Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2018.02.017 |
Evaluation of wintertime precipitation forecasts over the Australian Snowy Mountains | |
Huang, Yi1,2; Chubb, Thomas3; Sarmadi, Fahimeh1; Siems, Steven T.1,2; Manton, Michael J.1; Franklin, Charmaine N.4; Ebert, Elizabeth4 | |
2018-07-15 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2018 |
卷号 | 207页码:42-61 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | This study evaluates the Australian Community Climate and Earth-System Simulator (ACCESS) Numerical Weather Prediction system in forecasting precipitation across the Australian Snowy Mountains for two cool seasons. Metrics based on seasonal accumulated and daily precipitation show that the model is able to reproduce the observed domain-mean accumulated precipitation reasonably well (with a slight overestimation), but this is, in part, due to a compensation of various errors. Both the frequency and intensity of the heavy precipitation days (domain-mean daily precipitation > 5 nun day(-1)) are overrepresented, particularly over the complex terrain and high-elevation areas, whereas the frequency of the very light precipitation days (domain-mean daily precipitation < 1 mm day(-1)) is underestimated, primarily over lower-elevation areas both upwind and downwind of the mountains. Most of the precipitation is forecasted by the grid-scale precipitation scheme, with appreciable snowfalls predicted over the high elevations. The model also demonstrates appreciable skill in reproducing the synoptic regimes. The proportion of the forecast precipitation for each regime is comparable to the observations, although the orographic enhancement over the western slopes of the mountains is more pronounced in the forecasts, particularly for the wetter regimes. An examination on the effect of the lower-atmosphere stability suggests that most of the precipitation (50-70% over the high elevations) is produced under the "unblocked" condition, which is diagnosed 31% of the time. The remainder is produced under the "blocked" condition. Combined with a case study, potential sources of error associated with the forecast precipitation biases are also discussed. |
英文关键词 | Orographic precipitation Quantitative precipitation forecast Australian Snowy Mountains Synoptic regimes Lower-atmosphere stability Cloud thermodynamic phase |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000430901800004 |
WOS关键词 | SUPERCOOLED LIQUID WATER ; HIGH-RESOLUTION SIMULATIONS ; OROGRAPHIC PRECIPITATION ; GAUGE NETWORK ; PART I ; CONVECTION ; SCHEME ; MODEL ; STABILITY ; RAINFALL |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/38414 |
专题 | 地球科学 |
作者单位 | 1.Monash Univ, Sch Earth Atmosphere & Environm, Melbourne, Vic, Australia; 2.Monash Univ, ARC, Ctr Excellence Climate Syst Sci, Melbourne, Vic, Australia; 3.Snowy Hydro Ltd, Sydney, NSW, Australia; 4.Australian Bur Meteorol, Melbourne, Vic, Australia |
推荐引用方式 GB/T 7714 | Huang, Yi,Chubb, Thomas,Sarmadi, Fahimeh,et al. Evaluation of wintertime precipitation forecasts over the Australian Snowy Mountains[J]. ATMOSPHERIC RESEARCH,2018,207:42-61. |
APA | Huang, Yi.,Chubb, Thomas.,Sarmadi, Fahimeh.,Siems, Steven T..,Manton, Michael J..,...&Ebert, Elizabeth.(2018).Evaluation of wintertime precipitation forecasts over the Australian Snowy Mountains.ATMOSPHERIC RESEARCH,207,42-61. |
MLA | Huang, Yi,et al."Evaluation of wintertime precipitation forecasts over the Australian Snowy Mountains".ATMOSPHERIC RESEARCH 207(2018):42-61. |
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