Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016JD025460 |
The East Asian Atmospheric Water Cycle and Monsoon Circulation in the Met Office Unified Model | |
Rodriguez, Jose M.; Milton, Sean F.; Marzin, Charline | |
2017-10-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:19 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | In this study the low-level monsoon circulation and observed sources of moisture responsible for the maintenance and seasonal evolution of the East Asian monsoon are examined, studying the detailed water budget components. These observational estimates are contrasted with the Met Office Unified Model (MetUM) climate simulation performance in capturing the circulation and water cycle at a variety of model horizontal resolutions and in fully coupled ocean-atmosphere simulations. We study the role of large-scale circulation in determining the hydrological cycle by analyzing key systematic errors in the model simulations. MetUM climate simulations exhibit robust circulation errors, including a weakening of the summer west Pacific Subtropical High, which leads to an underestimation of the southwesterly monsoon flow over the region. Precipitation and implied diabatic heating biases in the South Asian monsoon and Maritime Continent region are shown, via nudging sensitivity experiments, to have an impact on the East Asian monsoon circulation. By inference, the improvement of these tropical biases with increased model horizontal resolution is hypothesized to be a factor in improvements seen over East Asia with increased resolution. Results from the annual cycle of the hydrological budget components in five domains show a good agreement between MetUM simulations and ERA-Interim reanalysis in northern and Tibetan domains. In simulations, the contribution from moisture convergence is larger than in reanalysis, and they display less precipitation recycling over land. The errors are closely linked to monsoon circulation biases. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413675900003 |
WOS关键词 | SUMMER MONSOON ; NORTHERN-HEMISPHERE ; SIMULATIONS ; RAINFALL ; PACIFIC ; CMIP5 ; TELECONNECTION ; CLIMATOLOGY ; VARIABILITY ; SENSITIVITY |
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/33105 |
专题 | 气候变化 |
作者单位 | Met Off, Exeter, Devon, England |
推荐引用方式 GB/T 7714 | Rodriguez, Jose M.,Milton, Sean F.,Marzin, Charline. The East Asian Atmospheric Water Cycle and Monsoon Circulation in the Met Office Unified Model[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(19). |
APA | Rodriguez, Jose M.,Milton, Sean F.,&Marzin, Charline.(2017).The East Asian Atmospheric Water Cycle and Monsoon Circulation in the Met Office Unified Model.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(19). |
MLA | Rodriguez, Jose M.,et al."The East Asian Atmospheric Water Cycle and Monsoon Circulation in the Met Office Unified Model".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.19(2017). |
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