FLEXPART interactive webpage

This webpage is developed and maintained by Jerome Brioude, CIRES/NOAA ESRL, Boulder (originally by Caroline Forster, NILU Norway and Owen Cooper, CIRES/NOAA ESRL, Boulder) .
Please direct all inquiries to Jerome Brioude. In case of problems please send the values you have entered on the interactive webpage.

Fill in the values below to produce custom plots of FLEXPART archived tracers.
You can plot horizontal and/or vertical cross sections.

For an overview of currently available forecasts see FLEXPART and FLEXTRA static forecast products.

Type of Tracer
  • Choose a project (Information on the different projects)
    project:
  • Enter the tracer type
    tracer:
  • Enter the maximum tracer mixing ratio and maximum column (in case of
    total column plots) to be contoured
    max. mixing ratio (ppbv): max. column (mg/m2):
  • What kind of color scale would you like?
  • Would you like to get your plots as post script, too?
Time and age class
  • Enter the tracer age you would like to plot
    age class:
  • Select the time of the cross-sections
    year month day hour
  • Would you like to plot a single image, or a movie?
    If you would like a movie, the date entered above is the beginning time of the movie.
    Now enter the time step of the movie , the type of animation and the ending time of the movie.
    year month day hour
Info about movie

  • Would you like to plot a horizontal or vertical cross section?
  • Would you like to plot nested output fields?


    • Horizontal cross section
    • Enter the altitude (meters):
      For a total column plot, enter -1

    • Would you like to plot meters above sea level or meters above ground level?
    • What kind of projection?
      • The interactive maps change according to the selected projection
    Vertical cross section
    Enter the latitudes and longitudes manually or use the interactive tool
    • Enter the left-hand latitude and longitude of the vertical cross-section
      West longitude locations must include a negative sign

      latitude: longitude:
    • Enter the right-hand latitude and longitude of the vertical cross-section
      West longitude locations must include a negative sign

      latitude: longitude:
    How to use the projection interactive maps
  • Polar Stereographic projection: Select a region
    or enter the latitude and longitude of the lower left corner and upper right corner or use the interactive map
    lat(lower left corner): lat(upper right corner):
    lon(lower left corner): lon(upper right corner):

    • Horizontal cross section interactive tool
    reference longitude
    Vertical cross section interactive tool
    reference longitude