Radiometric Quality of VIIRS: Impact on Ocean Color Products
Gerhard
Meister, NASA/Futuretech, gerhard.meister@nasa.gov
(Presenting)
Sean
Bailey, NASA/Futuretech, sean.bailey@nasa.gov
Robert
Barnes, NASA/SAIC, robert.a.barnes@nasa.gov
Gene
Eplee, NASA/SAIC, gene.e.eplee@nasa.gov
Gene
Carl
Feldman, NASA, gene.carl.feldman@nasa.gov
Charles
McClain, NASA, charles.r.mcclain@nasa.gov
Fred
Patt, NASA/SAIC, frederick.s.patt@nasa.gov
Wayne
Robinson, NASA/SAIC, wayne.robinson@nasa.gov
Kevin
Turpie, NASA/SAIC Jeremy
Werdell, NASA/SSAI, jeremy.werdell@nasa.gov
This poster summarizes the expectations of the NASA VIIRS Ocean Science Team regarding the impact of radiometric quality issues of the VIIRS sensor on ocean color products.
Crosstalk is the largest problem of the NPP VIIRS instrument
performance. We do not expect high quality ocean color retrievals when
large crosstalk is present. The subsequent VIIRS on NPOESS may have less crosstalk contamination due to a new focal plane.
For an ocean color sensor, long term radiometric stability is of the
highest importance. Several issues discussed in this poster regarding
the instrument calibration pose serious risks to producing water-leaving radiances without significant temporal trends.
No ocean color mission has delivered climate quality data products
without reprocessing its data. One basic problem is that
state-of-the-art primary calibration methods like solar diffuse, lunar
measurements and vicarious calibration operationally do not deliver the required radiometric accuracy. For the optimal derivation of long term trends, it is necessary to analyze the whole time series. An operational approach cannot exploit this advantage, and will therefore deliver suboptimal results.
NASA Carbon Cycle & Ecosystems Active Awards Represented by this Poster: