Monsoons

Order of the National Green Tribunal regarding desilting of the Defence Colony drain in Delhi before the monsoon, 16/04/2025

Order of the National Green Tribunal in the matter of Nizamuddin West Association Vs Union of India & Others dated 16/04/2025. The matter related to desilting of 24 drains with special focus on two drains - Kushak drain and Sunheri Pul drain before the monsoon. The court was informed that …

What is El Nino?

EL Nino refers to the warm current that flows southward along the coasts of Ecuador and Peru, between January and March, which marks the end of the local fishing season when the sea temperature falls. Some years, however, the temperature continues to remain high. This anomaly, which occurs every two …

An overview of the Madden-Julian Oscillation and its relation to monsoon and mid-latitude circulation

In the past decade there has been extensive research into tropical intraseasonal variability, one of the major components of the low frequency variability of the general atmospheric circulation. This paper briefly reviews the state-of-the-art in this research area: the nature of the Madden-Julian Oscillation, its relation to monsoonal and extratropical …

The onset of the southwest monsoon of 1990

Statistics relating to the date of onset of the southwest monsoon over Kerala for the 100-year period 1891-1990 reveal that the mean and median dates of onset for south Kerala are 31 May and 1 June, with a standard deviation of 8.5 days. Declaring the date of monsoon onset is …

A Parsimonious model for prediction of monsoon rainfall in India

A research paper by Gowariker have used multiple and power regression involving 15 independent variables for long range forecasting of monsoon rainfall in India. They have also argued that, when most of the independent variables are 'favourable' almost invariably the monsoon rainfall is normal. In this note we formalize this …

Promise me the monsoon

 @sunitanar Why this weird weather? Why have western disturbances—the extra-tropical storms that originate in the Mediterranean and Atlantic seas—been lashing us again and again, with devastating impacts on agriculture? Is this normal? Or has weird weather become the new definition of normal? The India Meteorological Department says the severe and …

Halla Bol: Lessons Learnt During The Chennai Disaster

The nation stands together behind the residents of Chennai, but will the latest floods improve India's preparedness for similar natural disasters in the future?

S. K. Dash

Areas of Interest : Monsoon Studies, Climate Modelling, High Performance Computing.

Krishna Kumar

Dr Krishna Kumar is Scientist & Program Manager at Indian Institute of Tropical Meteorology, Dr Homi Bhabha Road, Pashan, Pune-411008. Research Interest: Climate Change, Monsoons.

The basic causes of the large-scale deficiency in the South-West Monsoon rainfall over India in 1965 and 1966

The years 1965 and 1966 will be remembered in Indian history as two successive years in which the failure of the south-west monsoon had a disastrous effect on Indian economy. This article is an attempt to find out the basic causes of this large-scale deficiency in the monsoon rainfall.

Solar radiation and the Indian monsoon

The S.W. monsoon or summer monsoon is a major event in the agricultural life of India, which has been widely studied. The chief characteristic of the pressure distribution over India during the monsoon is the trough of low which extends from the the S.E. Punjab to the head of the …

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