NEW ASCAT VEGETATION OPTICAL DEPTH (IB-VOD) RETRIEVALS OVER AFRICA

被引：0
|
作者：
Liu, Xiangzhuo [1 ]
Wigneron, J-P [1 ]
Frappart, Frederic [2 ,3 ]
Baghdadi, Nicolas [4 ]
Zribi, Mehrez [5 ]
Jagdhuber, Thomas [6 ]
Li, Xiaojun [1 ]
Wang, Mengjia [1 ,7 ]
Fan, Lei [8 ]
Moisy, Christophe [1 ]
机构：
[1] INRAE, UMR1391 ISPA, Villenave Dornon, France
[2] Lab Etud Geophys & Oceanog Spatiales LEGOS, F-31400 Toulouse, France
[3] Geosci Environm Toulouse GET, F-31400 Toulouse, France
[4] Univ Montpellier, TETIS, IRSTEA, 500 Rue Francois Breton, F-34093 Montpellier 5, France
[5] Univ Toulouse, CESBIO, CNRS UPS IRD CNES, 18 Av Edouard Belin,Bpi 2801, F-31401 Toulouse 9, France
[6] DLR Microwaves & Radar Inst, German Aerosp Ctr DLR, D-82234 Oberpfaffenhofen, Wessling, Germany
[7] Beijing Normal Univ, Fac Geog Sci, State Key Lab Remote Sensing Sci, Beijing 100875, Peoples R China
[8] Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing, Peoples R China
来源：
IGARSS 2020 - 2020 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM | 2020年
关键词：
ASCAT; VOD; Water Cloud Model;
D O I：
10.1109/IGARSS39084.2020.9324232
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
Vegetation Optical Depth (VOD) plays an important role in monitoring the earth ecosystems. There are many VOD products released based on different satellites and frequencies. But most of the VOD products are derived from passive microwave data, and very few active VOD products have been released to date. This study investigated retrievals of the active microwave VOD product from C-band ASCAT (Advanced SCATterometer) observations using the water cloud model in large areas. To achieve this, the ASCAT backscatter data and ECMWF soil moisture data were used as inputs to retrieve ASCAT VOD over the whole Africa. The correlation between the retrieved VOD product and proxies of vegetation density (Saatchi biomass) were used to evaluate the model performance.
引用
收藏
页码：5011 / 5013
页数：3
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