Scientific Perspectives on the Greenhouse Problem

action activity additional aerosols Annual anomalies areas atmosphere average billion brightness calculations carbon dioxide cause century climate change cloud amount cloud cover CO2 emissions coal Coast concentration consumption cooling cost decrease demand depend difference doubling earth economic efficiency electricity emissions energy energy efficiency estimate factor Fall Figure forecasts fuels future global warming greenhouse effect greenhouse gases greenhouse warming growth heat impact important improvements increase indicate initial Karl limit lower maximum mean measurements natural negative Northern Hemisphere observed occur ocean period plants positive possible precipitation predictions problem produced projected recent record reduce regions relative Research response result rise satellite scenario scientific season shows significant simulations solar Southern Spring Summer sunshine supply surface Table technologies temperature temperature range term tion trends United variability Winter