CO2 forcing induces semi-direct effects with consequences for climate feedback interpretations

Details CO2 forcing induces semi-direct effects with consequences for climate feedback interpretations CO2 forcing induces semi-direct effects with consequences for climate feedback interpretations

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3504802a&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 4, CiteID L04802

Physics

22

Global Change: Atmosphere (0315, 0325), Atmospheric Processes: Clouds And Cloud Feedbacks, Global Change: Global Climate Models (3337, 4928), Atmospheric Processes: Radiative Processes

Scientific paper

Climate forcing and feedbacks are diagnosed from seven slab-ocean GCMs for 2 × CO2 using a regression method. Results are compared to those using conventional methodologies to derive a semi-direct forcing due to tropospheric adjustment, analogous to the semi-direct effect of absorbing aerosols. All models show a cloud semi-direct effect, indicating a rapid cloud response to CO2; cloud typically decreases, enhancing the warming. Similarly there is evidence of semi-direct effects from water-vapour, lapse-rate, ice and snow. Previous estimates of climate feedbacks are unlikely to have taken these semi-direct effects into account and so misinterpret processes as feedbacks that depend only on the forcing, but not the global surface temperature. We show that the actual cloud feedback is smaller than what previous methods suggest and that a significant part of the cloud response and the large spread between previous model estimates of cloud feedback is due to the semi-direct forcing.

Affiliated with

Also associated with

No associations

Rating

CO2 forcing induces semi-direct effects with consequences for climate feedback interpretations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with CO2 forcing induces semi-direct effects with consequences for climate feedback interpretations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CO2 forcing induces semi-direct effects with consequences for climate feedback interpretations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1321681