Not exact matches
But
as water vapor becomes present in the atmosphere, ozone
levels drop.
We call this the Charney climate sensitivity, because it is essentially the case considered by Charney (1979), in which
water vapor, clouds and sea ice were allowed to change in response to climate change, but GHG (greenhouse gas) amounts, ice sheet area, sea
level and vegetation distributions were taken
as specified boundary conditions.
Precipitation rate was used in the calculation rate not because of the latent energy in the
water vapor, but because the precipitation rate was treated
as proportional to the rate of transfer of air (with
water vapor mixed in) from the surface to the upper cloud
level; and the fraction of each kilogram of air that was
water vapor was treated
as constant.
This is just one of the many «interesting» weather events that we will all have to get used to in the future,
as level of
water vapor continue to increase in the warming atmosphere.
Warming must occur below the tropopause to increase the net LW flux out of the tropopause to balance the tropopause -
level forcing; there is some feedback at that point
as the stratosphere is «forced» by the fraction of that increase which it absorbs, and a fraction of that is transfered back to the tropopause
level — for an optically thick stratosphere that could be significant, but I think it may be minor for the Earth
as it is (while CO2 optical thickness of the stratosphere alone is large near the center of the band, most of the wavelengths in which the stratosphere is not transparent have a more moderate optical thickness on the order of 1 (mainly from stratospheric
water vapor; stratospheric ozone makes a contribution over a narrow wavelength band, reaching somewhat larger optical thickness than stratospheric
water vapor)(in the limit of an optically thin stratosphere at most wavelengths where the stratosphere is not transparent, changes in the net flux out of the stratosphere caused by stratospheric warming or cooling will tend to be evenly split between upward at TOA and downward at the tropopause; with greater optically thickness over a larger fraction of optically - significant wavelengths, the distribution of warming or cooling within the stratosphere will affect how such a change is distributed, and it would even be possible for stratospheric adjustment to have opposite effects on the downward flux at the tropopause and the upward flux at TOA).
But
as we got into autumn, the upper
level westerlies really picked up in strength, and you could see the tops of incipient TCs getting strongly sheared in the satellite images, with the
water vapor blown aloft to the east of the cyclone resembling the trial left behind a comet.
However, to support the assertion that global warming is responsible for a great deal of damage from such events, it is sufficient to show that such events have the «signature» of global warming — for example, that specific global warming - related factors such
as abnormally high sea surface temperatures, elevated
water vapor levels, and altered jet stream patterns contributed to making Hurricane Sandy what it was — even if those factors can not be precisely quantified.
How is it that the AGW enthusiasts attribute such a
water vapor contribution to CH4 rather then the mixing of the Tropopause and Stratospheric
water vapor in a similar action
as to the boundary layer temperature change at the Stratospheric and Mesospheric
level?
Rather than break up low
level clouds, skeptics see the
water vapor adding to the low, thick clouds (such
as stratocumulus) which primarily reflect incoming solar radiation back into space.
I can certainly see that SOME CO2
level would do that, but everything I have read so far about Antarctic says that in a somewhat warmer climate, which we will have in Antarctica soon, Antarctic
as a whole will get more snowfall, hence more retention of ice, because warmer air holds more
water vapor, even if the increase in warmth is merely from minus 40 C to minus 35 C.
Disputes within climate science concern the nature and magnitude of feedback processes involving clouds and
water vapor, uncertainties about the rate at which the oceans take up heat and carbon dioxide, the effects of air pollution, and the nature and importance of climate change effects such
as rising sea
level, increasing acidity of the ocean, and the incidence of weather hazards such
as floods, droughts, storms, and heat waves.
When the convective processes of the atmosphere remove enough
water vapor from the oceans to drop sea
levels and build polar ice caps,
as has happened many times before, the top 35 meters of the oceans where climate models assume the only thermal mixing occurs, must heat up cold ocean
water that comes from depths below the original 35 meter depth, removing vast more amounts of heat from the earth's surface and atmosphere.
As if sweltering heat weren't bad enough, Europeans also suffered through a higher - than - normal number of days with dangerous smog levels that year.6 Smog — with ground - level ozone as the main component — forms when sunlight reacts with chemicals such as volatile organic compounds, carbon monoxide, nitrogen oxides, and water vapo
As if sweltering heat weren't bad enough, Europeans also suffered through a higher - than - normal number of days with dangerous smog
levels that year.6 Smog — with ground -
level ozone
as the main component — forms when sunlight reacts with chemicals such as volatile organic compounds, carbon monoxide, nitrogen oxides, and water vapo
as the main component — forms when sunlight reacts with chemicals such
as volatile organic compounds, carbon monoxide, nitrogen oxides, and water vapo
as volatile organic compounds, carbon monoxide, nitrogen oxides, and
water vapor.
As more water vapor enters the atmosphere, that in turn absorbs more SW radiation, and, as this recent MIT study has shown, we might actually see that we have a seemingly paradoxical effect of the bulk of the warming then being in the SW, even as net LW actually increases with increasing GH gas level
As more
water vapor enters the atmosphere, that in turn absorbs more SW radiation, and,
as this recent MIT study has shown, we might actually see that we have a seemingly paradoxical effect of the bulk of the warming then being in the SW, even as net LW actually increases with increasing GH gas level
as this recent MIT study has shown, we might actually see that we have a seemingly paradoxical effect of the bulk of the warming then being in the SW, even
as net LW actually increases with increasing GH gas level
as net LW actually increases with increasing GH gas
levels:
3 Further complicating the response of the different atmospheric
levels to increases in greenhouse gases are other processes such
as those associated with changes in the concentration and distribution of atmospheric
water vapor and clouds.
At that
level, the
water vapor condenses into clouds
as shown in Figure 3».
If we were to increase the
level of
water vapor in the atmosphere and leave everything else unchanged, the
water vapor would fairly quickly condense out
as rain, snow, frost or dew and there would be no lasting effect on global temperatures Carbon dioxide comes second after
water vapor and its concentration in the atmosphere is heavily affected by burning of fossil fuels.
In the report (PDF), which recants many of the popular skeptical arguments regarding climate change, Schwartz claims that [Al] «Gore's brand of over-the-top climate hysteria has nothing to do with reality,» and that «Most of the greenhouse effect is natural and is due to
water vapor naturally in the atmosphere,
as well
as natural
levels of carbon dioxide (CO2), methane, and a few other greenhouse gases.»
Aerosols are also essential for cloud formation in the troposphere: They act
as condensation nuclei which even in the presence of low
levels of
water vapor do enable droplets to form.
For the summer monsoon season in southeast Arizona, meteorologists track the transport of low - altitude
water vapor, which is defined
as altitudes below 700 millibars or 3,000 m (9,900 ft) in elevation above mean sea
level.
The new cars emit only
water vapor, which
as the cars gain in popularity promises to significantly reduce the
level of greenhouse gasses that are released into the atmosphere.
It's kind of like considering
water vapor as a gas expanding into more space that it is given when it is warmer because the condensation
level rises higher.
Precipitation rate was used in the calculation rate not because of the latent energy in the
water vapor, but because the precipitation rate was treated
as proportional to the rate of transfer of air (with
water vapor mixed in) from the surface to the upper cloud
level; and the fraction of each kilogram of air that was
water vapor was treated
as constant.
The saturated greenhouse effect is supported by 50 years of TIGR data i.e. radiosonde soundings of the troposphere which reveal that
as CO2
level rises
water vapor content of the atmosphere falls and thus the total GHG content of the atmosphere remains constant.
In light of trends showing a likely 3 °C or more global temperature rise by the end of this century (a figure that could become much higher if all feedback processes, such
as changes of sea ice and
water vapor, are taken into account) that could result in sea
level rises ranging from 20 to 59 cm (again a conservative estimation), Hansen believes it is critical for scientists in the field to speak out about the consequences and rebuke the spin offered by pundits who «have denigrated suggestions that business -
as - usual greenhouse gas emissions may cause a sea
level rise of the order of meters.»
The
level of scientific understanding of radiative forcing is ranked by the AR4 (Table 2.11)
as high only for the long - lived greenhouse gases, but is ranked
as low for solar irradiance, aerosol effects, stratospheric
water vapor from CH4, and jet contrails.
Hurricanes can be thought of, to a first approximation,
as a heat engine; obtaining its heat input from the warm, humid air over the tropical ocean, and releasing this heat through the condensation of
water vapor into
water droplets in deep thunderstorms of the eyewall and rainbands, then giving off a cold exhaust in the upper
levels of the troposphere (~ 12 km / 8 mi up).
But one thing all aerosols have in common is that if you are going to balance the greenhouse effect due to increasing
levels of carbon dioxide, you must keep increasing the amount of aerosols — which will then increase the negative effects associated with them — including diminished agricultural output and climatic side - effects —
as they will not evenly counteract the effects of increased carbon dioxide and its
water vapor feedback due to evaporation.