Climate

Drought diagnostics

Print edition : May 12, 2017

A farmer showing dried paddy crop at Siruvapuri, 40 kilometres from Chennai. Tamil Nadu's 32 districts were declared drought affected following poor rainfall received during the north-east monsoon period of October to December 2016. Photo: V. Ganesan

Rain clouds over Visakhapatnam as the south-west monsoon became active in coastal Andhra Pradesh under the influence of low pressure in the Bay of Bengal on June 28, 2016. Photo: K.R. Deepak

Figure 1 (a-c): Maps showing Standardised Precipitation Index during June-September, October-December, and the whole year of 2016.

Figures 2 and 3: Subdivisional rainfall in the southern peninsular region during the north-east monsoon of 2016. (Right) Map showing rainfall departures in the districts of the southern peninsular region at the end of the south-west monsoon.

Figure 5: Negative Indian Ocean Dipole index during the entire year of 2016.

Figure 6: Map showing consensus outlook forecast for NEM 2016 in September 2016 by SASCOF.

Table 1: Normal seasonal rainfall during the south-west monsoon and the north-east monsoon in the five subdivisions of the southern peninsula.

Table 2: Rainfall in the nine subdivisions of the southern peninsular region during the 2016 south-west monsoon.

Table 3: Monthly rainfall for the nine subdivisions of the southern peninsular region during the 2016 south-west monsoon.

Table 4. Monthly subdivisional rainfall in the five subdivisions of the southern peninsular region during the 2016 north-east monsoon.

The unusual twin failure of the south-west monsoon and the north-east monsoon following immediately in the southern States in 2016 is the chief reason for the unprecedented drought situation in the region.
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