Articles | Volume 23, issue 18
https://doi.org/10.5194/bg-23-6557-2026
https://doi.org/10.5194/bg-23-6557-2026
Research article
 | 
18 Sep 2026
Research article |  | 18 Sep 2026

Evaluating vegetation indices for monitoring drought and post-drought declines in European forest productivity

Julia Kelly, Tim Schacherl, Lars Eklundh, Hongxiao Jin, Anne Klosterhalfen, Alexander Knohl, and Natascha Kljun

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Short summary
It is vital to monitor drought-related reductions in forest productivity over large areas. We tested the ability of 12 satellite variables to capture negative drought impacts on forest productivity across 18 European forest sites. Surface temperature worked best across all forest sites and droughts. After drought, forest productivity recovered faster than some commonly-used satellite variables, meaning use of these variables may underestimate forests’ resilience to drought.
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