Analysis Date:
Valid Input: Any
valid date listed on the form.
Description:
Global analysis fields are based on the latest 10 days of
TOPEX/Poseidon data and 17 days of ERS 2 data up to and including
analysis date. Earlier analysis fields, if available, may be accessed
using the pull-down menu.
Geographical Region of Interest:
Valid Input: Longitude:
0.0 to 360.0 Latitude: 70.0S to 70.0N
Description:
This allows you to select a region of the world where you would like to
collect the sea surface height anomaly data. Click on a region button
for the default values for that region, or enter your own values. All
values are in degrees, and all longitude values are in East Longitude.
Minimum values may never exceed maximum values for longitude or
latitude. Note that smaller regions generate smaller files and thus
take less time.
Satellite:
Valid Input: Any
combination of available satellites.
Description:
This option allows for individual satellites or a combination to be
used for data processing.
Plot Type:
Valid Input: Ribbon,
Mirrored Stick, or Absolute Stick
Description:
Here you can choose the plot format to be used:
- Ribbon: Data are plotted using a color map.
- Mirrored Stick: High (red) and low (blue) data are
plotted as magnitudes on both sides of the satellite path.
- Absolute Stick: High (red) and low (blue) data are
plotted as magnitudes along the satellite path with high data on one
side and low data on the other.
Degree Format:
Valid Input: Any
selected radio button
Description:
Here you can choose the output format to be used when annotating map
boundaries. Choose between the four formats:
- Longitudes go from 0 to 360, latitudes from -90 to 90.
- Longitudes go from -180 to 180, latitudes from -90 to 90.
- Longitudes are unsigned 0 to 180, latitudes unsigned 0 to
90.
- Longitudes are unsigned 0 to 180 with letters E or W
appended, latitudes are unsigned 0 to 90 with N or S appended.
Color Palette:
Valid Input:
Color, Grayscale, None
Description:
This variable defines the color palette to be used in your plot.
- Color - This uses a continuous rainbow color
palette between the minimum and maximum range of data values.
- Grayscale - This uses a grayscale color palette
between the minimum and maximum range of data values.
- None - This turns all color mapping off.
Interval:
Valid Input: 0 to
100 (0 disables
contours)
Description:
This variable defines the contour interval
and tick marks on the color bar (units are in centimeters). The
anotation interval is twice the color bar interval If a color scheme
other than "None" is chosen, contours will overlay the color graphics
map.
Range of Data
Values to Apply Color Palette:
Valid Input: -100.0
to 100.0
Description:
These parameters allow you to choose the range of data values
to be color mapped in your plot (units are in centimeters). Any data
outside of the range you choose are clipped to the minimum/maximum
values of the color scale. If contouring is selected, contours are
plotted on full range of the data independent of the range of data
values selected.
File Orientation:
Valid Input: Portrait,
Landscape
Description:
Here you can choose the orientation of the plot on the page.
One orientation may provide a larger plot over the other.
File Format:
Valid Input: PostScript,
GIF
Description:
Choose the type of graphics format you wish to receive.
- PostScript - These files have a much larger file
size than the GIF format, but are always higher quality. These plots
will be downloaded directly to your local machine, and you will need a
PostScript viewer/printer to display/print them. Please be patient for
these files to transfer, large regions could result in a 1 MB file!
- GIF - This compressed format has a very small file
size - generally less than 40K. Some loss of image quality (relative to
PostScript) is inevitable. A temporary link to the GIF file is
generated, and you may view the file by clicking on the link.
If you wish to download the plot, please do so promptly! The
plot will be removed from our file system after 10 minutes, to conserve
disk space!
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