Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL089823 |
Northward Propagation of the Inter Tropical Convergence Zone and Strengthening of Indian Summer Monsoon Rainfall | |
Vittal Hari; Gabriele Villarini; Subhankar Karmakar; Laura J. Wilcox; Mat Collins | |
2020-11-20 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | Since 2002, there has been a clear increase in Indian summer monsoon rainfall (ISMR). We demonstrate that this increase is associated with a change in the dynamics of the Intertropical Convergence Zone (ITCZ). Using a recently‐released reanalysis product from 1980‐2016, we show that the ITCZ has strengthened and propagated northward since 2002. Analysis of the total energy‐budget reveals an increase in energy divergence and atmospheric diabatic heating, which is consistent with the changes in the ITCZ. Although global aerosol optical depth shows a significant positive trend during 1980‐2016, it has declined over many parts of India since 2002. We put forward the hypothesis that this is the driver of the changing characteristics of the ITCZ. Our results suggest that changes in the dynamics of the ITCZ, together with changes in the energy/moisture‐budget, are responsible for the strengthening of ISMR since 2002, consistent with the emergence of a greenhouse‐gas induced signal. |
领域 | 气候变化 |
URL | 查看原文 |
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/304268 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Vittal Hari,Gabriele Villarini,Subhankar Karmakar,et al. Northward Propagation of the Inter Tropical Convergence Zone and Strengthening of Indian Summer Monsoon Rainfall[J]. Geophysical Research Letters,2020. |
APA | Vittal Hari,Gabriele Villarini,Subhankar Karmakar,Laura J. Wilcox,&Mat Collins.(2020).Northward Propagation of the Inter Tropical Convergence Zone and Strengthening of Indian Summer Monsoon Rainfall.Geophysical Research Letters. |
MLA | Vittal Hari,et al."Northward Propagation of the Inter Tropical Convergence Zone and Strengthening of Indian Summer Monsoon Rainfall".Geophysical Research Letters (2020). |
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