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DOI | 10.1029/2020JD032591 |
Impact of Cloud Longwave Scattering on Radiative Fluxes Associated With the Madden-Julian Oscillation in the Indian Ocean and Maritime Continent | |
Ren, Tong1; Yang, Ping1; Schumacher, Courtney1; Huang, Xianglei2; Lin, Wuyin3 | |
2020-07-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Previous studies suggested that cloud longwave radiation contributes to the development and maintenance of the Madden-Julian Oscillation (MJO) and model-based convection is highly sensitive to the radiation scheme. However, currently used radiation schemes do not take cloud longwave scattering into account, resulting in an overestimation of the outgoing longwave radiation (OLR) and an underestimation of the downward longwave flux at the surface. We use combined active and passive satellite cloud property retrievals to quantify the one-layer cloud OLR and heating rate (HR) biases introduced by neglecting cloud longwave scattering in the Indian Ocean and Maritime Continent in the context of MJO, with a focus on its phases 3, 5, and 6. The results show that the satellite-detected one-layer cloud area consists primarily of ice clouds, particularly during the boreal winter in the 4-year study period. An increased ice cloud area fraction of one-layer cloud groups is present up to 5 days before the onset of MJO events. If longwave scattering is neglected, the composite mean OLR overestimation over the one-layer ice cloud area from 5 days before to 4 days after the MJO passage is approximately 3.5 to 5.0 W m(-2). Neglecting longwave scattering also leads to aHRunderestimation at cloud base and an overestimation at cloud top, making the base-to-top heating gradient less sharp at the cloud-resolving scale. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000551484700034 |
WOS关键词 | STATIC ENERGY BUDGET ; TROPICAL INTRASEASONAL OSCILLATION ; HOMOGENEOUS ICE NUCLEATION ; MULTIPLE-SCATTERING ; DIURNAL CYCLE ; CIRRUS CLOUDS ; LIFE-CYCLE ; OPTICAL-PROPERTIES ; GRAVITY-WAVES ; KELVIN WAVE |
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/289510 |
专题 | 气候变化 |
作者单位 | 1.Texas A&M Univ, Dept Atmospher Sci, College Stn, TX 77843 USA; 2.Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA; 3.Brookhaven Natl Lab, Brookhaven, NY USA |
推荐引用方式 GB/T 7714 | Ren, Tong,Yang, Ping,Schumacher, Courtney,et al. Impact of Cloud Longwave Scattering on Radiative Fluxes Associated With the Madden-Julian Oscillation in the Indian Ocean and Maritime Continent[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(13). |
APA | Ren, Tong,Yang, Ping,Schumacher, Courtney,Huang, Xianglei,&Lin, Wuyin.(2020).Impact of Cloud Longwave Scattering on Radiative Fluxes Associated With the Madden-Julian Oscillation in the Indian Ocean and Maritime Continent.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(13). |
MLA | Ren, Tong,et al."Impact of Cloud Longwave Scattering on Radiative Fluxes Associated With the Madden-Julian Oscillation in the Indian Ocean and Maritime Continent".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.13(2020). |
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