Sentences with phrase «counteracted by aerosol»
Expectations of decreases in large source regions such as China [195] may be counteracted by aerosol increases other places as global population continues to increase.
http://journals.plos.org/ Not exact matches
«It is widely understood that aerosols have a net cooling effect on climate, counteracting the warming caused by greenhouse gases.
However, a concerted effort to reduce non-CO2 forcings by methane, tropospheric ozone, other trace gases, and black soot might counteract the warming from a decline in reflective aerosols [54], [75].
Volcanoes are powerful sources of sulfate aerosols that counteract global warming by reflecting incoming solar radiation back into space.
Hansen's group estimates that aerosols probably counteract about half of the warming produced by man - made greenhouse gases, but he cautions that better measurements of these elusive particles are needed.
Mid-century involved CO2 - mediated warming counteracted by negative aerosol forcing, with perhaps a contribution from the chaotic component of the PDO.
They explain the pause as warming due to CO2, counteracted by cooling due to aerosols (see e.g. Table, p. 54 of the Technical Summary to AR5) and mysterious unknown forces («natural variability»).
However, a concerted effort to reduce non-CO2 forcings by methane, tropospheric ozone, other trace gases, and black soot might counteract the warming from a decline in reflective aerosols [54], [75].
If so, how would you reconcile this with global warming counteracted in the mid 20th century by NH aerosols?
Answer: The forcing of greenhouse gases is counteracted by about 1 Watt / m2 of aerosols, leaving us with 1.5 W / m2 or thereabouts, or less than half that of a doubling of CO2 (3.7 W / m2), and thermal inertia cuts that by half again for the high end sensitivities, and not much of a cut is required for the low end sensitivites (1.5 C times fraction of forcing 1.5 / 3.7 giving about 0.6 C).