Arid
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
ISSN0144-7815
出版年2012
卷号352
页码115-119
ISBN978-1-907161-27-8
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
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Mallick, Kaniska,Jarvis, Andrew. Satellite-only latent heat flux estimation[C]:INT ASSOC HYDROLOGICAL SCIENCES,2012:115-119.
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