3. Caballero and Langen 2005

Caballero and Langen 2005

The dynamic range of poleward energy transport in an atmospheric general circulation model

#paper #energy_transport @Caballero @Langen

2017.08.18

Summary

• Reconcile the geological proxy includes global-mean surface temperature and weak equator-to-pole temperature gradient.
• With numerical simulations of those periods, which easily reproduce the proxy-inferred global-mean temperatures given a plausible increase in greenhouse gas concentrations, but fall far short of attaining the observed reduction in meridional gradient : “low gradient paradox”
• Atmospheric energy transport may takes important role on this but why does poleward heat transport play silent role in reducing meridional temperature gradient climate models?
• In the region with Tm > 15°C and DT < 30°C, the combined behavior of latent and dry static energy transports results in a total transport essentially independent of Tm. In this region, which contains the climates of the Late Cret ceous and Early Paleogene, increasing Tm cannot lead to decreased DT through greater heat transport. (Figure 1)