SINGV-RCM: the convection-permitting regional climate model for Singapore
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Date
2024-06
Publication Type
Journal Article
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yes
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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.
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Publication status
published
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Book title
Journal / series
Volume
62 (6)
Pages / Article No.
5129 - 5141
Publisher
Springer
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
SINGV-RCM; Climate downscaling; Km-scale modelling; Parameterized convection and explicit convection
Organisational unit
02240 - Center for Climate Systems Modeling / Center for Climate Systems Modeling