May 03 2012 Stephanie Weiss Steve Mills Calvin Liang NGAS AampDP NCC Sample of 4 Granules 2 Image provided by Tom Kopp ND3475981NCCNorthAmericad20120504t0826to0830 Hyperbolic shaped anomaly ID: 594803
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Slide1
NCC EDR Status
May 03, 2012
Stephanie Weiss, Steve Mills, Calvin Liang
NGAS A&DPSlide2
NCC Sample of 4 Granules
2
Image provided by Tom Kopp
ND_3475981_NCC_NorthAmerica_d20120504_t0826to0830
Hyperbolic shaped anomalySlide3
NCC Sample ADL reprocessed with min
irrad = 0
3
S. Weiss NGAS
Hyperbolic shaped anomaly eliminatedSlide4
Conclusion
Min irradiance change to 0 eliminates hyperbolic shaped anomaly in original NCC EDR The triangular area is still missing, and was not fixed by this change
change
appears
to be due to some
flaw in logic at the granule level
where there is a mix of Solar Zenith Angle (SlZA) both > 105 deg and < 105
deg it does not compute for those pixels > 105 deg SlZA , even there is sufficient lunar radiance to produce an NCC image.
However, if the entire granule is > 105 deg SlZA, and there is sufficient lunar illumination, it works fine. Is there a shortcut
here applying granule level logic to bypass some pixel level tests?4Slide5