emissions from Arctic wetlands. It said it was "too soon to tell" if the increase signals an Arctic thaw

source: www.stopglobalwarming.org

Wednesday, April 2, 2008

The Imapatct of Global Warming to Coastal and Marine Environments



















We know the earth in the last decade have old. This can indicate that there is iclim change Globaly and than many disaster in the wolrd. so we must save our the earth before late. The global warming that the world is beginning to experience will likely have a major impact on coastal and marine environments.
  • The sea has an enormous capacity to store heat. Warmer water, combined with anticipated changes in ocean currents, could have a devastating impact on marine ecosystems and biodiversity.
  • One potential result could be a reduction in the upwelling of nutrients, which would in turn reduce productivity in key fishing areas.
  • Decreased growth may also be seen in coral reefs, with high concentrations of CO2 in the water impairing the deposition of limestone required for coral skeletons (UNEP, 2002).

A significant sea level rise is one of the major anticipated consequences of climate change. This will cause some low-lying coastal areas to become completely submerged, while others will increasingly face short-lived high-water levels. These anticipated changes could have a major impact on the lives of coastal populations. The small island developing states (SIDS) will be especially vulnerable to the effects of sea level rise, and to changes in marine ecosystems, because of their major dependence on marine resources (UNEP, 2002).

The extent of future sea level rise will depend on a multitude of factors, and is therefore extremely difficult to predict. While rising sea levels will be exacerbated by thermal expansion of the warming oceans, and the melting of land ice, they will be partially offset by increased precipitation over Antarctica (Met Office UK, 2001).


Source: http://www.unep.org/

Tuesday, October 30, 2007

Global Waming - A Threat To Humanity And Environment

Scientists have already warned the world of the possible results of global warming some thirty years ago. After present day wars it is the biggest threat to our way of life. Due to the change of climate which is the result of global warming, droughts affect crops and livestock production, sea level are rising, glaciers are melting, floods and landslides aggravate, destructive storms prevail.
These are some of the catastrophes brought about which require speedy solutions and a strong resolve to cope with the situation. But have we done anything to rectify the problem? Do we allow it to carry on without fighting it? Now it has grown to such huge proportion that a worldwide effort of every country and government is required to promote awareness among the population on how to alleviate the situation. Governments should not only foster action among individual citizens and corporations, but also among other countries worldwide.This cooperation of government with its citizens and companies and with other countries should aim to grow research and experimentation on the long term effect of climate change.
How will it affect our rain forests and the world's major bodies of water like the oceans, lakes, rivers, and the livelihood of people who are depending on them. Addressing all such environmental issues is desperately needed to tackle the effect of global warming. We need to start reducing carbon emission and emission of other greenhouse gases, teach people about climate change issues and what practical solutions can be done.Each country has to map out of how much carbon dioxide and greenhouse gases it produces and emits into the atmosphere and in the same way it has to decide how much greening of the environment through reforestation in the rural areas and planting of plants and trees in urban areas is needed to neutralize these harmful gases emitted into the air. Once these gases are in the atmosphere, they stay there for a long time thus trapping the heat in the lower atmosphere and radiating some of it back to earth. With huge amount of carbon dioxide and greenhouse gases in the atmosphere it would increase the global surface temperature, thus higher sea levels, melting the north and south pole glaciersordercausing drought, and disrupting not only the natural balance of world's climate but the ecological balance of the environment as well.Through environmental awareness, every individual can help in his own little way to combat global warming.
Every little thing you can do at home in the use of gas emitting equipment or vehicles will help. You need to minimize their use if you cannot totally avoid them. Any equipment or vehicle using oil and gas produces carbon dioxide. Greenhouse gas is emitted by compressor-run equipment like airconditioning units, refrigeration and freezing units, etc. which need to be reduced because of the effect it can bring to our ozone layer.These gases are the most devastating global warming gases which remain in the atmosphere for a long time. Energy efficient appliances should be encouraged and by saving energy help reduce gas emission of power plant generators generating electricity. So it is better to discard inefficient equipments and switch off the appliances, lights and compressor-run equipment when not in use. If you are going somewhere not far from your home try walking, it is not only a good exercise but you also help save the environment from deteriorating.(This article is adapted from an article written byh Arnold Cafe who is an active online marketer and the author of Ideas Galore.)

Article Source: http://www.bestglobalwarmingarticles.com
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