Substream - sub_gw_impact_heatwaves

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  2. 13-08-2004 eco nws - global warming - impact - heat waves - heat waves here to stay - Heatwaves of the kind that killed 30,000 people in Europe last year will become more frequent, more intense and longer-lasting, according to reports by US scientists today. Gerald Meehl and Claudia Tebaldi of the US national centre for atmosphere research (NCAR) report in the journal Science that the predicted increase in heat-absorbing greenhouse gases over the next hundred years is likely to intensify the pattern of heatwaves established in Europe and North America. Computer models show that heatwaves will become more severe in the south and west of the US and the Mediterranean. (reuters)

  3. 01-12-2004 eco nws - global warming - impact - heat waves - heat waves here to stay - Emissions of greenhouse gases have more than doubled the risk of European heatwaves similar to last year's, according to a study by UK scientists. In 2003, temperatures across western Europe soared by several degrees Celsius above normal - and five degrees in the case of Switzerland. It is thought that the unusually hot summer caused tens of thousands of excess deaths. Details of the study appear in the latest issue of the journal Nature. (bbc)

  4. 03-12-2004 eco nws - global warming - impact - heat waves - heat wave study could enable major lawsuits - A study of a 2003 heatwave in Europe may give Pacific islanders and environmentalists new ammunition for legal cases blaming the United States for global warming, advocates said on Thursday. Claims linked to climate change could dwarf billion-dollar awards against tobacco companies if UN forecasts to 2100 of rising temperatures, higher sea levels, catastrophic storms and droughts turn out to be true, they said. 'This is the kind of evidence that will help those seeking compensation,' Peter Roderick, director of the Climate Justice Programme which advises plaintiffs, said of a study of Europe's 2003 heatwave published on Wednesday in the journal Nature. (planet ark)

  5. 14-12-2004 eco nws - global warming - impact - heat waves - report - Hadley Centre for Climate Change Report - By 2050 heatwaves like that of 2003, which killed 15,000 in Europe and pushed British temperatures above 38C (100F) for the first time, will seem 'unusually cool', the Hadley Centre for Climate Change says. In its report Uncertainty, Risk and Dangerous Climate Change, to be published today at the climate talks in Buenos Aires, it estimates that average temperatures will rise by 3.5C, well above the 2C which the EU says is the limit to avoid catastrophic global warming. It also says that the Greenland ice sheet could disappear, ultimately raising the global sea level by 7 metres. This could proceed at the rate of 5.5mm a year, and this with the 3mm rise caused by the thermal expansion of sea water would soon put large part of Britain, including the London docklands, under threat. Once that process began it would be impossible to 'regrow' the ice cap, the report says. The government is already concerned about the Greenland melt affecting the British climate and is spending �20m on studying it. The fresh water being added to the Atlantic from the Arctic and Greenland ice threatens to slow or stop the current which warms the North Atlantic, the Gulf Stream. Professor Niels Reeh of the Danish Polar Institute, who has been studying the Greenland ice for 20 years, says the loss between 1995 and 1999 was about 50 cubic kilometres of ice a year, enough to raise the global sea level by 0.13mm a year. (guardian)

  6. 03-08-2006 eco nws - global warming - impact - heat waves - weather - French heatwave claims 64 lives - Sixty-four people have died in France in a heatwave that has gripped much of Europe for two weeks. French officials said 40 of the victims were over 75 years old. There are fears that the death toll could rise, even though the high temperatures, above 35C (95F) in some places, dropped after overnight storms. The heat has brought back memories of 2003, when some 15,000 people died in France, most of them elderly. (bbc)

  7. 03-08-2006 eco nws - global warming - impact - heat waves - weather - Deaths mount amid California heat - The heatwave that has been baking California since mid-July is being blamed for more than 130 deaths across the state, the authorities have said. Many of the deaths have been in the Central Valley, where temperatures have reached 46C (115F) in some areas. Among the worst-hit areas is Fresno, where the local mortuary is struggling to deal with dozens of bodies. The heat has also hit the agriculture sector, killing 25,000 cattle and 700,000 poultry, farmers say. (bbc)

  8. 11-10-2011 eco nws - global warming - impact - weather - heat waves - drought - blame - can be done - Laying the Blame for Extreme Weather - ScienceDaily (Oct. 11, 2011) � Floods, tornadoes, droughts and wildfires: They are all weather-related, but blaming the latest meteorological disaster on climate change has always been a tricky matter that climate scientists have been shy to do. After all, how can you point to a specific and local event, such as a tornado or dry spell, and say it is caused by something as long-term and huge as global warming? "That's been the mantra of the community and I think it's wrong," said climate scientist Kevin Trenberth of the National Center for Atmospheric Research (NCAR) in Colorado. Trenberth and other climate scientists will be giving presentations that connect extreme weather over the past decade to climate change at a session of The Geological Society of America meeting in Minneapolis on October 11, 2011. The session, entitled Extreme Climate and Weather Events: Past, Present and Future, begins with Trenberth's presentation, The Russian Heat Wave and Other Climate Extremes of 2010. He cautions, however, that the harsh weather certainly didn't stop with 2011 and they all can be traced to the place where global warming stores its heat, year after year: the oceans. The sea surface temperatures near all the extreme flooding events of 2010 were at record levels, Trenberth explains. That includes the Caribbean, Gulf of Mexico, N. Atlantic and the Indian Ocean. "All of the storms are being formed in an environment that is warmer and wetter than before," said Trenberth. "The main thing that has happened with climate change is that you have changed the environment." Specifically, the waters are about one degree Fahrenheit warmer than pre-1970 values, leading to air that's four percent wetter. All that additional moisture and heat in the air feeds storms. "That's the climate change kicker. It's the extra nudge that indeed makes you break records." Another way of looking at it is in terms of the odds of extreme weather events. Extreme weather is always possible, after all. But with warmer oceans, such events are easier to create. "We're loading the dice in favor of extreme weather events," said Trenberth. The same goes for droughts and subsequent wild fires. They are the flip-side of the extreme storms in a global atmosphere. While unusually wet monsoons were flooding Pakistan in 2010, the same event helped to block moisture from reaching southern Russia. That led to heat waves and fires. This kind of situation reinforces cyclonic and anticyclonic patterns in the atmosphere which make some areas wetter and others drier and hotter. "So there are dynamical connections," Trenberth said. "You can't disrupt one part of the atmosphere without getting effects in the whole." And with the history and continued releases of carbon dioxide and other greenhouse gases, plus pollution into the atmosphere, there is no doubt that the system is being disrupted, he said.