First they told us that dramatic cooling during the 1960s and 1970s was leading to an ice age. Then they told us that it was due to aerosols. Now they tell us that it never happened, and their records showed it all along. They just imagined the whole thing until this week.
Or maybe the man made aerosols just hung out over the oceans and didn’t affect land temperatures?
And isn’t it fascinating that with every iteration the past becomes a bit colder and the present becomes a bit warmer.
Must be something in the Al-Gore-rhythms
They admit guessing at the results and fiddling with the data:
Q. If SATs cannot be measured, how are SAT maps created ?
A. This can only be done with the help of computer models, the same models that are used to create the daily weather forecasts. We may start out the model with the few observed data that are available and fill in the rest with guesses (also called extrapolations) and then let the model run long enough so that the initial guesses no longer matter, but not too long in order to avoid that the inaccuracies of the model become relevant. This may be done starting from conditions from many years, so that the average (called a ‘climatology’) hopefully represents a typical map for the particular month or day of the year.
http://data.giss.nasa.gov/gistemp/abs_temp.html
And they all use NOAA as their source for temperature records.
I do especially like the way they ended their graph in the early part of this decade. But, history revisionism is something they excel in. Next up, they’ll tell us how thermometers really did exist all over South America and Africa in the 1890s.
Well, another weather/climate monitoring satellite is going up:
http://www.universetoday.com/90333/next-generation-climate-and-weather-satellite-ready-for-friday-launch/
Wonder what will come of it.
Re-entry in 14 hours and counting….
“Or maybe the man made aerosols just hung out over the oceans and didn’t affect land temperatures?”
That’s more true than you think if I read the tone correctly as sarcasm.
The ocean warms by sunlight and cools largely through evaporation. Land warms by sunlight but cools largely through radiation.
Greenhouse gases help the surface stay warm by retarding radiative cooling. Aerosols help the surface stay cool by reflecting sunlight before it reaches the surface.
So aerosols will work to cool both land and water equally well but greenhouses gases are far more effective at insulating land surfaces against heat loss than they are the ocean surface.
It’s really cool how all the facts line up and make sense once you are working with the correct hypothesis.
This is actually a good sign, perhaps the scientists of 2050 will all speak of global cooling, then in 2090 global warming again and so on and so forth in a perpetual cycle