Monsoon model: In 1930's, the director of IMD, Sir Gilbert Walker established a relationship between Indian monsoon and the various worldwide climatic factors.
It was Dr Vasantrao Govarikar who finally developed the monsoon model based upon 16 worldwide climatic parameters and this model was in use from 1990 to 2002.
There are three types of monsoon model:
Mathematical model (Dynamic): In this model the mathematical analysis is done. Forecasts are made with the help of mathematical models. Estimates of current weather related events and ongoing physical interactions between them are taken in to account for the analysis.
(B) Holistic model: In this model, predictions are based upon many parameters which were used in other models are used in the holistic way to give the monsoon prediction.
(C) Statistical model : In this model, a collective study is undertaken by understanding the current climatic observations in a region and the earlier parameters such as oceanic temperature, atmospheric pressure and the nature of the monsoon rainfall of several years. There is comparison of both the data done and from this comparative analysis the monsoon predictions are made in Statistical model.
