With an aim to make the interface more audience friendly and fill the communication with civil administration, the India Meteorological Department (IMD) has changed the languages and also redefined many of its terms.
Following are some of the major changes introduced by the department:
Normal: ± 10 percent of the long period average (lpa).
Below normal: Rainfall lowers than 10% below average of the lpa.
Above normal: Rainfall greater than 10% above average of the lpa.
Deficient year: Rainfall deficit between 10 and 20% up to 40% of India’s spatial area.
Large deficient year: Rainfall deficit of over 10% across more than 40% of India’s area.
Below normal: Rainfall lowers than 10% below average of the lpa.
Above normal: Rainfall greater than 10% above average of the lpa.
Deficient year: Rainfall deficit between 10 and 20% up to 40% of India’s spatial area.
Large deficient year: Rainfall deficit of over 10% across more than 40% of India’s area.
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