In this post I set both UAH and GISS global temperature anomaly series to a common baseline period (1981-2010) and compare them. Even though the UAH series is satellite based and GISS series is station based, the series exhibit striking similarities.
In this previous post, I showed how to convert temperature anomaly time series from one baseline period to another period. I use this technique in this post to directly compare UAH (baseline 1981-2010) and GISS (baseline 1951-1980) series.
The offsets are as follows:
- UAH: -0.000978
- GISS: 0.34958
Since the UAH TLT 5.4 series is based on a 1981-2010 baseline, the offset is nearly zero (-0.00098 versus 0.0).
Users can reproduce my analysis on their own by downloading my CTS.csv file and applying the offsets to the UAH and GISS series.
Comparison of 1981-2010 Baseline Series
Here is a plot of UAH and GISS 12 month moving averages for 1979 to current: Click to Enlarge Continue reading