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DOI | 10.1002/2017JD027995 |
Winter Precipitation Efficiency of Mountain Ranges in the Colorado Rockies Under Climate Change | |
Eidhammer, Trude; Grubisic, Vanda; Rasmussen, Roy; Ikdea, Kyoko | |
2018-03-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:5页码:2573-2590 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Orographic precipitation depends on the environmental conditions and the barrier shape. In this study we examine the sensitivity of the precipitation efficiency (i.e., drying ratio (DR)), defined as the ratio of precipitation to incoming water flux, to mountain shape, temperature, stability, and horizontal velocity of the incoming air mass. Furthermore, we explore how the DR of Colorado mountain ranges might change under warmer and moister conditions in the future. For given environmental conditions, we find the DR to be primarily dependent on the upwind slope for mountain ranges wider than about 70km and on both the slope and width for narrower ranges. Temperature is found to exert an influence on the DR for all Colorado mountain ranges, with DR decreasing with increasing temperature, under both the current and future climate conditions. The decrease of DR with temperature under warmer climate was found to be stronger for wider mountains than the narrower ones. We attribute this asymmetry to the sensitivity of DR to reduced horizontal velocity under warmer conditions. Specifically, while DR for wider mountains shows no sensitivity to changes in horizontal velocity, the DR for narrow ranges increases as the horizontal velocity decreases and more time is provided for precipitation to form. Thus, for narrower ranges, the horizontal velocity appears to offset the temperature effect slightly. The percentagewise decrease of DR for all examined mountain ranges is about 4%K-1. In comparison, the increase in precipitation is about 6%K-1 while the vapor flux increase is about 9%K-1. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428437100012 |
WOS关键词 | OROGRAPHIC PRECIPITATION ; PART I ; MICROPHYSICS ; MODEL ; IMPLEMENTATION ; SIMULATIONS ; SYSTEM ; CLOUD |
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/32232 |
专题 | 气候变化 |
作者单位 | Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Eidhammer, Trude,Grubisic, Vanda,Rasmussen, Roy,et al. Winter Precipitation Efficiency of Mountain Ranges in the Colorado Rockies Under Climate Change[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(5):2573-2590. |
APA | Eidhammer, Trude,Grubisic, Vanda,Rasmussen, Roy,&Ikdea, Kyoko.(2018).Winter Precipitation Efficiency of Mountain Ranges in the Colorado Rockies Under Climate Change.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(5),2573-2590. |
MLA | Eidhammer, Trude,et al."Winter Precipitation Efficiency of Mountain Ranges in the Colorado Rockies Under Climate Change".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.5(2018):2573-2590. |
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