Nothing you say changes the fact that the data is "corrected". Nothing you say changes the facts that the data is not being made available, and that the factor of "correction" and the formulae are not forthcoming.
There should be no need to "correct" historical data. Historical data is fact and if you are to determine trends the raw data is sufficient. If historical data is being "corrected" I find the conclusion already suspect.

Not all models show a marked increase in temperature. Even a single model does not show only increases in temperature. Why then is that the only thing we are supposed to hear or believe? It is harder to believe when it is revealed that the prognostications are in fact the worst case scenario, not the "average" to which you refer.

Average temperatures in the past have been much higher than now, yet the planet seemed to be able to fix itself, presence of man notwithstanding!

Then there is the constant tinkering with the historical record. Along with the fact that the reports are not in concrete terms but in differences of an average. Since the average can be selected, or the "correction" is the determined average, the data over, or under, said average is again suspect.

Quote Originally Posted by Thorne View Post
The models are developed from historical data, then run through historical scenarios to insure they match up with actual climate conditions. If they do not, then the programs are "tinkered with" to correct any variations. The data remains the same, only the models are changed. Once they do an accurate job of "post-dicting" climate conditions, they are allowed to run into the future. There are many different models, using many different data sets. All are showing a marked average increase in global temperature. There will be some warming trends and some cooling trends, lasting several years sometimes. But the low temperatures in the cooling trends are not as low as they have been historical, and the high temps in the warming trends are slightly higher than historical. The average temperature is definitely rising.

And the raw data is there to be studied, if you want it. The problem is, the whole damned thing is so complex that, without a lot of study and experience the average person cannot easily understand that data. Even among the experts, the interpretation of the data and the conclusions gathered from the models can vary significantly. But the trend is still upwards.

As for the current supposed cooling trend, remember that the sun has just been going through a sunspot minima period, one which lasted longer than expected. Now, it seems, the sunspots are beginning to return, which will probably mean another warming trend. With a peak temperature higher than the last trend's peak.