Showing posts with label global warming. Show all posts
Showing posts with label global warming. Show all posts

Tuesday, April 13, 2010

Rivers Heating Up With Warming

Image: Rivers that flow near U.S. cities, as the Delaware River, shown here, are warming at the fastest rate. Getty Images

From Discovery News:


Twenty major U.S. streams and rivers have warmed significantly over the last few decades, according to new research.

Along with warmer air and warmer oceans, rivers also seem to be heating up with global warming. Across the United States, a new study found, water temperatures in some rivers have risen by more than 3 degrees Celsius in the last few decades.

Read more ....

Thursday, March 25, 2010

Global Warming Making People More Aggressive?

A railroad worker in Australia takes a break from the heat. Photograph by William Albert Allard, National Geographic Stock

From National Geographic:

Global warming could make the world a more violent place, because higher temperatures increase human aggression and create volatile situations, a new study says.

The report combined government data about average yearly temperatures with statistics on the number of violent crimes committed between 1950 and 2008.

Read more ....

Tuesday, March 23, 2010

Arctic Winds And Not Global Warming 'Responsible For Much Of Record Loss Of Sea Ice'

Study: Strong winds and not global warming are to blame for much of the record-breaking loss of ice in the Arctic Ocean in recent years.

From The Daily Mail:

Strong winds and not global warming are to blame for much of the record-breaking loss of ice in the Arctic Ocean in recent years, new research reveals.

Ice blown out of the Arctic area by winds can explain the one-third drop of sea ice since 1979, scientists believe.

The study helps to explain the huge loss of ice in the region during the summers of 2007 and 2008, after which some commentators suggested the Arctic Ocean would be ice-free during the summertime within a decade.

Read more ....

Saturday, March 6, 2010

Methane Escaping From Arctic Faster Than Expected And Could Stoke Global Warming, Warn Scientists

Photo: Researcher Katey Walter lights a pocket of methane on a lake in Siberia showing just how explosive the greenhouse gas is

From The Daily Mail:

The potent greenhouse gas methane, is bubbling out of the frozen Arctic much faster than expected and could stoke global warming.

Methane had become trapped in the permafrost over time and now 8million tonnes of it is seeping out due to rising temperatures, researchers said today.

'Subsea permafrost is losing its ability to be an impermeable cap,' Natalia Shakhova, a scientist at the University of Fairbanks, Alaska, said in a statement.

She co-led the study published in today's edition of the journal Science.

Read more ....

Friday, March 5, 2010

Globe-Warning Methane Is Gushing From A Russian Ice Shelf

From Discover Magazine:

Behind the ongoing back-and-forth fights over climate change that usually focus on carbon, there has lingered the threat of the powerful greenhouse gas methane being released into the atmosphere and causing even worse trouble. In August we reported on a study that noted methane bubbling up from the seafloor near islands north of Norway, giving scientists a scare. This week in Science, another team reports seeing the same thing during thousands of observations of the East Siberian Arctic Shelf on Russia’s north coast, which is even more worrisome because it’s a huge methane deposit.

Read more ....

Monday, February 22, 2010

Retreating Glaciers May Boost Dust Storms

A massive dust storm streaming from northern Africa across the
Atlantic Ocean in February 2006. Credit: SeaWiFS/NASA


From Cosmos:

SAN DIEGO: The retreat of glaciers and the loss of moisture from soil due to climate change will likely increase the number of large-scale dust storms, such as those that blanketed Sydney in 2009, scientists predict.

“Every year, hundreds of millions of tonnes of African dust are carried westward across the Atlantic to South America, the Caribbean and to the North America,” as well as across the Mediterranean and the Middle East, said Joseph Prospero, an atmospheric chemist at the University of Miami.

Read more ....

Sunday, February 21, 2010

Warmer Planet Temperatures Could Cause Longer-Lasting Weather Patterns

Tony Lupo, a professor of atmospheric science at the University of Missouri, is studying atmospheric blocking and how this weather pattern could be increasing due to global warming. (Credit: University of Missouri)

From Science Daily:

Science Daily (Feb. 21, 2010) — Whether it's never-ending heat waves or winter storms, atmospheric blocking can have a significant impact on local agriculture, business and the environment. Although these stagnant weather patterns are often difficult to predict, University of Missouri researchers are now studying whether increasing planet temperatures and carbon dioxide levels could lead to atmospheric blocking and when this blocking might occur, leading to more accurate forecasts.

Read more ....

Monday, February 15, 2010

Climategate Academic Professor Phil Jones Admits He 'Lost Track' Of Vital Data

Professor Phil Jones from the Climate Researh Unit University of East Anglia

From The Telegraph:

Professor Phil Jones, the academic at the centre of the “climategate” scandal, has admitted he had difficulty “keeping track” of vital data used to back up global warming claims.

Prof Jones stepped down as director of the University of East Anglia’s climate change unit in December after leaked emails appeared to show academics were manipulating data to bolster claims that global warming is caused by humans.

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There Has Been No Global Warming Since 1995

Click Image to Enlarge

From The Daily Mail:

* Data for vital 'hockey stick graph' has gone missing
* There has been no global warming since 1995
* Warming periods have happened before - but NOT due to man-made changes

The academic at the centre of the ‘Climategate’ affair, whose raw data is crucial to the theory of climate change, has admitted that he has trouble ‘keeping track’ of the information.

Colleagues say that the reason Professor Phil Jones has refused Freedom of Information requests is that he may have actually lost the relevant papers.

Read more ....

Thursday, February 11, 2010

Another Blizzard: What Happened To Global Warming?


From Time Magazine:

As the blizzard-bound residents of the mid-Atlantic region get ready to dig themselves out of the third major storm of the season, they may stop to wonder two things: Why haven't we bothered to invest in a snow blower, and what happened to climate change? After all, it stands to reason that if the world is getting warmer — and the past decade was the hottest on record — major snowstorms should become a thing of the past, like PalmPilots and majority rule in the Senate. Certainly that's what the Virginia state Republican Party thinks: the GOP aired an ad last weekend that attacked two Democratic members of Congress for supporting the 2009 carbon-cap-and-trade bill, using the recent storms to cast doubt on global warming.

Read more ....

Tuesday, February 2, 2010

Stratospheric Water Vapor Is A Global Warming Wild Card

Water vapor and radiative processes. (Credit: Image courtesy of National Oceanic and Atmospheric Administration)

From Science Daily:

Science Daily (Feb. 1, 2010) — A 10 percent drop in water vapor ten miles above Earth's surface has had a big impact on global warming, say researchers in a study published online January 28 in the journal Science. The findings might help explain why global surface temperatures have not risen as fast in the last ten years as they did in the 1980s and 1990s.

Read more ....

Trees Growing Faster As Planet Warms

Parker uses diameter tape or 'd-tape' to measure the trees. The tape is calibrated to convert the tree's circumference, the measurement used to determine a tree's biomass. Photo: Kirsten Bauer.

From Live Science:

Trees in the Eastern United States are growing faster than they have in the last two centuries in response to Earth's warming climate, a new study finds.

For more than 20 years forest ecologist Geoffrey Parker, based at the Smithsonian Environmental Research Center outside Washington, D.C., has tracked the growth of 55 stands of mixed hardwood forest plots in Maryland.

Read more ....

Friday, January 29, 2010

Water Vapour Could Be Behind Warming Slowdown

Image: A loss of water vapour from the Earth's stratosphere may have been behind the last decade being cooler than expected. NASA

From Nature News:

Mysterious changes in the stratosphere may have offset greenhouse effect.

A puzzling drop in the amount of water vapour high in the Earth's atmosphere is now on the list of possible culprits causing average global temperatures to flatten out over the past decade, despite ever-increasing greenhouse-gas emissions.

Although the decade spanning 2000 to 2009 ranks as the warmest on record, average temperatures largely levelled off following two decades of rapid increases. Researchers have previously eyed everything from the Sun and oceans to random variability in order to explain the pause, which sceptics have claimed shows that climate models are unreliable.

Read more ....

Tuesday, January 26, 2010

Ozone Hole Healing Could Cause Further Climate Warming

Total Antarctic ozone - September 2009. (Credit: NOAA)

From Science Daily:

Science Daily (Jan. 26, 2010) — The hole in the ozone layer is now steadily closing, but its repair could actually increase warming in the southern hemisphere, according to scientists at the University of Leeds.

The Antarctic ozone hole was once regarded as one of the biggest environmental threats, but the discovery of a previously undiscovered feedback shows that it has instead helped to shield this region from carbon-induced warming over the past two decades.

Read more ....

Monday, January 25, 2010

Global Warming: 'Cooling' Forests Can Heat Too

Pine forest. The simple formula we've learned in recent years -- forests remove the greenhouse gas CO2 from the atmosphere; therefore forests prevent global warming -- may not be quite as simple as we thought. Forests can directly absorb and retain heat, and, in at least one type of forest, these effects may be strong enough to cancel out a good part of the benefit in lowered CO2. (Credit: iStockphoto/Jeremy Sterk)

From Science Daily:

ScienceDaily (Jan. 25, 2010) — The simple formula we've learned in recent years -- forests remove the greenhouse gas CO2 from the atmosphere; therefore forests prevent global warming -- may not be quite as simple as we thought. Forests can directly absorb and retain heat, and, in at least one type of forest, these effects may be strong enough to cancel out a good part of the benefit in lowered CO2. This is a conclusion of a paper that will be published on January 22, in Science by scientists in the Weizmann Institute's Faculty of Chemistry.

Read more ....

Saturday, January 23, 2010

Last Decade Was Warmest on Record, 2009 One of Warmest Years, NASA Research Finds

The map shows temperature changes for the last decade--January 2000 to December 2009--relative to the 1951-1980 mean. Warmer areas are in red, cooler areas in blue. The largest temperature increases occurred in the Arctic and a portion of Antarctica. (Credit: NASA)

From Science Daily:

ScienceDaily (Jan. 22, 2010) — A new analysis of global surface temperatures by NASA scientists finds the past year was tied for the second warmest since 1880. In the Southern Hemisphere, 2009 was the warmest year on record.

Although 2008 was the coolest year of the decade because of a strong La Nina that cooled the tropical Pacific Ocean, 2009 saw a return to a near-record global temperatures as the La Nina diminished, according to the new analysis by NASA's Goddard Institute for Space Studies (GISS) in New York. The past year was a small fraction of a degree cooler than 2005, the warmest on record, putting 2009 in a virtual tie with a cluster of other years --1998, 2002, 2003, 2006, and 2007 -- for the second warmest on record.

Read more ....

UN Climate Panel Blunders Again Over Himalayan Glaciers

Rajendra Pachauri, chairman of the UN's Intergovernmental Panel on Climate Change. (Manan Vatsyayana/AFP/Getty Images)

From Times Online:

The chairman of the UN's Intergovernmental Panel on Climate Change (IPCC), has used bogus claims that Himalayan glaciers were melting to win grants worth hundreds of thousands of pounds.

Rajendra Pachauri's Energy and Resources Institute (TERI), based in New Delhi, was awarded up to £310,000 by the Carnegie Corporation of New York and the lion's share of a £2.5m EU grant funded by European taxpayers.

It means that EU taxpayers are funding research into a scientific claim about glaciers that any ice researcher should immediately recognise as bogus. The revelation comes just a week after The Sunday Times highlighted serious scientific flaws in the IPCC's 2007 benchmark report on the likely impacts of global warming.

Read more ....

Thursday, January 21, 2010

Himalayan Melting: How A Climate Panel Got It Wrong

A fast-moving glacial stream rushes down from Rakaposhi Mountain in Pakistan's North-West Frontier Province. Paula Bronstein / Getty

From Time Magazine:

Between the undying controversy that was "Climategate" and the near collapse of the Copenhagen summit on global warming, 2009 was not a great year for climate scientists or activists. Less than a month into the new year, 2010 isn't looking much better.

On Wednesday (the day after Republican Scott Brown, an opponent of cap and trade, seized a U.S. Senate seat in Massachusetts), a new scandal broke over climate science. Faced with criticism of a widely quoted piece of analysis from its 2007 climate assessment that warned that Himalayan glaciers could melt by 2035, the U.N. Intergovernmental Panel on Climate Change (IPCC) was forced to admit to relying on dubious scientific sources, apologized and retracted its earlier estimate. That estimate of the rate of Himalayan glacier loss because of warming, which appeared in the same assessment that earned the global body a share of the Nobel Peace Prize, was "poorly substantiated," the IPCC said.

Read more ....

Monday, January 18, 2010

World Misled Over Himalayan Glacier Meltdown

The west Himalayan range includes 15,000 glaciers. (Simon Fraser/Science Photo Library)

From Times Online:

A WARNING that climate change will melt most of the Himalayan glaciers by 2035 is likely to be retracted after a series of scientific blunders by the United Nations body that issued it.

Two years ago the Intergovernmental Panel on Climate Change (IPCC) issued a benchmark report that was claimed to incorporate the latest and most detailed research into the impact of global warming. A central claim was the world's glaciers were melting so fast that those in the Himalayas could vanish by 2035.

Read more ....

Friday, January 8, 2010

Warmer Climate Could Stifle Carbon Uptake By Trees, Study Finds

A surprising new CU-Boulder study indicates subalpine forests in the West will soak up less carbon dioxide as the climate warms and the growing seasons lengthen. (Credit: Image courtesy Steve Miller, CIRES)

From Science Daily:

Science Daily (Jan. 8, 2010) — Contrary to conventional belief, as the climate warms and growing seasons lengthen subalpine forests are likely to soak up less carbon dioxide, according to a new University of Colorado at Boulder study.

As a result, more of the greenhouse gas will be left to concentrate in the atmosphere.

Read more ....