Pre-processed data of atlas in EUCP-WP2

Preprocessed data of Atlas in EUCP-WP2

We provide some notebooks that check the original/raw data, fix/add the metadata using CF-conventions https://cfconventions.org/Data/cf-conventions/cf-conventions-1.9/cf-conventions.html and save data in a NetCDF format. See https://github.com/eucp-project/atlas/blob/main/python/README.md.

The pre-processed data follows the following standards:

coordinates

• climatology_bounds (climatology_bounds) datetime64[ns] ['2050-06-01', '2050-09-01', '2050-12-01', '2051-03-01']
• time (time) (datetime64[ns]) [2050-07-16 2051-01-16] # "JJA", "DJF"
• latitude (lat) (float64) [30, ..., 75]
• longitude (lon) (float64) [-10, ..., 40]
• percentile (percentile) (int64) [10, 25, 50, 75, 90]

variables

• tas (time, latitude, longitude, percentile) (float64)
• pr (time, latitude, longitude, percentile) (float64)

attributes

The attributes of variables and coordinates are defined as:

• "tas": {
  "description": "Change in Air Temperature",
  "standard_name": "Change in Air Temperature",
  "long_name": "Change in Near-Surface Air Temperature",
  "units": "K",
  "cell_methods": "time: mean changes over 20 years 2041-2060 vs 1995-2014",
  },
• "pr": {
  "description": "Relative precipitation",
  "standard_name": "Relative precipitation",
  "long_name": "Relative precipitation",
  "units": "%",
  "cell_methods": "time: mean changes over 20 years 2041-2060 vs 1995-2014",
  },
• "latitude": {"units": "degrees_north", "long_name": "latitude", "axis": "Y"},
• "longitude": {"units": "degrees_east", "long_name": "longitude", "axis": "X"},
• "time": {
  "climatology": "climatology_bounds",
  "long_name": "time",
  "axis": "T",
  "climatology_bounds": ["2050-6-1", "2050-9-1", "2050-12-1", "2051-3-1"],
  "description": "mean changes over 20 years 2041-2060 vs 1995-2014. The mid point 2050 is chosen as the representative time.",
  },
• "percentile": {"units": "%", "long_name": "percentile", "axis": "Z"},

The attributes of the data is defined as:

• "description": "Contains modified institute method data used for Atlas in EUCP project.",
• "history": "original institute method data files ...",

output file names

output_file_name = prefix_activity_institution-id_source_method_sub-method_cmor-var

example: atlas_EUCP_CNRM_CMIP6_KCC_cons_tas.nc

Reference:

https://eucp-project.github.io/atlas/about