time scales 2
over the past 100k years the temperature of earth has been pretty flat except the most recent 10k years which are anomalously warm. over the past 10k years there's a clear cooling trend. over the past 1000 years it's been pretty flat. over the past 150 years it's definitely been getting warming. over the past 20 years, warmer. though we're starting to have a lower confidence level of that assertion. over a couple years, no one can say. and anyone who does is blowing smoke. and anyone who expects to be able to is a pumpkin head. year to year variation in temperature is huge compared to the size of the climate change changes we are looking for. you won't be able to see them in the data with any reasonable confidence level for many years. unless of course they're catastrophic. which is predicted by no one outside of hollywood. ;->