Knowledge Resource Center for Ecological Environment in Arid Area
Satellite-only latent heat flux estimation | |
Mallick, Kaniska; Jarvis, Andrew | |
通讯作者 | Mallick, Kaniska |
会议名称 | Remote Sensing and Hydrology Symposium |
会议日期 | SEP 27-30, 2010 |
会议地点 | Jackson Hole, WY |
英文摘要 | Here we present a new method for recovering global latent heat flux (lambda E) using satellite sounding in conjunction with visible and infra-red geophysical products, from the AIRS (Atmospheric Infrared Sounder) and MODIS (Moderate Resolution Imaging Spectroradiometer) platforms at 1 degrees x 1 degrees spatial domain. This method focuses on specifying the day-night net radiation, which is then used in a dynamic surface energy balance framework with day night land surface temperature to directly retrieve net available energy. The evaporative fraction was estimated from the water vapour and temperature profile information in a Bowen ratio framework. Evaluation of available energy and latent heat flux against 30 terrestrial flux tower sites revealed a pooled root mean square deviation (RMSD) of 98, 72 and 79 Wm(-2) for net radiation, net available energy, and latent heat flux. between satellite and tower, respectively. The results show particular promise of this approach for latent heat flux retrieval under warm, moist conditions, but weaknesses under arid or semi-arid conditions subject to high radiative loads. |
英文关键词 | Bowen ratio latent heat flux satellite sounder AIRS FLUXNET tower eddy covariance |
来源出版物 | REMOTE SENSING AND HYDROLOGY |
ISSN | 0144-7815 |
出版年 | 2012 |
卷号 | 352 |
页码 | 115-119 |
ISBN | 978-1-907161-27-8 |
出版者 | INT ASSOC HYDROLOGICAL SCIENCES |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | England |
收录类别 | CPCI-S |
WOS记录号 | WOS:000313596500027 |
WOS关键词 | ENERGY-BALANCE |
WOS类目 | Remote Sensing ; Water Resources |
WOS研究方向 | Remote Sensing ; Water Resources |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/301235 |
作者单位 | Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England |
推荐引用方式 GB/T 7714 | Mallick, Kaniska,Jarvis, Andrew. Satellite-only latent heat flux estimation[C]:INT ASSOC HYDROLOGICAL SCIENCES,2012:115-119. |
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