If India’s monsoon rainfall were to dip below 10 per cent of the normal and span between 20 and 40 per cent of the country’s area, it would be called a “deficient” year instead of an “All India Drought Year”. A more severe instance, where the deficit exceeds 40 per cent and would have been… Continue reading Drought vocabulary
The South Asian Monsoon has been weakening since the 1950s with an increased incidence of extreme rainfall events. The monsoon is mainly driven by thermal contrast between the Indian subcontinent and the adjoining ocean. As the land warms up the air above the land surface is heated and rises up and is less dense than… Continue reading Aerosols, land-use changes may greatly weaken monsoon
More than half the winter is gone and most of India has hardly even noticed the cold. Temperatures are 4-5 degrees Celsius above the normal for this time of the year. This could turn out to be the warmest winter in India in several years. Scientists are blaming both global and regional/local factors. Globally, it… Continue reading El Niño, the ‘Godzilla’ warming the winter?
What happens in a Normal Year? Peru Current = Humboldt Current = Cold Current. During normal year 2 things are very strong – Cold Peru Current and Trade Winds. As a result, cold water is dragged from Peru towards Australia. What would be the result of this exchange? Warm water region around Australia is called Western… Continue reading A, B, C, D of El Nino