Soil moisture influence on summertime surface air temperature over East Asia

Zhang, Jingyong; Dong, Wenjie

doi:10.1007/s00704-009-0236-4

Cited by 31 publications

(25 citation statements)

References 34 publications

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“…Over these areas, soil moisture interactions contribute to half or more of the total T mean variance (Figure 5a). These hot spots largely coincide with the regions of strong soil moisture feedbacks on T mean identified by Zhang and Dong [2010] by statistical analyses to the Global Land Data Assimilation System soil moisture [ Rodell et al , 2004] and observational temperature, and European Centre for Medium‐Range Weather Forecasts 40 year reanalysis (ERA‐40) soil moisture and temperature [ Uppala et al , 2005]. Also, regions of strong soil moisture– T mean coupling identified by this study (and also ZWL2008) appear to be consistent in many areas with those by the GLACE‐1 study, although detailed structures have some disagreement.…”

Section: The Role Of Interactive Soil Moisture For Summer Temperaturesupporting

confidence: 52%

Land-atmosphere coupling and summer climate variability over East Asia

Zhang¹,

Wu²,

Dong³

2011

J. Geophys. Res.

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108

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[1] Two long-term simulations with the weather research and forecasting model are conducted to assess the contribution of land-atmosphere coupling to interannual variability of summer climate over East Asia. The control experiment (CTL) uses a fully coupled land surface model, while an additional experiment replaces soil moisture evolution at each time step with the climatology of CTL and thus removes the interannual variability of soil moisture. CTL is able to reproduce relatively well climatic means and interannual variability of summer climate over East Asia though some biases exist. It is found that land-atmosphere coupling plays a critical role in influencing summer climate variability, in particular over the climatic and ecological transition zones. Interactive soil moisture strongly amplifies daily mean temperature variability over the southern Siberia-northern Mongolia region, the region from northeast China to central China, and the eastern part of South Asia, accounting for half or more of the total variance. Soil moisture is found to exert substantially stronger impacts on daily maximum temperature variability than on daily mean temperature variability but generally has small effects on daily minimum temperature except for the eastern Tibetan Plateau and some other areas. Soil moisture makes a dominant contribution to precipitation variability over the climatic and ecological transition zones of the southern Siberia-northern Mongolia region and northern China and many areas of western China. While soil moisture-temperature coupling is largely determined by the ability of soil moisture to affect surface fluxes, soil moistureprecipitation coupling also depends on other physical processes, particularly moisture convection.

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Section: The Role Of Interactive Soil Moisture For Summer Temperaturesupporting

confidence: 52%

Land-atmosphere coupling and summer climate variability over East Asia

Zhang¹,

Wu²,

Dong³

2011

J. Geophys. Res.

Self Cite

108

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“…The effects of soil moisture on climate variability have been indicated in previous studies [ Shukla and Mintz , ; Yeh et al ., ; Yang and Lau , ; Douville , ; Koster et al ., ; Seneviratne et al ., ; Kim and Hong , ; Zhang and Zuo , ]. Zhang and Dong [] pointed out that the soil moisture has a negative feedback on temperature in the transition zones between dry and wet climates, such as Northern China. Zhang et al .…”

Section: Introductionmentioning

confidence: 99%

Change in the contribution of spring snow cover and remote oceans to summer air temperature anomaly over Northeast China around 1990

Zhao

Liu

2014

JGR Atmospheres

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Sea surface temperature (SST), snow cover, and soil moisture anomalies are factors for climate variability over land regions. The present study found that the relationship between in situ spring snow cover and Northeast China summer surface temperature variations is not steady. It is significant during mid-1970s through late 1980s but weak during the 1990s and 2000s. This interdecadal change in the spring snow cover-summer temperature relationship is found to relate to the effects of SST anomalies in the tropical Indian Ocean and western Pacific regions during the recent decades. These SST anomalies induce a meridional circulation pattern along the East Asian coast. The remote SST forcing-induced circulation and precipitation anomalies overcome local snow cover-induced soil moisture anomalies and thus disrupt the spring snow cover-summer temperature connection during the recent decades. The present study indicated that both the North Atlantic SST anomaly pattern and local spring snow cover anomalies contribute to Northeast China summer temperature variations during mid-1970s through late 1980s. During the 1990s and 2000s, the influence of the North Atlantic SST anomalies is weakened, and the SST anomaly in the tropical Indo-western Pacific region is a major player in Northeast China summer temperature variations.

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“…Soil moisture, as a critical component of the land surface, has been recognized to play an important role in influencing surface climate [20][21][22]. In particular, recent studies highlighted the critical role of soil moisture for daily mean and maximum temperatures over China [23,24]. However, how land-atmosphere coupling affects hot extremes over China is not yet well understood.…”

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confidence: 99%

“…Zhang et al [24,31] demonstrated that the Weather Research and Forecasting (WRF) model can simulate well local and regional land-atmosphere coupling compared with statistical analysis to observations and observationally based analysis data [23,32,33]. The objective of this study is to evaluate the role of land-atmosphere coupling for hot extremes over China by analyzing two long-term WRF model simulations with and without interactive soil moisture.…”

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confidence: 99%

Land-atmosphere coupling amplifies hot extremes over China

Zhang

2011

Chin. Sci. Bull.

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Climate extremes, such as extreme hot temperatures and heat waves, can have dramatic societal, economic, and ecological consequences. China has experienced remarkable interannual and decadal changes in hot extremes during the last several decades. However, the underlying mechanisms responsible for changes in the hot extremes over China have not been clearly identified. In this study, we investigate the role of land-atmosphere coupling for hot days and heat waves during summer over China using two long-term Weather Research and Forecasting model simulations with and without interactive soil moisture. Results indicate that land-atmosphere coupling mainly amplifies hot extremes over China. In particular, significant amplifying effects appear over most of eastern and southwestern China. Over these areas, land-atmosphere coupling generally accounts for 30%-70% of the numbers of hot days and heat waves. This study highlights the critical importance of land-atmosphere interactions for the occurrence of hot extremes over China. land-atmosphere coupling, hot extremes, regional climate modeling Citation:Zhang J Y, Wu L Y. Land-atmosphere coupling amplifies hot extremes over China.

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Soil moisture influence on summertime surface air temperature over East Asia

Cited by 31 publications

References 34 publications

Land-atmosphere coupling and summer climate variability over East Asia

Land-atmosphere coupling and summer climate variability over East Asia

Change in the contribution of spring snow cover and remote oceans to summer air temperature anomaly over Northeast China around 1990

Land-atmosphere coupling amplifies hot extremes over China

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