气候变化研究进展2018，Vol.14Issue(2)：120-126,7.DOI:10.12006/j.issn.1673-1719.2017.188
南极长城站和中山站降水形态变化特征的研究
Variations of precipitation form at the Great Wall station and Zhongshan station, Antarctica
摘要
Abstract
In this paper, different precipitation form data (rainfall days and snowfall days) were analyzed based on the observations of automatic weather stations at the Great Wall station (GW) and Zhongshan station (ZS) during 1985-2015 and 1989-2015, respectively. The relationship between surface air temperature, Amundsen Sea Low and different precipitation form in the station were also discussed. The results showed that the precipitation days at GW were more than at ZS. The annual total precipitation days, rainfall days and snowfall days showed increasing trends at GW. During 1985-2015, the number of annual total precipitation days, rainfall days and snowfall days at GW were 236-343 d, 74-185 d and 157-282 d, respectively, with an increasing trend of 4.51 d/10a, 2.68 d/10a and 1.25 d/10a, respectively. At ZS, where the snowfall was the main precipitation form, the annual total precipitation days showed a slight decrease (1.30 d/10a) during 1989-2015 (104-173 d). The temperature was positively correlated with the ratio between rainfall days and precipitation days, especially in the autumn Mar–May, the ratio between rainfall days and precipitation days had an increasing trend significantly (4.36%/10a). It is suggested that a warmer climate may be associated with higher fraction of precipitation falling as rain in the vicinity of GW. And the Amundsen Sea Low also has an impact on the precipitation form in GW. The eastward moving of Amundsen Sea Low in autumn leads to the warm, wet winds that blow to the Antarctic Peninsula stronger. It is conducive to the rainfall in GW.关键词
南极/长城站/中山站/降水形态Key words
Antarctica/Great Wall station/Zhongshan station/Precipitation form引用本文复制引用
韩微,效存德,郭晓寅,张东启..南极长城站和中山站降水形态变化特征的研究[J].气候变化研究进展,2018,14(2):120-126,7.基金项目
国家自然科学基金(41425003,41771064) （41425003,41771064）
中国气象科学研究院基本科研业务项目(2015Z005) （2015Z005）
