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In the Gash Delta of Eastern Sudan, spate irrigation (flood-recession farming) contributes substantially to rural livelihoods by providing better yields than rainfed dryland farming. However, spate irrigation farmers are challenged by the unpredictability of flooding. In recent decades, the numbe...


Amarnath, GirirajSimons, G.W.H.Alahacoon, NirangaSmakhtin, V.Sharma, Bharat R.Gismalla, Y.Mohammed, Y.Andriessen, M.C.M.[Using smart ICT to provide weather and water information to smallholders in Africa: the case of the Gash River Basin, Sudan]Using smart ICT to provide weather and water information to smallholders in Africa: the case of the Gash River Basin, Sudan

Responding to rainfall variability has always been one of the most critical risks facing farmers. It is also an integral part of the job of water managers, whether it be designing interventions for flood management, improving the reliability of water supply for irrigation or advising on prioritie...


Bird, JeremyRoy, SrabaniShah, TushaarAggarwal, Pramod K.Smakhtin, Vladimir U.Amarnath, GirirajAmarasinghe, Upali A.Pavelic, PaulMcCornick, Peter G.[Adapting to climate variability and change in India]Adapting to climate variability and change in India

The paper presents a moderate resolution imaging spectroradiometer (MODIS) time-series imagery-based algorithm for detection and mapping of seasonal and annual changes in flood extent, and tests this using the flooding of the Indus River Basin in 2010 – one of the greatest recent disasters that a...


Amarnath, GirirajRajah, Ameer[An evaluation of flood inundation mapping from MODIS and ALOS satellites for Pakistan]An evaluation of flood inundation mapping from MODIS and ALOS satellites for Pakistan

Soil moisture is a highly suitable indicator for assessing agricultural drought, as plants start to wilt when there is not sufficient soil water to meet evapotranspiration demand. In this study, we provide insights on information obtained from satellite surface soil moisture observations (as comp...


Modanesi, S.Massari, C.Camici, S.Brocca, L.Amarnath, Giriraj[Do satellite surface soil moisture observations better retain information about crop-yield variability in drought conditions?]Do satellite surface soil moisture observations better retain information about crop-yield variability in drought conditions?

Increasing frequency of drought events coupled uncertainty imparted by climate change pose grave threat to agriculture and thereby overall food security. This is especially true in South Asian region where world’s largest concentration of people depends on agriculture for their livelihood. Indic...


Pani, PeejushAlahacoon, NirangaAmarnath, GirirajBharani, GurminderMondal, S.Jeganathan, C.[Comparison of SPI [Standardized Precipitation Index] and IDSI [Integrated Drought Severity Index] applicability for agriculture drought monitoring in Sri Lanka]Comparison of SPI [Standardized Precipitation Index] and IDSI [Integrated Drought Severity Index] applicability for agriculture drought monitoring in Sri Lanka
Amarnath, GirirajPani, PeejushAlahacoon, NirangaChockalingam, J.Mondal, S.Matheswaran, K.Sikka, AlokRao, K. V.Smakhtin, Vladimir[Development of a system for drought monitoring and assessment in South Asia]Development of a system for drought monitoring and assessment in South Asia
Amarnath, GirirajClark, James[Drought monitoring system helps strengthen resiliency to climate change]Drought monitoring system helps strengthen resiliency to climate change
Allan, J. A.Amarnath, GirirajBalasubramanya, SoumyaDharmasena, P. B.Gaasbeek, T.[Colombo Development Dialogues 2: water security and climate variability]Colombo Development Dialogues 2: water security and climate variability

Critical information on a flood-affected area is needed in a short time frame to initiate rapid response operations and develop long-term flood management strategies. This study combined rainfall trend analysis using Asian Precipitation—Highly Resolved Observational Data Integration towards Evalu...


Alahacoon, NirangaMatheswaran, KarthikeyanPani, PeejushAmarnath, Giriraj[A decadal historical satellite data and rainfall trend analysis (2001–2016) for flood hazard mapping in Sri Lanka]A decadal historical satellite data and rainfall trend analysis (2001–2016) for flood hazard mapping in Sri Lanka

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