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DOI | 10.1007/s00382-017-4058-2 |
The role of SST variability in the simulation of the MJO | |
Stan, Cristiana | |
2018-10-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 51页码:2943-2964 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The sensitivity of the Madden-Julian Oscillation to high-frequency variability (period 1-5 days) of sea surface temperature (SST) is investigated using numerical experiments with the super-parameterized Community Climate System Model. The findings of this study emphasize the importance of air-sea interactions in the simulation of the MJO, and stress the necessity of an accurate representation of ocean variability on short time scales. Eliminating 1-5-day variability of surface boundary forcing reduces the intraseasonal variability (ISV) of the tropics during the boreal winter. The ISV spectrum becomes close to the red noise background spectrum. The variability of atmospheric circulation shifts to longer time scales. In the absence of high-frequency variability of SST the MJO power gets confined to wavenumbers 1-2 and the magnitude of westward power associated with Rossby waves increases. The MJO convective activity propagating eastward from the Indian Ocean does not cross the Maritime Continent, and convection in the western Pacific Ocean is locally generated. In the Indian Ocean convection tends to follow the meridional propagation of SST anomalies. The response of the MJO to 1-5-day variability in the SST is through the charging and discharging mechanisms contributing to the atmospheric column moist static energy before and after peak MJO convection. Horizontal advection and surface fluxes show the largest sensitivity to SST perturbations. |
英文关键词 | MJO Air-sea interaction Intraseasonal variability Climate modeling Super-parameterization |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000444947600033 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; SEA-SURFACE TEMPERATURE ; STATIC ENERGY BUDGET ; TROPICAL WESTERN PACIFIC ; INTRASEASONAL VARIABILITY ; DIURNAL CYCLE ; TOGA COARE ; EQUATORIAL PACIFIC ; AFRICAN MONSOON ; ASIAN MONSOON |
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/35205 |
专题 | 气候变化 |
作者单位 | George Mason Univ, Ctr Ocean Land Atmosphere Studies, Dept Atmospher Ocean & Earth Sci, Fairfax, VA 22030 USA |
推荐引用方式 GB/T 7714 | Stan, Cristiana. The role of SST variability in the simulation of the MJO[J]. CLIMATE DYNAMICS,2018,51:2943-2964. |
APA | Stan, Cristiana.(2018).The role of SST variability in the simulation of the MJO.CLIMATE DYNAMICS,51,2943-2964. |
MLA | Stan, Cristiana."The role of SST variability in the simulation of the MJO".CLIMATE DYNAMICS 51(2018):2943-2964. |
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