DOI: 10.1002/2015MS000440
Scopus记录号: 2-s2.0-84944887502
论文题名: WRF-simulated sensitivity to land surface schemes in short and medium ranges for a high-temperature event in East China: A comparative study
作者: Zeng X ; -M ; , Wang N ; , Wang Y ; , Zheng Y ; , Zhou Z ; , Wang G ; , Chen C ; , Liu H
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2015
卷: 7, 期: 3 起始页码: 1305
结束页码: 1325
语种: 英语
英文关键词: Atmospheric temperature
; Errors
; Feedback
; Heat flux
; Moisture
; Soil moisture
; Surface measurement
; Land surface scheme
; Leadtime
; Medium range
; short-range
; Weather simulation
; Weather forecasting
; air temperature
; atmospheric circulation
; computer simulation
; error analysis
; extreme event
; heat flux
; high temperature
; land surface
; software
; soil moisture
; surface wind
; China
英文摘要: We designed simulations for the high-temperature event that occurred on 23 July 2003 in East China using a series of forecast lead times, from short-range to medium-range, and four land surface schemes (LSSs) (i.e., SLAB, NOAH, RUC, and PX) in the Weather Research and Forecasting Model (WRF), Version 3. The sensitivities of short and medium-range simulations to the LSSs systematically varied with the lead times. In general, the model reproduced short-range, high-temperature distributions. The simulated weather was sensitive to the LSSs, and the LSS-induced sensitivity was higher in the medium range than in the short-range. Furthermore, the LSS performances were complex, i.e., the PX errors apparently increased in the medium range (longer than 6 days), RUC produced the maximum errors, and SLAB and NOAH had approximately equivalent errors that slightly increased. Additional sensitivity simulations revealed that the WRF modeling system assigns relatively low initial soil moisture for RUC and that soil moisture initialization plays an important role that is comparable to the LSS choice in the simulations. LSS-induced negative feedback between surface air temperature (SAT) and atmospheric circulation in the lower atmosphere was found in the medium range. These sensitivities were mainly caused by the LSS-induced differences in surface sensible heat flux and by errors associated with the lead times. Using the SAT equation, further diagnostic analyses revealed LSS deficiencies in simulating surface fluxes and physical processes that modify the SAT and indicated the main reasons for these deficiencies. These results have implications for model improvement and application. © 2015. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75993
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: College of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing, Jiangsu, China; Key Laboratory for Mesoscale Severe Weather of Ministry of Education, Nanjing University, Nanjing, Jiangsu, China
Recommended Citation:
Zeng X,-M,, Wang N,et al. WRF-simulated sensitivity to land surface schemes in short and medium ranges for a high-temperature event in East China: A comparative study[J]. Journal of Advances in Modeling Earth Systems,2015-01-01,7(3)