MSG Correction for
McIDAS-X for Win7 2013.1

The McIDAS-X for Win7 2013.1 tar file available on the 2013.1 Software and Instructions page was updated 28 January 2013 at 21:37 UTC to include updated versions of subroutines msgtaget2.for and msgtutil.for. The updated subroutines contain a fix to give more precise temperature values for Meteosat-10 bands 4 through 11, and to support MSG Rapid Scan Service files. Note that the temperature errors were generally small (up to +/-0.3 K were found during testing), and thus were not noticeable when viewing the displayed data, though they may be important for users who need precise values.

Only those sites that maintain servers containing Meteosat-10 HRIT data or users with HRIT data on their local workstation and need the precise IR temperature values and/or need the ability to use local MSG Rapid Scan Service files need to install this update. All other users can skip this update.

Users who downloaded and installed McIDAS-X 2013.1 on their Windows 7 workstation prior to 28 January 2013 21:37 UTC and need the precise IR temperature values and/or the ability to use local MSG Rapid Scan Service files will need to install the updated msgtadir and msgtaget binaries (built with the updated msgtaget2.for and msgtutil.for) by completing the instructions below.

Complete the following steps to download and install the updated msgtadir and msgtaget binaries (built with the updated msgtaget2.for and msgtutil.for) for McIDAS-X for Win7 version 2013.1.

1. Log on to the workstation as mcidas.
2. Change to the bin directory for 2013.1 and make a backup copy of the existing msgtadir and msgtaget binaries.
   Type: cd  ~mcidas/mcidas2013.1/bin
   Type: cp  msgtadir msgtadir.bak     (note: do not use mv; you must use cp)
   Type: cp  msgtaget msgtaget.bak     (note: do not use mv; you must use cp)
3. Download (e.g., right-click and select Save option) the following files to the ~mcidas/mcidas2013.1/bin directory on your McIDAS-X for Win7 workstation.

   File name	Size	Description
   msgtadir	168 KB	updated to give more precise Meteosat-10 IR temperature values and to support MSG Rapid Scan Service files
   msgtaget	172 KB	updated to give more precise Meteosat-10 IR temperature values and to support MSG Rapid Scan Service files

By downloading (or copying) msgtadir and msgtaget into the ~mcidas/mcidas2013.1/bin directory, you replace the previous (broken) versions of the binaries with the corrected ones. Their links to the ~mcidas/bin directory are automatically updated so the corrected versions are used.