VIIRS channel M06 saturation and “fold over”

Curtis SeamanCSU/CIRA

5/2/2012

SDR – SVM05 – 26 April 2012 – 19:01:58 UTC

Maximum radiance (white) = 666.042 W m-2 str-1 mm-1

Minimum radiance (black) = 12.659 W m-2 str-1 mm-1

SDR – SVM06 – 26 April 2012 – 19:01:58 UTC

Maximum radiance (white) = 49.205 W m-2 str-1 mm-1

Minimum radiance (black) = 11.038 W m-2 str-1 mm-1

SDR – SVM07 – 26 April 2012 – 19:01:58 UTC

Maximum radiance (white) = 418.80 W m-2 str-1 mm-1

Minimum radiance (black) = 5.774 W m-2 str-1 mm-1

• Granule over the Central U.S. (Mississippi River passes through center of images)

• Channel M06 SDR is saturated over nearly the entire granule

• Brightest clouds in M05 and M07 appear slightly darker (not quite white) in M06 (see highlighted areas)– radiance values decrease slightly with increasing M05 and

M07 radiances as C. Moeller indicated – this is the so-called “fold over”– striping is visible in “fold over” regions

Review of M06 SDR saturation