Useful links for working with ECMWF's MARS archive and flex_extract

Installation step-by-step:

1. Read ​Emoslib installation instructions and install emoslib (2 times make! One without any options, and one with single precision option.)
2. Read ​ECMWF's blog entry about gfortran and double precision flags
3. Install ​fftw
4. Install ​eccodes (or ​grib_api)
5. Register for ​MARS access, consider ​available public datasets and their licences
6. Install WebApi
7. Make sure that LD_LIBRARY_PATH environment variable contains paths to all the libs
8. Check availability of python packages required (e.g. import eccodes / import grib_api / import ecmwfapi) and install them if not present
9. Start test retrieval
10. Install flex_extract

Notes:

• use the same compiler and compiler (major) version all the time
• adapt makefile to your environment

General links

​https://software.ecmwf.int/wiki/display/WEBAPI/ECMWF+Web+API+Home
​https://software.ecmwf.int/wiki/display/SUP/Home

Member-state WebApi access

​http://apps.ecmwf.int/archive-catalogue/

Website to download directly public datasets and monitor WebApi activity

​http://apps.ecmwf.int/datasets/

General user documentation

​https://software.ecmwf.int/wiki/display/UDOC/User+Documentation

MARS user documentation

​https://software.ecmwf.int/wiki/display/UDOC/MARS+user+documentation -> specifically the keywords!!!!
​https://software.ecmwf.int/wiki/display/UDOC/MARS+keywords

Information on data sets:

Overview: ​https://www.ecmwf.int/en/forecasts/datasets/archive-datasets

EA5

​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

​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

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

Plotting fields from GRIB files with python:

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