Sentences with phrase «for effective climate sensitivity»

Values are shown for the effective climate sensitivity, the net heat flux across the ocean surface multiplied by the ocean fraction and the global mean temperature change (TCR).

The IPCC's Fifth Assessment Report shows a range of figures for effective climate sensitivity — the amount of warming that can be expected from a doubling of carbon dioxide levels.

Not exact matches

Where (equilibrium / effective) climate sensitivity (S) is the only parameter being estimated, and the estimation method works directly from the observed variables (e.g., by regression, as in Forster and Gregory, 2006, or mean estimation, as in Gregory et al, 2002) over the instrumental period, then the JP for S will be almost of the form 1 / S ^ 2.

My main criticism of their study is that they have calculated effective climate sensitivity (their ICS) on a basis which is wrong for ICS in GCMs; their basis is also inconsistent with observationally - based estimates of ICS.

Depending on meridional heat transport, when freezing temperatures reach deep enough towards low - latitudes, the ice - albedo feedback can become so effective that climate sensitivity becomes infinite and even negative (implying unstable equilibrium for any «ice - line» (latitude marking the edge of ice) between the equator and some other latitude).

My main criticism of their study is that they have calculated effective climate sensitivity (their ICS) on a basis which is wrong for ICS in GCMs; their basis is also inconsistent with observationally - based estimates of ICS.

It is possible that effective climate sensitivity increases over time (ignoring, as for equilibrium sensitivity, ice sheet and other slow feedbacks), but there is currently no model - independent reason to think that it does so.

The «flaw» of low - ECS climate model studies may not be so much in aerosols, the NASA study suggests, as the effective radiative forcing scenario (with high climate sensitivity) is accompanied with relatively low value for aerosol efficacy:

Under «effective radiative forcing» 20th century observational studies match complex models and paleoclimatology's best estimates for CO2 climate sensitivity.

The paper's results show the best (median) estimates and «likely» (17 — 83 % probability) ranges for equilibrium / effective climate sensitivity (ECS) and transient climate response (TCR) given in the Lewis & Crok report to have been conservative.

For climate sensitivity the data are limited and have large errors, and are non-linearly related to sensitivity (and to ocean effective diffusivity, often estimated alonside sensitivity).

Where (equilibrium / effective) climate sensitivity (S) is the only parameter being estimated, and the estimation method works directly from the observed variables (e.g., by regression, as in Forster and Gregory, 2006, or mean estimation, as in Gregory et al, 2002) over the instrumental period, then the JP for S will be almost of the form 1 / S ^ 2.

The effective climate sensitivities around the time of CO2 doubling (average for the years 61 to 80), when the signal is strongest, agree reasonably well with the mixed - layer equilibrium climate sensitivities given in Figure 9.20.

Stipulating, of course, that adaptation might be a more cost - effective private policy for you, even if climate sensitivity ends up to be above the modal estimate.

The lower value — which conforms rather more closely with mainstream thinking than the higher value yields an effective climate sensitivity of ca 1.5 deg K for a doubling of CO2, which gets fairly close to ZDM estimates using historical forcing, temperature and ocean heat data.»

I have, incidentally, found using a multilayer diffusive ocean model that there is a near complete identity in the path of the model surface temperature response to a step forcing, for the better part of a century, over a wide range of equilibrium climate sensitivities if effective ocean diffusivity is varied to compensate.

When zero - intercept regressions are used for estimation, the transient efficacy of Historical iRF is then 1.02, and the equilibrium efficacy is also 1.02 (1.09 with ΔQ divided by 0.86), based on an effective climate sensitivity of 2.0 °C for the model.

[8] I estimate GISS - E2 - R's effective climate sensitivity applicable to the historical period as 1.9 °C and its ERF F2xCO2 as 4.5 Wm − 2, implying a climate feedback parameter of 2.37 Wm − 2 K − 1, based on a standard Gregory plot regression of (ΔF − ΔN) on ΔT for 35 years following an abrupt quadrupling of CO2 concentration.

For equilibrium efficacies, I show estimates both from the raw data (save for iRF), and with the ocean heat uptake ΔQ divided by 0.86 to estimate the full TOA imbalance ΔN and the GISS - E2 - R equilibrium climate sensitivity of 2.3 °C replaced by its effective climate sensitivity, taken as 2.0 For equilibrium efficacies, I show estimates both from the raw data (save for iRF), and with the ocean heat uptake ΔQ divided by 0.86 to estimate the full TOA imbalance ΔN and the GISS - E2 - R equilibrium climate sensitivity of 2.3 °C replaced by its effective climate sensitivity, taken as 2.0 for iRF), and with the ocean heat uptake ΔQ divided by 0.86 to estimate the full TOA imbalance ΔN and the GISS - E2 - R equilibrium climate sensitivity of 2.3 °C replaced by its effective climate sensitivity, taken as 2.0 °C.