DOI: 10.1002/2015MS000559
Scopus记录号: 2-s2.0-84977950754
论文题名: An evaluation of the variable-resolution CESM for modeling California's climate
作者: Huang X ; , Rhoades A ; M ; , Ullrich P ; A ; , Zarzycki C ; M
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2016
卷: 8, 期: 1 起始页码: 345
结束页码: 369
语种: 英语
英文关键词: Atmospheric temperature
; Climatology
; Earth (planet)
; Electric power system interconnection
; Oceanography
; Surface properties
; Surface waters
; Weather forecasting
; Computational expense
; Horizontal resolution
; Near surface temperature
; Regional climate modeling
; Regional climate modeling (RCM)
; Sea surface temperature (SST)
; Weather research and forecasting models
; Winter precipitation
; Climate models
; climate modeling
; climatology
; data set
; global climate
; numerical model
; precipitation (climatology)
; regional climate
; resolution
; sea surface temperature
; statistical analysis
; surface temperature
; weather forecasting
; California
; United States
英文摘要: In this paper, the recently developed variable-resolution option within the Community Earth System Model (VR-CESM) is assessed for long-term regional climate modeling of California at 0.25°(28 km) and 0.125°(14 km) horizontal resolutions. The mean climatology of near-surface temperature and precipitation is analyzed and contrasted with reanalysis, gridded observational data sets, and a traditional regional climate model (RCM) - the Weather Research and Forecasting (WRF) model. Statistical metrics for model evaluation and tests for differential significance have been extensively applied. With only prescribed sea surface temperatures, VR-CESM tended to produce a warmer summer (by about 1-3°C) and overestimated overall winter precipitation (about 25%-35%) compared to reference data sets. Increasing resolution from 0.25°to 0.125°did not produce a statistically significant improvement in the model results. By comparison, the analogous WRF climatology (constrained laterally and at the sea surface by ERA-Interim reanalysis) was 1-3°C colder than the reference data sets, underestimated precipitation by 20%-30% at 27 km resolution, and overestimated precipitation by 65-85% at 9 km. Overall, VR-CESM produced comparable statistical biases to WRF in key climatological quantities. This assessment highlights the value of variable-resolution global climate models (VRGCMs) in capturing fine-scale atmospheric processes, projecting future regional climate, and addressing the computational expense of uniform-resolution global climate models. © 2016. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75920
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
There are no files associated with this item.
作者单位: Department of Land, Air and Water Resources, University of California, Davis, CA, United States; National Center for Atmospheric Research, Boulder, CO, United States
Recommended Citation:
Huang X,, Rhoades A,M,et al. An evaluation of the variable-resolution CESM for modeling California's climate[J]. Journal of Advances in Modeling Earth Systems,2016-01-01,8(1)