According to:
http://www.cru.uea.ac.uk/cru/data/temperature/hadcrut3gl.txt
From 1850 to 1910, the highest average annual global temperature occurred in 1878, and was 15.023C or (32+27.041) = 59.041F.
In 1911 the average annual global temperature was at a low of 14.419C or (32+25.954) = 57.954F.
In 1998, the average annual global temperature was at a high of 15.546C or (32+27.983) = 59.983F.
The 1998 high was a 2.029 degrees Fahrenheit
increase since 1911, but only a 0.942 degree Fahrenheit
increase since 1878.
For the 11 month period January 2007 to November 2007, the average global temperature was 15.414C or (32+27.745) = 59.745F, a 0.238 degree Fahrenheit
decrease over the first 11 months of 2007.
MORE FACTS ABOUT GLOBAL WARMING AND THE SOURCES OF THESE FACTS
My conclusion that between 1911 and 1998 the 2.029 degrees Fahrenheit increase in the average annual temperature of the earth's surface (includes both the earth's liquid and solid surfaces) ,
is caused primarily by other than human beings, is based on ten facts:
FACTS:
(1) Sea water evaporats into the atmosphereis and is the primary source of CO2 in the atmosphere.
(2) As the sea water warms it evaporates at a greater rate into the atmosphere, and as the sea water cools it evaporates at a slower rate into the atmosphere.
(3) Whenever it rains in a region,
some of the CO2 in the atmosphere of that region is precipitated along with the H2O in the atmosphere of that region.
(4) The events described in (1), (2) and (3) have been occurring for millions of years.
(5) Since 1911 and up to 1998, the number of sunspots on the surface of the sun has been increasing.
(6) Since 1911 and up to 1998, the intensity of the radiations from the sun to the earth have been increasing.
(7) Since 1911 and up to 1998, the average annual temperature of the earth's surface has increased 2.029 degrees Fahrenheit.
(8) Since 1998, the number of sunspots on the surface of the sun has been decreasing.
(9) Since 1998, the intensity of the radiations from the sun to the earth have been decreasing.
(10) Since 1998 upto 12/1/2007, the average annual temperatures of the earth's surface have
decreased 0.238 degrees Fahrenheit).
SOURCES:
http://researchnews.osu.edu/archive/nowarm.htm
http://www.globalwarmingart.com/wiki/Image:Solar_Cycle_Variations_png
http://www.john-daly.com/carbon.htm
http://www.ace.mmu.ac.uk/Resources/gcc/2-5-3.html
http://www.ace.mmu.ac.uk/Resources/gcc/figures/2_3.html
http://www.cru.uea.ac.uk/cru/data/temperature/
http://www.cru.uea.ac.uk/
http://www.cru.uea.ac.uk/cru/data/temperature/hadcrut3gl.txt
http://upload.wikimedia.org/wikipedia/commons/6/60/Solar_Activity_Proxies.png
http://www.windows.ucar.edu/tour/link=/sun/images/sunspotnumbers_jpg_image.html
http://en.wikipedia.org/wiki/Solar_variation
http://upload.wikimedia.org/wikipedia/commons/6/60/Solar_Activity_Proxies.png
http://en.wikipedia.org/wiki/Image:Short_Instrumental_Temperature_Record.png
http://www.john-daly.com/carbon.htm
http://en.wikipedia.org/wiki/Henry%27s_law
http://www.psinvention.com/mixtures.htm