Search found 1193 matches

by OB.DAAC - SeanBailey
Fri Jan 23, 2015 4:31 pm America/New_York
Forum: All Questions/Comments
Question: Lake processsing
Replies: 9

Lake processsing

Processing with the "null" landmask, or with the maskland=0 option set will still result in atmospheric correction failures over land.  The l2gen program is designed to retrieve over water.  All that using the null landmask does is force l2gen to process all pixels regardless ofw...
by OB.DAAC - SeanBailey
Fri Jan 23, 2015 4:24 pm America/New_York
Forum: All Questions/Comments
Question: Lake processsing
Replies: 9

Lake processsing

If your BEAM installation has the latest version of the seadas_reader module, then yes. Otherwise, no.
by OB.DAAC - SeanBailey
Thu Jan 22, 2015 9:37 am America/New_York
Forum: All Questions/Comments
Question: Lake processsing
Replies: 9

Lake processsing

You can set maskland=0 or to be really sure land=$OCDATAROOT/common/landmask_null.dat.
Keep in mind we have NOT vicariously calibrated HICO, so while you may get a retrieval, the results may not be valid.

Sean
by OB.DAAC - SeanBailey
Sat Jan 17, 2015 10:07 am America/New_York
Forum: All Questions/Comments
Question: Lake processsing
Replies: 9

Lake processsing

As Jasmine pointed out, l2gen currently only supports a "multi-spectral" HICO (16 bands matching MERIS wavelengths).   We've also not vicariously calibrated HICO.It is possible that the data have been flagged as cloud or another mask condition that would prevent atmospheric c...
by OB.DAAC - SeanBailey
Thu Dec 04, 2014 10:31 am America/New_York
Forum: All Questions/Comments
Question: Level 2 products for all hico bands
Replies: 2

Level 2 products for all hico bands

No, not yet anyway.  The l2gen program cannot yet handle hyperspectral data.
by OB.DAAC - SeanBailey
Mon Nov 17, 2014 3:29 pm America/New_York
Forum: All Questions/Comments
Question: HICO l2 projection problem
Replies: 6

HICO l2 projection problem

Yes, using GPT (the Graph Processing Tool).   We're still working on a decent tutorial for this, however, there are several posts on this forum with examples.
There is also an overview presentation on the subject.

Regards,
Sean
by OB.DAAC - SeanBailey
Fri Nov 14, 2014 12:29 pm America/New_York
Forum: All Questions/Comments
Question: HICO l2 projection problem
Replies: 6

HICO l2 projection problem

By default, the Reprojection tool uses a nearest neighbor resampling approach.  It offers two others: bilinear and bicubic.If you select the bicubic approach, the reprojected image does not have these 'wing-like' artifacts.  I will contact our BEAMpartners (who developed the reproj...
by OB.DAAC - SeanBailey
Thu Oct 02, 2014 3:02 pm America/New_York
Forum: All Questions/Comments
Question: Correcting offset in HiCO geolocation
Replies: 1

Correcting offset in HiCO geolocation

James,There is a ground control point feature.With this you can "attach" a geocoding based on the GCPs you define (need at least three know points, the more the better).  I've discovered that the landmask/coastline feature isn't recognizing this attached geocoding - we'll ...
by OB.DAAC - SeanBailey
Fri Aug 08, 2014 10:17 am America/New_York
Forum: All Questions/Comments
Question: SeaDAS Short Course at Ocean Optics XXII
Replies: 0

SeaDAS Short Course at Ocean Optics XXII

We are pleased to announce that there will be a Short Course on SeaDAS inconjunction with the Ocean Optics XXII Conference.  Details about the courseand registration can be found at the conference website:    http://www.tos.org/oceanopticsconference/workshops_register.html#seadas Seating is limited,...
by OB.DAAC - SeanBailey
Mon Jul 21, 2014 6:33 pm America/New_York
Forum: All Questions/Comments
Question: HICO level 2 processing
Replies: 15

HICO level 2 processing

Christophe,

No, not yet anyway.  We do not produce L2 files from HICO operationally, in part because we've not had time to assess the calibration.
Eventually, we will, but for now the gains are set to unity.

Regards,
Sean