The CMIP6-downscaled CORDEX-Southeast Asia (SEA) ensemble: evaluation and benchmarking for megacities of SEA

Nguyen, Phuong Loan; Alexander, Lisa V.; Ngo-Duc, Thanh; Cruz, Faye; Santisirisomboon, Jerasorn; Juneng, Liew; Permana, Donaldi S.; Chung, Jing Xiang; Dado, Julie Mae; McGregor, John L.; Redmond, Grace; Po, Tse Wai; Tangang, Fredolin; Phan-Van, Tan; Truong, Son C. H.; Thatcher, Marcus; Trinh-Tuan, Long; Ma'rufah, Ummu; Tibay, Jennifer; Di Virgilio, Giovanni; White, Stephen

doi:10.5194/gmd-19-7653-2026

Articles | Volume 19, issue 16

https://doi.org/10.5194/gmd-19-7653-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-19-7653-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 16

Model evaluation paper

|

19 Aug 2026

Model evaluation paper |

| 19 Aug 2026

The CMIP6-downscaled CORDEX-Southeast Asia (SEA) ensemble: evaluation and benchmarking for megacities of SEA

Phuong Loan Nguyen, Lisa V. Alexander, Thanh Ngo-Duc, Faye Cruz, Jerasorn Santisirisomboon, Liew Juneng, Donaldi S. Permana, Jing Xiang Chung, Julie Mae Dado, John L. McGregor, Grace Redmond, Tse Wai Po, Fredolin Tangang, Tan Phan-Van, Son C. H. Truong, Marcus Thatcher, Long Trinh-Tuan, Ummu Ma'rufah, Jennifer Tibay, Giovanni Di Virgilio, and Stephen White

Supplement

https://doi.org/10.5194/gmd-19-7653-2026-supplement

Data sets

CMIP6-downscaled CORDEX-Southeast Asia (SEA) simulations used in "The CMIP6-downscaled CORDEX-Southeast Asia (SEA) ensemble: evaluation and benchmarking for megacities of SEA" Phuong Loan Nguyen et al. https://doi.org/10.5281/zenodo.19334179

Reference datasets used in "The CMIP6-downscaled CORDEX-Southeast Asia (SEA) ensemble: evaluation and benchmarking for megacities of SEA" Phuong Loan Nguyen https://doi.org/10.5281/zenodo.19334323

Model code and software

Model code for of the Conformal Cubic Atmospheric Model, version CCAM-2307 used in "The CMIP6-downscaled CORDEX-Southeast Asia (SEA) ensemble: evaluation and benchmarking for megacities of SEA" Phuong Loan Nguyen et al. https://doi.org/10.5281/zenodo.19303856

ictp-esp/RegCM: Paper Release (Version 4.7.1) F. Giorgi et al. https://doi.org/10.5281/zenodo.4603556

RegCM5 model for the CORDEX experiment The Abdus Salam International Centre for Theoretical Physics (ICTP) and G. Giuliani https://doi.org/10.5281/zenodo.17348623

Short summary

We present an ensemble of Coupled Model Intercomparison Project Phase 6 (CMIP6)-downscaled regional climate model simulations for Southeast Asia (1960–2100). We (1) evaluate model performance against multiple observational datasets and (2) apply a standardized benchmarking framework to identify high-performing models for further kilometer-scale dynamical downscaling over Southeast Asian megacities. This effort supports the development and use of reliable regional climate projections.