Strong subsurface soil temperature feedbacks on summer climate variability over the arid/semi‐arid regions of East Asia
Strong subsurface soil temperature feedbacks on summer climate variability over the arid/semi‐arid regions of East Asia
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DOI：
10.1002/asl2.504
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发表时间：
2014-10
影响因子：
3
通讯作者：
Lingyun Wu;Jingyong Zhang
中科院分区：
文献类型：
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作者：
Lingyun Wu;Jingyong Zhang
通过两个长期区域气候模式模拟，探讨了土壤温度-大气耦合对东亚夏季气候年际变化的影响。结果表明，土壤温度-大气耦合取决于气候条件，主要影响干旱/半干旱区夏季气候变率。在这些地区，地下土壤温度反馈对夏季地表气温变率的放大起重要作用，约占总变率的30-70%。在干旱/半干旱区，降水变率的反馈比地表气温变率的反馈弱，但在西部许多地区仍然显著。
Two long‐term regional climate model simulations with and without subsurface soil temperature feedbacks are performed to investigate the role of soil temperature–atmosphere coupling in influencing interannual variability of summer climate over East Asia. Results indicate that soil temperature–atmosphere coupling depends on climate regimes, mainly affecting summer climate variability over the arid/semi‐arid regions. Over these areas, subsurface soil temperature feedbacks play an important role in amplifying summer surface air temperature variability, accounting for about 30–70% of total variance. The feedbacks on precipitation variability are weaker than those on surface air temperature variability over the arid/semi‐arid regions, but are still significant over many areas of western part.