A comparison of climate feedbacks in general circulation models View Full Text


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Article Info

DATE

2003-03-20

AUTHORS

R. Colman

ABSTRACT

. A comparison is performed for water vapour, cloud, albedo and lapse rate feedbacks taken from published results of 'offline' feedback calculations for general circulation models (GCMs) with mixed layer oceans performing 2 × CO2 and solar perturbation experiments. All feedbacks show substantial inter-model spread. The impact of uncertainties in feedbacks on climate sensitivity is discussed. A negative correlation is found between water vapour and lapse rate feedbacks, and also between longwave and shortwave components of the cloud feedback. The mean values of the feedbacks are compared with results derived from model intercomparisons which evaluated cloud forcing derived feedbacks under idealized climate forcing. Results are found to be comparable between the two approaches, after allowing for differences in experimental technique and diagnostic method. Recommendations are made for the future reporting of climate feedbacks. More... »

PAGES

865-873

References to SciGraph publications

  • 2001-11. Climate feedbacks in a general circulation model incorporating prognostic clouds in CLIMATE DYNAMICS
  • 2001-03. On the vertical extent of atmospheric feedbacks in CLIMATE DYNAMICS
  • 1996. Water Vapour and Cloud Feedback in the BMRC AGCM in CLIMATE SENSITIVITY TO RADIATIVE PERTURBATIONS
  • 1988. Quantitative Analysis of Feedbacks in Climate Model Simulations of CO2-Induced Warming in PHYSICALLY-BASED MODELLING AND SIMULATION OF CLIMATE AND CLIMATIC CHANGE
  • 1987-09. Cloud optical depth feedbacks and climate modelling in NATURE
  • 1997-10. Non-linear climate feedback analysis in an atmospheric general circulation model in CLIMATE DYNAMICS
  • 1996. Feedback Processes in the GFDL R30-14 Level General Circulation Model in CLIMATE SENSITIVITY TO RADIATIVE PERTURBATIONS
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    URI

    http://scigraph.springernature.com/pub.10.1007/s00382-003-0310-z

    DOI

    http://dx.doi.org/10.1007/s00382-003-0310-z

    DIMENSIONS

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