SeaWiFS Lunar Calibration Time Fits

Image generated November 7, 2006.

This plot shows the two exponential fits that have been applied to the lunar time series for band 8. The exponential shown in red shows the combined effects of the short-period (blue) and long-period (green) exponentials. For a given time range, the dominant exponential is the one with the largest gradient. The exponential fits for bands the other bands exhibit a behavior similar to that for band 8, though the to a lesser magnitude.

Two different decay mechanisms are responsible for the changes in response of the instrument in band 8. The first mechanism caused a rapid decrease in response that decayed away after approximately the first year of the mission. The second mechanism has been in effect over the entire mission; this decay most likely arises from charged-particle induced damage to the silicon photodiodes.

Return to SeaWiFS Lunar Calibration Time Series.

For further information contact Gene Eplee.

Last modified: Tue Nov 7 11:07:48 EST 2006