Trends in Global Marine Cloudiness and Anthropogenic Sulfur

摘要: Abstract A statistical analysis using published data on the global distribution of total cloud cover and type amounts over ocean, reduced from Comprehensive Ocean–Atmosphere Data Set (COADS), shows a significant positive trend (4.2% increase 1930 baseline) in oceanic amount period between 1981. The for Northern Hemisphere (5.8% ) was twice that Southern (2.9% ), more consistent 30-yr ( 1952–1981 show change 1952 base) 1.5% globe, 2.3% Hemisphere, 1.2% Hemisphere. also greatest altocumulus altostratus clouds this most pronounced at midlatitudes (30°–50°N). pattern variations appear to be accord with temporal geographic S02 emissions. It is hypothesized sulfate par...