The lesson: garbage in = garbage out (or is it Federally funded scientists are trying to keep the gravy train going?)
"In November 2022, meteorologist Roy Spencer, Ph.D., a Principal Research Scientist at the University of Alabama in Huntsville, published a ground-breaking study demonstrating that 36 climate models used to guide national policy may have exaggerated “global warming” over the last 50 years by as much as 50 percent. Specifically, Dr. Spencer utilized “a relatively new global dataset of urbanization changes over the previous 40-year period, 1975-2014, based on Landsat data to determine the average effect urbanization has had on surface temperatures.”
Spencer devised a methodology “to compute the magnitude of the Urban Heat Island (UHI) effect on temperatures using the example of summertime early morning 09 UTC (early morning) Integrated Surface Database (ISD) hourly data (mostly from airports) over the period 1973-2022.” (“UTC” stands for Universal Time Coordinated, formally known as Greenwich Mean Time (GMT).) His goal was to compare “urbanization differences to temperature differences from closely spaced weather stations.” "
https://www.americanthinker.com/arti...l_warming.html
https://www.drroyspencer.com/2022/11...lt-up-dataset/