New PCIC Science Brief

PCIC is pleased to announce the release of its most recent Science Brief. This Science Brief covers a paper in Geophysical Research Letters by Guo et al. (2019), in which the authors use a technique known as "dynamical adjustment," to estimate the atmospheric circulation and thermodynamic contributions to observed precipitation over Eastern North America and Northern Eurasia over the 1920-2015 period. They find that the thermodynamic component, due to anthropogenic emissions, contributes to increases in precipitation in both regions. They then compare the spatial pattern and magnitude of these components to those obtained from global climate models driven with anthropogenic forcings. They find strong agreement between the thermodynamic components of precipitation obtained from the observational data and those obtained from climate model output.

Read the new Science Brief, here.