"Yes, but you can be confused between the troposphere and the stratosphere,..." You are right... I had them mixed up. But it still leaves me puzzled that before the correction they explained the cooling as a valid result of global warming. And now they do a correction and and get a warming trend and explain that as valid.
"This is required for areas with sparse spatial coverage, for one thing."
Yes I know. And attempting to "regularize" data based on a simple weighting algorithm is not very accurate whatsoever.
But it still leaves me puzzled that before the correction they explained the cooling as a valid result of global warming. And now they do a correction and and get a warming trend and explain that as valid.The stratosphere is cooling and the lower troposphere is warming. Both are valid results of global warming. The critical necessity of lower troposphere warming is higher (for the theory) than stratospheric cooling. Go to the bottom of this page (you can read the rest if you want):
Description of MSU and AMSU Data Products
TLT is lower troposphere, TMT is mid-troposphere, TTS is troposphere/stratosphere, and TLS is lower stratosphere. And I hope you know what the big warming bump in 1991 in the TLS was caused by.
For benefit of others, here are the TLT and TLS plots:
And attempting to "regularize" data based on a simple weighting algorithm is not very accurate whatsoever.
I defer to your expertise.