For the method by Meßer, version 2008 a sealing component for the conversion of the RVR-code (as of 07/2002) into the land use by Meßer is not required anymore.

For the transformation of land use data from the RVR-code or from other area codes such as CORINE land use data or ATKIS data into the attribute NMFN Meßer has developed a special calculation routine.

This conversion is based on dbase files which are stored during the installation of SPRING in the directory "C:\Users\Public\Documents\SPRING\Konfig” (Windows 7 or Windows Vista). This path varies depending on the operating system or the hard drive partitioning (e.g. on Windows XP: "C:\Documents and Settings\All Users\Documents\SPRING\Konfig").

Land use data in the format of RVR code are imported as structure data and assigned to the attribute KVRN.

Then, using Attributes Computation Groundwater recharge According to Meßer 2008 Determine land use from RVR code (KVRN NMFN) with the help of the dbase file the attribute NMFN, that is necessary for the calculation of the evapotranspiration and the direct runoff, is created.

If there are land use data in the ATKIS format, the proceeding is the same as for the RVR code, only that the data must be assigned to the attribute NATK.

 

Recharge rate calculation on soil water balance