首页
登录
职称英语
In the world of climate change, it is in the Earth’s Cold regions where tren
In the world of climate change, it is in the Earth’s Cold regions where tren
游客
2025-03-23
33
管理
问题
In the world of climate change, it is in the Earth’s Cold regions where trends can most easily be seen. The cryosphere, where water is found in solid form, is among the most sensitive regions to temperature change.
The sensitivity of ice and snow to temperature changes is an early indicator of even relatively small differences, says University of Colorado at Boulder senior researcher Richard Armstrong. He has found that today’s receding and thinning sea ice, mountain glacier mass losses, decreasing snow extent, melting permafrost (永久冻土), and rising sea level are all consistent with warming.
Global mean temperatures have risen one degree Fahrenheit over the past 100 years, with more than half of the increase occurring in the last 25 years, observes Armstrong who is affiliated with the National Snow and Ice Data Center headquartered at CU-Boulder.
"As slight as that may seem, it’s enough to make a difference," said Armstrong. "Now, long-term monitoring of a series of cold region, or cryospheric, parameters (参数) shows that for several decades the amounts of snow and ice around the world have been decreasing. "
The extent of Arctic sea ice is shrinking by about 3 percent per decade, but the trends are not uniform. While recent studies have indicated that the ice thickness also had decreased over several decades, new information shows that the ice may have thinned rapidly, Armstrong said. Examination of springtime ice thickness in the Arctic Ocean indicates that the mean ice thickness decreased 1.5 meters (4. 8 feet) between the mid-1980s and early 1990s.
To mark its 25th anniversary, the National Snow and Ice Data Center has organized a special session at the 2001 Fall Meeting of American Geophysical Union, taking place this week in San Francisco, that illuminates overall changes in the cryosphere.
The session begins Tuesday and extends through Thursday afternoon, with 75 contributions from all areas of cryospheric study. Papers and posters include examinations of lake and river ice, glacier dynamics, and mass ice balance studies in polar and continental glaciers, regional and polar snow cover trends, and variations in Canadian ice cap elevations.
选项
A、in the oceans
B、in icy and snowy regions
C、on high mountains
D、in the south hemisphere
答案
B
解析
细节题。根据文章开头,全球气候变化的趋势最容易在寒冷地区感觉到,所以B符合这个意思,是本题正确答案。
转载请注明原文地址:http://tihaiku.com/zcyy/4009213.html
相关试题推荐
Withthepaceofchangequickening,moreandmorescientistsfindithardtokee
Trendsofclimatechangecanbemosteasilysensed______.[br]Thespecialses
Trendsofclimatechangecanbemosteasilysensed______.[br]AccordingtoAr
Trendsofclimatechangecanbemosteasilysensed______.[br]Thesignsofgl
Intheworldofclimatechange,itisintheEarth’sColdregionswheretren
Asamediumofexchange,moneypermitstheseparationofexchangeintothet
Asamediumofexchange,moneypermitstheseparationofexchangeintothet
Change—ortheabilitytoadaptoneselftoachangingenvironment—isessentia
Change—ortheabilitytoadaptoneselftoachangingenvironment—isessentia
Ourresearchhasfocusedonadrugwhichisso______astobeabletochangebr
随机试题
Whatdoesthemanhavetodonow?[originaltext]M:Ihavetomakeachoicesoon
Formilesaround,theneighborhoodswereemptyandsilent.Storesweredark,
Whenwilltheinvestors’conferencebeheld?[originaltext]TheBritishprime
[originaltext]M:Owenjustboughtasecond-handTV.Doyouknowthepricehepa
SlanginEnglishTodaywe’lldiscussacommonli
______areboundmorphemesbecausetheycannotbeusedasseparatewords.A、Roots
调查报告属于事务文书,但在日常生活中,一般以公文的形式出现。()
根据我国现行的关于工程预付款的相关规定,下列说法中正确的是()。A.当约
关于投资后管理阶段获取被投企业信息的方式,以下表述正确的是( )A.为保障及时
能够引起有机体的定向活动并能满足某种需要的外部条件叫()。A:爱好 B:诱因
最新回复
(
0
)