On the magnitude of temperature decrease in the equatorial regions during the Last Glacial Maximum  

作　　者：王宁练 姚檀栋 施雅风 L.G.Thompson J.Cole-Dai P.-N.Lin and M.E.Davis 

机构地区：[1]Laboratory of Ice Core and Cold Regions Environment, Lanzhou Institute of Glaciology and Geocryology, Chinese Academy of Sciences [2]Byrd Polar Research Center,Ohio State University

出　　处：《Science China Earth Sciences》1999年第S1期80-90,共11页中国科学（地球科学英文版）

基　　金：Project supported by the Chinese National and CAS' Qinghai-Tibet Project (Grant No. KZ951-A1-204-02).

摘　　要：Based on the data of temperature changes revealed by means of various palaeothermometric proxy indices,it is found that the magnitude of temperature decrease became large with altitude in the equatorial regions during the Last Glacial Maximum. The direct cause of this phenomenon was the change in temperature lapse rate, which was about(0.1±0.05)℃/100 m larger in the equator during the Last Glacial Maximum than at present. Moreover, the analyses show that CLIMAP possibly underestimated the sea surface temperature decrease in the equatorial regions during the Last Glacial Maximum.Based on the data of temperature changes revealed by means of various palaeothermometric proxy indices, it is found that the magnitude of temperature decrease became large with altitude in the equatorial regions during the Last Glacial Maximum. The direct cause of this phenomenon was the change in temperature lapse rate, which was about (0.1 ±0.05)℃/100 m larger in the equator during the Last Glacial Maximum than at present. Moreover, the analyses show that CLIMAP possibly underestimated the sea surface temperature decrease in the equatorial regions during the Last Glacial Maximum.

关 键 词：EQUATORIAL REGIONS Last GLACIAL Maximum TEMPERATURE variation. 

分 类 号：P343.6[天文地球—水文科学]