Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2018.08.012 |
Climate change effects on summertime precipitation organization in the Southeast United States | |
Ferreira, Rosana Nieto1; Nissenbaum, Mark R.2; Rickenbach, Thomas M.3 | |
2018-12-01 | |
发表期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2018 |
卷号 | 214页码:348-363 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | As the earth warms, it is unclear how the organization of precipitation will change, or how these changes will impact regional rainfall and the hydrological cycle. This study combines Weather Research and Forecasting (WRF) model simulations and the pseudo global warming downscaling approach with a precipitation feature identification algorithm to help improve our understanding of the effect of warming on precipitation organization. The WRF model was used to simulate precipitation during a six-day summer period in the southeastern United States under present and future warmer climate conditions. The domain averaged precipitation increased by 45% in the future climate simulation compared to current climate. Modeled precipitation features were classified into either mesoscale precipitation features (MPF) larger than 100 km in length or smaller isolated precipitation features (IPF). In terms of organization, future IPF precipitation fraction decreased while MPF precipitation fraction and feature sizes increased, especially over the ocean, indicating a general increase in mesoscale organization in the future warmer climate. Despite higher thermodynamic instability, future climate IPF precipitation was unchanged over land, possibly responding to stronger subsidence under a strengthened western ridge of the North Atlantic Subtropical High. Yet over the ocean IPF precipitation increased and the amplitude of the IPF diurnal cycle doubled. The most notable precipitation intensity increase, as measured by feature height and rainrate distributions, occurred in oceanic MPFs. These increases in oceanic IPF and MPF precipitation may highlight the role of surface water vapor fluxes in realizing increased precipitation in a warmer climate. This study demonstrates that the application of a simple precipitation feature identification algorithm to WRF simulations can give valuable insight into the effect of climate change upon precipitation organization and intensity. Nevertheless longer simulations are still needed to obtain a robust statistics of the changes of precipitation organization under a warming climate. |
英文关键词 | Climate change Precipitation organization Regional climate modeling |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445990400028 |
WOS关键词 | RAINFALL VARIABILITY ; FUTURE CHANGES ; CONVECTION ; TRMM ; INTENSIFICATION ; MODEL ; CYCLE ; TEMPERATURE ; MORPHOLOGY ; INTENSITY |
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/38236 |
专题 | 地球科学 |
作者单位 | 1.East Carolina Univ, Dept Geog Planning & Environm, A-227 Brewster Bldg, Greenville, NC 27858 USA; 2.Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL USA; 3.East Carolina Univ, Dept Geog Planning & Environm, Greenville, NC 27858 USA |
推荐引用方式 GB/T 7714 | Ferreira, Rosana Nieto,Nissenbaum, Mark R.,Rickenbach, Thomas M.. Climate change effects on summertime precipitation organization in the Southeast United States[J]. ATMOSPHERIC RESEARCH,2018,214:348-363. |
APA | Ferreira, Rosana Nieto,Nissenbaum, Mark R.,&Rickenbach, Thomas M..(2018).Climate change effects on summertime precipitation organization in the Southeast United States.ATMOSPHERIC RESEARCH,214,348-363. |
MLA | Ferreira, Rosana Nieto,et al."Climate change effects on summertime precipitation organization in the Southeast United States".ATMOSPHERIC RESEARCH 214(2018):348-363. |
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