Since both #aerosols and #clouds have decreased over #Europe, both would influence this brightening.
Using #MERRA-2 reanalysis, which assimilates #satellite-derived aerosols, we found that the fractional sensitivity of surface #shortwave radiation is 5 times higher for #clouds
Granted, we did this by solving a simple system of equations that assumes similar bulk sensitivities of the climate system to aerosols and clouds over both #Europe and #China.