Lake Victoria_1 (0314) Height Variations from TOPEX/POSEIDON and Jason series Altimetry

Lake Victoria_1

Data/image supplied by NASA. Link opens up new window.

Right click on the graph or graph title(e.g. Lake Victoria_1) to save the time series gif image, left click on the graphs to view and download the time series text files.

Shown above are relative lake height variations computed from TOPEX/POSEIDON (T/P), Jason-1 and Jason-2/OSTM altimetry with respect to a 9 year mean level derived from T/P altimeter observations. The Jason-2 near real time observations are obtained from the currently available Interim GDR (IGDR). These data have preliminary medium precision orbits (MOE) and several correction fields that are still being finalized. The top panel displays the raw height variations ((open circles denote potential icy or calm-water conditions, large error bars may denote noise or dry lake-bed conditions), while the height variation time series in the lower panel has been smoothed with a median type filter to eliminate outliers and reduce high frequency noise.

The USDA/NASA/SGT/UMD team acknowledges NASA/PODAAC, AVISO, NOAA, and the TU-Delft/NOAA RADS database, for the provision of the TOPEX/POSEIDON, Jason-1, Jason-2/OSTM, GFO, and SARAL altimetric datasets and parameters.