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3D Simulation Results:

This is the web interface for the visualization of a three-dimensional analytic description of the the vacuum magnetic field around Earth.

Note: Floating-point values with a decimal point not followed by numbers (e.g., "1." or "1.E+4") are not being accepted. Please enter equivalent values ("1.0" or 1.0E+4) or ("1" or "1e+4") instead.
Please review the default selections below and make your changes.

To start the graphics program click the Update Plot button. The resulting image will be displayed at this location of the page.

Should the result be a black image, then the graphics program encountered a programming error. Please report the set of input parameters used.

  Update Plot will update (generate) the plot with the chosen time and plot parameters below.
This will take some time (typically 10-30s) as data are read in and processed.

Analytic B-field setup:
Analyic superposition of magnetic dipole, mirror dipole and uniform magnetic field.
  • Box size:
    This is the extent to which field lines are traced (up to 300 RE away).
    The size of the plot area is set separately in Choose Plot Area below.
    Xmin: [RE]    Xmax: [RE]

    Ymin: [RE]    Ymax: [RE]

    Zmin: [RE]    Zmax: [RE]

  • Dipole:
    • [nT at equator]
    • Tilt in X-Z plane: [degrees]
    • Tilt in Y-Z plane: [degrees]
      Zero tilt is vertical.
  • Mirror Dipole:
    Tilt in X-Z plane is opposite to Dipole.
    • Moment: [nT at equator]
    • X-Position:  [RE]
  • Uniform (solar wind) field:
    • Bx: [nT]
    • By: [nT]
    • Bz: [nT]
Choose Plot Mode:
Plot Options:
 Exclude region around the Earth up to RE (this radius value is also used by the Color Contour on Sphere plot)
Image magnification 
   (all images; use >=1.25 for 3D Flowlines)
Line thickness  (flow lines, arrows)
Character thickness  (all annotations)
 Allow variable plot image size
(all 2D plots: aspect ratio dx/dy between 0.3 and 4)
 Show simulation grid (disabled with 3D-Surface)
 Show boundary of closed field lines (magnetopause on dayside) Positions in 2D cuts passing within 12 RE of Earth will be listed at the bottom.
  Tolerance (between 0.01 and 1 RE):
  Maximum Azimuth from Sun direction (≥0.25 degrees, ≤180 degrees):
  Angular Resolution (≥0.25 degrees, ≤ Maximum Azimuth):
 Show magnetic topology (use with "ColorContour", "Color+Vector" plot modes:
Add color coding by magnetic connectivity: red: closed, blue, open, yellow: connected to north, green: connected to south)
   Display Contour data with topology plot
  Elements in base grid from which field lines emanate:
  Base grid size
      Horizontal N1: (between 5 and 11):
      Vertical N2: (between 5 and 11):
  Refine base grid by 2Adaptation, computation time for this will scale accordingly:
    Adaptation: (between 2 and 6):
   Render grid cell vertices (to see positions used). Do not use with adapt ≥ 4, since PostScript (EPS) images can become very large.
 Interpolate data onto equidistant grid (available with 3D-Surface and Vector; recommended for plots with Vector)

Choose quantity to be displayed (some Plot Modes require up to three choices):
 Q 1:  Q 2:  Q 3: 
Customized variables are possible!
Email the formula that you would like to see and that uses existing quantities to Lutz and it will be tested and added.

Plot Options for selected Plot Modes:  
3D-Surface, 3D-Flowlines, Color Contour on Sphere:
  View angles:
   AX [-90..90]: (viewer's elevation angle)
   AZ [-180 ... 180]: (viewer's azimuth angle; 0: along negative Y)

Color Contour, (Vertical) Line:
   Color table
   Reverse Colortable
   Number of levels: 
     Lock color range:
       Min.:   Max.:
   Log scale (use all data>0 in non-negative fields)

    show values with contour levels
 Number of Levels
     Lock range:
       Min.:   Max.:
     Log scale (use all data>0 in non-negative fields)

 length of arrows:
     Normalize arrow length
       Unit arrow length at: 
     Log scale (scale arrows logarithmically)

 flowline start positions
 Choose Flowline Setup Mode:
 user-defined flowline start positions:


Choose Plot Area:
  All Plot Modes except Line Plot and Vertical Plot:   Select lower left corner of plot area on the left, and the upper right corner on the right.
  Line Plot: Select start point of line on the left, the end point on the right.
  Vertical Plot: Select X and Y position on the left.
Choose Cut Plane:    
X1 X2 Range: -30 ... 30 RE X=constant  
Y1 Y2 Range: -30 ... 30 RE Y=constant  
Z1 Z2 Range: -30 ... 30 RE Z=constant  
  Reset Form will reset changes to the defaults specified by the previous run of this script.
  Update Plot will update (generate) the plot with the chosen time and plot parameters above.
List Data (check to get any of the following outputs which apply to movie requests as well):
What: Plot variables from above
Include all primary model output parameters (Warning: text files may become large).
You have to select vector magnitudes (e.g., "B","V","J") explicitly for plotting to get them:
    computed scalars such as
    derived vectors (e.g, "JxB"): select one component or its magnitude to get all components

Include parameters from this list in addition to those selected for the plot: (copy names from Q1 list above and separate them with commas).
Where: At positions specified:   enter positions in X, Y, Z, (within the allowed range) as comma-separated lists.
    Use combination of positions in a 3D grid.
    X positions:
    Y positions:
    Z positions:
List Data From Plot:
  • 2D plots (Contour, Vector, ...):
         equidistant 61x61-element grid in cut plane (Interpolate data onto equidistant grid selected)
         max. 44000 grid positions (Interpolate data onto equidistant grid unchecked)
  • LinePlot: data along line plotted,
  • 3D-Flowlines:
    • Text output: start and end points of flow lines with topology and exit status of line segment tracings,
    • Tar archive: model output data along flowlines with user-defined start points.

National Aeronautics and Space Administration Air Force Materiel Command Air Force Office of Scientific Research Air Force Research Laboratory Air Force Weather Agency NOAA Space Environment Center National Science Foundation Office of Naval Research

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