Articles | Volume 17, issue 1
Model description paper
12 Jan 2024
Model description paper |  | 12 Jan 2024

GLOBGM v1.0: a parallel implementation of a 30 arcsec PCR-GLOBWB-MODFLOW global-scale groundwater model

Jarno Verkaik, Edwin H. Sutanudjaja, Gualbert H. P. Oude Essink, Hai Xiang Lin, and Marc F. P. Bierkens

Data sets

Data supplement to the GLOBGM v1.0 Jarno Verkaik and Edwin H. Sutanudjaja

Model code and software

Model input files and tools for the GLOBGM Jarno Verkaik and Edwin H. Sutanudjaja

Parallel MODFLOW 6.2.1 prototype release 0.1 Jarno Verkaik et al.

Short summary
This paper presents the parallel PCR-GLOBWB global-scale groundwater model at 30 arcsec resolution (~1 km at the Equator). Named GLOBGM v1.0, this model is a follow-up of the 5 arcmin (~10 km) model, aiming for a higher-resolution simulation of worldwide fresh groundwater reserves under climate change and excessive pumping. For a long transient simulation using a parallel prototype of MODFLOW 6, we show that our implementation is efficient for a relatively low number of processor cores.