Globally Increasing Atmospheric Aridity Over the 21st Century

نویسندگان

چکیده

Vapor pressure deficit (VPD) is of great importance to control the land-atmosphere exchange water and CO2. Here we use in situ observations assess performance monthly VPD calculated from state-of-the-art data sets including CRU, ERA5, Modern-Era Retrospective analysis for Research Applications, Version 2 (MERRA2). We investigate trends at global scale different climatic zones 1981–2020 future (2021–2100) Coupled Model Inter-comparison Project phase 6 (CMIP6) outputs. The results show that estimated MERRA2 correlated well against estimates 15,531 World Meteorological Organization stations, with R2 ranging between 0.92 0.96. Moreover, robust correlations were also found across stations when analyzing months separately. During 1981–2020, increased all zones, strongest increase arid zone, followed by tropical, temperate, cold polar zones. CMIP6 simulations a continuously increasing trend (0.028 hPa year−1), largest zone (0.063 year−1). magnitudes are following magnitude CO2 increases emission scenarios. highlight atmospheric aridification will continue under warming, which may pose an threat terrestrial ecosystems particularly dryland agricultural systems.

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ژورنال

عنوان ژورنال: Earth’s Future

سال: 2022

ISSN: ['2328-4277']

DOI: https://doi.org/10.1029/2022ef003019