Aerosols above the Himalaya may alter regional thermostat nano-sized pollutants were for the first time found reacting with each other above the Himalaya. Scientists from the Universite Blaise Pascal, France, said these ultra-fine pollutants are combining to form aerosols

BY OUR CORRESPONDENT
NEW DELHI

Nov. 26: Expressing concern over the receding Himalayan glaciers, Prime Minister Manmohan Singh on Wednesday said all resources must be mobilised to protect the Himalayas and its eco-system.

One of the most serious problems resulting from the brown haze that envelopes vast areas of Asia, the Middle East, southern Africa and the Amazon Basin, is the retreat of the glaciers in the Himalayas and Hindu Kush and in Tibet, according to lead researcher Veerabhadran Ramanathan, a professor of climate and ocean sciences at the University of California in San Diego.

The strategy of building embankments to constrain river flow and to prevent floods in north Bihar has proven to be questionable and flawed. Reliance on a dam-and-reservoir system for that purpose only offers limited protection and even greater risks of flooding in case of damage.

The glaciers in the Himalayas are receding faster than in any other part of the world and, if the present rate continues, a large number of them may disappear by 2035 because of climate change, warn Indian and foreign environmentalists and geologists.

The Himalayas have the largest concentration of glaciers outside the polar caps. That is why, they are called the

At geological time scales, the role of continental erosion in the organic carbon (OC) cycle is determined by the balance between recent OC burial and petrogenic OC oxidation. Evaluating its net effect on the concentration of carbon dioxide and dioxygen in the atmosphere requires the fate of petrogenic OC to be assessed.

Increasing amount of soot, sulphates and other aerosol components in atmospheric brown clouds (ABCs) are causing major threats to the water and food security of Asia and have resulted in surface dimming, atmospheric solar heating and soot deposition in the Hindu Kush-Himalayan-Tibetan (HKHT) glaciers and snow packs.

Geography coupled with high levels of poverty and population density has rendered South Asia especially vulnerable to the impacts of climate change. The impacts of climate change in the form of higher temperatures, more variable precipitation, and more extreme weather events are already felt in South Asia.

Mountains are among the most fragile environments on earth but, at the same time, are also rich repositories of biodiversity and ecosystem services, and the sources of much of the water that sustains life on the planet.

The inventory and assessment of biodiversity resources have become essential for policy-making and management strategies as well as for developing and testing scientific hypotheses. There is an increasing need to compile mountain biodiversity databases and to make them available on-line.

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