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DOI | 10.1029/2018JD028463 |
Heterogeneity in Warm-Season Land-Atmosphere Coupling Over the US Southern Great Plains | |
Tang, Qi1; Xie, Shaocheng1; Zhang, Yunyan1; Phillips, Thomas J.1; Santanello, Joseph A.2; Cook, David R.3; Riihimaki, Laura D.4; Gaustad, Krista L.4 | |
2018-08-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:15页码:7867-7882 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Heterogeneity in warm-season (May-August) land-atmosphere (LA) coupling is quantified with the long-time, multiple-station measurements from the U.S. Department of Energy Atmospheric Radiation Measurement (ARM) program and the Moderate Resolution Imaging Spectroradiometer satellite remote sensing at the Southern Great Plains (SGP). We examine the coupling strength at seven additional locations with the same surface type (i.e., pasture/grassland) as the ARM SGP central facility (CF). To simultaneously consider multiple factors and consistently quantify their relative contributions, we apply a multiple linear regression method to correlate the surface evaporative fraction (EF) with near-surface soil moisture (SM) and leaf area index (LAI). The observations show moderate to weak terrestrial segment LA coupling with large heterogeneity across the ARM SGP domain in warm season. Large spatial variabilities in the contributions from SM and LAI to the EF changes are also found. The coupling heterogeneities appear to be associated with differences in land use, anthropogenic activities, rooting depth, and soil type at different stations. Therefore, the complex LA interactions at the SGP cannot be well represented by those at the CF/E13 based on the metrics applied here. Overall, the LAI exerts more influence on the EF than does the SM due to its overwhelming impacts on the latent heat flux. This study complements previous studies based on measurements only from the CF and has important implications for modeling LA coupling in weather and climate models. The multiple linear regression provides a more comprehensive measure of the integrated impacts on LA coupling from several different factors. Key Points |
英文关键词 | land-atmosphere coupling multiple linear regression evaporative fraction soil moisture leaf area index Southern Great Plains |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000443566900005 |
WOS关键词 | BOUNDARY-LAYER INTERACTIONS ; SOIL-MOISTURE ; UNITED-STATES ; PART II ; SURFACE ; CLIMATE ; MODELS ; PRECIPITATION ; EVAPORATION ; FEEDBACKS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/33761 |
专题 | 气候变化 |
作者单位 | 1.Lawrence Livermore Natl Lab, Livermore, CA 94550 USA; 2.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA; 3.Argonne Natl Lab, Lemont, IL USA; 4.Pacific Northwest Natl Lab, Richland, WA USA |
推荐引用方式 GB/T 7714 | Tang, Qi,Xie, Shaocheng,Zhang, Yunyan,et al. Heterogeneity in Warm-Season Land-Atmosphere Coupling Over the US Southern Great Plains[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(15):7867-7882. |
APA | Tang, Qi.,Xie, Shaocheng.,Zhang, Yunyan.,Phillips, Thomas J..,Santanello, Joseph A..,...&Gaustad, Krista L..(2018).Heterogeneity in Warm-Season Land-Atmosphere Coupling Over the US Southern Great Plains.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(15),7867-7882. |
MLA | Tang, Qi,et al."Heterogeneity in Warm-Season Land-Atmosphere Coupling Over the US Southern Great Plains".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.15(2018):7867-7882. |
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