返回首页您现在的位置: 主页 > 英语资讯 > 英语新闻 > 文章内容

中东沙漠的吸热率影响印度洋季风强弱

来源: 英语作文网 时间: 2016-07-31 阅读:
Variations in the ability of sand particles kicked into the atmosphere from deserts in the Middle East to absorb heat can change the intensity1 of the Indian Summer Monsoon2, according to new research from The University of Texas at Austin. The research was published July 28 in Scientific Reports, an open access journal from the publishers of Nature.
 
The Indian monsoon is a period of intense rainfall that more than a billion people rely on to bring rains to farmland. The results of the study could help improve monsoon prediction models, which usually use a constant value for sand particles' heat-absorbing ability. Because the absorbing ability varies greatly with region and time, assigning a constant heat-absorbing ability for the particles tends to underestimate the impact that absorbed heat can have on the monsoon system, the authors said. 
 
The study was led by Qinjian Jin, a postdoctoral researcher at the Massachusetts Institute of Technology, who conducted the research while earning his Ph.D. at The University of Texas at Austin's Jackson School of Geosciences. He collaborated3 with Zong-Liang Yang, a professor in the Jackson School's Department of Geological Sciences, and Jiangfeng Wei, a research scientist in the department.
 
The deserts of the Middle East are a large source of "mineral dust," small particles of sand that are brought into the atmosphere by wind and thermals4. Once in the atmosphere, the dust can heat parts of the atmosphere by absorbing energy from sunlight.
 
The researchers found that mineral dust that originates in the Middle East can strengthen the Indian Summer Monsoon by heating the atmosphere above the Iranian Plateau and the Arabian Sea. But the dust's ability to absorb heat affected5 how much the dust influenced the monsoon. Dust that absorbed heat more efficiently6 was linked with increases in monsoon rainfall. 
 
"The heating ability of dust aerosols7 largely determines how the monsoon responds to dust," Jin said.



  
1 intensity     
n.强烈,剧烈;强度;烈度
参考例句:
  • I didn't realize the intensity of people's feelings on this issue.我没有意识到这一问题能引起群情激奋。
  • The strike is growing in intensity.罢工日益加剧。


  • 2 monsoon     
    n.季雨,季风,大雨
    参考例句:
  • The monsoon rains started early this year.今年季雨降雨开始得早。
  • The main climate type in that region is monsoon.那个地区主要以季风气候为主要气候类型。


  • 3 collaborated     
    合作( collaborate的过去式和过去分词 ); 勾结叛国
    参考例句:
  • We have collaborated on many projects over the years. 这些年来我们合作搞了许多项目。
  • We have collaborated closely with the university on this project. 我们与大学在这个专案上紧密合作。


  • 4 thermals     
    热裂法炭黑; 上升的热气流,温暖内衣裤( thermal的名词复数 )
    参考例句:
  • Are the thermals picking up any signs of life? 热量探测器有没有检测到生命迹象?
  • Thermals are rising air currents caused by heat. 上升暖气流是由于受热而上升的气流。


  • 5 affected     
    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。


  • 6 efficiently     
    adv.高效率地,有能力地
    参考例句:
  • The worker oils the machine to operate it more efficiently.工人给机器上油以使机器运转更有效。
  • Local authorities have to learn to allocate resources efficiently.地方政府必须学会有效地分配资源。


  • 7 aerosols     
    n.气溶胶( aerosol的名词复数 );喷雾剂;(气体中的)浮粒;喷雾器
    参考例句:
  • Aerosols are present throughout the atmosphere. 气溶胶存在于整个大气层。 来自辞典例句
  • Deodorants are available as aerosols or roll-ons. 除臭剂有喷雾装或滚抹装。 来自辞典例句



  • 上一篇:雄性乌贼战斗时不会虚张声势 下一篇:二手大麻烟雾一分钟即可损坏血管

    相关阅读