La Nina Pacific cooling may last to mid-year: U.N.
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A sea-surface cooling in the Pacific,  which may have contributed to strong hurricanes in the United  States and a freeze-up in China, could last at least until  mid-year, the U.N. weather body WMO said on Monday.
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Fighting global warming will get tougher once the Kyoto protocol ends in 2012 and the world must try to get Washington involved in the long term, the head of the U.N. Environment Program said on Wednesday.
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&quot;La Nina,&quot; the abnormal cooling of  Pacific Ocean surface temperatures, is as powerful as its  brother &quot;El Nino&quot; and the effects of global warming on their  cycle need to be monitored, UK scientists said on Wednesday.
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The U.N. climate panel agreed on Thursday it was "very likely" that human activities were the main cause of global warming in the past 50 years, stepping up certainty from a 2001 report, delegates said.
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The world was slightly warmer than  average in the first four months of this year, but 2007 may not  turn out to be the hottest on record, Britain&#39;s official  weather forecaster said on Tuesday.
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Scientists warned Tuesday that a long-term increase in global temperature of 3.5 degrees could threaten Latin American water supplies, reduce
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Winter will be warmer than normal in the U.S. Western and Plains states and colder than usual in the Southeast and mid-Atlantic regions, but the return of El Nino is making it hard for forecasters to hazard a guess for much of the country, meteorologists said on Wednesday.
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VIENNA, Aug 28 (IPS) - Human-made emissions of greenhouse gases believed  to provoke damaging climate change must peak in the next 10 to 15  years, and be reduced afterwards by well over 50 percent from  current levels until 2050, a top UN climate official said here  Tuesday.
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Arctic sea ice next summer may shrink below the record low last year, according to a University of Washington climatologist. Ignatius Rigor spoke Monday at the Alaska Forum on the Environment and said global warming combined with natural cyclical changes likely will continue to push ice into the North Atlantic Ocean.
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A low-pressure area over the central  Atlantic Ocean has &quot;some potential for tropical cyclone  formation&quot; during the next day or so before winds become less  favorable for development, the U.S. National Hurricane Center  said Thursday in a report.
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Affected by a weak El Nino, winter  weather in the United States will be warmer in the West and  cooler and wetter in the South and Southeast, forecasters  predicted Thursday.
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Earth may be close to the warmest it   has been in the last million years, especially in the part of   the Pacific Ocean where potentially violent El Nino weather   patterns are born, climate scientists reported on Monday.
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This year is set to be the sixth warmest  worldwide since records began, stoked by global warming linked  to human activities, the British Meteorological Office and the  University of East Anglia said on Thursday.
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Pacific Ocean equatorial waters off  South America have warmed, indicating a weak-to-moderate El  Nino weather phenomenon this year, the World Meteorological  Organization (WMO) said on Tuesday.
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The weather anomaly La Nina could  influence global weather patterns through the early part of  2008, according to the National Weather Service.
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UNITED NATIONS, Sept. 24 -- U.N. Secretary General Ban Ki-moon said Monday that a 15-year international effort to stem global warming has not halted the buildup of greenhouse gas emissions and that governments must take "unprecedented action" to reverse the trend.
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A noted U.S. hurricane forecaster said on Tuesday the milder-than-expected Atlantic season will produce just two more tropical storms and no more "major" hurricanes due to El Nino conditions in the Pacific.