Ocean Color l2_flags ：NASA Ocean Color
网站底部有 Level-2 Bit-flip Tool ，非常直观。
| Bit |
Name | Short Description | L2 Mask Default |
L3 Mask Default |
|---|---|---|---|---|
| 00 | ATMFAIL | Atmospheric correction failure | ON | |
| 01 | LAND | Pixel is over land | ON | ON |
| 02 | PRODWARN | One or more product algorithms generated a warning | ||
| 03 | HIGLINT | Sunglint: reflectance exceeds threshold | ON | |
| 04 | HILT | Observed radiance very high or saturated | ON | ON |
| 05 | HISATZEN | Sensor view zenith angle exceeds threshold | ON | |
| 06 | COASTZ | Pixel is in shallow water | ||
| 07 | spare | |||
| 08 | STRAYLIGHT | Probable stray light contamination | ON | ON |
| 09 | CLDICE | Probable cloud or ice contamination | ON | ON |
| 10 | COCCOLITH | Coccolithophores detected | ON | |
| 11 | TURBIDW | Turbid water detected | ||
| 12 | HISOLZEN | Solar zenith exceeds threshold | ON | |
| 13 | spare | |||
| 14 | LOWLW | Very low water-leaving radiance | ON | |
| 15 | CHLFAIL | Chlorophyll algorithm failure | ON | |
| 16 | NAVWARN | Navigation quality is suspect | ON | |
| 17 | ABSAER | Absorbing Aerosols determined | ||
| 18 | spare | |||
| 19 | MAXAERITER | Maximum iterations reached for NIR iteration | ON | |
| 20 | MODGLINT | Moderate sun glint contamination | ||
| 21 | CHLWARN | Chlorophyll out-of-bounds | ON | |
| 22 | ATMWARN | Atmospheric correction is suspect | ON | |
| 23 | spare | |||
| 24 | SEAICE | Probable sea ice contamination | ||
| 25 | NAVFAIL | Navigation failure | ON | |
| 26 | FILTER | Pixel rejected by user-defined filter OR Insufficient data for smoothing filter |
||
| 27 | spare | |||
| 28 | BOWTIEDEL | Deleted off-nadir, overlapping pixels (VIIRS only) | ||
| 29 | HIPOL | High degree of polarization determined | ||
| 30 | PRODFAIL | Failure in any product | ||
| 31 | spare |