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  ds117.4 Detailed Metadata

Overview
Dataset Citation:
European Centre for Medium-Range Weather Forecasts, 2004: ERA40 Model Resolution Gridded Upper Air Analysis on a Potential Vorticity Surface from ECMWF. Dataset ds117.4 published by the CISL Data Support Section at the National Center for Atmospheric Research, Boulder, CO, available online at http://dss.ucar.edu/datasets/ds117.4/.
Types of data:
  • Grids
 Data formats:
Data contributors:
  • ECMWF > European Centre for Medium-Range Weather Forecasts
Programs/Experiments that collected the data:
  • ERA40 > ECMWF ERA40 Reanalysis Project
Total volume:  33.072 Gbytes

Summary for Grids in WMO GRIB1 Format
Product and Coverage Information:
There is one product and one geographical coverage for all of the grids in this format:
    Product: Analysis
    Geographical Coverage: 1.125° x ~1.121° from 0E to 358.875E and 89.141N to 89.141S (reduced n80 Gaussian Longitude/Latitude)
VariableParameter
Code
Vertical LevelsTemporal Valid Range
Geopotential (m2 s-2)129
• Potential vorticity surface: 7 10-9 deg K m2 kg-1 s-1  1957-09-01 00:00 to 2002-08-31 18:00
Ozone mass mixing ratio (kg kg-1)203
• Potential vorticity surface: 7 10-9 deg K m2 kg-1 s-1  1957-09-01 00:00 to 2002-08-31 18:00
Potential temperature (K)3
• Potential vorticity surface: 7 10-9 deg K m2 kg-1 s-1  1957-09-01 00:00 to 2002-08-31 18:00
Pressure (Pa)54
• Potential vorticity surface: 7 10-9 deg K m2 kg-1 s-1  1957-09-01 00:00 to 2002-08-31 18:00
Specific humidity (kg kg-1)133
• Potential vorticity surface: 7 10-9 deg K m2 kg-1 s-1  1957-09-01 00:00 to 2002-08-31 18:00
U velocity (m s-1)131
• Potential vorticity surface: 7 10-9 deg K m2 kg-1 s-1  1957-09-01 00:00 to 2002-08-31 18:00
V velocity (m s-1)132
• Potential vorticity surface: 7 10-9 deg K m2 kg-1 s-1  1957-09-01 00:00 to 2002-08-31 18:00

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