TEMPERATURE CHANGES OVER EURASIA DURING THE LATE SUMMER OF 1979
TEMPERATURE CHANGES OVER EURASIA DURING THE LATE SUMMER OF 1979作者机构：Academia Sinica Beijing Department of Meteorology Honolulu Institute of Atmospheric Physics U.S.A. University of Hawaii
出 版 物：《Advances in Atmospheric Sciences》 (大气科学进展(英文版))
年 卷 期：1985年第2卷第2期
页 面：200-214页
学科分类：0706[理学-大气科学] 0816[工学-测绘科学与技术] 0825[工学-航空宇航科学与技术]
主 题：over TEMPERATURE CHANGES OVER EURASIA DURING THE LATE SUMMER OF 1979
摘 要：During the late summer of 1979, massive changes occurred in the distribution of temperature over Eur asia north of 15°N. At 300 hPa, zonal mean temperature averaged over Eurasia along 20°-25°N decreased sharply around 23 August. An abrupt decrease in 300 hPa zonal mean temperature also occurred over extensive mid-latitude zones (40°-55°N) around 18 August, i, e., about 5 days prior to the. monsoon withdrawal over South *** intensity and location of N-S oriented, vertical overturning underwent significant changes over Eurasia during the transition from summer to fall. Near 20°-25°N, zonal mean updrafts weakened considerably during the transition period (18-27 August), Around 45°N, zonal mean downdrafts and the associated cooling (radiative) rate increased considerably during the transition period,Near 15FFN, 300 hPa zonal mean temperature fluctuated nearly periodically with an approximate 40-day period. These fluctuations appear to be associated with a small imbalance between 40-day filtered adiabatic cooling (heating) and diabatic heating (cooling).
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