PDSI_CMIP6: an ensemble CMIP6-projected self-calibrated Palmer drought severity index dataset.

ABSTRACT: Drought, characterized by below-average water supply, profoundly affects regional water resources and various ecosystem services. The Palmer Drought Severity Index (PDSI) is a widely used metric for drought monitoring and climate change assessments but suffers from inherent climatic inconsistencies and lacks comprehensive and reliable estimates under changing climate conditions. Here we develop a monthly multi-model and multi-scenario dataset of self-calibrated PDSI for the period 1850-2094, derived from 11 climate model outputs within the Coupled Model Intercomparison Project 6 (PDSI_CMIP6). The traditional two-layer bucket model in PDSI is replaced with direct hydrological outputs from CMIP6 models, ensuring alignment with CMIP6 projections. The PDSI estimates are validated against soil

SUBMITTER: Xiong J 

PROVIDER: S-EPMC12357914 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature