|Met Office Hadley Centre observations datasets|
|> Home > CRUTEM4 > Versions >|
A new version numbering scheme has been introduced with the most recent update of the CRUTEM4 dataset. The CRUTEM4 version numbers take the following format:
The uses of X, Y, Z and θ in the versioning scheme are as follows:
Changes to the CRUTEM4 code or data sources will result in an update of the CRUTEM4 version number.
Version numbers are not increased with each monthly update of the dataset. Information on changes to data in monthly updates is described through the use of field status flags.
Monthly updates to CRUTEM4 operate on a rolling 12 month update window running up to and including the most recent complete calendar month. These updates add station data for these months to the CRUTEM4 database from CLIMAT messages recieved over the Global Telecommunication System (GTS) and from Monthly Climatic Data for the World (MCDW) publications. Field status information is included in the CRUTEM4 field metadata to indicate whether or not monthly fields are liable to change in future updates.
Commercial and media enquiries
You can access the Met Office Customer Centre, any time of the day or night by phone, fax or e-mail. Trained staff will help you find the information or products that are right for you.
© Crown Copyright