re: #814 LudwigVanQuixote

The assertion that there were no reliable thermometers before 1850 is a flat out lie. Once again, a blanket statement with no evidence to support it from an anti-science crank.

[Link: www.nap.edu…]

[Link: www.pnas.org…]

Read the science. Ignore the lies.

And… as new, updated temperature data was inserted in the 5 degrees by 5 degrees grid for any certain month/year of the Hadcrut3 database, did they…

1) Keep records of what the last temperature was.
2) Keep records of the actual location of where the temperature was recorded.

The 5 degree by 5 degree grids that divided the planet in the Hadcrut3 dataset are about the size of Nevada. It is very important to know the actual location, the source and the time/date of the temperature reading.

Do they have that information for all the grids, for all the months, for all the years from 1850 until 1999?