Effects of spring Arctic sea ice on summer drought in the middle and high latitudes of Asia

被引：1
|
作者：
Dong Chen [1 ,2 ]
Ya Gao [1 ,2 ]
Ying Zhang [1 ,2 ,3 ]
Tao Wang [1 ,2 ,3 ]
机构：
[1] Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences
[2] Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/International Joint Laboratory on Climate and Environment Change, Nanjing University of Information Science & Technology
[3] Climate Change Research Center, Chinese Academy of Sciences
来源：
Atmospheric and Oceanic Science Letters | 2022年 / 15卷 / 03期
基金：
美国国家科学基金会; 国家重点研发计划;
关键词：
北极海冰; 夏季亚洲干旱; 雪深; 土壤湿度;
D O I：
暂无
中图分类号：
P731.15 [海冰]; P426.616 [降水引起的灾害];
学科分类号：
0706 ; 070601 ; 0707 ;
摘要：
本文分析了亚洲中高纬度地区(MHA)年际尺度夏季干旱的主模态时空变化特征,以及影响第一模态的主要影响因子和可能的物理过程.结果显示该区域夏季干旱第一模态主要呈现一个南北偶极性的分布.而影响MHA夏季干旱的主要影响因子为前春北极海冰.当春季斯瓦尔巴群岛附近海冰偏多,而巴伦支海-喀拉海海冰减少时,通过冰-气相互作用,使得MHA北部春季降水增加,雪深加厚,土壤湿度偏高,而南部则相反.然后这样的土壤湿度条件从春季持续到夏季,通过土壤湿度-大气反馈影响夏季MHA降水和温度变化,最终对夏季干旱主模态产生影响.
引用
收藏
页码：8 / 12
页数：5
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