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2005 Could Be Warmest Year Recorded; Says Nasa
Topic Started: Friday Feb 11 2005, 10:53 PM (102 Views)
imitation	Friday Feb 11 2005, 10:53 PM Post #1
Unregistered	A weak El Nino and human-made greenhouse gases could make 2005 the warmest year since records started being kept in the late 1800s, NASA scientists said this week. While climate events like El Nino -- when warm water spreads over much of the tropical Pacific Ocean --affect global temperatures, the increasing role of human-made pollutants plays a big part. "There has been a strong warming trend over the past 30 years, a trend that has been shown to be due primarily to increasing greenhouse gases in the atmosphere," said James Hansen of NASA's Goddard Institute for Space Studies, based in New York. The warmest year on record was 1998, with 2002 and 2003 coming in second and third, respectively. Short-term factors like large volcanic eruptions that launched tiny particles of sulfuric acid into the upper atmosphere in 1963, 1982 and 1991 can change climates for periods ranging from months to a few years. Last year was the fourth-warmest recorded, with a global mean temperature of 57 degrees Fahrenheit (14 C), which was about 1.5 degrees warmer than the middle of the century, NASA scientist Drew Shindell said in an interview. Average temperatures taken from land and surfaces of the oceans showed 2004 was 0.86 degrees Fahrenheit (0.48 C) above the average temperature from 1951 to 1980, according to Hansen. The spike in global temperatures in 1998 was associated with one of the strongest El Ninos of recent centuries and a weak El Nino contributed to the unusually high global temperatures in 2002 and 2003, NASA said. Carbon dioxide, emitted by autos, industry and utilities, is the most common greenhouse gas. Hansen also said that the Earth's surface now absorbs more of the sun's energy than gets reflected back to space. Source: Reuters
Deleted User	Saturday Feb 12 2005, 10:59 AM Post #2
Deleted User	It's been the coldest and wettest for 2005 so far here...
Deleted User	Monday Feb 14 2005, 02:55 PM Post #3
Deleted User	Up here in the Mountains it's been very weird lately. In the morning it's usually fine then by mid-day it's starts to rain really hard then by 3pm it starts hailing and then evening it's fine. This was going on for a couple of weeks. It was the weirdest weather I have ever come across. :wacko:
Tim the Wiz	Friday Feb 18 2005, 03:43 AM Post #4
#1 Retrogamer Posts: 236 Group: Members Member #46 Joined: February 17, 2005	No joke, we can really feel it down here in Perth, although its getting cooler now.
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