> How do you know? Can you provide links to some? http://data.giss.nasa.gov/gistemp/ http://data.giss.nasa.gov/gistemp/ http://www.ncdc.noaa.gov/oa/climate/gh

> How do you know? Can you provide links to some? http://data.giss.nasa.gov/gistemp/ http://data.giss.nasa.gov/gistemp/ http://www.ncdc.noaa.gov/oa/climate/ghcn-monthly/index.php http://www.ncdc.noaa.gov/oa/climate/ghcn-monthly/index.php I'm afraid I don't have time to document the circumstances under which they were collected or the people who did the work.