The forum is locked.
The Ocean Color Forum has transitioned over to the Earthdata Forum (https://forum.earthdata.nasa.gov/). The information existing below will be retained for historical reference. Please sign into the Earthdata Forum for active user support.
Topic Products and Algorithms / Satellite Data Products & Algorithms / SeaWiFS L2 sea ice flag (locked)
By Ryan
Date 2004-04-27 23:40
Hello all,
Within the SeaWiFS L2 processing flags (32) there occurs a cloud/ice flag which is generated from a threshold reflectance value but there is also a separate sea ice flag. What is the source data for this flag? The only information I came across said the sea ice flag was generated by "climatologies".
Thanks much,
Ryan
Within the SeaWiFS L2 processing flags (32) there occurs a cloud/ice flag which is generated from a threshold reflectance value but there is also a separate sea ice flag. What is the source data for this flag? The only information I came across said the sea ice flag was generated by "climatologies".
Thanks much,
Ryan
Unfortunately, I can't tell you much more than that. The sea ice flag was added on request of Robert Frouin, to be used in the masking of the PAR product. It's important for PAR that we can distinguish clouds from ice, and there's no radiometric scheme which can do that. The source of the sea ice data has never been clear; the heritage has been lost. I created the climatology file from a series of gif images covering the period Sept 1997 - Nov 1999, but I've never been able to determine how the original images were generated.
If someone can suggest a good source for sea ice data, I'd like to hear about it.
If someone can suggest a good source for sea ice data, I'd like to hear about it.
Topic Products and Algorithms / Satellite Data Products & Algorithms / SeaWiFS L2 sea ice flag (locked)