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DOI | 10.1175/JAS-D-17-0345.1 |
Variations of the Moist Static Energy Budget of the Tropical Indian Ocean Atmospheric Boundary Layer | |
de Szoeke, Simon P. | |
2018-05-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:5页码:1545-1551 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The atmospheric circulation depends on poorly understood interactions between the tropical atmospheric boundary layer (BL) and convection. The surface moist static energy (MSE) source (130 Wm(-2), of which 120 Wm(-2) is evaporation) to the tropical marine BL is balanced by upward MSE flux at the BL top that is the source for deep convection. Important for modeling tropical convection and circulation is whether MSE enters the free troposphere by dry turbulent processes originating within the boundary layer or by motions generated by moist deep convection in the free troposphere. Here, highly resolved observations of the BL quantify the MSE fluxes in approximate agreement with recent cloud-resolving models, but the fluxes depend on convective conditions. In convectively suppressed (weak precipitation) conditions, entrainment and downdraft fluxes export equal shares (60 Wm(-2)) of MSE from the BL. Downdraft fluxes are found to increase 50%, and entrainment to decrease, under strongly convective conditions. Variable entrainment and downdraft MSE fluxes between the BL and convective clouds must both be considered for modeling the climate. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000434270600011 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; TEMPERATURE-GRADIENT APPROXIMATION ; INTRASEASONAL OSCILLATIONS ; QUASI-EQUILIBRIUM ; CIRCULATION MODEL ; COLD POOLS ; MJO ; CONVECTION ; DYNAMO ; CONVERGENCE |
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/29583 |
专题 | 地球科学 |
作者单位 | Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA |
推荐引用方式 GB/T 7714 | de Szoeke, Simon P.. Variations of the Moist Static Energy Budget of the Tropical Indian Ocean Atmospheric Boundary Layer[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(5):1545-1551. |
APA | de Szoeke, Simon P..(2018).Variations of the Moist Static Energy Budget of the Tropical Indian Ocean Atmospheric Boundary Layer.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(5),1545-1551. |
MLA | de Szoeke, Simon P.."Variations of the Moist Static Energy Budget of the Tropical Indian Ocean Atmospheric Boundary Layer".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.5(2018):1545-1551. |
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