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| DOI | 10.1029/2020JD032998 |
| Relative Contribution of Precipitation and Air Temperature on Dry Season Drying in India, 1951–2018 | |
| Mishra V. | |
| 发表日期 | 2020 |
| ISSN | 2169897X |
| 卷号 | 125期号:15 |
| 英文摘要 | Soil moisture plays an essential role in food production and land-atmosphere feedback. However, the relative contribution of precipitation and air temperature on dry season (October–December) soil moisture has not been systematically examined in India. Using observations and simulations from the Variable Infiltration Capacity model, a significant (4%, p value = 0.04) decline in soil moisture (dry season drying hereafter) was found in a large part of India during the 1951–2018. The decline in the summer monsoon precipitation in India during 1951–2018 is mainly due to a decrease in rainfall during the late monsoon season (August–September). A substantial decline (−18.6%, p value = 0.009) in the late monsoon and (−26%, p value = 0.19) dry season precipitation was observed. A significant warming (0.75°C, p value = 0.002) has occurred during the dry season between 1951 and 2018. The relative contribution of decline in precipitation in the late monsoon (30%) and dry season (34%) is considerably higher than the dry season warming (15%). The previously unexplored role of climate warming on the dry season drying was analyzed using Maximum Covariance Analysis between precipitation and sea surface temperature, which suggests both large-scale and localized influences. Climate warming over the Indian and Atlantic Oceans is associated with declining precipitation during the late monsoon and dry seasons over central India. Also, climate warming over land exacerbates the dry season drying by depleting soil moisture. The dry season drying over a large part of India contributed by climate warming has substantial implications for irrigation water management and groundwater abstraction. ©2020. American Geophysical Union. All Rights Reserved. |
| 英文关键词 | climate warming; drought; precipitation; soil moisture; VIC mode |
| 语种 | 英语 |
| 来源期刊 | Journal of Geophysical Research: Atmospheres
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/185879 |
| 作者单位 | Civil Engineering, Indian Institute of Technology (IIT) Gandhinagar, Gandhinagar, India; Earth Sciences, Indian Institute of Technology (IIT) Gandhinagar, Gandhinagar, India |
| 推荐引用方式 GB/T 7714 | Mishra V.. Relative Contribution of Precipitation and Air Temperature on Dry Season Drying in India, 1951–2018[J],2020,125(15). |
| APA | Mishra V..(2020).Relative Contribution of Precipitation and Air Temperature on Dry Season Drying in India, 1951–2018.Journal of Geophysical Research: Atmospheres,125(15). |
| MLA | Mishra V.."Relative Contribution of Precipitation and Air Temperature on Dry Season Drying in India, 1951–2018".Journal of Geophysical Research: Atmospheres 125.15(2020). |
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