Global Near Real-Time Altimeter Geostrophic Velocity Viewer

Colorado Center for Astrodynamics Research
Dept. of Aerospace Engineering Sciences University of Colorado, Boulder

Welcome to the CCAR Global Near Real-Time Altimeter Geostrophic Velocity Viewer. This page allows you to view maps of the sea surface height (as an anomaly or including an estimate of the mean height) with superimposed velocity vectors. The maps are produced from Jason, TOPEX/Poseidon(T/P), Geosat Follow-On(GFO), ERS-2 and Envisat altimeter data processed in near real-time. This quick-look processing is designed to retain the mesoscale sea surface height anomalies associated with fronts and eddies. An analysis product is produced every weekday, based on the latest 10 days of Jason and T/P, 17 days of GFO and 35 days of ERS-2 and Envisat sampling, if available. See Satellite Dates for more information.

This page is hosted by the Colorado Center for Astrodynamics Research (CCAR) at the University of Colorado, Boulder.

Map Input Options

Analysis Date:
Only data for dates up to and including the default date (the date displayed in the selection box upon initial loading of the page or the date displayed by clicking the "Reset Values" button) can be viewed.

Month Day Year

Geographical Region of Interest:
Note: Large regions could cause the processing to crash. Approximate maximum is 30x30 degrees.

EAST LONGITUDE (in degrees)
minimum maximum

LATITUDE (in degrees)
minimum maximum

Bathymetry:
Plot only data in water deeper than: meters

Smoothing Radius:

Estimated Mean:
No Mean Add Mean

Map Formatting Options:

Plot SSH or Velocity Magnitude:
Velocity Magnitude SSH

Plot Velocity Vectors:
Yes No

Velocity Vector Color:
Black White

Velocity Vector Length:
Short Normal Long

Degree Format:
Longitudes go from 0 to 360. Latitudes go from -90 to 90.
Longitudes go from -180 to 180. Latitudes go from -90 to 90.
Longitudes are unsigned 0 to 180. Latitudes are unsigned 0 to 90.
Longitudes are unsigned 0 to 180 with letters E or W appended. Latitudes are unsigned 0 to 90 with letters N or S appended.

Color Palette:

Range of Data Values to Apply Color Palette: (integer values only)
Minimum (in centimeters): Maximum (in centimeters):

Output Options:

File Orientation:
Portrait Landscape

File Format:
GIF PostScript

Questions? Comments?

Send mail to the CCAR Real-time Altimeter Data Research Group.

Page created and maintained by the CCAR Real-Time Altimeter Data Group.