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#                                                                            #
#                               IASI OPS-LRS                                 #
#            Release Notes for version OPS_V7-0-AAPP-l-20130905              #
#                               13 Sept 2013                                 #
#                                                                            #
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1. Package contents
-------------------
The following files are included in this release (with file sizes in bytes):

  RELEASE_NOTE_OPS-LRS_V7-0.txt           3859 This release note
  OPS_V7.0-AAPP-l-20130905.tgz        38801700 IASI OPS-LRS package

To install and run the OPS-LRS package, users need to have first installed
AAPP v7.

Most users will also require the FFTW and XERCES libraries that are available on
the AAPP ftp site, though alternatives may be suitable on some systems. See
User Manual for details.


2. Purpose
----------
OPS-LRS processes MetOp IASI data from Level 0 to Level 1c. This version
incorporates the latest OPS updates from CNES, and is based on the OPS software
used operationally at EUMETSAT.

The Level 0 data are normally obtained by direct-readout AHRPT.

This release has the following changes compared with OPS_V6-0+p12:

1) Compatible with the latest IASI configuration files (BRD, GRD) as used in
the EUMETSAT core ground segment. Previously a special BRD was used for direct
readout processing.
2) Fixes an array out of bounds error which caused processing of some passes to
fail.
3) Some improvements related to running with AVHRR navigation.
4) Fixes other minor anomalies raised since V6-0.
 

3. Installation
---------------
a. Copy the tgz file to the directory where you want to install OPS-LRS.

b. Unpack it using the command
   tar -xvmzf OPS_V7.0-AAPP-l-20130905.tgz

   or if your system does not support the "-z" option in tar, use
   gunzip -c OPS_V7.0-AAPP-l-20130905.tgz | tar -xmf -
   
c. Configure and build OPS-LRS following the instructions in the OPS-LRS User
   Manual.
   
d. Download the following auxiliary files from the AAPP ftp site and place them
   in the appropriate directory on your system (as specified by environment
   variable DIR_IASICONFIG):

IASI_BRD_xx_M01_20130905140000Z_xxxxxxxxxxxxxxZ_20130905121856Z_IAST_0000000009
IASI_BRD_xx_M02_20130822141643Z_xxxxxxxxxxxxxxZ_20130822135729Z_IAST_0000000014
IASI_GRD_xx_M01_20130905140000Z_xxxxxxxxxxxxxxZ_20130905121902Z_IAST_0000000018
IASI_GRD_xx_M02_20130822141643Z_xxxxxxxxxxxxxxZ_20130822135732Z_IAST_0000000029


4. License
----------
To use this software, users need have registered for AAPP version 7
with the NWP SAF (www.nwpsaf.org), and to have agreed to the terms and
conditions for use of AAPP and OPS-LRS.


5. Delivery mechanism
---------------------
OPS-LRS is delivered by FTP. A test case is normally available on the
AAPP FTP site; if you have difficulty obtaining it please contact the NWP SAF
Helpdesk.


6. System requirements
----------------------
Supported platforms include: AIX, Solaris and Linux PC. HPUX and IRIX are not
supported.

The host machine must be able to run multithreaded applications, using pthreads
(POSIX threads).

To build OPS-LRS requires a Fortran 90 or FORTRAN 77 compiler, a C compiler and
a C++ compiler.

To run OPS-LRS requires about 1 Gbyte of disk space and 2 Gbyte of memory.

Standard Unix utilities (including make, ar, tar, perl5, lex, yacc) are used.


7. AAPP Web site
----------------
For further information on AAPP and OPS-LRS, please visit the NWP SAF web site
at http://www.nwpsaf.org

For bug reports, suggestions for improvement, etc., please use the NWP SAF 
feedback form, linked from the above web site.