On the Skew-t diagram, temperature is represented by the red line,
dewpoint is represented by green, wet-bulb temperature by the cyan line,
and virtual temperature by the dashed red line. The lifted parcel profile
is shown using the dashed white line. The hodograph is drawn with
height color coded ( Red: below 3 KFt AGL, Green: 3 to 6 KFt AGL,
Yellow: 6 to 9 KFt AGL, Cyan: 9 to 12 KFt AGL, Purple: above 12 KFt AGL).
The mean wind vector is shown as a yellow rectangle. The 30/70 and
15/85 storm motion vectors are marked by small pink and dark red
ellipses, while the user moveable storm motion vector is marked by a large white
ellipse.
A collection of calculated indicies are provided in the text panel adjacent to
the skewt/hodograph graph. These indicies are grouped into pages that can be
cycled using the "NEXT PAGE" button.
Animation or looping of soundings/hodographs is possible by selecting
a range or set of times for display. When more than one frame is available,
the animation controls are available. These controls, as shown below allow
the display to be advanced forward or backward a single step using the
single directionl arrows, or looped forwards or backwards using the double
directional arrows. Rocking of the loop is accomplished using the dualheaded arrow.
The Stop button is activated while the loop is being drawn to allow the user to abort
while a series of images is being drawn.
The level from which the parcel is lifted can be modified using the
"PARCEL" button on the display.
To modify the sounding profile, click on the temperature or dewpoint
profile and drag the selected level value to its new temperature value.
The sounding will be redrawn and indicies recalculated.
To restore the sounding to its original values, click "RESET".
To view the sounding values represented by the graph, click the
"SHOW TEXT" button. Text values in the display will automatically
be updated whenever the sounding profile is altered. Clicking the
SAVE button in the text panel will output the data to a file named
DECDDROB in the current working directory. The data in this file can be
read into NSHARP at a later time by selecting the "Archive File"
selection from the "Load" button on the top menu bar.
To print the sounding and calculated indicies to a postscript
file or printer, select the "Print" option from the "File" menu.
Printer locations can be defined in the $GEMTBL/config/printer.tbl
file.
Postscript output is reformated into a single page depiction of
the graphics display. Optionally, the text data can be sent to a file or
printer as well.
