Cedric
Again, name the script file as you would the REORDER file,
such as ced980813 or 980813c. Use the script file exactly as shown here. Do not
change anything. Spacings must be exactly as shown for Cedric to run.
DEFINE
READVOL 21. NEXT 222519. 223044.
FUNCTIONNUMBER
ZH
P 23.
ZH ZH 10.0
ZD
P 23.
ZD ZH 0.0
* LD
P 23.
LD ZH 0.0
* KD
P 23.
KD ZH 0.0
* RH
P 23.
RH ZH 0.0
END
*WINDOW DISTANCE 43.0 97.0
0.5 68.0 122.0 0.5
GRAPHICSMICRO Z*1.0
1.0
WINDOW
CONTOUR ZH
CFALL 0010100
UNI 10.0 50.0 5.0
CONTOUR ZD
CFALL 0010100
UNI 0
2 .5
* CONTOUR LD
GREYS 0010100
UNI -28.0 -16 2.0
* CONTOUR RH
GREYS 0010100
UNI 95 100
0.5
* CONTOUR KD
GREYS 0010102
UNI 0.0 0.4 0.05
* CONTOUR ZH
CGREYS 1021100
UNI 0 18.0
3.0
* CONTOURDZH
CGREYS 1010100
UNI 0 30.0
5.0
* OVERLAY ZH
ZD C
M M
GREY GREY
* OVERLAY ZD
ZH C
M M
GREY GREY
* OVERLAY LD
ZH C
M M
GREY GREY
* OVERLAY A3
ZH C
M M
GREY GREY
* OVERLAY HS
ZH C
M M
GREY GREY
* OVERLAY VE
ZH C
M M
GREY GREY
* OVERLAY RA
Z1 C
M M
GREY GREY
SCATTER
ZH 0
30 ZD -2.0
2.0 0
* SCATTER
ZH 0
30 LD
-26 -18 0
* SCATTER
ZH 0
30 RH
94 99.5 0
* SCATTER
ZH 0
70 KD
-1 6 0
END
*DELETE VE ZHXC
DFRC ZDR LDRC
LDXC ATX
WRITVOL
12
CDF
DEFEND
EXPAND
QUIT
ENDSTACK
There are only a few things you
should change in the script file. First, change the time (hr,min,sec) on the line
that begins with READVOL 21. Uncomment all parameters that were used in REORDER,
like ZD, DZ, LD, etc. Again, a comment in Cedric is indicated by (*). At
GRAPHICSMICRO, indicate what slices of the storm you are plotting, Z (elevation slices) or
X and Y, (vertical slices), multiplied by a resolution of your choice (usually just
1.0). At the CONTOUR lines, indicate what color scheme you want in the third column.
These are listed in the Cedric handout given under P4. Also, you can change
the numbers in the fourth column, again listed in the handout as P5. You can
uncomment the OVERLAY functions to see what types of plots are given. It is up to
you. Uncomment SCATTER for the parameters you are using. There is no need to change
anything else. Now you can run Cedric. At the command line, remove the fort.21 file
if needed:
rm
fort.21
Link the .ced file from REORDER to fort.21. For example:
ln (name.ced) fort.21
Run cedric:
cedric
< (name of cedric script)
After Cedric is finished running,
a filed called gmeta should be created in your folder. This is viewer for the radar data.
Remember to set your display. Once again, to do this, at the command prompt type:
setenv
DISPLAY (computer name or IP ):0.0
If you are working in the UNIX lab, enter the terminal
name (i.e opal). If you are using Exceed, use the IP address. To find this, click on the
command prompt option in the windows start menu, type at the following at the command
line:
ping
(computer number)
The computer number is on a
sticker on screen, for example B109_1 (don’t forget the underscore!)
To view the data, type:
idt
gmeta
and press the play button to see each plot.
 |
This is the
original gmeta file you will see after running REORDER and Cedric. As you can see,
there are play functions that will allow you to view each plot slice by slice, or you can
animate them to view all at once. This plot is of the same horizontal reflectivity
as in the SOLO plots. It is a horizontal slice of the storm cell at 2-km elevation
or in the z direction. There are many different ways we can view the interpolated
data. |
Figure 1: Original gmeta
image
|
|
 |
Figure 2 shows the same horizontal cut at
1-kilometer resolution as opposed to 2-meter resolution as in Figure 4. This is done
by changing the x and y spacing fields in REORDER appropriately. Changing the z
spacing will make horizontal slices at the chosen interval, in this example, every 0.5 km.
You don’t have to only see the storm cell from an
elevation point of view. You may want to look right through the most intense area of
the storm vertically. From the above plot, we can see that an area of intensity
occurs at about x =10 km, and y =24 km. |
Figure 2: Horizontal
Reflectivity at 1 km Resolution
|
|
|
Figure 3 shows the vertical cut at x = 10
kilometers. This type of view is changed in Cedric, under the GRAPHICSMICRO
command. Simply change Z to X and multiply it by 3 or 4 so the plot will fill the
whole screen. |
Figure 3: Vertical Cut at X=10
|
|
 |
Figure 4 shows the vertical slice at y = 24
kilometers. |
Figure 4: Vertical Cut at y
= 24 km
|
|
 |
Figure 5 shows differential reflectivity at 2
kilometers elevation and at 1-kilometer resolution. |
Figure
5: DZ at z = 2 km |
|
Don’t forget: You can view
as many fields as each .UF file has recorded. In this example, both ZH, horizontal
reflectivity, and DZ, differential reflectivity are plotted. Figure 8 shows
differential reflectivity at 2 kilometers elevation and at 1-kilometer resolution.