Articles | Volume 20, issue 9
https://doi.org/10.5194/bg-20-1789-2023
https://doi.org/10.5194/bg-20-1789-2023
Research article
 | 
16 May 2023
Research article |  | 16 May 2023

Continuous ground monitoring of vegetation optical depth and water content with GPS signals

Vincent Humphrey and Christian Frankenberg

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Latest update: 26 Feb 2024
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Short summary
Microwave satellites can be used to monitor how vegetation biomass changes over time or how droughts affect the world's forests. However, such satellite data are still difficult to validate and interpret because of a lack of comparable field observations. Here, we present a remote sensing technique that uses the Global Navigation Satellite System (GNSS) as a makeshift radar, making it possible to observe canopy transmissivity at any existing environmental research site in a cost-efficient way.
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