The Wet Bias of RegCM4 Over Tibet Plateau in Summer Reduced by Adopting the 3D Sub‐Grid Terrain Solar Radiative Effect Parameterization Scheme

Abstract

The Tibetan Plateau (TP) with elevated complex terrain remarkably influences the regional climate and water cycle (

The Forecast Skill of the Summer Precipitation Over Tibetan Plateau Improved by the Adoption of a 3D Sub‐Grid Terrain Solar Radiative Effect Scheme in a Convection‐Permitting Model

“…As mentioned above, the adoption of 3D STSRE scheme decreases the SSR, which would influence the surface energy and heat exchanges (Gu et al., 2022; X. Zhang et al., 2022). Apart from surface radiation processes, the surface energy balance is also subjected to the sensible heat, latent heat, and the ground soil heat (soil heat energy change between soil and the ground layer), which can be written as NR = SH + LH + GFLX.…”

“…Most numerical models adopt the plane‐parallel radiative transfer schemes, where the topography is supposed flat without considering the influences of sub‐grid orographic factors (i.e., terrain slope, orientation, sky visibility and reflection of nearby terrains) on surface solar radiation (SSR). Thus, the SSR calculated by plane‐parallel radiative schemes mainly varies with latitude and cannot reflect the inhomogeneous distribution of SSR over rugged regions (Gu et al., 2022; Hao et al., 2022; Liou et al., 2013; Müller & Scherer, 2005).…”

“…Beside the deficiencies in STSRE modeling, studies mostly focused on the climatic impacts of STSRE (Gu et al, 2012(Gu et al, , 2020(Gu et al, , 2022Hauge & Hole, 2003;Liou et al, 2013). The STSRE has direct impact on the surface temperature forecast and thus can directly influence the weather, such as the precipitation diurnal variation (Colette et al, 2003;Huang & Qian, 2008;Müller & Scherer, 2005).…”

Improved Performance of CLM5.0 Model in Frozen Soil Simulation Over Tibetan Plateau by Implementing the Vegetation Emissivity and Gravel Hydrothermal Schemes

“…Snow cover is the dominant land cover during the soil freeze–thaw period and largely determines the spatial distribution of frozen soil (Li et al., 2021; J. X. Luo et al., 2021; S. Q. Luo et al., 2020; Xie et al., 2017). Meanwhile, implementing the subgrid terrain solar radiative effect parameterization scheme into land surface model can produce a more realistic surface heat source and sink (Gu et al., 2022; Huang et al., 2022; X. D. Zhang et al., 2022). These issues still deserve attention in the future work.…”

“…Q. Luo et al, 2020;Xie et al, 2017). Meanwhile, implementing the subgrid terrain solar radiative effect parameterization scheme into land surface model can produce a more realistic surface heat source and sink (Gu et al, 2022;Huang et al, 2022;X. D. Zhang et al, 2022).…”