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Downscaling hydroclimatic changes over the Western US based on CAM subgrid scheme and WRF regional climate simulations by Yun Qian; Steven J. Ghan; L. Ruby Leung is a Environmental Science article available to read on EtoBox.
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## Abstract This study examines two dynamical downscaling methods, a subgrid parameterization and a regional climate model, to compare their impacts on simulating orographic precipitation and surface hydrology in mountain regions. A global climate model was first applied at 1° × 1.25° grid resolution with a subgrid orographic precipitation scheme. The global simulations were then used to drive a regional climate model at 15‐km grid resolution over the Western United States. By comparing the global and regional simulations for two 10‐year periods, 1993–2003 and 2039–2049, this study assesses the two downscaling methods in the context of simulating both the present climate and climate change signals, and the implications of the relatively short simulation length to investigate differences in current and future climate simulated by the models are discussed. The model results show that improving the representation of surface topography through higher spatial resolution or a subgrid method has a large impact on the simulations. Both the subgrid scheme and the regional model significantly improved the simulation of snowpack in the mountains. The spatial distributions of precipitation and
Who reads Downscaling hydroclimatic changes over the Western US based on CAM subgrid scheme and WRF regional climate simulations?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Yun Qian; Steven J. Ghan; L. Ruby Leung
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0899-8418)
- Published
- 2009
- Language
- EN
- Field
- Environmental Science (Physical Sciences)