Monday 10 September 2018

April 1880's elusive gobal surface air temperature anomaly.

According to GISTEMP:-

On the 23rd of June 2006, the global surface air temperature anomaly for April 1880 was -0.15 degrees centigrade.

On the 9th of September 2018, the global surface air temperarture anomaly for April 1880 was -0.60 degrees centigrade.

The global surface air temperature anomaly for April 1880 differs from +75 degrees centigrade by what number of degrees centigrade?

According to NOAA.

CLAIM 1.
NOAA, January 1998. The average
global surface temperature of the calendar year 1907 is 0·50ºC below the average global surface temperature of 16·50ºC for the thirty calendar years from 1961 to 1990, such that the annual global surface temperature of 1907 is 16·00ºC, which is the lowest annual global surface temperature for any calendar year from 1900 to 1997.

CLAIM 2.

NOAA, January 2017. The average global surface temperature of the calendar year 2016 is 0·94ºC above the average surface global temperature of 13·9ºC for the one-hundred calendar years from 1901 to 2000, such that the annual global surface temperature of 2016 is 14·84ºC, which is the highest annual global surface temperature for any calendar year from 1880 to 2016.

So far, nobody has verified which one of the following five options is the case:-

Option 1. Claim 1 is true, and Claim 2 is true.
Option 2. Claim 1 is true, and Claim 2 is not true.
Option 3. Claim 1 is not true, and Claim 2 is true.
Option 4. Claim 1 is not true, and Claim 2 is not true.
Option 5. None of the above four options is the case.

Until someone verifies which one of these options is case, it is anyone's guess as to which one of them is the case.

Subsequently, NOAA has alleged that:-

Claim 3. January 2018. The average global surface temperature of the calendar year 2017 is 0·84ºC above the average global surface temperature of 13·9ºC for the one hundred calendar years from 1901 to 2000, such that the average global surface temperature of 2017 is 14·74ºC, which is the third highest annual global surface temperature for any calendar from 1880 to 2017.