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NOAA, January 1998. For land and ocean surfaces combined, the average global temperature of the calendar year 1907 is 0·50ºC below the average global temperature of 16·50ºC for the thirty calendar years from 1961 to 1990, such that the annual global temperature of 1907 is 16·00ºC, which is the lowest annual global temperature for any calendar year from 1900 to 1997.
NOAA, January 2017. For land and ocean surfaces combined, the average global temperature of the calendar year 2016 is 0·94ºC above the average global temperature of 13·9ºC for the one-hundred calendar years from 1901 to 2000, such that the annual global temperature of 2016 is 14·84ºC, which is the highest annual global temperature for any calendar year from 1880 to 2016.

Friday, 4 August 2017

1878 and 1879. HadCrut4.

Three claims for the “global historical surface temperature anomalies” of the January-to-December calendar years 1878 and 1879 as per HadCrut4 version 4·0·0·0.

1st claim.   The global temperature anomaly of 1878 is between A and B.
2nd claim.  The global temperature anomaly of 1878 is between C and D.
3rd claim.   The global temperature anomaly of 1878 is between E and F.

A = 0·82(±0)ºC more than the global temperature anomaly of 1879.
B = 0·29(±0)ºC less than the global temperature anomaly of 1879.
C = 0·56(±0)ºC more than the global temperature anomaly of 1879.
D = 0·04(±0)ºC less than the global temperature anomaly of 1879.
E = 0·16(±0)ºC more than the global temperature anomaly of 1879.
F = 0·17(±0)ºC less than the global temperature anomaly of 1879.

The monthly series entails the 1st claim. The annual series entails the 2nd claim. The “decadally smoothed” annual series entails the 3rd claim. Which claims are true? Which claims are false? Which claims are neither true nor false?  Alternative link for version 4·0·0·0. 

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