| _version_ | 1866901604283711488 |
|---|---|
| author | Wu, Zeming Hu, Chundi Yang, Song Huang, Gang Wu, Renguang |
| author_facet | Wu, Zeming Hu, Chundi Yang, Song Huang, Gang Wu, Renguang |
| contents | <p>This is the source code for plotting the figure in the main text of manuscript titled "Regulation of Southern Annular Mode on the Indian summer monsoon withdrawal rivals that of ENSO"</p> <p> </p> <p>Abstract: Indian summer monsoon dramatically affects regional water resources, agriculture and economy of South Asian countries, but the changes in its withdrawal day (WD) is underexplored. Event the El Niño/Southern Oscillation (ENSO) only explains about one third of the WD variance. Here we explore the robust modulation of the Southern Annular Mode (SAM) on the WD. We show that the meridional shift of the Indian Ocean atmospheric circulations driven by SAM can alter trade wind and sea surface temperature, causing anomalous precipitation near the Maritime Continent. Therefore, the Indian summer monsoon circulations are changed via the Matsuno-Gill response. In particular, positive (negative) SAM causes delayed (advanced) WD. We further examine the combined effects of SAM and El Niño/Southern Oscillation (ENSO) on WD. Since SAM and ENSO are linearly uncorrelated, their effects on WD can be linearly superposed. The out-of-phase configurations of SAM and ENSO can cause significant WD anomalies, whereas the in-phase configurations cannot. Inspiringly, a binary regression model using SAM and ENSO suggests that SAM and ENSO together can explain more than 50% of the WD variance. These results deepen our understanding of the Indian summer monsoon variability, helping improve regional water resource management and agricultural planning, mitigate the socioeconomic impacts of monsoon fluctuations.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_14091756 |
| institution | Zenodo |
| language | |
| publishDate | 2024 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Regulation of Southern Annular Mode on the Indian summer monsoon withdrawal rivals that of ENSO Wu, Zeming Hu, Chundi Yang, Song Huang, Gang Wu, Renguang <p>This is the source code for plotting the figure in the main text of manuscript titled "Regulation of Southern Annular Mode on the Indian summer monsoon withdrawal rivals that of ENSO"</p> <p> </p> <p>Abstract: Indian summer monsoon dramatically affects regional water resources, agriculture and economy of South Asian countries, but the changes in its withdrawal day (WD) is underexplored. Event the El Niño/Southern Oscillation (ENSO) only explains about one third of the WD variance. Here we explore the robust modulation of the Southern Annular Mode (SAM) on the WD. We show that the meridional shift of the Indian Ocean atmospheric circulations driven by SAM can alter trade wind and sea surface temperature, causing anomalous precipitation near the Maritime Continent. Therefore, the Indian summer monsoon circulations are changed via the Matsuno-Gill response. In particular, positive (negative) SAM causes delayed (advanced) WD. We further examine the combined effects of SAM and El Niño/Southern Oscillation (ENSO) on WD. Since SAM and ENSO are linearly uncorrelated, their effects on WD can be linearly superposed. The out-of-phase configurations of SAM and ENSO can cause significant WD anomalies, whereas the in-phase configurations cannot. Inspiringly, a binary regression model using SAM and ENSO suggests that SAM and ENSO together can explain more than 50% of the WD variance. These results deepen our understanding of the Indian summer monsoon variability, helping improve regional water resource management and agricultural planning, mitigate the socioeconomic impacts of monsoon fluctuations.</p> |
| title | Regulation of Southern Annular Mode on the Indian summer monsoon withdrawal rivals that of ENSO |
| url | https://doi.org/10.5281/zenodo.14091756 |