DOI: 10.1007/s00382-012-1315-2
Scopus记录号: 2-s2.0-84868140897
论文题名: WRF high resolution dynamical downscaling of ERA-Interim for Portugal
作者: Soares P.M.M. ; Cardoso R.M. ; Miranda P.M.A. ; de Medeiros J. ; Belo-Pereira M. ; Espirito-Santo F.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 39, 期: 2017-09-10 起始页码: 2497
结束页码: 2522
语种: 英语
英文关键词: Climatology
; ERA-Interim
; High resolution
; Portugal
; Regional climate modeling
; WRF model
英文摘要: This study proposes a dynamically downscaled climatology of Portugal, produced by a high resolution (9 km) WRF simulation, forced by 20 years of ERA-Interim reanalysis (1989-2008), nested in an intermediate domain with 27 km of resolution. The Portuguese mainland is characterized by large precipitation gradients, with observed mean annual precipitation ranging from about 400 to over 2,200 mm, with a very wet northwest and rather dry southeast, largely explained by orographic processes. Model results are compared with all available stations with continuous records, comprising daily information in 32 stations for temperature and 308 for precipitation, through the computation of mean climatologies, standard statistical errors on daily to seasonally timescales, and distributions of extreme events. Results show that WRF at 9 km outperforms ERA-Interim in all analyzed variables, with good results in the representation of the annual cycles in each region. The biases of minimum and maximum temperature are reduced, with improvement of the description of temperature variability at the extreme range of its distribution. The largest gain of the high resolution simulations is visible in the rainiest regions of Portugal, where orographic enhancement is crucial. These improvements are striking in the high ranking percentiles in all seasons, describing extreme precipitation events. WRF results at 9 km compare favorably with published results supporting its use as a high-resolution regional climate model. This higher resolution allows a better representation of extreme events that are of major importance to develop mitigation/adaptation strategies by policy makers and downstream users of regional climate models in applications such as flash floods or heat waves. © 2012 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55093
Appears in Collections: 过去全球变化的重建
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作者单位: Instituto Dom Luiz, University of Lisbon, Lisbon, Portugal; Instituto de Meteorologia, Lisbon, Portugal; Faculdade de Ciências da Universidade de Lisboa, Campo Grande, Ed. C8 (3.26), 1749-016 Lisbon, Portugal
Recommended Citation:
Soares P.M.M.,Cardoso R.M.,Miranda P.M.A.,et al. WRF high resolution dynamical downscaling of ERA-Interim for Portugal[J]. Climate Dynamics,2012-01-01,39(2017-09-10)