They remove a small subset of the data, and if their model can accurately replicate the missing pieces, the scientists may be on the right track. (sciencedaily.com)
The Berkeley researchers developed their own statistical methods so that they could use data from virtually all of the temperature stations on land — some 39,000 in all — whereas the other research groups relied on subsets of data from several thousand sites to build their records. (scientificamerican.com)
In addition, a limited subset of data from DIN SAR is available as a PDF file on the FAA.Gov public website. (transportation.gov)