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LATEST NEWS UPDATES | How wet is the ground after rain? for first time, India gets soil moisture map -Sowmiya Ashok

How wet is the ground after rain? for first time, India gets soil moisture map -Sowmiya Ashok

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published Published on Oct 5, 2018   modified Modified on Oct 5, 2018
-The Indian Express

This forecast, following a joint exercise by IIT Gandhinagar and the India Meteorological Department (IMD), for the first time, provides a country-wide soil moisture forecast at seven and 30-day lead times.

New Delhi:
With the rabi season around the corner, a countrywide forecast prepared at the end of the monsoon season suggests deficit soil moisture conditions are likely in Gujarat, Bihar, Jharkhand, Tamil Nadu and southern Andhra Pradesh.

This forecast, following a joint exercise by IIT Gandhinagar and the India Meteorological Department (IMD), for the first time, provides a country-wide soil moisture forecast at seven and 30-day lead times.

The analysis also indicates that soil moisture conditions in western Uttar Pradesh, Bundelkhand, and Chhattisgarh are likely to be normal or surplus at the start of the rabi sowing season. Soil moisture is crucial for agriculture since it directly affects crop growth and how much irrigation is required for the area.

A team led by Vimal Mishra, associate professor at IIT Gandhinagar, uses the ‘Variable Infiltration Capacity’ model to provide the soil moisture prediction. The product, termed ‘Experimental Forecasts Land Surface Products’, is available on the IMD website and has been developed using the hydrological model that takes into consideration soil, vegetation, land use and land cover among other parameters.

Forecasting of soil moisture holds significance for the rabi season. As per official data, the total area sown under rabi crops is around 625 lakh hectares of which wheat takes up 300 lakh hectares. Timely soil moisture forecasts will help target interventions, in terms of seed varieties for better planning in agriculture.

“India has been working on its own high-resolution soil database that is essential for soil parameters used in the modelling. However, the database is not available for the entire country currently. Once available, we will replace it with that information,” Mishra told The Indian Express. At present, the IIT Gandhinagar team is using the IMD’s grid-level observations and forecast products of rainfall and temperature.

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The Indian Express, 3 October, 2018, https://indianexpress.com/article/india/how-wet-is-the-ground-after-rain-for-first-time-india-gets-soil-moisture-map-5383688/


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