Physics
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3721704c&link_type=abstract
Geophysical Research Letters, Volume 37, Issue 21, CiteID L21704
Physics
5
Global Change: Atmosphere (0315, 0325), Atmospheric Processes: Clouds And Aerosols, Global Change: Remote Sensing (1855), Atmospheric Processes: Radiative Processes, Atmospheric Processes: Remote Sensing
Scientific paper
Solar radiation at the Earth surface has increased over land and ocean since about 1990 (‘global brightening’). An analysis of various global (ocean only) aerosol and (global) cloud data sets from geostationary and polar orbiting satellites is performed to determine whether changes in these quantities have occurred in accordance with ‘global brightening’, and to analyse the global distribution of these changes. Change-point detection and trend analysis are employed in the analysis. In a period from the mid-1980s to the mid-2000s, aerosol optical depth is found to have started declining in the early 1990s, while cloud data sets do not agree on trends. Ångström exponent data seem to suggest changes in pollution.
Cermak Jan
Heidinger Andrew K.
Knutti Reto
Mishchenko Michael I.
Wild Martin
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