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| DOI | 10.5194/acp-20-7125-2020 |
| Linking large-scale circulation patterns to low-cloud properties | |
| Juliano T.W.; Lebo Z.J. | |
| 发表日期 | 2020 |
| ISSN | 16807316 |
| 起始页码 | 7125 |
| 结束页码 | 7138 |
| 卷号 | 20期号:12 |
| 英文摘要 | The North Pacific High (NPH) is a fundamental meteorological feature present during the boreal warm season. Marine boundary layer (MBL) clouds, which are persistent in this oceanic region, are influenced directly by the NPH. In this study, we combine 11 years of reanalysis and an unsupervised machine learning technique to examine the gamut of 850 hPa synoptic-scale circulation patterns. This approach reveals two distinguishable regimes-a dominant NPH setup and a land-falling cyclone-and in between a spectrum of large-scale patterns. We then use satellite retrievals to elucidate for the first time the explicit dependence of MBL cloud properties (namely cloud droplet number concentration, liquid water path, and shortwave cloud radiative effect-CRESW) on 850 hPa circulation patterns over the northeast Pacific Ocean. We find that CRESW spans from-146.8 to-115.5Wm-2, indicating that the range of observed MBL cloud properties must be accounted for in global and regional climate models. Our results demonstrate the value of combining reanalysis and satellite retrievals to help clarify the relationship between synoptic-scale dynamics and cloud physics. © 2020 Author(s). |
| 关键词 | atmospheric circulationboundary layercloud covercloud microphysicsmachine learningmarine atmospheretropical cyclonePacific OceanPacific Ocean (Northeast) |
| 语种 | 英语 |
| 来源机构 | Atmospheric Chemistry and Physics |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/131971 |
| 推荐引用方式 GB/T 7714 | Juliano T.W.,Lebo Z.J.. Linking large-scale circulation patterns to low-cloud properties[J]. Atmospheric Chemistry and Physics,2020,20(12). |
| APA | Juliano T.W.,&Lebo Z.J..(2020).Linking large-scale circulation patterns to low-cloud properties.,20(12). |
| MLA | Juliano T.W.,et al."Linking large-scale circulation patterns to low-cloud properties".20.12(2020). |
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