Sensitivity of a coupled atmosphere-dynamic upper ocean GCM to variations of CO2, solar constant, and orbital forcing

Details Sensitivity of a coupled atmosphere-dynamic upper ocean GCM to variations of CO2, solar constant, and orbital forcing Sensitivity of a coupled atmosphere-dynamic upper ocean GCM to variations of CO2, solar constant, and orbital forcing

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.1599s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 15, p. 1599-1602

Physics

9

Atmospheric General Circulation Models, Carbon Dioxide Concentration, Earth Orbits, Ocean Dynamics, Solar Constant, Air Water Interactions, Atmospheric Composition, Periodic Variations

Scientific paper

Sensitivity of a coupled atmosphere-dynamic upper ocean general circulation model (GCM) to varying CO2, solar constant, and orbital forcing was examined. Response to atmospheric CO2 concentrations ranging from 100-3500 ppm is logarithmic at all latitudes and seasons, with highest sensitivity at high latitudes, during the winter season. Solar constant response is approximately linear over the range of values +2%, but the sensitivity at high latitudes is less than for equivalent CO2 forcing. Sensitivity to 'cold northern summer' orbital forcing, which occurred at the start of the last glacial cycle, is strongly affected by CO2. For CO2 at or below the present level, perennial snow cover in the northern hemisphere expands dramatically with 'cold summer' orbital forcing, but this effect becomes very small for CO2 levels in the range 410-460 ppm. This result suggests that the Quaternary 'ice age' mode of climatic behavior may have been initiated by an atmospheric CO2 decrease below a critical value, probably around 350-450 ppm.

Affiliated with

Also associated with

No associations

Rating

Sensitivity of a coupled atmosphere-dynamic upper ocean GCM to variations of CO2, solar constant, and orbital forcing 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 Sensitivity of a coupled atmosphere-dynamic upper ocean GCM to variations of CO2, solar constant, and orbital forcing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sensitivity of a coupled atmosphere-dynamic upper ocean GCM to variations of CO2, solar constant, and orbital forcing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1255093