Sentences with phrase «gcm sensitivity studies»

GCM sensitivity studies (Boucher and Anderson, 1995) and column calculations (Nemesure et al., 1995) show that the radiative forcing is a strong function of relative humidity but relatively insensitive to chemical composition.

Not exact matches

The Hansen et al study (2004) on target atmospheric CO2 and climate sensitivity is quite clear on this topic: equilibrium responses would double the GCM - based estimates, with very little to be said about transient effects.

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.

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 featured the incorrect Spencer and Christie analysis, a comparison with a GCM simulation done with steady 1 % CO2 increase and no aerosol forcint (meant as a sensitivity study, not a forecast!)

Since none of the four models considered by the Mediterranean study consistently out - performed the others in simulating present - day climate, the researchers combined their results to produce a single composite scenario for each climate variable.2 To prevent the GCM with the greatest sensitivity from dominating the scenarios, they first had to standardise the model results.

The projection that was actually closest to the temps was Scenario C though (that was the sensitivity study with a drastic reduction of C02 emissions), so we accomplished by doing nothing what Hansen's 1988 GCM claimed we'd accomplish by huge reductions of CO2 emissions...

Contrary to Schlesinger's result, the majority of state - of - the - art four - dimensional «general circulation models» (GCMs)- the kind used in the Trenberth and Fasullo study - estimate the climate sensitivity is closer to 3 degrees C.

The central conclusion of this study is that to disregard the low values of effective climate sensitivity (≈ 1 °C) given by observations on the grounds that they do not agree with the larger values of equilibrium, or effective, climate sensitivity given by GCMs, while the GCMs themselves do not properly represent the observed value of the tropical radiative response coefficient, is a standpoint that needs to be reconsidered.

Grenfell, J.L., D.T. Shindell, and V. Grewe, 2003: Sensitivity studies of oxidative changes in the troposphere in 2100 using the GISS GCM.