Proof? There is no proof. There is a huge amount of evidence. You won't have enough proof until the end of the century to convince governments to take decisive action. If we were dealing with just a bunch of temperature studies by climatologists, the whole issue could be dismissed but we aren't. We're seeing supporting evidence from oceanologists, botanists, zoologists, geophysicists, and glaciologists from around world. Loss of biodiversity, decline in polar bears, shrinking arctic sea ice, melting glaciers, rise in acidifying of oceans, thinning ice, rising sea levels, coral bleaching, shifting wildlife habitat are just few of hundreds of studies that provide supporting evidence that the climate is rapidly changing.
Of course the opposition will dismiss all the evidence as a great left wing conspiracy. NASA, NOAA, National Science Foundation, National Academy of Science, 32 national science academies, and 75 out of 79 climate scientists, have got it all wrong.
Feel free to show us evidence that is not tainted and doesn't involve a computer model.
Here are few articles summarizing hundreds of climate and earth science related scientific research projects.
Abrupt climate change
Antarctic Cold Reversal
Antarctic oscillation
Arctic Climate Impact Assessment
Arctic shrinkage
Atmospheric circulation
Attribution of recent climate change
Bio-energy with carbon capture and storage
Broad Spectrum Revolution
Callendar effect
Bio-geoengineering
Catastrophic climate change
Clathrate gun hypothesis
Climate change and agriculture
Climate cycle
Cloud reflectivity enhancement
Cool tropics paradox
Coral bleaching
Dendroclimatology
East Antarctic Ice Sheet
Effects of climate change on marine mammals
Effect of climate change on plant biodiversity
Effects of global warming on Australia
Effects of global warming on India
Global dimming
Greenhouse effect
Holocene Climatic Optimum
Keeling Curve
Long-term effects of global warming
Milankovitch cycles
North Atlantic Deep Water
North Atlantic oscillation
Ocean acidification
Ocean anoxia
Ozone depletion
Pacific decadal oscillation
Paleoclimate Modelling Intercomparison Project
Polar amplification
Quasi-biennial oscillation
Radiative forcing
Regional effects of global warming
Retreat of glaciers since 1850
Runaway climate change
Satellite temperature measurements
Sea level rise
Table of Historic and Prehistoric Climate Indicators
Temperature record of the past 1000 years
Temperature record since 1880
Thermohaline circulation
Stratospheric sulfur aerosols
West Antarctic Ice Sheet
World climate research programme
Index of climate change articles - Wikipedia, the free encyclopedia