New ascat vegetation optical depth (IB-VOD) retrievals over Africa
Language
en
Communication dans un congrès
This item was published in
IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, 2020-09-26, Waikoloa, Hawaii. 2021p. 5011-5013
IEEE
English Abstract
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 ...Read more >
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.Read less <
English Keywords
ASCAT
VOD
Water Cloud Model
Origin
Hal imported