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#                                                                            #
#                 ATOVS and AVHRR Preprocessing Package (AAPP)               #
#                        Patch 8.7.1 Release Notes                           #
#                              12 February 2021                              #
#                                                                            #
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This is a patch to AAPP v8.7, to take account of:

- Bug in AVHRR navigation, which slightly affects IASI navigation
- Changes to the default URLs for sources of TLE bulletins (EUMETSAT and NASA)

To install:

1. Download AAPP_patch_8_7_1.tgz to a directory which we shall call $TAR.
2. Unpack AAPP v8.7 (see the 8.7 Release Note)
3. Type:

cd AAPP_8.7
tar -xf ${TAR}/AAPP_patch_8_7_1.tgz

4. Build AAPP as instructed in the 8.7 Release Note. If you have already built
8.7 without the patch then just type "make" to recompile avhrr-main.exe and edit
ATOVS_ENV8 manually as instructed in the following Forum posting:
https://nwp-saf.eumetsat.int/site/forums/topic/tles-from-eumetsat-change-of-server/
 

Detailed list of changes:
------------------------
M       metop-tools/src/bin/avhrr-main.c
Bug fix: dummy lines were being inserted wrongly at each APID change. Slight
impact on IASI navigation.

M       AAPP/src/navigation/bin/get_tle.ksh
M       configure
Update the default URLs and satellite lists for get_tle. Note that these are
listed in ATOVS_ENV8 which is created by "configure". The EUMETSAT "oiswww"
server has been retired.