Invoking GEOPlot without including a menufile on the command line brings up the unfilled User Interface GUI menu.
Runs the application after the menu options have been filled in.
Quit the application
If you want to read in a previously saved menu, enter the file name the menu options were saved to into the provided box and then click the Read button to the right. This will read file and fill in the menu options with the values found in the file. Hit a return in the menu entry box after you have typed in the file name to echo it down into the Save Menu box.
If you want to save the entered menu options to a file, enter the file name in the provided box and then click the Save button to the right. This will save all option settings into that file. The Save operation works on both complete and incomplete menu definitions. Using the same save and read file names will update the read file. If you wish to make changes to the menu but not loose the original menu options the save file name must be different than the read file name.
A set of two options defining the color scheme. The first option allows the selection of a color table to load. There are a number of color tables which are selectable by clicking on the option bar.
The second option defines the background color of the plot. This is either white or black. The option toggles between the two states each time it is clicked.
A set of two options which define how actions associated with the mesh used to store the FUV data. The nominal mesh size into which the FUV image is mapped is 128x128 grids. The mesh scale option allows the number of grids to be either increased (values > 1.0), decreased (values < 1.0) or to remain at the nominal setting (value of 1.0). The new mesh size will be the number of grids long the sidex multiplied by the grid scale value. The nominal size is in the appropriate range for SI-12 and SI-13 data and probably should be set to 2.0 for WIC data.
The second option on the line specifies whether empty grids in the image mesh should be filled. If yes, unfilled grids are filled using a 2D least squares interpolation algorithm. Unfilled grids can occur for several reasons including selecting a mesh which has more elements than the image and non-linearities in the image pixel locations. Empty grids can be removed without filling by simply decreasing the mesh size using the previous option.
A set of three options defining the color mapping used when displaying the FUV image.
The first two options define the minimum and maximum color mapped values. Values below the minimum value are mapped to the plot background color as set above (either white or black) and values above the maximum value are mapped to the color of the maximum value. The third option sets the scaling to use in the mapping. This can either be LINEAR or LOGARITHMIC.A set of three options defining the scaling used when displaying the the FUV image intensity along the DMSP orbit track. The first two options define the minimum and maximum values of the plot axis. The third option sets the axis scaling. This can either be LINEAR or LOGARITHMIC.
The FUV image is displayed using an ORTHROGRAPHIC projection. This is a pseudo-3D projection which can also mimic a polar projection when viewed from one of the two poles. The center longitude and latitude options define the longitude and latitde which are centered in the plot presented to the user. The longitude options rotates the projection about the poles while the latitude option tilts the projection.
Note that when the image is being output in MAGNETIC coordinates, noon is at longitude 180° . To view the image noon sector you would then rotate in longitude by 180° . Produce a pseudo-polar plot like projection you can set the latitude off set to either 90° or to -90° . This is a useful projection if the image does not extend much below ± 45°.
This is the image cropping option. The option allows the minimum latitude which needs to be seen in the image to be set. The image is then cropped in the display ensuring that this latitude is visible. To turn off cropping set the option to FULL.
This is the directory containing the FUV image file being output. The entry may begin with an environment variable. For example if the image file is in your home directory under the directory FUVimageFiles then you could specify the directory as $HOME/FUVimageFiles.
The name of the FUV file containing the image data to be output.
This is coordinate system to use when plotting the FUV image. The options are discussed in the table below.
| OPTION | DESCRIPTION |
|---|---|
| GEOGRAPHIC | The image is plotted using geographic coordinates. |
| MAGNETIC | The image is plotted using geomagnetic coordinates. In this system noon is at a longitude of 180°. |
The DMSP satellite from which the DMSP data will be obtained.
This is the time at which to begin accumulating DMSP data. The time is specified as a 4 digit Year, Day of year, Hour, Minute, and Second.
This is the time at which to stop accumulating DMSP data. The time is specified as a 4 digit Year, Day of year, Hour, Minute, and Second.
The total time span specified by this and the previous menu entry should include the time during which the DMSP satellite passes over the FUV image.
This is the first DMSP measurement to include in the display. It is output in the first or uppermost of the two possible sets of plots with its scaling along the rght-hand axis. The FUV emission intensity is also output in this plot and scaled along the left-hand axis. The available parameters for plotting are described below.
| PARAMETER | DESCRIPTION |
|---|---|
| NONE | No defined output for this parameter. |
| Total Ion Energy Flux (1-35 keV) | The total energy flux as measured by the high energy ion head of the DMSP SSJ/4 experiment. |
| Total Ion Energy Flux (30-1000 eV) | The total energy flux as measured by the low energy ion head of the DMSP SSJ/4 experiment. |
| Total Ion Energy Flux (both ranges) | This is two sets of line plots. The first shows the total energy flux as measured by the low energy ion head of the DMSP SSJ/4 experiment and the second the total energy flux as measured by the high energy ion head. Both line plots are output in the same plot and against scaled against the same axis. |
| Energetic Ion Density (/cc) | The integrated ion DMSP SSJ/4 ion density. Integration makes the assumption of isotropy. |
| Energetic Ion Temperature (eV) | The integrated ion DMSP SSJ/4 ion temperature. Integration makes the assumption of isotropy. |
| Energetic Ion Average Energy (eV) | The integrated ion DMSP SSJ/4 ion average energy. Integration makes the assumption of isotropy. |
| Total Electron Energy Flux (1-35 keV) | The total energy flux as measured by the high energy electron head of the DMSP SSJ/4 experiment. |
| Total Electron Energy Flux (30-1000 eV) | The total energy flux as measured by the low energy electron head of the DMSP SSJ/4 experiment. |
| Total Electron Energy Flux (both ranges) | This is two sets of line plots. The first shows the total energy flux as measured by the low energy electron head of the DMSP SSJ/4 experiment and the second the total energy flux as measured by the high energy electron head. Both line plots are output in the same plot and against scaled against the same axis. |
| Energetic e- Density (/cc) | The integrated ion DMSP SSJ/4 ion density. Integration makes the assumption of isotropy. |
| Energetic e- Temperature (eV) | The integrated ion DMSP SSJ/4 ion temperature. Integration makes the assumption of isotropy. |
| Energetic e- Average Energy (eV) | The integrated ion DMSP SSJ/4 ion average energy. Integration makes the assumption of isotropy. |
| Ambient Density (/cc) | The ambient ionospheric plasma density from the DMSP SSIES experiment. |
| Ambient e- Temperatuyre (degK) | The ambient ionospheric electron temperature in degrees Kelvin from the DMSP SSIES experiment. |
| Ambient e- Temperatuyre (degK) | The ambient ionospheric ion temperature in degrees Kelvin from the DMSP SSIES experiment. |
| Ambient Cross Track Ion Drift (m/s) | The ambient ion cross track drift in m/s from the DMSP SSIES experiment. This is the Vy component of the ion drift. A positive drift is to the left when looking forward along the satellite track. |
| SI-12 Simulated Emission | This is a estimate of the SI-12 Rayleigh intensity computed from the average energy and total energy flux. The average energy is used to obtain an emission efficiency which is them multiplied by the total energy flux to get the Rayleigh intensity. |
A set of three options defining the scaling used when displaying Parameter 1. The first two options define the minimum and maximum values of the plot axis. The third option sets the axis scaling. This can either be LINEAR or LOGARITHMIC.
When no plot has been defined for Parameter 1 these options are not used within the program.This option allows the data to be output either at its own temporal resolution or averaged or summed over the duration of time it spends within an FUV pixel. In general the DMSP will make multiple measurements with an FUV pixel and at times it is advantegous to obtain either the total integrated or average measured quantity within each pixel traversed. The method used to sync to the FUV pixels is quite accurate and takes into account both full (side to side) and partial or skewed passage through a pixel. The options are listed in the table below.
| OPTION | DESCRIPTION |
|---|---|
| NO | Produce the plot using the native time resolution of the measurement. |
| SUM | Produce the plot using the sum of the quantity within each FUV pixel the orbit crosses. |
| AVERAGE | Produce the plot using the average of the quantity within each FUV pixel the orbit crosses. |
Note: This option is unused in the program if there is no measurement defined for the first parameter.
This is the second DMSP measurement to include in the display. It is output in the lower of the two possible sets of plots with its scaling along the left-hand axis. The available parameters for are identical to those listed under the Plot Parameter 1 option above.
Identical definitions to those described under the scaling options for Parameter 1.
Identical set of options to those described under the sync with FUV option for Parameter 1.
This is the third DMSP measurement to include in the display. It is output in the lower of the two possible sets of plots with its scaling along the right-hand axis. The available parameters for are identical to those listed under the Plot Parameter 1 option above.
Identical definitions to those described under the scaling options for Parameter 1.
Identical set of options to those described under the sync with FUV option for Parameter 1.
When computing ion plamsa moments this is the smallest ion density for which higher order moments will be produced. For densities below this value the moments are returned as 0.0 This can greatly reduce the noise in plots which contain periods where only background counts are observed. The actual computed ion density is always returned.
When computing electron plamsa moments this is the smallest electron density for which higher order moments will be produced. For densities below this value the moments are returned as 0.0 This can greatly reduce the noise in plots which contain periods where only background counts are observed. The actual computed electron density is always returned.
The figure below shows a fully defined user interface menu. The plot it generates is shown in the next section. The menu sets up a plots of three parameters from an over flight of the DMSP F13 satellite during an FUV SI-12 image from 2002 day 80. The FUV image is plotted in geomagnetic coordinates centered on noon and 60° latitude. All the parameters are plotted at their native resolution.
| &larr Previous | TOC | HOME | Next &rarr |
| Overview | Plot Outputs |