I've always said that I'm never a fan of politics. I give each side of every argument a fair shake regardless of my personal opinions of beliefs. Its my open-mindedness to other information and data that has allowed me to change my opinion on many issues based on newly acquired knowledge. Politics--as with every hot-button issue--clouds the landscape.
In climate science, the data is the foundation of the field. This analysis focuses on the two datasets that is often sited and dissected as to what is more valid and reliable. One represents the ground temperatures. The other represents the atmospheric temperatures measured from satellites.
The first set is from the Goddard Institute of Space Studies (GISS). This dataset goes back more than 100 years of record keeping. The second originates from the Advanced Microwave Sounding Unit (AMSU-A) flying on NASA’s Aqua satellite. Satellites like the AMSU have been measuring the atmosphere since 1979.
The first graph is from GISS. NASA and NOAA use this dataset in determining long term trends commonly sited. The data is from 1880 to the present. I noted the satellite era on the right with two solid red vertical lines.
The second graph is from the UAH website showing the satellite data since 1979. I added the average temperature rise in red. All data is available on the web for verification.
Furthermore, can the increase be described best using naturally occurring cycles or does the increase in Carbon Dioxide have the most effect?
So what dataset is right?