Sentences with phrase «mean equilibrium surface»

Not exact matches

One common measure of climate sensitivity is the amount by which global mean surface temperature would change once the system has settled into a new equilibrium following a doubling of the pre-industrial CO2 concentration.

First let's define the «equilibrium climate sensitivity» as the «equilibrium change in global mean surface temperature following a doubling of the atmospheric (equivalent) CO2 concentration.

The fact that there is a natural greenhouse effect (that the atmosphere restricts the passage of long wave (LW) radiation from the Earth's surface to space) is easily deducible from i) the mean temperature of the surface (around 15ºC) and ii) knowing that the planet is roughly in radiative equilibrium.

In this case the CO2 concentration is instantaneously quadrupled and kept constant for 150 years of simulation, and both equilibrium climate sensitivity and RF are diagnosed from a linear fit of perturbations in global mean surface temperature to the instantaneous radiative imbalance at the TOA.

One common measure of climate sensitivity is the amount by which global mean surface temperature would change once the system has settled into a new equilibrium following a doubling of the pre-industrial CO2 concentration.

«Radiative forcing [RF] can be related through a linear relationship to the global mean equilibrium temperature change at the surface (delta Ts): delta Ts = lambda * RF, where lambda is the climate sensitivity parameter (e.g., Ramaswamy et al., 2001).

Actually, we're using the term climate sensitivity in the same sense, the equilibrium response of mean temp to the surface radiative forcing associated with CO2 doubling.

But I would suppose that equilibrium climate sensitivity [background] and even global mean surface temperature on a decadal scale could be better nailed down by model pruning and better ocean data.

3) Under the assumption of radiative equilibrium, it can be shown that the surface temperature of a planet would slightly and non linearily increase with the concentration of IR active gases (primarily H2O) if and only if radiation was the only mean for energy transfer.

«Their study shows that the time - dependent response of zonal mean surface temperature differs significantly from its equilibrium response particularly in those latitude belts, where the fraction of ocean - covered area is relatively large.

«the tendency to a radiative equilibrium means that the emitter with the higher surface temperature will loose energy due to a negative net radiation balance until this net radiation balance becomes zero.»

This also means that its surface temperature decreases and approaches the equilibrium temperature.

It clearly states that (a) emission of energy by radiation is accompanied with cooling of the surface (if no compensating changes prevent it), and (b) the tendency to a radiative equilibrium means that the emitter with the higher surface temperature will loose energy due to a negative net radiation balance until this net radiation balance becomes zero.

«Radiative forcing can be related through a linear relationship to the global mean equilibrium temperature change at the surface (ΔTs): ΔTs = λ RF, where λ is the climate sensitivity parameter (e.g., Ramaswamy et al., 2001).»

It is defined as the change in global mean surface temperature at equilibrium that is caused by a doubling of the atmospheric CO2 concentration.

''... the world today is on the verge of a level of global warming for which the equilibrium surface air temperature response on the ice sheets will exceed the global mean temperature increase by much more than a factor of two.»

equilibrium climate sensitivity refers to the equilibrium change in the annual mean global surface temperature following a doubling of the atmospheric equivalent carbon dioxide concentration.

[Equilibrium] climate sensitivity is defined as the increase in global mean surface temperature (GMST), once the ocean has reached equilibrium, resulting from a doubling of the equivalent atmospheric CO2 concentration, being the concentration of CO2 that would cause the same radiative forcing as the given mixture of CO2 and other forcing Equilibrium] climate sensitivity is defined as the increase in global mean surface temperature (GMST), once the ocean has reached equilibrium, resulting from a doubling of the equivalent atmospheric CO2 concentration, being the concentration of CO2 that would cause the same radiative forcing as the given mixture of CO2 and other forcing equilibrium, resulting from a doubling of the equivalent atmospheric CO2 concentration, being the concentration of CO2 that would cause the same radiative forcing as the given mixture of CO2 and other forcing components.

Sorry Mike, but as I pointed out above, you're ignoring the fast - equilibrium of Henry's law, which sets a fixed partitioning ratio of 1:50 for how much CO2 resides in the atmosphere and oceans respectively at the current mean surface temperature of 15C.

The Lewis and Curry paper said the best estimate for equilibrium climate sensitivity — the change in global mean surface temperature at equilibrium that is caused by a doubling of the atmospheric CO2 concentration — was 1.64 degrees.

seems to make any analysis with a linear dependence on global mean surface temperature suspect I suppose I should also add, for the purpose of analyzing equilibrium climate sensitivity — there may be other questions relating to short timescale processes where it may still be useful..

True, even if we wait for CO2 to double, the value of ΔT, given by the mean surface temperature change, will not be the equilibrium value.

The climate sensitivity parameter (units: °C (W m - 2)-1) refers to the equilibrium change in the annual mean global surface temperature following a unit change in radiative forcing.

Climate sensitivity - In Intergovernmental Panel on Climate Change (IPCC) reports, equilibrium climate sensitivity refers to the equilibrium change in the annual mean global surface temperature following a doubling of the atmospheric equivalent carbon dioxide concentration.

The surface is indeed warmer than the mean radiating temperature, but the higher temperatures are maintained by the effect of gravity which establishes the so - called «lapse rate» as an equilibrium state.

Also, it diagnoses only one measure of climate change (equilibrium response of global mean surface temperature).

ECS is the increase in the global annual mean surface temperature caused by an instantaneous doubling of the atmospheric concentration of CO2 relative to the pre-industrial level after the model relaxes to radiative equilibrium, while the TCR is the temperature increase averaged over 20 years centered on the time of doubling at a 1 % per year compounded increase.

None of this has any bearing whatsoever on mean planetary surface temperatures which are supported by the autonomous gravitationally induced temperature gradient which results from the process described in statements of the Second Law of Thermodynamics in which thermodynamic equilibrium evolves spontaneously.

It is broadly defined as the equilibrium global mean surface temperature change following a doubling of atmospheric CO2 concentration IPCC Fourth Assessment Report: Given that CO2 has been going up in a regular stepwise fashion for the last 30 years and there has been an initial jump in temps which was happily aligned with this with Mann like Climate sensitivity, Climate sensitivity might well have been 6.0.

Once radiative equilibrium is reestablished, this is a very helpful picture because we have just shifted the altitude higher from which the earth radiates but have kept the same temperature which means the surface must be warmer because it is connected by the lapse rate.

Because the temperature gradient in a planet's troposphere is the state of thermodynamic equilibrium which the Second Law of Thermodynamics says will evolve, the planet's supported surface temperature is autonomously warmer than its mean radiating temperature, so warm in fact on Earth that we need radiating gases (mostly water vapour) to reduce the gradient and thus cool the surface from a mean of about 300K to about 288K, this being confirmed by empirical evidence (as in the study in my book) which confirms with statistical significance that water vapour cools rather than warms, all these facts thus debunking the greenhouse conjecture.

Consider testing the climate sensitivity (CS, equilibrium change in mean surface temp in response to a doubling of CO2.)

Equilibrium Climate Sensitivity (ECS): the global mean surface warming necessary to balance the planetary energy budget after a doubling of atmospheric CO2.

Radiative forcing can be related through a linear relationship to the global mean equilibrium temperature change at the surface (ΔTs): ΔTs = λRF, where λ is the climate sensitivity parameter.

It is broadly defined as the equilibrium global mean surface temperature change following a doubling of atmospheric CO2concentration.»

The range most often quoted for the equilibrium global mean surface temperature response to a doubling of CO2 concentrations in the atmosphere is 1.5 °C to 4.5 °C.