Sentences with phrase «black carbon aerosols»

Menon, S., J.E. Hansen, L. Nazarenko, and Y. Luo, 2002: Climate effects of black carbon aerosols in China and India.

New research reveals insights into how black carbon aerosols impact cloud formation RENO — It is widely known that black carbon, or soot, aerosol particles emitted... Read more

Removing black carbon aerosols from China and India should have a cooling effect.

Soot particles, also known as black carbon aerosols, affect climate by absorbing sunlight, which warms the surrounding air and limits the amount of solar radiation that reaches the ground.

Climate forcing perturbations such as increasing the solar constant, increasing black carbon aerosols (tropospheric), and decreasing surface albedo, low cloud cover, sea salt aerosol, will (on global average) warm the ground and troposphere and will also warm the stratosphere.

In the past, numerous studies have identified black carbon aerosols emitted from combustion of fossil fuels and residential biofuels as the dominant light - absorbing aerosol over South Asia.

Black carbon aerosol strongly absorbs solar radiation.

Image at right: Natural and anthropogenic biomass burning, such as forest fires and the burning of fields in the tropics, produce black carbon aerosols, i.e., soot.

Black carbon aerosol deposited on snow has reduced the surface albedo, producing an associated RF of +0.1 [± 0.1] W m — 2, with a low level of scientific understanding.

If in turn the NH is warmed, for instance due to the direct forcing by black carbon aerosols, the ITCZ is found to shift northward (Chung and Seinfeld, 2005).

To find out if these inaccuracies could be mitigated, a team of scientists decided to use the Japanese K computer to perform fine - grained simulations of how black carbon aerosols are transported to and distributed in the Arctic region.

By using smaller grids — with spacing of just a few kilometers rather than several tens of kilometers as in conventional current models — they were able to show that they could more realistically model the amount of black carbon aerosols, mitigating the underestimation in more coarse - grained models.

Below are links to a revised presentation that was developed as background information for a «Black carbon aerosols in the Himalaya» press conference held at the 2009 AGU meeting in San Francisco.

Novakov, T., V. Ramanathan, J.E. Hansen, T.W. Kirchstetter, M. Sato, J.E. Sinton, and J.A. Satahye, 2003: Large historical changes of fossil - fuel black carbon aerosols.

Black carbon aerosols from forest fires, for example, tend to suppress cloud formation by warming the air and making tiny water droplets evaporate.

Overall, the new measures would lower global anthropogenic emissions of methane by 50 % and of black carbon aerosols, also known as soot, by 80 %.

Black carbon aerosols — particles of carbon that rise into the atmosphere when biomass, agricultural waste, and fossil fuels are burned in an incomplete way — are important for understanding climate change, as they absorb sunlight, leading to higher atmospheric temperatures, and can also coat Arctic snow with a darker layer, reducing its reflectivity and leading to increased melting.

One study found that an observed decrease in Asian monsoon rainfall could only be simulated in response to black carbon aerosol, although conclusions regarding the monsoon response to anthropogenic forcing differ.

Look up «black carbon aerosols» — it's the same thing.

However, detection and attribution analyses based on climate simulations that include these forcings, (e.g., Stott et al., 2006b), continue to detect a significant anthropogenic influence in 20th - century temperature observations even though the near - surface patterns of response to black carbon aerosols and sulphate aerosols could be so similar at large spatial scales (although opposite in sign) that detection analyses may be unable to distinguish between them (Jones et al., 2005).

Additional trace gases include methane (CH4, currently about 3.7 PgC) and carbon monoxide (CO, around 0.2 PgC), with still smaller amounts of hydrocarbons, black carbon aerosols and other organic compounds.

These researchers reviewed the scientific understanding of how black carbon aerosols (aka soot) warm the earth's climate.

FIGURE 4 - 1 Annual mean aerosol optical depth predicted by an aerosol chemical transport model due to sulfate, mineral dust, sea salt, and organic and black carbon aerosols.