USEFUL LINKS FOR WORKING WITH ECMWF ARCHIVE AND FLEX_EXTRACT
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general overview
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https://software.ecmwf.int/wiki/display/WEBAPI/ECMWF+Web+API+Home
https://software.ecmwf.int/wiki/display/SUP/Home

follow instructions to register
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https://software.ecmwf.int/wiki/display/WEBAPI/Access+MARS

available public datasets and accept licence
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https://software.ecmwf.int/wiki/display/WEBAPI/Available+ECMWF+Public+Datasets

member-state WebApi access
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http://apps.ecmwf.int/archive-catalogue/

website to download directly public datasets and check webapi activity
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http://apps.ecmwf.int/datasets/

general user documentation
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https://software.ecmwf.int/wiki/display/UDOC/User+Documentation

mars user documentation
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https://software.ecmwf.int/wiki/display/UDOC/MARS+user+documentation
  -> specifically the keywords!!!!
  https://software.ecmwf.int/wiki/display/UDOC/MARS+keywords
  
libraries:
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https://software.ecmwf.int/wiki/display/SUP/2015/05/11/Building+ECMWF+software+with+gfortran
http://www.fftw.org
https://software.ecmwf.int/wiki/display/EMOS/Emoslib
https://software.ecmwf.int/wiki/display/GRIB
https://software.ecmwf.int/wiki/display/ECC


Information to datasets:
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https://www.ecmwf.int/en/forecasts/datasets/archive-datasets

EA5
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https://software.ecmwf.int/wiki/display/CKB/What+is+ERA5
https://software.ecmwf.int/wiki/display/CKB/How+to+download+ERA5+data+via+the+ECMWF+Web+API
https://software.ecmwf.int/wiki/display/CKB/ERA5+data+documentation

CERA-20C
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https://software.ecmwf.int/wiki/display/CKB/What+is+CERA-20C
https://www.ecmwf.int/en/forecasts/datasets/archive-datasets/reanalysis-datasets/cera-20c

ERA-Interim
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https://www.ecmwf.int/en/forecasts/datasets/archive-datasets/reanalysis-datasets/era-interim

Plotting GRIB fields:
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https://software.ecmwf.int/wiki/display/CKB/How+to+plot+GRIB+files+with+Python+and+matplotlib


Installation hints:
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1. Read Emoslib installation instructions
2. Read ECMWF blog about gfortran
3. Install FFTW
4. Install EMOSLIB (2 times make! one without any options and one with single precision option)
5. Install ECCODES OR GRIB_API
6. Register at Mars
7. Install WEBAPI
8. Check LD_LIBRARY_PATH environment variable if it contains all paths to the libs
9. Check available python packages (e.g. import eccodes / import grib_api / import ecmwfapi)
10. Start test retrieval
11. Install flex_extract

Notes:
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- use the same compiler and compiler version all the time
- don't forget to set all Library paths to the LD_LIBRARY_PATH variable
- adapt makefile