# Copernicus Climate Change Service regional reanalysis for Europe - User Examples
This project contains example code for users of the Copernicus Climate Change Service regional reanalysis for Europe (C3S_322_Lot1) data. More information about the service can be found at the [Copernicus Climate Change Service regional reanalysis for Europe website](https://climate.copernicus.eu/copernicus-climate-change-service-regional-reanalysis-europe).
The reanalysis data used here were initially produced within the FP7 pre-operational UERRA project.<br/>
More information about the reanalyses systems and data can be found at the [UERRA website](http://www.uerra.eu/).
## MARS retrieval examples
All data produced within the Copernicus Climate Change Service regional reanalysis for Europe and the pre-operational UERRA project is publicly available for download via the ECMWF MARS system.
The examples provided here uses the python ECMWF Web-API client.
Information about prerequisites for running these examples can be found at the [ECMWF website](https://software.ecmwf.int/wiki/display/WEBAPI/Access+ECMWF+Public+Datasets).
The folder ["mars_retrieve_examples"](mars_retrieve_examples/) contains example python scripts for retrieving temperature and 24 hour precipitation data from the Copernicus Climate Change Service regional reanalysis for Europe reanalysis via the ECMWF MARS system.<br/>
Modify the time, parameters, levels etc. to match your specific needs.
The folder ["mars_retrieve_total"](mars_retrieve_total/) contains python scripts for retrieving all datasets from the Copernicus Climate Change Service regional reanalysis for Europe reanalysis via the ECMWF MARS system.<br/>
The scripts are provided as a complete base showing all available data. Please note that this means a lot of data. Modify the time, parameters, levels etc. to match your specific needs.
All data produced within the Copernicus Climate Change Service regional reanalysis for Europe and the pre-operational UERRA project is publicly available for download via the ECMWF MARS system. These are example python scripts for retrieving temperature and 24 hour precipitation data. Please note that these requests can result in the retrieval of a lot of data.
Before running these scripts it is recommended to explore the available data and the corresponding MARS requests via Web-MARS:<br/>
[UERRA-HARMONIE data in Web-MARS](http://apps.ecmwf.int/datasets/data/uerra/levtype=sfc/stream=oper/type=an/)<br/>
[MESCAN-SURFEX data in Web-MARS](http://apps.ecmwf.int/datasets/data/uerra-mescan-surfex/levtype=sfc/stream=oper/type=an/)<br/>
Then modify the time, parameters, levels etc. in the scripts to match your specific needs.
The examples provided here uses the python ECMWF Web-API client.
Information about prerequisites for running these examples can be found at the [ECMWF website](https://software.ecmwf.int/wiki/display/WEBAPI/Access+ECMWF+Public+Datasets).
The examples are based on the [UERRA SMHI retrieval efficiency Web-API example](https://software.ecmwf.int/wiki/display/WEBAPI/UERRA+SMHI+retrieval+efficiency).
## General information
This project contains example code for users of the Copernicus Climate Change Service regional reanalysis for Europe (C3S_322_Lot1) data.
More information about the service can be found at the [Copernicus Climate Change Service regional reanalysis for Europe website](https://climate.copernicus.eu/copernicus-climate-change-service-regional-reanalysis-europe).
The reanalysis data were initially produced within the FP7 pre-operational UERRA project.
More information about the reanalyses systems and data can be found at the [UERRA website](http://www.uerra.eu/).