Hi, I'm Tim.
In my professional life I'm a research scientist, and I and my colleagues actually get to use this sort of weather data when it comes to "reanalysing" the state of the atmosphere and ocean in the 20th Century. Not sure how long it will be before this particular data finds it's way into the datasets I use, but I'm sure it will at some stage. So a big thanks to you all!!
Due to work and family, I won't be contributing as much as many of you to the inputting, but I thought I'd like to try my hand, and it's always interesting to see some original sources.