Title :
Corrections to the calibration of MODIS Aqua ocean color bands derived from SeaWiFS data
Author :
Meister, Gerhard ; Franz, Bryan A. ; Kwiatkowska, Ewa J. ; McClai, Charles R.
Author_Institution :
Ocean Biol. Process. Group, Goddard Space Flight Center, Greenbelt, MD, USA
Abstract :
The NASA ocean color products of SeaWiFS and MODIS Aqua have been reprocessed in 2009 and 2010, respectively. This paper describes the changes to the calibration approach for MODIS Aqua. Due to a significant downward trend in the operational MODIS Aqua water-leaving radiances at 412nm, the previous calibration approach was no longer sufficient. The new approach uses SeaWiFS water-leaving radiances to adjust the temporal trends of the MODIS Aqua 412nm and 443nm water-leaving radiances. The remaining five bands (488nm to 678nm) are adjusted with regard to their scan angle dependence only. A similar approach has been applied to MODIS Terra before, but for MODIS Aqua there is no need to adjust the polarization sensitivity.
Keywords :
calibration; electromagnetic wave polarisation; oceanographic techniques; oceanography; remote sensing; AD 2009; AD 2010; MODIS Aqua; NASA ocean color products; SeaWiFS; calibration; polarization sensitivity; scan angle dependence; water-leaving radiances; Calibration; Image color analysis; MODIS; Moon; Oceans; Sea measurements; Calibration; Image sensors; Remote sensing;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-9565-8
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2010.5651742
