Ini ada laporan pemanasan global.

Summary for Policymakers was formally approved at the 10th Session of Working Group I of the IPCC, Paris, February 2007 (Format PDF 21 hal.) :

http://news.bbc.co.uk/1/shared/bsp/hi/pdfs/02_02_07_climatereport.pdf

Press Release PBB
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FRAMEWORK CONVENTION ON CLIMATE CHANGE - Secretariat
CONVENTION - CADRE SUR LES CHANGEMENTS CLIMATIQUES - Secrétariat

PRESS RELEASE
UNFCCC Executive Secretary calls for speedy and decisive international action on climate change

(Paris, 2 February 2007) – Against the background of the most conclusive scientific evidence to date that the warming of the climate system is unequivocal and accelerating, the Executive Secretary of the United Nations Framework Convention on Climate Change, Yvo de Boer, today called for speedy and decisive international action to combat the phenomenon.
According to a report released by the UN’s Intergovernmental Panel on Climate Change (IPCC) Friday, the world faces an average temperature rise of around 3°C this century, if greenhouse gas emissions continue to rise at their current pace and are allowed to double from their pre-industrial level.
“The findings, which governments have agreed upon, leave no doubt as to the dangers mankind is facing and must be acted upon without delay. Any notion that we do not know enough to move decisively against climate change has been clearly dispelled,” Mr. de Boer said.
The new report says that warming during the last 100 years was 0.74 °C, with most of the warming occurring during the past 50 years. The warming per decade for the next 20 years is projected to be 0.2 °C per decade.
“It is politically significant that all the governments have agreed to the conclusions of the scientists, making this assessment a solid foundation for sound decision making,” Mr. de Boer said.
The United Nations’ top climate change official called on governments to provide the necessary leadership and to move negotiations under the auspices of the UN forward.
“The world urgently needs new international agreement on stronger emission caps for industrialized countries, incentives for developing countries to limit their emissions, and support for robust adaptation measures,” he said.
According to the Stern review issued last year by the UK government, an average temperature rise of 3°C would translate into severe water shortages and lower crop yields around the world, with climate change already causing setbacks to economic and social progress in developing countries.
Mailing Address: CLIMATE CHANGE SECRETARIAT (UNFCCC), P.O. Box 260 124, D-53153 Bonn, Germany
Office Location: Haus Carstanjen, Martin-Luther-King-Strasse 8, D-53175 Bonn, Germany
Media Information Office: (49-228) 815-1005 Fax: (49-228) 815-1999
Email: press@unfccc.int Web: http://unfccc.int
An assessment by the IPCC of the impacts of climate change will be released in early April.

The UNFCCC Executive Secretary called for a step change in negotiations and warned against resignation in the face of the problem.
“The good news is that the worst predictions of the IPCC are based on scenarios which do not take into account action to combat climate change now or in the future. Both the policies and technologies to prevent such consequences are available and putting them in place is precisely what the Climate Convention and the Kyoto Protocol are designed to do.”
Mr. de Boer called on countries to overcome their inhibitions to acting against climate change on economic grounds.
“The Stern Review not only points to effects of unabated climate change such as premature deaths due to rising temperatures. It clearly shows us that the economic costs of inaction – for example, permanent displacement of millions of people – will be much higher than the cost of action,” he said.
The IPCC will complete its assessments of the impacts of climate change and of available preventive measures within the next four months and inform of the findings at the next UNFCCC talks and negotiations scheduled for May 2007 in Bonn.
A synthesis of all three reports will be presented approximately one month before this year's United Nations Climate Change Conference in December.
The UNFCCC Executive Secretary said he believed it was possible to build on the success of the Kyoto Protocol in using market-based approaches to reduce the cost of action on climate change.
The Kyoto Protocol presently requires 35 industrialized countries and the European Community to reduce greenhouse gas emissions by an average of 5% below 1990 levels in its first commitment period between 2008 and 2012.
“Any future agreement, which will require global participation, should recognize that industrialized countries need to continue to take the lead in reducing emissions and be prepared to undertake emission reductions on the order of 60 to 80% by 2050,” said Mr. de Boer.
“This is the target that must be achieved in order to stabilize concentrations of greenhouse gases in the atmosphere at a level which prevents the worst consequences,” he added.
Note to journalists:
To arrange interviews, please contact
Ms. Carrie Assheuer, Public Information and Media Assistant: (+49-228) 815-1005
For further information, please contact:
Mr. John Hay, Spokesperson: (+49-172) 258-6944
See also http://unfccc.int.

Wah pas banget di sekolah gw lagi belajar pemanasan global.

Karena gw islam, dan gw berpanduan Al-Quran. gw pernah baca suatu ayat, yang ngejelasin kalo memang Tuhan udah memperingati kita, kalo kiamat emang dikarenakan kita, dan kesalahan kita.
Hehehe. Kutub juga udah makin tipis yah O3[Ozon] nya. gw jg makin takut saama pemanasan global .. huhuhu ;p

Wah pas banget di sekolah gw lagi belajar pemanasan global.

Karena gw islam, dan gw berpanduan Al-Quran. gw pernah baca suatu ayat, yang ngejelasin kalo memang Tuhan udah memperingati kita, kalo kiamat emang dikarenakan kita, dan kesalahan kita.
Hehehe. Kutub juga udah makin tipis yah O3[Ozon] nya. gw jg makin takut saama pemanasan global .. huhuhu ;p

Dari yang saya baca di blognya omnologos, dia bilang sebagai ilmuwan harusnya bersikap skeptis apalagi tentang masa depan yang belum pasti. Dia gak yakin pemanasan global itu akibat ulah manusia. Dia merasa terganggu teknologi harus dibatasi hanya karena alasan "mungkin" ini yang menyebabkan pemanasan global. Dia bilang ribuan tahun tidak terjadi apa2, kenapa sekarang semuanya harus dihentikan. Kira2 begitu intinya. Saya ninggalin komen agak pedas padahal kemaren di sana, tapi dihapus kayaknya hehe...

Dari data-data yang diperoleh dan sejumlah riset yang dilakukan, bukannya ilmu pengetahuan memang seharusnya bisa memberikan prediksi akan apa yang bisa terjadi di masa depan? Dari termodinamika juga kita belajar kalo entropi selalu bernilai positif. Bahwa peristiwa spontan yang terjadi selalu menuju chaos, kalo mau arah sebaliknya maka dibutuhkan usaha.

http://physicsweb.org/articles/world/20/2/3/1

It is official: the Earth is getting hotter, and it is down to us. This month scientists from over 60 nations on the Intergovernmental Panel on Climate Change (IPCC) released the first part of their latest report on global warming. In the report the panel concludes that it is very likely that most of the 0.5 °C increase in global temperature over the last 50 years is due to man-made emissions of greenhouse gases. And the science suggests that much greater changes are in store: by 2100 anthropogenic global warming could be comparable to the warming of about 6 °C since the last ice age.

............The climate system consists of five elements: the atmosphere; the ocean; the biosphere; the cryosphere (ice and snow) and the geosphere (rock and soil). These components interact on many different scales in both space and time, causing the climate to have a large natural variability; and human influences such as greenhouse-gas emissions add further complexity. Predicting the climate at a certain time in the future thus depends on our ability to include as many of the key processes as possible in our climate models.

...........Having made our models and tested them against current and past climate data, what do they tell us about how the climate might change in years to come? First, we need to input a scenario of future emissions of greenhouse gases. Many different scenarios are used, based on estimates of economic and social factors, and this is one of the major sources of uncertainty in climate prediction. But even if greenhouse-gas emissions are substantially reduced, the long atmospheric lifetime of CO2 means that we cannot avoid further climate change due to CO2 already in the atmosphere.

Predictions vary between the different climate models developed worldwide, and due to the precise details of parametrizations within those models. Cloud parametrizations in particular contribute to the uncertainty because clouds can both cool the atmosphere through reflection or warm it by reduced radiative emissions. Such uncertainties led to a best estimate given in the third IPCC report in 2001 of global warming in the range 1.4–5.8 °C by 2100 compared with 1990.
.............At a Glance: Climate modelling

    * The scientific consensus is that the observed warming of the Earth during the past half-century is mostly due to human emissions of greenhouse gases
    * Predicting climate change depends on sophisticated computer models developed over the past 50 years
    * Climate models are based on the Navier–Stokes equations for fluid flow, which are solved numerically on a grid covering the globe
    * These models have been very successful in simulating the past climate, giving researchers confidence in their predictions
    * The most likely value for the global temperature increase by 2100 is in the range 1.4–5.8 °C, which could have catastrophic consequences

http://www.guardian.co.uk/international/story/0,,2004230,00.html

Scientists and economists have been offered $10,000 each by a lobby group funded by one of the world's largest oil companies to undermine a major climate change report due to be published today.

 

Masih untung bisa/pernah ice skating. saya malah cuman liat di tipi aja ada salju  :'( sama di pohon natal deng, kapas 

Ada riset lagi tentang pemanasan global.

nsf.gov/news/news_summ.jsp?cntn_id=108407&org=NSF&from=news

New Information Links Atlantic Ocean Warming to Stronger Hurricanes

Atmospheric scientists have uncovered fresh evidence to support the theory that global warming has contributed to the emergence of stronger hurricanes in the Atlantic Ocean. But the trend doesn't hold up in the world's other oceans.

"Documenting trends in hurricane intensity is made more difficult by sparse observations and has led to debates about whether the trends are real, or are artifacts of observations," says Jay Fein, program director in NSF's division of atmospheric sciences. "This study has directly addressed this point by using, for the first time, a new satellite data set to look at hurricane trends."

For decades, hurricane researchers found it difficult to work with the inconsistent nature of hurricane data. Before the advent of weather satellites, scientists were forced to rely on scattered ship reports and sailor logs to stay abreast of storm conditions. The advent of weather satellites during the 1960s dramatically improved the situation, but the technology has changed so rapidly that newer satellite records are barely consistent with older ones.

"This new data set is unlike anything that's been done before," says Kossin. "It's going to serve a purpose as being the only globally consistent data set around. The caveat of course, is that it only goes back to 1983."

After NCDC researchers recalibrated the hurricane figures, Kossin took a fresh look at how the new numbers on hurricane strength correlate with warming ocean temperatures, a side effect of global warming. What he found both supported and contradicted previous findings. "The data say that the Atlantic has been trending upwards in hurricane intensity quite a bit," says Kossin. "But the trends appear to be inflated or spurious everywhere else, meaning that we still can't make any global statements."

Sea-surface temperatures may be one reason why the Atlantic Ocean is unique, says Kossin. "The average conditions in the Atlantic at any given time are just on the cusp of what it takes for a hurricane to form," says Kossin. "So it might be that only a small change in conditions creates a much better chance of having a hurricane."

The Atlantic is also unique in that the physical variables that converge to form hurricanes--including wind speeds, wind directions and temperatures--mysteriously feed off each other to make conditions ripe for a storm. But scientists don't understand why, Kossin adds.

"While we can see a correlation between global warming and hurricane strength, we still need to understand exactly why the Atlantic is reacting to warmer temperatures in this way, and that is much more difficult to do," says Kossin. "We need to be creating models and simulations to understand what is really happening here."

nsf.gov/news/news_summ.jsp?cntn_id=108406&org=NSF&from=news

Northwest Atlantic Ocean Ecosystems Experiencing Large Climate-Related Changes

Ecosystems along the continental shelf waters of the Northwest Atlantic Ocean--from the Labrador Sea south of Greenland all the way to North Carolina--are experiencing large, rapid changes, report oceanographers funded by the National Science Foundation (NSF) in the Feb. 23, 2007, issue of the journal Science.

While some scientists have pointed to the decline of cod from overfishing as the main reason for the shifting ecosystems, the paper emphasizes that climate change is also playing a big role.

"It is becoming increasingly clear that Northwest Atlantic ecosystems are being affected by climate forcing from the bottom up and overfishing from the top down," said Charles Greene, an oceanographer at Cornell University in Ithaca, N.Y, and lead author of the Science paper. "Predicting the fate of these ecosystems will be one of oceanography's grand challenges for the 21st century."

Most scientists believe humans are warming the planet by burning fossil fuels and changing land surfaces. Early signs of this warming have appeared in the Arctic. Since the late 1980s, scientists have noticed that pulses of fresh water from increased precipitation and melting of ice on land and sea in the Arctic have flowed into the North Atlantic Ocean and made the water less salty.