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 …

Cherrapunjee Now a wet desert

When Sted Syiemlieh was a little boy, people in his mountain village, Tyrna, a few km from Cherrapunjee in Meghalaya, could predict when the skies would open up. "It was always at the same time,' the 75-year-old farmer says. "Those days, we could tell how long the rain would last. …

Monsoon floods devastate South Asia

Floods in the mountain kingdom of Nepal? It sounds unlikely, but Nepal has a low-lying region called Terai, and much of it has been submerged in the past week following intense rains during the south Asian monsoon. Even more surprisingly, Nepal is blaming its downstream neighbour, India, for the floods.

For a rainy day

The onset of the monsoon is the crucial determinant for majority of farmers in rainfed areas of the country. With no access to irrigation or state support they have developed complex yet fascinating mechanisms that sustain agriculturewhether it is a birds nesting habit or the clouds. There is, however, a …

Climate change and changing vegetation of India

The vegetation of India evolved in time and space due to geomorphologic changes and the interactions of climate and biotic changes. There is a close linkage between climate and biota. Jul-Dec 2007

The shrinking Indian summer monsoon

In the backdrop of a changing climate, this report investigate whether the Indian summer monsoon is changing either in terms of duration or spatial coverage. Such an analysis specifically for the continental Indian region has both conceptual and societal implications, and has been lacking. It shows here, based on an …

Indian weather prediction model outdated, imprecise

an archaic weather prediction model, giving out one national forecast for the country's six climatic zones, is fast losing its utility in the face of far more accurate models used by global meteorological agencies. The disparity is evident, yet again, in this year's monsoon prediction. While the India Meteorological Department …

An objective definition of the Indian summer monsoon season and a new perspective on the ENSO monsoon relationship

The concept of an interannually varying Indian summer monsoon season is introduced here, considering that the duration of the primary driving of the Indian monsoon - the large-scale meridional gradient of the deep tropospheric heat source - may vary from one year to another. Onset (withdrawal) is defined as the …

Asian scientists on new plan to study monsoon patterns

a group of Asian scientists has framed a new plan to set up a comprehensive system to approach the study of changing monsoon patterns in Asia. A piecemeal approach towards the subject so far has led scientists to take this step. The plan, called mairs (Monsoon Asia Integrated Regional Studies), …

Extreme rainfall events: Vulnerability analysis for disaster management and observation system design

Extreme rainfall events today pose a serious threat to many populated and urbanized areas worldwide; an accurate estimate of frequency and distribution of these events can significantly aid policy planning and observation system design. We report here a first-ever high-resolution (10 KM) analysis of heavy rainfall episodes (defined as 24-hour …

Some studies of interannual variation of southwest monsoon over Gangetic plain

Some teleconnections studies between the monsoon rainfall over four meteorological subdivisions namely, plains of west U.P., East U.P., Bihar Plains and Gangetic West Bengal, thus constituting an area of U.P., adjoining Bihar and West Bengal and different thickness anomaly and geopotential heights over several levels in the troposphere over India …

Indus delta celebrates rains

ON September 22, around 50,000 people gathered at Kharo Chaan, 150 km southeast of Karachi in Pakistan, for quite an unprecedented festival: the Jashn-e-Indus Delta. Politicians and experts paid tributes to the river Indus, diyas (earthen lamps) were floated, a fair number of young men and women even danced in …

Climate change a market failure

In 2003, when he was appointed permanent secretary to the uk government's treasury, Nicholas Stern was the World Bank's chief economist.In July 2005, the uk government gave him the job of studying climate change from an economics perspective. The resultant Stern Review was released on October 30, 2006

Gone berserk

Rain is a stranger in the cold desert spread across Spiti in Himachal Pradesh and Ladakh in Jammu and Kashmir. Adjoining the Tibetan plateau, the high-altitude region falls in a rain shadow beyond the Himalaya range

Increasing trend of extreme rain events over India in a warming environment

Against a backdrop of rising global surface temperature, the stability of the Indian monsoon rainfall over the past century has been a puzzle. By using a daily rainfall data set, the researchers show (i) significant rising trends in the frequency and the magnitude of extreme rain events and (ii) a …

Irrigation influences monsoon, says study

monsoon distribution in the country is significantly influenced by irrigated agriculture. Scientists are now trying to figure out how vegetation and atmosphere interact and how it affects the spatial distribution of rainfall. A paper published in the July 21 issue of Geophysical Research Letters (Vol 33, No 14) said that …

Uneven rainfall

THE total seasonal rainfall during the year's southwest monsoon (June 1 to September 30) for the country as a whole was 99 per cent of its long-period average (LPA), which, being within plus or minus 10 per cent of the LPA, can be termed as a `normal' monsoon. However, both …

Monitoring monsoon

The skewed pattern of rainfall experienced across the country during this year's monsoon appears to be an anomaly. UNPREDICTABLITY of the monsoon, unusual spatial and temporal distribution of rainfall over the four-month period, shifting rainfall patterns, sustained low rainfall activity, drought-like conditions in some areas and excessive rainfall in others, …

El Nino, Indian monsoons may be linked

scientists claim to have solved the mystery of links between El Nino and monsoons in India, a development that can lead to more accurate weather forecasts. This was published online in Science's portal on September 7, 2006. El Nino, which means

Detecting the long-term impacts from climate variability and increasing water consumption on runoff in the Krishna river basin

Variations in climate, land-use and water consumption can have profound effects on river runoff. There is an increasing demand to study these factors at the regional to river basin-scale since these effects will particularly affect water resources management at this level. This paper presents a method that can help to …

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