Daily Current Affairs Article 21th January 2021: The India Meteorological Department (IMD) may introduce new monsoon models this year to better forecast changes in rainfall.
There were three different models that could be tested this year. Two of them were dynamical models and one a statistical model.
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In the former, the climate on any particular day is simulated on supercomputers and meteorologists observe the changing daily output.
The other is the traditional statistical model that equates relationships of physical parameters, such as for instance sea surface temperatures, snowfall, the temperature of landmass etc, with the actual observed rainfall in the past.
The three models under consideration are:
All of them are ‘ensembles’ meaning smaller models are combined to arrive at an average value. The traditional statistical model would continue to be used this year.
