Impact of evolving greenhouse gas forcing on the warming signal in regional climate model experiments.

ABSTRACT: Variations in the atmospheric concentrations of greenhouse gases (GHG) may not be included as external forcing when running regional climate models (RCMs); at least, this is a non-regulated, non-documented practice. Here we investigate the so far unexplored impact of considering the rising evolution of the CO2, CH4, and N2O atmospheric concentrations on near-surface air temperature (TAS) trends, for both the recent past and the near future, as simulated by a state-of-the-art RCM over Europe. The results show that the TAS trends are significantly affected by 1-2 K century-1, which under 1.5 °C global warming translates into a non-negligible impact of up to 1 K in the regional projections of TAS, similarly affecting projections for maximum and minimum temperatures. In some cases, these diffe

SUBMITTER: Jerez S 

PROVIDER: S-EPMC5880811 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature