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| DOI | 10.1029/2019GL086545 |
| Island Rainfall Enhancement in the Maritime Continent | |
| Ruppert J.H.; Jr.; Chen X. | |
| 发表日期 | 2020 |
| ISSN | 0094-8276 |
| 起始页码 | no |
| 卷号 | 47期号:5 |
| 英文摘要 | The hypothesis that the islands of the Maritime Continent (MC) enhance total rainfall and time-mean upward motion is tested using a convection-permitting regional model. Sensitivity experiments with the islands removed greatly diminish both rainfall and upward motion, supporting the hypothesis. We examine the individual factors in this enhancement, isolating the impacts of the diurnal cycle from those of basic-state (i.e., constant) forcing of orography and the land surface. We find that the basic-state forcing by land is the only factor that substantially enhances total island rainfall, specifically through the enhancement of mean surface heat fluxes. The diurnal cycle and orographic forcing, however, substantially enhance rainfall in the seas surrounding the islands. Moreover, the diurnal cycle is found to be essential for promoting mesoscale circulations on the spatial scales of the islands, which are critical to both the upscale growth of deep convection and the most extreme rainfall rates. ©2020. American Geophysical Union. All Rights Reserved. |
| 英文关键词 | Heat flux; Rain; diurnal rectification; Land-atmosphere couplings; Maritime Continent; Mesoscale circulation; Tropical convection; Landforms; atmospheric convection; diurnal variation; extreme event; heat flux; land surface; land-atmosphere interaction; maritime transportation; mesoscale motion; orography |
| 语种 | 英语 |
| 来源期刊 | Geophysical Research Letters
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/170613 |
| 作者单位 | Department of Meteorology and Atmospheric Science, and Center for Advanced Data Assimilation and Predictability Techniques, The Pennsylvania State UniversityPA, United States |
| 推荐引用方式 GB/T 7714 | Ruppert J.H.,Jr.,Chen X.. Island Rainfall Enhancement in the Maritime Continent[J],2020,47(5). |
| APA | Ruppert J.H.,Jr.,&Chen X..(2020).Island Rainfall Enhancement in the Maritime Continent.Geophysical Research Letters,47(5). |
| MLA | Ruppert J.H.,et al."Island Rainfall Enhancement in the Maritime Continent".Geophysical Research Letters 47.5(2020). |
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