Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR019545 |
Assessing convection permitting resolutions of WRF for the purpose of water resource impact assessment and vulnerability work: A southeast Australian case study | |
Ekstrom, Marie1; Gilleland, Eric2 | |
2017 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; USA |
英文摘要 | Convective permitting simulations are increasingly pursued for providing physically more credible climate projections of rainfall. Their value is likely to be greater for regions where increased resolution not only resolves physical processes better, but also the topographic features of the target domain. Here, we assess the skill of convective permitting simulations to simulate rainfall for water resource assessment work in a climate change context for southeast Australia. Output on 2 and 10 km grid-length resolution from a 5-year regional climate model simulation is assessed for skill in simulating mean seasonal climatologies for days with low or high observed rainfall intensities. Comparison is conducted on spatial grids and for 25 catchments across the study region. No significant difference in skill was found in the loss differential when using absolute error for spatial fields of mean climatologies. Measures focusing on spatial similarity and accuracy in position of high rainfall areas indicate somewhat better skill in the 2 km simulation with regard to positioning (in autumn and winter), and with regard to spatial variability (in autumn and spring). Significant difference in skill was shown when comparing the simulated data sets on a catchment basis; seasonally 5-7 catchments in favor of the 10 km output and somewhat less for the 2 km output (3-6 catchments). When using correlation skill as the test measure, results are overwhelmingly in favor of the 2 km output. We cautiously suggest that results may be overly pessimistic for the 2 km simulation because of inadequate representation of rainfall in high altitude areas in observations. |
英文关键词 | convective permitting simulations Australia downscaling |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000394911200043 |
WOS关键词 | REGIONAL CLIMATE MODELS ; HORIZONTAL RESOLUTION ; RAINFALL EVENTS ; PREDICTION ; WEATHER ; FORECASTS ; PARAMETERIZATION ; PERFORMANCE ; SCHEME ; TIME |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21593 |
专题 | 资源环境科学 |
作者单位 | 1.CSIRO Land & Water, Canberra, ACT, Australia; 2.Natl Ctr Atmospher Res, Res Applicat Lab, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Ekstrom, Marie,Gilleland, Eric. Assessing convection permitting resolutions of WRF for the purpose of water resource impact assessment and vulnerability work: A southeast Australian case study[J]. WATER RESOURCES RESEARCH,2017,53(1). |
APA | Ekstrom, Marie,&Gilleland, Eric.(2017).Assessing convection permitting resolutions of WRF for the purpose of water resource impact assessment and vulnerability work: A southeast Australian case study.WATER RESOURCES RESEARCH,53(1). |
MLA | Ekstrom, Marie,et al."Assessing convection permitting resolutions of WRF for the purpose of water resource impact assessment and vulnerability work: A southeast Australian case study".WATER RESOURCES RESEARCH 53.1(2017). |
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