Royal Dutch Meteorological Institute; Ministery Of Infrastructure And The Environment

Climate Services
Historical Climate
The KNMI-program 'HISKLIM' (HIStorical CLIMate) has the objective of the program is to make historical climate data physically accessible for both land and sea, from sources in the Dutch language, with the highest possible temporal resolution and of the best possible quality.

The project started at the beginning of the year 2000 with a term of 5 to 10 years. In addition, the continuity of existing long time series must be guaranteed and the original and digitized data must be kept safely and effectively. 

Availability of historical data
Much attention will be paid to making available historical climate data in a user friendly way (data-infrastructure). Besides, a large amount of observations will be digitized that now slumber in the archives.

Subsequently, these observations must be quality controlled, together with existing, but not yet quality controlled, digitized observations. The climate time series of the five principal stations (Den Helder/De Kooy, Groningen/Eelde, De Bilt, Vlissingen en Maastricht/Beek) will be homogenized on the highest possible temporal resolution.

Furthermore, attention will be paid to data management, archiving and protection of both digitized and non-digitized observations. Procedures will be formulated to guarantee the continuity of climate time series.