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- Title
SINGV-RCM: the convection-permitting regional climate model for Singapore.
- Authors
Prasanna, Venkatraman; Dipankar, Anurag; Liu, Jianyu; Lim, Gerald; Moise, Aurel; Chua, Xin Rong; Sanchez, Claudio; Chen, Chen; Yu, Jianjun; Raavi, Harika Pavan; Luo, Fei; Hassim, Muhammad Eeqmal; Sahany, Sandeep; Webster, Stuart
- Abstract
The development of the Singapore regional climate model (SINGV-RCM) is documented in this study. The model's skill in predicting mean and extreme rainfall over the Maritime Continent at 8 km and 2 km grid resolution is assessed using observed rainfall. The model's sensitivity to vertical grid and convection parametrization is also evaluated. Results demonstrate the added value of downscaling to 8 and 2 km. The spatial and temporal characteristic of the diurnal rainfall is shown to be in good agreement with the observation. The model also demonstrates skill in capturing extreme rainfall. In general, the rainfall in the 8 km and 2 km simulations are quite similar, when regrided to a coarser resolution. Even then, the convection-permitting simulation at 2 km is found to add value over the 8 km simulation, particularly in capturing the higher rainfall thresholds. Mean biases over the ocean is found to be larger than that over the land, which suggests the need to further tune SINGV-RCM for long climate simulations.
- Subjects
DOWNSCALING (Climatology); ATMOSPHERIC models; REGIONAL development; OCEAN; CONTINENTS
- Publication
Climate Dynamics, 2024, Vol 62, Issue 6, p5129
- ISSN
0930-7575
- Publication type
Article
- DOI
10.1007/s00382-024-07154-w