Gp. Singh et J. Chattopadhyay, RELATIONSHIP OF TROPOSPHERIC TEMPERATURE ANOMALY WITH INDIAN SOUTHWEST MONSOON RAINFALL, International journal of climatology, 18(7), 1998, pp. 759-763
The statistical relationship between the Indian southwest monsoon rain
fall over all India (AIR), northwest India (NWR) and peninsular India
(PIR) and tropospheric temperature (TT) anomaly over seven selected In
dian stations between 300 and 850 hPa has been examined for the period
1961-1990. The study is furthered by means of sliding 15 years correl
ation coefficients. The results indicate that the previous May's tropo
spheric temperature anomaly has a strong and direct relationship with
southwest monsoon rainfall, suggesting that warmer/colder tropospheric
temperature in May leads to good/bad southwest monsoon rainfall over
India. The correlations are stronger for AIR and NWR followed by PIR.
Its stability analysis displays best correlation during 1967-1981 and
1968-1982 and again during the recent years 1975-1989 and 1976-1990 fo
r all the regions. Significant direct correlations are also obtained w
ith the tropospheric temperature anomaly of the previous April and spr
ing season. The result also suggests that antecedent May tropospheric
temperature anomaly may be useful in the long range prediction of the
following southwest monsoon rainfall over India. (C) 1998 Royal Meteor
ological Society.