Temperature proxy from CO2(population factor 14.703)
Taking into account the CO2 thermometer of Ahlbeck 

and the world population CO2 relationship of Idso
pop vs. [CO2] (Idso) Using US census data for world population http://www.census.gov/ipc/www/worldhis.html http://www.census.gov/ipc/www/worldpop.html and the TRENDS data for CO2 concentration (mauna loa and smoothed DSS) http://cdiac.esd.ornl.gov/ftp/trends/co2/lawdome.combined.dat http://cdiac.esd.ornl.gov/ftp/maunaloa-co2/maunaloa.co2 led me to the generation of a natural CO2 concentration graph Using a Vostok ice core CO2 response to temperature of 9.838298 ppm/degC http://cdiac.esd.ornl.gov/trends/temp/vostok/jouz_tem.htm http://cdiac.esd.ornl.gov/trends/co2/vostok.htm Quick and dirty approach: Vostok ice core: minco2 183.9 ppm maxco2 299.5 ppm mintemp -8.49 degC maxtemp 3.26 degC temprange 11.75 degC co2range 115.6 ppm response 9.838298 ppm/degC led me to the temperature reconstruction of the past millenium. Hans Erren
co2 vs. time
world population vs. time
co2 vs. population larger than 1 billion
co2 vs. population
Natural CO2 (Idso Population factor 16.022 )
Natural CO2 (population factor 14.703)
Temperature proxy from CO2(population factor 14.703)
source data for the graphs:

zipped in Excel 5.0/95 format

zipped in Excel 2000 format

this page: http://hanserren.cwhoutwijk.nl/co2/thermom.html homepage: http://hanserren.cwhoutwijk.nl
Page updated 14 March 2005