Observed water and light limitation across global ecosystems

Jonard, François; Feldman, Andrew F.; Short Gianotti, Daniel J.; Entekhabi, Dara

doi:https://doi.org/10.5194/bg-19-5575-2022

Articles | Volume 19, issue 23

https://doi.org/10.5194/bg-19-5575-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Microwave remote sensing for improved understanding of vegetation–water...

https://doi.org/10.5194/bg-19-5575-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 23

Research article

|

09 Dec 2022

Research article |

| 09 Dec 2022

Observed water and light limitation across global ecosystems

François Jonard, Andrew F. Feldman, Daniel J. Short Gianotti, and Dara Entekhabi

Supplement

https://doi.org/10.5194/bg-19-5575-2022-supplement

Data sets

SMAP Enhanced L2 Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture O'Neill et al. https://nsidc.org/data/spl2smp_e/versions/4

Ungridded TROPOMI SIF (at 740 nm) (1.0), CaltechDATA Köhler and Frankenberg https://data.caltech.edu/records/8hm1f-w5492

MOD13C1 MODIS/Terra Vegetation Indices 16-Day L3 Global 0.05 Deg CMG V006 Didan, K. https://doi.org/10.5067/MODIS/MOD13C1.006

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Short summary

We investigate the spatial and temporal patterns of light and water limitation in plant function at the ecosystem scale. Using satellite observations, we characterize the nonlinear relationships between sun-induced chlorophyll fluorescence (SIF) and water and light availability. This study highlights that soil moisture limitations on SIF are found primarily in drier environments, while light limitations are found in intermediately wet regions.