Understanding Aerosol-Induced Climate Change Helps Future Climate Predictions

Scientists may have to understand the effect of aerosols in climate change to be able to forecast future weather conditions better, claims a recent NASA-led report issued by the U.S. Climate Change Science Program.

Titled "Atmospheric Aerosol Properties and Climate Impacts," it is the latest in a series of Climate Change Science Program reports that addresses various aspects of America’s highest priority climate research, observation and decision-support needs.

How We Personally Contribute to Climate Change With the Aerosols We Create
A group of scientists affiliated with the International Geosphere-Biosphere Programme (IGBP) have proposed a new framework to account more accurately for the effects of aerosols on

The study’s authors include scientists from NASA, the National Oceanic and Atmospheric Administration and the Department of Energy.

"The influence of aerosols on climate is not yet adequately taken into account in our computer predictions of climate," said Mian Chin, report coordinating lead author from NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

"An improved representation of aerosols in climate models is essential to more accurately predict the climate changes," Chin added.

Invisible Gases Form Most Organic Haze in Urban, Rural Areas: Study
A University of Colorado at Boulder study has claimed that invisible and reactive gases hovering over the Earth's surface, form the bulk of organic haze in both urban and rural areas.

Aerosols are suspended solid or liquid particles in the air that often are visible as dust, smoke and haze.

Aerosols come from a variety of natural and human processes. On a global basis, the bulk of aerosols originate from natural sources, mainly sea salt, dust and wildfires.

Dust Pollution in the Atmosphere may Trigger Tornadoes
Dust pollution in the atmosphere may trigger supercell thunderstorms into multiple tornadoes says a new research.

Human-produced aerosols arise primarily from a variety of combustion sources. They can be the dominant form of aerosol in and downwind of highly populated and industrialized regions, and in areas of intense agricultural burning.

Although Earth’s atmosphere consists primarily of gases, aerosols and clouds play significant roles in shaping conditions at the surface and in the lower atmosphere.

Sunscreen Covering Earth Becoming Thinner
A new study by the National Aeronautics and Space Administration (NASA) has revealed that the sunscreen of aerosols over the earth has been thinning.

Aerosols typically range in diameter from a few nanometers to a few tens of micrometers.

They exhibit a wide range of compositions and shapes, but aerosols between 0.05 and 10 micrometers in diameter dominate aerosols’ direct interaction with sunlight.

Aerosols also can produce changes in cloud properties and precipitation, which, in turn, affect climate.

The role of greenhouse gases in global warming is fairly well established, but the degree to which the cooling effect of human-produced aerosols offsets the warming is still inadequately understood.

The report states that scientists should strive to improve their understanding of aerosols’ climate influences with the goal of cutting that range of uncertainty by nearly two-thirds.

According to the report, to achieve the goal of reducing uncertainties in aerosol impacts on climate, an advanced, multi-disciplinary approach that integrates surface, aircraft, and space-based measurements with models will have to be developed.

Source-ANI
TAN/M