Over 200 people are dead and millions affected due to the recent monsoons across India, Nepal and Bangladesh, causing heavy flooding. The Indian states of Bihar and Assam report the highest number of those affected - over 10 million people.
New satellite maps developed by the International Water Management Institute (IWMI) and the CGIAR Research Program on Water, Land and Ecosystems (WLE), show not only the extent of the inundation but also that crops could be severely damaged in Bihar and other districts, affecting the livelihoods of thousands of farmers.
The maps are generated using near real-time rainfall estimates (about four hours after observation) from the Japan Aerospace Exploration Agency (JAXA). Global Satellite Mapping of Precipitation (GsMAP) provides a global hourly rain rate at a 0.1 x 0.1 degree resolution.
IWMI/WLE analyzed the spatial and temporal distribution of the average daily rainfall to advise the disaster management agencies for emergency response and impact assessment. The maps are currently being used by the Disaster Management Center of Bihar to coordinate response teams and insurance partners.
“With climate-induced weather disasters increasing the vulnerability of smallholders and other marginalized communities, this technology is proving to be essential not just for recovery efforts, but also to increase farmer resilience and their opportunities for recovery,” says Giriraj Amarnath, senior researcher and Research Group Leader: Water Risks and Disasters at IWMI.
The satellite data on crop damage will help smallholders to access relief packages and sufficient crop insurance. IWMI and WLE with the CGIAR Research Program on Climate Change, Agriculture and Food Security are currently leading research on how satellite data and climate information can work towards climate risk insurance products for male and female smallholders.
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Amarnath, Giriraj; Rajah, Ameer; Alahacoon, Niranga; Inada, Yoshiaki; Inoue, R.; Aggarwal, Pramod. 2014. Potential of satellite data in catastrophic flood risk mapping and assessment: case studies from Asia and Africa. In Stal, M.; Sigrist, D.; Ammann, W. (Eds.). Proceedings of the 5th International Disaster and Risk Conference on Integrative Risk Management - The Role of Science, Technology and Practice, Davos, Switzerland, 24 - 28 August 2014. Extended Abstracts. Davos, Switzerland: Global Risk Forum GRF Davos. pp.52-55. pp.52-55.Mitigating the impacts of floods in South and Southeast Asia.
CGIAR Research Program on Water, Land and Ecosystems (WLE).2015. Mitigating the impacts of floods in South and Southeast Asia.Colombo:Sri Lanka. CGIAR Research Program on Water, Land and Ecosystems (WLE).
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