ECMWF ERA-40 Forecast Study data

Introduction

In response to a user request we have extracted two months worth of additional forecast products for ERA-40. This data has been the object of a study examining how the model forecasts handle the quantification and distribution of moisture-related fields.

Additional forecast data

These additional forecasts have been extracted for the months of January and July 1985 and consist of the following:

• N80 Reduced Gaussian Gridded Model Level Forecast data (ggfm):
     Data is located under the 01 (January) and 07 (July) sub-directories of:

        http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-e40/data/gg/fm/1985

• Available Parameters
  • 130 - t - Temperature (K).
  • 133 - q - Specific Humidity (kg/kg).
  • 135 - w - Vertical Velocity (Ps s**-1).
  • 138 - vo - Vorticity (relative) (s**-1).
  • 152 - lnsp - Log Surface Pressure (-).
  • 203 - o3 - Ozone Mass Mixing Ratio (kg/kg).
  • 246 - clwc - Cloud Liquid Water Content (kg/kg).
  • 247 - ciwc - Cloud Ice Water Content (kg/kg).
  • 248 - cc - Cloud Cover (0-1).

• N80 Reduced Gaussian Gridded Pressure Level Forecast data (ggfp):
     Data is located under the 01 (January) and 07 (July) sub-directories of:

        http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-e40/data/gg/fp/1985

• Available Parameters
  • 60 - pv - Potential Vorticity (m**2 s**-1 K).
  • 130 - t - Temperature (K).
  • 133 - q - Specific Humidity (kg/kg).
  • 135 - w - Vertical Velocity (Ps s**-1).
  • 138 - vo - Vorticity (relative) (s**-1).
  • 155 - d - Divergence (s**-1).
  • 203 - o3 - Ozone Mass Mixing Ratio (kg/kg).

• N80 Reduced Gaussian Gridded Single Level Forecast data (ggfs):
     Data is located under the 01 (January) and 07 (July) sub-directories of:

        http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-e40/data/gg/fs/1985

• Available Parameters
  • 164 - tcc - Total Cloud Cover (0-1).

• T159 Spectral Model Level Forecast data (spfm):
     Data is located under the 01 (January) and 07 (July) sub-directories of:

        http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-e40/data/sp/fm/1985

• Available Parameters
  • 130 - t - Temperature (K).
  • 133 - q - Specific Humidity (kg/kg).
  • 135 - w - Vertical Velocity (Ps s**-1).
  • 138 - vo - Vorticity (relative) (s**-1).
  • 152 - lnsp - Log Surface Pressure (-).
  • 155 - d - Divergence (s**-1).
  • 203 - o3 - Ozone Mass Mixing Ratio (kg/kg).
  • 246 - clwc - Cloud Liquid Water Content (kg/kg).
  • 248 - cc - Cloud Cover (0-1).

• T159 Spectral Pressure Level Forecast data (spfp):
     Data is located under the 01 (January) and 07 (July) sub-directories of:

        http://badc.nerc.ac.uk/cgi-bin/data_browser/data_browser/badc/ecmwf-e40/data/sp/fp/1985

• Available Parameters
  • 60 - pv - Potential Vorticity (m**2 s**-1 K).
  • 130 - t - Temperature (K).
  • 133 - q - Specific Humidity (kg/kg).
  • 135 - w - Vertical Velocity (Ps s**-1).
  • 138 - vo - Vorticity (relative) (s**-1).
  • 155 - d - Divergence (s**-1).
  • 157 - r - Relative Humidity (%).
  • 203 - o3 - Ozone Mass Mixing Ratio (kg/kg).

Details of other parameters is also available.

File-naming and directories