https://www.manhattancontrarian.com/blog/2019-8-17-the-greatest-scientific-fraud-of-all-time-part-xxv
I posted Part XXIV of this series just three days ago, on Wednesday August 14. The subject of that post was the “homogenization” of official historical temperature data, by which the keepers of our official temperature records from ground-based thermometers use the excuses of station moves and instrumentation changes to adjust earlier temperatures downward in order to create an artificial warming trend and make recent temperatures appear to be the warmest ever.
But why would anyone engage in such a stupid game? After all, it’s been a good 50 years since the network of ground-based thermometers was recognized as completely inadequate to the task of keeping track of the earth’s changing climate. This network just had too many unfixable issues that meant that its measurement accuracy was not nearly sufficient for the task at hand. The issues include things like poor coverage of most of the earth’s surface (e.g., the whole southern hemisphere), essentially no coverage of the poles or the oceans, urban heat island issues affecting many of the most important stations, poorly tracked station moves and instrumentation changes, and so forth. These many issues are reasons why the decision was made back in the 1970s to spend some serious money to create a far superior methodology to track not just temperature readings at randomly sited ground stations, but instead to track the bulk heat content of the entire lower troposphere. Since 1979 the U.S. government has spent several billion dollars to build, launch and operate a group of satellites with instrumentation called “microwave sounding units,” designed to measure true average worldwide temperatures of the lower troposphere. Thus, since 1979, the network of ground-based thermometers has been made obsolete. We now have the far more accurate satellite temperature record to guide us.
The satellite-based temperature record is calculated and reported each month by a group at the University of Alabama at Huntsville (UAH) headed by Drs. John Christy and Roy Spencer. On August 1, UAH reported what they call the temperature “anomaly” for the lower troposphere for July: +0.38 deg C (measured as a departure from the average temperature from 1981 to 2010). That made July a relatively warm month, but it was down substantially from the anomaly of +0.47 deg C in June, let alone from the record anomaly of +0.88 deg C that occurred three and a half years ago in January 2016. The drop from the January 2016 record anomaly was a full 0.5 deg C, which is a very large drop considering that the record upward departure from the 1981-2010 mean is only +0.88 deg C.