GHCN Processor is a command-line tool that reads temperature data from the Global Historical Climatic Network (GHCN) database and produces an annual or monthly temperature series in CSV format for an arbitrary set of stations. Stations are filtered based on a simple EL expression passed to the tool. For example, you can select only stations that are in the Northern Hemisphere, in hilly and rural locations. You can also select stations that started reporting in a given year, and so on. The tool supports more than one method of grid partitioning, station combination, and can use both the adjusted data and raw unadjusted data.
Autoplot is an interactive browser for data on the Web. Give Autoplot a URL or a local file name and it creates a sensible plot of the data. Autoplot allows you to interactively browse data stored in ASCII, .cdf, netcdf, and many other formats. Autoplot was developed under the NASA Virtual Observatories for Heliophysics program in a collaborative effort among several institutions.