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. 2022 Mar 29;13:1653. doi: 10.1038/s41467-022-29009-w

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© The Author(s) 2022

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — a Differences between ΔLUE(SM|VPD) and ΔLUE(VPD|SM) at 40 eddy covariance sites. b Differences between ΔLUE(SM|VPD) and ΔLUE(VPD|SM) based on FLUXCOM dataset. The positive values indicate larger impacts of VPD relative to SM in a, b. Note, where ΔLUE(SM|VPD)>0, the difference equals to ΔLUE(VPD|SM) in a, b; where ΔLUE(VPD|SM)>0, the difference is ΔLUE(SM|VPD); and where both are positive, the difference is not shown. For better comparability in space, the LUE data time series was normalized by the average LUE exceeding 90th percentile. The units refer to the fractions relative to average LUE exceeding the 90th percentile for each eddy covariance site and each grid cell.