2010年气温有史以来最高-凯发k8官网

2010年气温有史以来最高
文章来源:未知 文章作者:enread 发布时间:2011-01-14 06:13 字体: [ ] 
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global surface temperatures in 2010 tied 2005 as the warmest on record, according to an analysis released wednesday by researchers at nasa's goddard institute for space studies (giss) in new york. the two years differed by less than 0.018 degrees 1. the difference is smaller than the 2 in comparing the temperatures of recent years, putting them into a 3 tie. in the new analysis, the next warmest years are 1998, 2002, 2003, 2006 and 2007, which are 4 tied for third warmest year. the giss records begin in 1880.

the analysis found 2010 approximately 1.34 f warmer than the average global surface temperature from 1951 to 1980. to measure climate change, scientists look at long-term trends. the temperature trend, including data from 2010, shows the climate has warmed by approximately 0.36 f per decade since the late 1970s.

"if the warming trend continues, as is expected, if greenhouse gases continue to increase, the 2010 record will not stand for long," said james hansen, the director of giss.

the analysis produced at giss is compiled from weather data from more than 1000 meteorological stations(气象站) around the world, satellite observations of sea surface temperature and antarctic research station measurements. a computer program uses the data to calculate temperature anomalies(异常现象) -- the difference between surface temperature in a given month and the average temperature for the same period during 1951 to 1980. this three-decade period acts as a baseline for the analysis.

the resulting temperature record closely matches others independently produced by the met office hadley centre in the united kingdom and the national oceanic and 5 administration's national climatic data center.

the record temperature in 2010 is particularly noteworthy(值得注意的) , because the last half of the year was marked by a transition to strong la niña conditions, which bring cool sea surface temperatures to the eastern tropical pacific ocean.

"global temperature is rising as fast in the past decade as in the prior two decades, despite year-to-year 6(波动,起伏) associated with the el niño-la niña cycle of tropical ocean temperature," hansen and colleagues reported in the dec. 14, 2010, issue of reviews of geophysics.

a 7 spell also struck this winter across northern europe. the event may have been influenced by the decline of arctic sea ice and could be linked to warming temperatures at more northern 8(北纬) .

arctic sea ice acts like a blanket, insulating(绝缘,隔离) the atmosphere from the ocean's heat. take away that blanket, and the heat can escape into the atmosphere, increasing local surface temperatures. regions in northeast canada were more than 18 degrees warmer than normal in december.

the loss of sea ice may also be driving arctic air into the middle latitudes. winter weather patterns are notoriously(众所周知地) 9(混沌的) , and the giss analysis finds seven of the last 10 european winters warmer than the average from 1951 to 1980. the unusual cold in the past two winters has caused scientists to begin to speculate about a potential connection to sea ice changes.

"one possibility is that the heat source due to open water in hudson bay 10 arctic wind patterns, with a 11(交互的) pattern that has arctic air downstream pouring into europe," hansen said.



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1 hlhx9     
n./adj.华氏温度;华氏温度计(的)
参考例句:
  • he was asked for the boiling point of water in fahrenheit.他被问到水的沸点是华氏多少度。
  • the thermometer reads 80 degrees fahrenheit.寒暑表指出华氏80度。
2 nlfwk     
n.易变,靠不住,不确知,不确定的事物
参考例句:
  • her comments will add to the uncertainty of the situation.她的批评将会使局势更加不稳定。
  • after six weeks of uncertainty,the strain was beginning to take its toll.6个星期的忐忑不安后,压力开始产生影响了。
3 bu3wa     
adj.统计的,统计学的
参考例句:
  • he showed the price fluctuations in a statistical table.他用统计表显示价格的波动。
  • they're making detailed statistical analysis.他们正在做具体的统计分析。
4 yuxwa     
ad.根据统计数据来看,从统计学的观点来看
参考例句:
  • the sample of building permits is larger and therefore, statistically satisfying. 建筑许可数的样本比较大,所以统计数据更令人满意。
  • the results of each test would have to be statistically independent. 每次试验的结果在统计上必须是独立的。
5 6eayr     
adj.大气的,空气的;大气层的;大气所引起的
参考例句:
  • sea surface temperatures and atmospheric circulation are strongly coupled.海洋表面温度与大气环流是密切相关的。
  • clouds return radiant energy to the surface primarily via the atmospheric window.云主要通过大气窗区向地表辐射能量。
6 5ffd9bfff797526ec241b97cfb872d61     
波动,涨落,起伏( fluctuation的名词复数 )
参考例句:
  • he showed the price fluctuations in a statistical table. 他用统计表显示价格的波动。
  • there were so many unpredictable fluctuations on the stock exchange. 股票市场瞬息万变。
7 pofzl     
adj.凉快的,寒冷的
参考例句:
  • i feel chilly without a coat.我由于没有穿大衣而感到凉飕飕的。
  • i grew chilly when the fire went out.炉火熄灭后,寒气逼人。
8 90df39afd31b3508eb257043703bc0f3     
纬度
参考例句:
  • latitudes are the lines that go from east to west. 纬线是从东到西的线。
  • it was the brief indian summer of the high latitudes. 这是高纬度地方的那种短暂的晚秋。
9 rutyd     
adj.混沌的,一片混乱的,一团糟的
参考例句:
  • things have been getting chaotic in the office recently.最近办公室的情况越来越乱了。
  • the traffic in the city was chaotic.这城市的交通糟透了。
10 tzuzg0     
adj.不自然的,假装的
参考例句:
  • she showed an affected interest in our subject.她假装对我们的课题感到兴趣。
  • his manners are affected.他的态度不自然。
11 xh3yf     
n.跷跷板
参考例句:
  • prices have gone up and down like a seesaw this year.今年的价格像跷跷板一样时涨时跌。
  • the children are playing at seesaw.孩子们在玩跷跷板。
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