If convection decreases, says Moore, the Gulf Stream may weaken, thereby
reducing the warming of the atmosphere, in comparison to today.
With
the reduced warming of the atmosphere will the warming of the oceans slow down or is the CO2 concentration warming the oceans independently of the air temperature?
Not exact matches
«Our results indicate that a wide range
of POPs have been remobilized into the Arctic
atmosphere over the past two decades as a result
of climate change, confirming that Arctic
warming could undermine global efforts to
reduce environmental and human exposure to these toxic chemicals,» write the scientists, whose analysis was published yesterday in the journal Nature Climate Change.
Warmer conditions
reduce the solubility
of oxygen from the
atmosphere and increase oxygen consumption because the biological respiration processes are boosted.
As the Arctic summers are getting
warmer we may see an acceleration
of global
warming, because
reduced sea ice in the Arctic will remove less CO2 from the
atmosphere, Danish scientists report.
Limited growth in a drier climate has restricted the amount
of carbon that new trees can lock away from the
atmosphere,
reducing their ability to counteract the effects
of global
warming.
Indeed, conventional wisdom held that higher levels
of aerosol pollution in the
atmosphere should cool the earth's climate because aerosols can increase cloudiness; they not only
reduce precipitation, which raises the water content in clouds, but they also increase the size
of the individual water droplets, which in turn causes more
warming sunlight to be reflected back into space.
They suggest that forecasts
of the global
warming likely to result from doubling the amount
of carbon dioxide in the
atmosphere may, therefore, have to be
reduced by about half.
There are global efforts to
reduce the man - made emission
of GHG's that likely contribute to global
warming by trapping the sun's heat inside the
atmosphere, including emission standards and financial penalties on excess emissions.
One high - profile target, he says, should be
reducing emissions
of tiny soot particles, known as black carbon, that don't last long in the
atmosphere but have an outsize impact on
warming.
So even without concerns about the
warming effect
of carbon pollution in Earth's
atmosphere, the Paris agreement goes a long way toward
reducing harmful air pollution worldwide.
For instance, if nothing is done to
reduce the amount
of heat - trapping gasses, such as carbon dioxide, in the
atmosphere, Earth could be 5 to 15 degrees Fahrenheit (3 to 8 degrees Celsius)
warmer by the end
of century, said Sivan Kartha, a senior scientist at the Stockholm Environment Institute.
The mechanism for
reducing anthropogenic global
warming, initiated through radiative forcing
of greenhouse gases, is to stop emissions and
reduce their concentration in the
atmosphere to levels which do not stimulate carbon feedbacks.
Furthermore, even if the net meridional overturning circulation, which is broader than just the Gulf Stream, slows, that doesn't mean that the poleward heat transport will be
reduced, as a
warmer wetter
atmosphere can also transport a great deal
of heat (latent heat) to poleward regions, which seems to be what has been happening.
i.e. the water vapour will tend to carry heat (in the form
of warmed air and latent heat) higher in the
atmosphere,
reducing surface
warming.
Increased
warming of the cool skin layer (via increased greenhouse gases) lowers its temperature gradient (that is the temperature difference between the top and bottom
of the layer), and this
reduces the rate at which heat flows out
of the ocean to the
atmosphere.
Adding further greenhouse gases to the
atmosphere warms the ocean cool skin layer, which in turn
reduces the amount
of heat flowing out
of the ocean.
[1] CO2 absorbs IR, is the main GHG, human emissions are increasing its concentration in the
atmosphere, raising temperatures globally; the second GHG, water vapor, exists in equilibrium with water / ice, would precipitate out if not for the CO2, so acts as a feedback; since the oceans cover so much
of the planet, water is a large positive feedback; melting snow and ice as the
atmosphere warms decreases albedo, another positive feedback, biased toward the poles, which gives larger polar
warming than the global average; decreasing the temperature gradient from the equator to the poles is
reducing the driving forces for the jetstream; the jetstream's meanders are increasing in amplitude and slowing, just like the lower Missippi River where its driving gradient decreases; the larger slower meanders increase the amplitude and duration
of blocking highs, increasing drought and extreme temperatures — and 30,000 + Europeans and 5,000 plus Russians die, and the US corn crop, Russian wheat crop, and Aussie wildland fire protection fails — or extreme rainfall floods the US, France, Pakistan, Thailand (driving up prices for disk drives — hows that for unexpected adverse impacts from AGW?)
So anthropogenic land use changes (which are strongly biased toward deforestation and desertification) tend to raise the temperature observed at thermometer shelters around the world, while at the same time they tend to
reduce the amount
of energy available to
warm the
atmosphere above the surface.
Reliance on global CCS into deep wells to
reduce GHG emissions into the
atmosphere and effectively addressing the human - induced sources and consequences
of global
warming and climate change is pure «Greenwash.»
Warming of the oceans leads to increased vertical stratification (decreased mixing between the different levels in the oceans), which would
reduce CO2 uptake, in effect,
reducing the oceanic volume available to CO2 absorption from the
atmosphere.
The increased troposphere - surface
warming from more CO2 is best thought
of by the rate
of IR escape out the top
of the
atmosphere, which is
reduced for a given temperature.
At the same time it will help mitigate and solve catastrophic consequences
of human - induced global
warming and climate change by
reducing greenhouse gas emissions into the
atmosphere.
Temperature tends to respond so that, depending on optical properties, LW emission will tend to
reduce the vertical differential heating by cooling
warmer parts more than cooler parts (for the surface and
atmosphere); also (not significant within the
atmosphere and ocean in general, but significant at the interface betwen the surface and the air, and also significant (in part due to the small heat fluxes involved, viscosity in the crust and somewhat in the mantle (where there are thick boundary layers with superadiabatic lapse rates) and thermal conductivity
of the core) in parts
of the Earth's interior) temperature changes will cause conduction / diffusion
of heat that partly balances the differential heating.
... interestingly in the grey gas case with no solar heating
of the stratosphere, increasing the optical thickness
of the
atmosphere would result in an initial cooling
of and in the vicinity
of the skin layer (
reduced OLR), and an initial radiative
warming of the air just above the surface (increased backradiation)--
of course, the first
of those dissappears at full equilibrium.
Simple physics dictates that with less sea ice there is magnified
warming of the Arctic due to powerful albedo feedback; this in turn
reduces the equator to pole temperature gradient which slows the jet stream winds causing them to become more meridional; this combined with 4 % more water vapor in the
atmosphere (compared to 3 decades ago) is leading to much more extremes in weather.
In the report released today by the Intergovernmental Panel on Climate Change, the world's top scientists warned that global
warming is unequivocally man - made and will become irreversible if we do not act now to
reduce the amount
of carbon emissions released into the
atmosphere.
IF cool deep sea water were mixed relentlessly with surface water by some engineering method --(e.g. lots
of wave operated pumps and 800m pipes) could that enouromous cool reservoir
of water a) mitigate the thermal expansion
of the oceans because
of the differential in thermal expansion
of cold and
warm water, and b) cool the
atmosphere enough to
reduce the other wise expected effects
of global
warming?
Re 346 ziarra, again: «The radiation from a cooler upper
atmosphere can
warm the surface because it counteracts the even greater amount
of radiation in the other direction, thus
reducing the net flow
of heat.»
That will make it more difficult to stabilise carbon dioxide (CO2) levels in the
atmosphere and to
reduce the risks
of extreme forms
of global
warming.
Mauritsen said the
warming of the upper ocean and the
atmosphere during the summer through
reduced cooling around Europe results in the stronger transport
of heat into the Arctic, which is actually «pristine» in general.
In order to effectively address global
warming, we must significantly
reduce the amount
of heat - trapping emissions we are putting into the
atmosphere.
On longer term, this effect is countered by the increase
of CO2 in the
atmosphere: more CO2 in the
atmosphere means a higher pCO2, thus a smaller difference in pCO2 over the
warm oceans, thus
reducing the outgassing
of CO2.
Of course, even if we ceased to put carbon in the atmosphere tomorrow, the warming would continue until the various carbon sinks had time to reduce atmospheric carbon so we can't even stop the warming of the oceans if we wanted t
Of course, even if we ceased to put carbon in the
atmosphere tomorrow, the
warming would continue until the various carbon sinks had time to
reduce atmospheric carbon so we can't even stop the
warming of the oceans if we wanted t
of the oceans if we wanted to.
This could happen because SRM masks the
warming caused by greenhouse gases rather than
reducing the concentration
of gases in the
atmosphere.
To
reduce global
warming by 2100 by 0.5 degC will require the removal
of a calculated 1,020 Gt CO2 from the
atmosphere (to arrive at 535 ppmv by 2100 instead
of the «base case»
of 600 ppmv).
Mr. Clinton says his goal is to
reduce the threat in coming decades
of droughts, coastal floods, and famine from global
warming — a
warming of the
atmosphere caused by rising concentrations
of gases, especially carbon dioxide, released when fuels and forests are burned.
One is the part
of the emission from the
atmosphere that
reduces with added GHGs, and the other is the Planck term from the surface and
atmosphere that increases with
warming.
It has been recorded since the 1960s in terms
of both rising ocean temperature and rising acidity, both
of which
reduce the capacity to remove CO2 from the
atmosphere, thereby advancing AGW and further ocean
warming.
seems to be... «the
warming lower troposphere acts a governor or control valve,
reducing the rate
of net heat flux between ocean and
atmosphere»
More clouds both drastically
reduce energy input from the sun and simply slow release
of what energy there is trapped in the lower troposphere, but the long term effect would be a fall in average temperature because
of the significantly
reduced input power but the
atmosphere's ability to cool is aided by air current circulation whereby the
warmer air rises above those low clouds and that infra - red is more easily re-emitted into space, whereby the low clouds now block that re-emission from hitting the ground again to any significant degree.
He said his study showed the 2C target set in Paris was «still just about achievable» but limiting
warming to 1.5 C in the long term could only be achieved by «overshooting» and then somehow
reducing the temperature using futuristic technology, such as artificial trees which suck CO2 out
of the
atmosphere.
The sun
warms the ocean, and the
atmosphere (and sea ice)
reduces the net flow
of energy from ocean to space.
Do you deny that increasing the mass, by coupling to sub-surface material by conduction, or a (transparent)
atmosphere by convection, would
reduce the rate
of change
of temperature, both during the cooling phase, and in the
warming phase when the illumination is switched on again?
AGW climate scientists seem to ignore that while the earth's surface may be
warming, our
atmosphere above 10,000 ft. above MSL is a refrigerator that can take water vapor scavenged from the vast oceans on earth (which are also a formidable heat sink), lift it to cold zones in the
atmosphere by convective physical processes, chill it (removing vast amounts
of heat from the
atmosphere) or freeze it, (removing even more vast amounts
of heat from the
atmosphere) drop it on land and oceans as rain, sleet or snow, moisturizing and cooling the soil, cooling the oceans and building polar ice caps and even more importantly, increasing the albedo
of the earth, with a critical negative feedback determining how much
of the sun's energy is reflected back into space, changing the moment
of inertia
of the earth by removing water mass from equatorial latitudes and transporting this water vapor mass to the poles,
reducing the earth's spin axis moment
of inertia and speeding up its spin rate, etc..
It does magnify the night - time greenhouse effect by
warming the clouds or the higher levels
of the
atmosphere, thus increasing the amount
of heat radiated back to the surface; though the overall effect is to
reduce net planetary greenhouse
warming by limiting the temperature gradient.
This greater plant growth means more carbon is stored in the increasing biomass, so it was previously thought the greening would result in more carbon dioxide being taken up from the
atmosphere, thus helping to
reduce the rate
of global
warming.
Thus (in my opinion) both the greenhouse gasses and the
atmosphere itself act in partnership to
reduce the cooling
of the surface (erroniously called
warming, but you know what I mean).
It is worth noting that, although these technologies could theoretically lower global
warming, they do not aim to
reduce the amount
of greenhouse gases in the
atmosphere and, therefore, would not be able to directly address problems such as ocean acidification.
RKS: there is a GHE because by
reducing surface emissivity, GHGs increase the impedance for the transfer to the
atmosphere and space
of the 160 W / m ^ 2 average solar
warming of the surface.