Yet there is no doubt that research
into atmospheric aerosols is becoming increasingly important due to the effects that they can have on the global temperature of Earth, given that solar radiation is the main source of energy for Earth - Atmosphere system.
The results may help to explain discrepancies between observations and theories about how volatile organic compounds produced by vegetation are converted
into atmospheric aerosol — especially over forested regions.
Not exact matches
A key giveaway that
aerosols were behind the effect was that the lightning was most pronounced at times of the year when powerful
atmospheric convection currents form that can carry the
aerosol particles high
into the sky (Geophysical Research Letters, doi.org/cc7b).
India, another huge source of
atmospheric pollution, recently allowed European scientists to measure its high - level
aerosols, an experiment that also includes flights
into Nepal and Bangladesh.
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.
Plants release gases that, after
atmospheric oxidation, tend to stick to
aerosol particles, growing them
into the larger - sized particles that reflect sunlight and also serve as the basis for cloud droplets.
The relative
atmospheric concentrations of greenhouse gases as well as
aerosol and particulate content coupled with other climate information gives insight
into both the importance of these as drivers of temperature as well as how these drivers might couple in either a positive or negative feedback sense (Beckman and Mahoney, 1998).
Incoming energy, which comes primarily from the sun, is turned
into various forms of absorbed energy, depending on terrain and
atmospheric conditions such as clouds and
aerosol particles.
Vision PNNL will take a leadership role in the incorporation of
aerosols into climate models, through integrative research on
atmospheric aerosol interactions and through development of innovative instrumentation and measurement techniques.
When isoprene is in the presence of human - made sulfate particles it transforms
into atmospheric organic
aerosol particles.
However, calculation of the radiative forcing is again a job for the line - by - line codes that take
into account
atmospheric profiles of temperature, water vapour and
aerosols.
It is uncertain how a given emissions path converts
into atmospheric concentrations of the various radiatively active gases or
aerosols.
The study, published in Nature Geoscience found that humans have caused at least three - quarters (74 percent) of current warming, while also determining that warming has actually been slowed down by
atmospheric aerosols, including some pollutants, which reflect sunlight back
into space.
In collaboration with the Chinese Academy of Sciences, researchers provided molecular - level insights
into how alpha - pinene, a compound emitted in large quantities by pine trees, helps form new
atmospheric aerosols.
The relative
atmospheric concentrations of greenhouse gases as well as
aerosol and particulate content coupled with other climate information gives insight
into both the importance of these as drivers of temperature as well as how these drivers might couple in either a positive or negative feedback sense.
The relative
atmospheric concentrations of greenhouse gases as well as
aerosol and particulate content coupled with other climate information gives insight
into both the importance of these as drivers of temperature as well as how these drivers might couple in either a positive or negative feedback sense (Beckman and Mahoney, 1998).
A bit of digression, but can
atmospheric warming have «stalled» because of the enormous emission of reflective
aerosols from coal burning in China and India in the last decade or so?p class =» response» > [Response: In principle yes, but the evidence that more heat has gone
into the ocean is very strong.
I think it is really important to make that distinction - that there are a number of factors that influence the extent of Arctic sea ice, some of them of course associated with changes in the radiative forcing from the atmosphere, as a result of anthropogenic greenhouse gases and
aerosols, but also changes in the
atmospheric circulation and also the advection of heat
into or out of the Arctic by the ocean circulation.