Soil moisture influence on summertime surface air temperature over East Asia

被引：8

作者：

Jingyong Zhang

Wenjie Dong

机构：

[1] Beijing Normal University,State Key Laboratory of Earth Surface Processes and Resource Ecology

[2] Chinese Academy of Sciences,Institute of Atmospheric Physics

[3] State University of New York at Albany,Atmospheric Sciences Research Center

来源：

Theoretical and Applied Climatology | 2010年 / 100卷

关键词：

Soil Moisture; Land Surface Model; Feedback Parameter; Soil Moisture Data; Global Land Data Assimilation System;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Soil moisture influence on surface air temperature in summer is statistically quantified across East Asia using the Global Land Data Assimilation System soil moisture and observational temperature. The analysis uses a soil moisture feedback parameter computed based on lagged covariance ratios. It is found that significant negative soil moisture feedbacks on temperature mainly appear over the transition zones between dry and wet climates of northern China and Mongolia. Over these areas, the feedbacks account for typically 5–20% of the total temperature variance, with the feedback parameter of −0.2°C to −0.5°C (standardized soil moisture)−1. Meanwhile, positive feedbacks may exist over some areas of Northeast Asia but are much less significant. These findings emphasize the importance of soil moisture-temperature feedbacks in influencing summer climate variability and have implications for seasonal temperature forecasting.

引用

页码：221 / 226

页数：5

共 113 条

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