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HESS | Articles | Volume 24, issue 6
Hydrol. Earth Syst. Sci., 24, 2921–2930, 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Hydrol. Earth Syst. Sci., 24, 2921–2930, 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 03 Jun 2020

Research article | 03 Jun 2020

Comparing Palmer Drought Severity Index drought assessments using the traditional offline approach with direct climate model outputs

Yuting Yang et al.

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Cited articles

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Alkama, R., Marchand, L., Ribes, A., and Decharme, B.: Detection of global runoff changes: results from observations and CMIP5 experiments, Hydrol. Earth Syst. Sci., 17, 2967–2979,, 2013. 
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Publications Copernicus
Short summary
Many previous studies using offline drought indices report that future warming will increase worldwide drought. However, this contradicts observations/projections of vegetation greening and increased runoff. We resolved this paradox by re-calculating the same drought indices using direct climate model outputs and find no increase in future drought as the climate warms. We also find that accounting for the impact of CO2 on plant transpiration avoids the previous overestimation of drought.
Many previous studies using offline drought indices report that future warming will increase...