RETRACTED ARTICLE: A 10 per cent increase in global land evapotranspiration from 2003 to 2019

Madeleine Pascolini-Campbell (), John T. Reager, Hrishikesh A. Chandanpurkar and Matthew Rodell
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Madeleine Pascolini-Campbell: California Institute of Technology
John T. Reager: California Institute of Technology
Hrishikesh A. Chandanpurkar: California Institute of Technology
Matthew Rodell: NASA Goddard Space Flight Center

Nature, 2021, vol. 593, issue 7860, 543-547

Abstract: Abstract Accurate quantification of global land evapotranspiration is necessary for understanding variability in the global water cycle, which is expected to intensify under climate change1–3. Current global evapotranspiration products are derived from a variety of sources, including models4,5, remote sensing6,7 and in situ observations8–10. However, existing approaches contain extensive uncertainties; for example, relating to model structure or the upscaling of observations to a global level11. As a result, variability and trends in global evapotranspiration remain unclear12. Here we show that global land evapotranspiration increased by 10 ± 2 per cent between 2003 and 2019, and that land precipitation is increasingly partitioned into evapotranspiration rather than runoff. Our results are based on an independent water-balance ensemble time series of global land evapotranspiration and the corresponding uncertainty distribution, using data from the Gravity Recovery and Climate Experiment (GRACE) and GRACE-Follow On (GRACE-FO) satellites13. Variability in global land evapotranspiration is positively correlated with El Niño–Southern Oscillation. The main driver of the trend, however, is increasing land temperature. Our findings provide an observational constraint on global land evapotranspiration, and are consistent with the hypothesis that global evapotranspiration should increase in a warming climate.

Date: 2021
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DOI: 10.1038/s41586-021-03503-5

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