Making roads more reflective and thereby sending more sunlight back to space helps cool the planet, offsetting some of
the atmospheric warming caused by greenhouse gas emissions.
Because a cool ocean absorbs atmospheric heat more readily, that has partially offset
the atmospheric warming caused by greenhouse gases.
Not exact matches
Already,
atmospheric levels of carbon dioxide, the leading
greenhouse gas, are approaching 400 ppm, and at least the amount of
warming caused by that level is likely
by century's end.
The value of measuring
atmospheric temperatures globally becomes clear when we recall that the untested hypothesis behind global
warming projects that
greenhouse gas warming in the atmosphere will
cause the surface to
warm by 6 degrees Fahrenheit (with a probable error of plus or minus 3 degrees).
@Edim: There is a
greenhouse effect,
caused by the radiatively «inactive»
atmospheric gases (N2, O2), which can not radiate to space and therefore «
warm» the atmosphere
by insulating it from the cold of space.
There is a
greenhouse effect,
caused by the radiatively «inactive»
atmospheric gases (N2, O2), which can not radiate to space and therefore «
warm» the atmosphere
by insulating it from the cold of space.
We do not need models to anticipate that significant rises in
atmospheric CO2 concentrations harbor the potential to raise temperatures significantly (Fourier, 1824, Arrhenius, 1896), nor that the
warming will
cause more water to evaporate (confirmed
by satellite data), nor that the additional water will further
warm the climate, nor that this effect will be partially offset
by latent heat release in the troposphere (the «lapse - rate feedback»), nor that
greenhouse gas increases will
warm the troposphere but cool the stratosphere, while increases in solar intensity will
warm both — one can go on and on
Since water vapor is the most important
greenhouse gas, the growth in its concentration
caused by atmospheric warming exerts an additional forcing,
causing temperature to rise further.
(1) Because of a growing concern over the possible consequences of global
warming, which may be
caused in part
by increases in
atmospheric carbon dioxide (a major
greenhouse gas), and also because of the need for accurate estimates of carbon dioxide emissions, the Energy Information Administration (EIA) has developed factors for estimating the amount of carbon dioxide emitted as a result of U.S. coal consumption.
I can't find the context of the text fragment used as an example of the «minimizes» subset of Level 6 in Table 2 but the most likely reading of the fragment
by itself is that it assumes that humans are
causing atmospheric greenhouse gas concentrations to increase and that this is
causing or contributing to global
warming, so the fragment does say (or at least imply) something about human attribution.
The video begins
by accepting that CO2 acts as a
greenhouse gas and that increased
atmospheric concentrations can
cause some incremental
warming, on the order of magnitude of 1C per doubling of concentrations.