Aerosols

India's climate research agenda: 2030 and beyond

The Intergovernmental Panel on Climate Change (IPCC), Assessment Report 6 (AR6), stated that the recent climate change is “widespread, rapid, intensifying and unprecedented in thousands of years.” It is further noted: “Climate change is already affecting every region on Earth in multiple ways. The changes we experience will increase with …

Air pollution is necessary

Eli Kintisch SULFATE AEROSOLS Aerosol pollution has helped keep the planet cool by blocking sunlight Unlike carbon dioxide, which persists in the atmosphere for centuries, aerosols last for a week at most. So cutting them would probably accelerate global warming rapidly what would happen if nations instituted all existing pollution …

Commercial cooking elevates hazardous pollutants in the environment

Scientists in Minnesota are reporting that commercial cooking is a surprisingly large source of a range of air pollutants that could pose risks to human health and the environment. Deborah Gross, Ph.D., pointed out that commercial food cooking is a known source of air pollutants, including gases and tiny solid …

Hot in the hills: Shimla 10C above normal

Shimla: Though summer is yet to set in officially, Shimla has recorded a sharp rise in maximum temperature, which shot eight to 10 degrees above normal. On Saturday, the hill station recorded an all-time high of 25.7 degree celsius this time of the year. It has triggered concern among environmentalists, …

Climate change assessment and decelerating food production trends in India

Climate change assessment and decelerating food production trends in India: a paper presented by Dr. Krishna Kumar, IITM, Pune at National climate research conference, IIT Delhi, March 5-6, 2010.

Can we trust the Ocean-Atmosphere coupled models to predict future climate accurately?

Can we trust the Ocean-Atmosphere coupled models to predict future climate accurately?: a paper presented by Prof. J Srinivasan IISc, Bangalore at National climate research conference, IIT Delhi, March 5-6, 2010.

Aerosol chemistry and climate change and public health at an Indo Gangetic Plain in India

This document contains the presentation by Ranjit Kumar on Aerosol chemistry and climate change and public health at an Indo Gangetic Plain in India, presented at National climate research conference, IIT Delhi, March 5-6, 2010. Major irritants of the environment are global warming, climate change, ozone depletion, acid rain, visibility …

Role of cloud-aerosol interactions in climate change

This document contains the presentation on the role of cloud-aerosol interactions in climate change by G. Pandithurai, IITM, Pune at National climate research conference, IIT Delhi, March 5-6, 2010. Aerosol indirect effects (AIE) are generally referred to any aerosol induced modification of cloud microphysical properties (first AIE), cloud life time …

Measurement and analysis of toxic metals concentration influencing continental atmosphere

This document contains the presentation by Tarun Gupta, Abhishek Chakraborty on toxic metals influencing continental atmosphere, presented at National climate research conference, IIT Delhi, March 5-6, 2010. Atmospheric aerosols stimulate strong research interest primarily due to their importance in influencing climate over both land and water, and causing deleterious effects …

Aerosols: Integrating an understanding of source-receptor relationships with climate forcing on regional scales

Aerosols: Integrating an understanding of source-receptor relationships with climate forcing on regional scales a paper presented by Chandra Venkataraman at National climate research conference, IIT Delhi, March 5-6, 2010.

Amazon forests did not green?up during the 2005 drought

A drought that happens once in a hundred years had little negative or positive effect on the Amazon rainforest according to this study led by Arindam Samanta from Boston University. Its results are different from 2007 IPCC report which stated that 40 percent of the Amazon rainforest was threatened by …

Better burning, better breathing: Improving health with cleaner cook stoves

Every morning and evening, millions of women in India spend an hour or two cooking their rice, dal, curry, and roti or other flat bread. Most will prepare their meals over a smoky, 3-stone open fire or a traditional clay or brick cook stove called a chulha. The stoves burn …

Magnetic susceptibility distribution in the soils of Pune Metropolitan Region: implications to soil magnetometry of anthropogeni

Based on established linkages between ferrimagnetism and heavy metal concentration of anthropogenic particulates, we attempt here to delineate pollutant residing domains and study the role of surface runoff and wind circulations over its redistribution in the Pune Metropolitan Region (PMR) in Maharashtra.

Asian pollution delays inevitable warming

The grey, sulphur-laden skies overlying parts of Asia have a bright side — they reflect sunlight back into space, moderating temperatures on the ground. Scientists are now exploring how and where pollution from power plants could offset, for a time, the greenhouse warming of the carbon dioxide they emit.

High and dry

Soot-coated glaciers on a melting spree. Climate scientists have tagged the Himalayan glaciers to disappear by the end of this century. The Tibetan glaciers are in a bigger hurry to disappear, apparently. Courtesy: soot or black carbon that is increasing the sunlight-absorption capacity of the snow. With its strategic location …

Impact of agriculture crop residue burning on atmospheric aerosol loading – a study over Punjab State, India

The present study deals with the impact of agriculture crop residue burning on aerosol properties during October 206 and 2007 over Punjab state, India using ground based measurements and multi-satellite data.

Research on global sun block needed now

Geoengineering studies of solar-radiation management should begin urgently, argue David W. Keith, Edward Parson and M. Granger Morgan

The real holes in climate science

Like any other field, research on climate change has some fundamental gaps, although not the ones typically claimed by sceptics. Quirin Schiermeier takes a hard look at some of the biggest problem areas.

During wind and rain

Scientists around the world have been confused by the role of wind and pollutants on rainfall. But now they have a model. It shows that wind shear—a change in wind speed and direction between different altitudes—plays a crucial role in the whole process. A research team from Pacific Northwest National …

Black soot and the survival of Tibetan glaciers

We find evidence that black soot aerosols deposited on Tibetan glaciers have been a significant contributing factor to observed rapid glacier retreat. Reduced black soot emissions, in addition to reduced greenhouse gases, may be required to avoid demise of Himalayan glaciers and retain the benefits of glaciers for seasonal fresh …

Black soot and the survival of Tibetan glaciers

We find evidence that black soot aerosols deposited on Tibetan glaciers have been a significant contributing factor to observed rapid glacier retreat. Reduced black soot emissions, in addition to reduced greenhouse gases, may be required to avoid demise of Himalayan glaciers and retain the benefits of glaciers for seasonal fresh …

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