Precipitable water and dew point temperature relationship during the Indian summer monsoon

Two years of contrasting monsoon rainfall over the Indian subcontinent are studied with reference to (a) total precipitable water and precipitation efficiencies during the respective years and (b) the correlation between the dew point temperature at a particular level and the total precipitable water. It is found that the maximum correlation occurs between the dew point temperature at the 850 mb level and the total precipitable water at an individual station. The precipitation efficiencies are less during the year of bad monsoon. A linear regression equation is attempted between the total precipitable water and dew point temperature.