Cyclone Amphan and crop damage assessment using Remote Sensing and GIS technology

Crop Damage Assessment

After any natural catastrophe it is imperative to answer the questions such as how much damage have happened? Locations where the damage is high? This could aid the government and insurance companies in speedy and reasonable payouts to the individuals affected. The satellite imagery from remote sensing is adequately used in crop loss and damage assessments. The combination of microwave (all weather capabilities) and optical satellite data from senitnel-1 and sentinel-2 respectively with 10 meters spatial resolution has huge potential for crops monitoring at parcel to regional level.

Below is the use case developed by SourceTrace™ for crop damage assessment due to super cyclonic storm Amphan. This deadly tropical cyclone caused widespread damage in Eastern India, West Bengal to be specific, and also Bangladesh in May 2020.

Crop Damage Assessment

Disclaimer: The flood inundation based on 21st and 22nd May 2020 Sentinel-1 satellite imagery. Inundation can vary in other dates. Also the ground validation is not done.

Crop Damage Assessment

The microwave (sentinel-1) data used to extract the potential flood area and the optical (sentinel-2) data used to map the standing crops in the months of May 2020. We have used the combination of image analytics and machine learning tools in image processing and extraction potential flood area and standing crops. The Geographic Information System (GIS) spatial analysis used in area estimation of storm flood area and standing crops affected.

District wise potential flood area and cropland affected in West Bengal

area in hectares

Districts Potential Flood Area Cropland affected
EAST MEDINIPUR 54,394 29,681
WEST MEDINIPUR 24,781 16,843
BARDDHAMAN 5,288 4,187
HAORA 4,913 2,550
CHUNCHURA (HUGLI) 3,706 3,306
ALIPUR (SOUTH TWENTY FOUR PARGANAS) 5,181 2,568
BARASAT (NORTH TWENTY FOUR PARGANAS) 3,750 1,737
KRISHNANAGAR (NADIA) 1,463 1,075
BAHARAMPUR 431 81
BALURGHAT 200 18
KOLKATA (CAPITAL) 119 115
Total 104,225 62,165

Crop Damage Assessment

Disclaimer: The flood inundation based on 21st and 22nd May 2020 Sentinel-1 satellite imagery. Inundation can vary in other dates. Also the ground validation is not done.

Crop Damage Assessment

The parts of Sylhet and Dhaka divisions were flooded due to heavy rain during 21st May 2020. The Sylhet and Dhaka received 55 mm/24 hrs and 67 mm/24 hrs respectively (Bangladesh Meteorological Department).

Division wise potential flood area and cropland affected in Bangladesh

area in hectares

Divisions Potential Flood Area Cropland affected
SYLHET 80,844 25,709
DHAKA 62,775 42,753
BARISAL 42,753 26,389
KHULNA 4,913 2,550
CHITTAGONG 15,738 12,213
RAJSHAHI 6,663 3,274
RANGPUR 650 361
Total 225,881 120,603

Further with this database at farm level standing crop and the area affected due to flooding could be estimated.

SourceTrace is a SaaS (Software as a Service) company that focuses on sustainable agriculture and empowerment of farmers. SourceTrace’s advanced technology platform DATAGREEN provides comprehensive solutions to manage all aspects of the agricultural value chain.

Crop Damage Assessment

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About SourceTrace

SourceTrace is a SaaS (Software As A Service) company that focuses on sustainable agriculture and empowerment of farmers.

SourceTrace's advanced technology platform DATAGREEN provides comprehensive solutions to manage all aspects of the agricultural value chain.

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