Recently, I found out that flex_extract version 7.0.3 has an error in the extraction of ERA5 data!

PLEASE STOP USING ERA5 DATA EXTRACTION!!!!

Times 17 and 18 do not contain any flux fields (e.g. precipitation). And the rest of the times it seems that the flux fields are shifted in time.

I'll provide a bug fix as soon as possible!

Explanations will follow ...

Dear FLEXPART users,

we prepared a bugfix version for flex_extract v7.0.3 used for retrieving ECMWF input data for FLEXPART. This was necessary since there were errors in ERA5 and CERA retrievals. Also, there were some other problems.

NEW FEATURES:

• This version can now retrieve ERA5 and CERA data.
• It can retrieve public datasets by using the command line parameter public
• It can write an extra file mars_requests.csv which contains all mars request parameters for each request. Use the command line pararmeter request
• It can retrieve analysis and forecast ensembles efficiently e.g. by setting number=0/to/9. In this case output files get an additional suffix for the ensemble member number.

MODULE PACKAGE CONDITIONS:

On ecgate we use the following module packages:

• jasper/1.900.1(default)
• eccodes/2.9.2(nov18:default)
• ecfs/2.2.5(nov18:test:new:prodn:default)
• python/2.7.12-01(may18:new:default)
• ecaccess/4.0.2(default)
• fftw/3.3.4(default)
• emos/455-r64

Please be aware that all of the above packages are the current default versions except for emos! This is important since emos/458 does not work!

DOWNLOAD

The tarball that includes a Software Installation Protocol and a Software User Tutorial can be downloaded here ​flex_extract v7.0.4

With best regards,

Anne Philipp and Leopold Haimberger

With the end of February 2019, ECMWF will terminate their ECMWF Web API access to ERA5 data.

This is because the C3S (Copernicus Climate Change Service) has build a new service, the Climate Data Store (CDS)​https://cds.climate.copernicus.eu/. Up to now, they provide online access to a limited set of ERA5 pressure and single level data. The rest is still archived in MARS on ECMWF servers. At some point in time, they will move all ERA5 data to the CDS.

Therefore a new feature for flex_extract have to be added to support ERA5 data download with the new CDS API​https://pypi.org/project/cdsapi/.