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 …

Quantifying the risk of extreme seasonal precipitation events in a changing climate

Increasing concentrations of atmospheric carbon dioxide will almost certainly lead to changes in global mean climate. But because - by defnition-extreme events are rare, it is significantly more difficult to quantify the risk of extremes. Ensemblebased probabilistic predictions, as used in short- and medium term forecasts of weather and climate, …

Aerosols, climate, and the hydrological cycle

Human activities are releasing tiny particles (aerosols) into the atmosphere. These human-made aerosols enhance scattering and absorption of solar radiation. They also produce brighter clouds that are less efficient at releasing precipitation. These in turn lead to large reductions in the amount of solar irradiance reaching Earth's surface, a corresponding …

Dangerous opening

THE Gujarat government has robbed Gir sanctuary of its tranquillity this monsoon, sparking off a furore amongst environmentalists. It has opened up a 10-km long road running through the sanctuary to facilitate pilgrimage to the Patla Mahadev temple, which is located inside the protected area. The road usually remains closed …

Cyclones, doubts and monsoon

the threat of another super cyclone hitting the Gujarat coast remained just that

Drought and El Ni o

drought is among the most commonly recurring natural disasters in the world. In India, it upsets the country's food security by seriously affecting agriculture, which is heavily dependent on the monsoon. In an attempt to predict such occasions, some researchers have attempted to link drought with the El Ni

Reduction of tropical cloudiness by soot

Measurements and models show that enhanced aerosol concentrations can augment cloud albedo not only by increasing total droplet cross-sectional area, but also by reducing precipitation and thereby increasing cloud water content and cloud coverage. Aerosol pollution is expected to exert a net cooling influence on the global climate through these …

Long-period fluctuations in monsoon floods in the Deccan Peninsula, India

In the present study, the temporal patterns of monsoon floods on five large rivers of the Deccan Peninsula have been investigated. Analyses of the long-term annual maximum discharge/state data, available for the last 100 years or so, show non-random behaviour in terms of distinct periods of high and low floods. …

Against the wall

the Kerala government plans to construct 96 kilometres (km) of seawall and restore 48 km during the Ninth Five Year plan. The construction work will cost Rs 310 crore. The government has already spent more than Rs 200 crore for construction of seawall. At a time when coastal erosion is …

Will it, won t it

this year, throughout the world, the warm Pacific ocean current of El Corriente del Ni

Water way

With the delayed monsoons and the threat of drought looming large over India, K 81kram Singh's first independent feature film, Tarpan, was premiered in July at the most appropriate time. Singh uses tarpan - the practice of offering water to the dead ancestors - as a metaphor to relate how …

Cropped harvest

AT least 2 million tonnes of loss of rice production is feared in Bangladesh during the current kharif-1 -- a drought which has left small rivers, mostly canals, creeks and ponds dry and rendered hundreds of thousands of pumps used for lifting ground water for irrigation and drinking, dry because …

No digging

An ambitious masterplan to tackle Bombay's perennial water-logging problem during its ferocious monsoons will use an innovative, sub-surface "no dig" technology. The new system, part of a Rs 616-crore project drawn up by the Bombay Municipal Corporation, which is up to its neck in public grievances, repairs pipes and stormwater …

Signals of the change in monsoonal precipitation at around 2,000 years BP in a sediment core off central west coast of India

A 4.80 m long shallow water sediment core, collected from the inner shelf (at 22 m water depth) off Karwar, near Kali river mouth is studied for foraminiferal tracers of palaeomonsoons. The climate history of this core which represents the last 4,500 years approximately revealed the evidences of a significant …

Where have we gone wrong?

Nation in turmoil RIMJHIM JAIN FLOODS are a major source of human misery in India and this year, too, they have wreaked havoc. Agriculture minister Balram Jakhar claims 2 million ha of cropped area has been damaged this year by the swirling waters. Reports from across the country present overwhelming …

Bangladesh ravaged by floods

THE MONSOONS in Bangladesh have once again triggered floods, displacing 1.5 million people. The worst affected are Sylhet and Chittagong, where road and rail links with the rest of the country were snapped. Bangladesh, located in the delta regions of two major rivers, the Ganga and the Brahmaputra, receives vast …

Monsoon: Make or break

When the axis of the monsoon trough falls between Jodhpur and Kharagpur, well-distributed rain falls over central India and the Indo-Gangetic plain. Sometimes, the trough shifts north, towards the Himalaya. In this situation, known as the break monsoonk, rain fall in the Himalaya foothills, and drought conditions prevail in the …

Monsoon drops in some areas, increases in others

THE AMOUNT of rain falling in various parts of India has changed over the years, decreasing in some places and increasing in others. K Rupa Kumar and his colleagues at the Indian Institute of Tropical Meteorology (IITM) in Pune report in a recent issue of the International Journal of Climatology …

Clearing the clouds

THIS was one storm that the meteorologists couldn't predict. When Vasant Gowariker, scientific adviser to the Prime Minister, and a team of meteorologists from the India Meteorological Department (IMD), announced in early April that the coming monsoon will be on the lower side of normal, the prediction drew a great …

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