McDermid, S P and Dileepkumar, G and Kadiyala, M D M and Nedumaran, S and Singh, P and Srinivasa, Chukka and Gangwar, B. and Subash, N. and Ahmad, Ashfaq and Zubair, Lareef and Nissanka, S. P. (2015) Integrated Assessments of the Impact of Climate Change on Agriculture: An Overview of AgMIP Regional Research in South Asia. In: Handbook of Climate Change and Agroecosystems: The Agricultural Model Intercomparison and Improvement Project (AgMIP) Integrated Crop and Economic Assessments, Part 2. ICP Series on Climate Change Impacts, Adaptation, and Mitigation — Vol. 3 . Imperial College Press, London, pp. 201-217. ISBN 978-1-78326-567-1
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Abstract
South Asia encompasses a wide and highly varied geographic region, and includes climate zones ranging from the mountainous Himalayan territory to the tropical lowland and coastal zones along alluvial floodplains. The region’s climate is dominated by a monsoonal circulation that heralds the arrival of seasonal rainfall, upon which much of the regional agriculture relies (Mall et al., 2006). The spatial and temporal distribution of this rainfall is, however, not uniform over the region. Northern South Asia, central India, and the west coast receive much of their rainfall during the southwest monsoon season, between June and September. These rains partly result from the moisture transport accompanying the monsoonal winds, which move in the southwesterly direction from the equatorial Indian Ocean. Regions further south, such as south/southeast India and Sri Lanka, may receive rains both from the southwest monsoon, and also during the northeast monsoon season between October and December (with northeasterly monsoonal wind flow and moisture flux), which results in a bi- or multi-modal rainfall distribution. In addition, rainfall across South Asia displays a large amount of intraseasonal and interannual variability (Fig. 1). Interannual variability is influenced by many drivers, both natural (e.g., El Ni˜no Southern Oscillation; ENSO) and man-made (e.g., rising temperatures due to increasing greenhouse gas concentrations), and it is challenging to obtaining accurate time-series of annual rainfall, even amongst various observed data products, which display inconsistencies amongst themselves (exemplified in Fig. 1). These climatic and rainfall variations can further complicate South Asia’s agricultural and water management.
| Item Type: | Book Section |
|---|---|
| Divisions: | UNSPECIFIED |
| CRP: | UNSPECIFIED |
| Series Name: | ICP Series on Climate Change Impacts, Adaptation, and Mitigation — Vol. 3 |
| Uncontrolled Keywords: | Climate Change, Agriculture, AgMIP Research, South Asia, Climate Change Impacts |
| Subjects: | Others > Agriculture Others > South Asia Others > Climate Change |
| Depositing User: | Mr Ramesh K |
| Date Deposited: | 15 Jun 2018 05:32 |
| Last Modified: | 15 Jun 2018 05:32 |
| URI: | http://oar.icrisat.org/id/eprint/10749 |
| Acknowledgement: | UNSPECIFIED |
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