Search found 43 matches

by OB.DAAC - SeanBailey
Thu May 22, 2025 2:31 pm America/New_York
Forum: Home
Question: Where to find PACE SPEXone Spectral Response Functions
Replies: 1

Re: Where to find PACE SPEXone Spectral Response Functions

The SPEXone (and HARP2) spectral response function data can be downloaded from here: https://oceancolor.gsfc.nasa.gov/data/pace/characterization/ The response functions on the https://oceancolor.gsfc.nasa.gov/resources/docs/rsr_tables/ page are for sensors supported by our l2gen code that is used fo...
by OB.DAAC - SeanBailey
Thu May 22, 2025 12:59 pm America/New_York
Forum: Home
Question: Inconsistencies between CMR and OBPG subscription
Replies: 1

Re: Inconsistencies between CMR and OBPG subscription

The CMR result is more correct. The subscription service uses a cartesian box of the NSWE extremes for a granule in the search. This can lead to false positives as the bounding box associated with a granule includes area outside the granule. The A2025141165500.L1A_LAC granule does not contain any da...
by OB.DAAC - SeanBailey
Wed May 14, 2025 9:47 am America/New_York
Forum: Home
Question: l2gen Rrs in cloud pixels
Replies: 1

Re: l2gen Rrs in cloud pixels

Very few processing flags are masked in l2gen process, but yes, clouds is one of them. If l2gen determines a pixel is cloudy, it is extremely unlikely that Rrs could be retrieved if the mask were disabled (which you can do by setting the parameter maskcloud=0). The instrument has to see the ocean to...
by OB.DAAC - SeanBailey
Fri May 02, 2025 1:25 pm America/New_York
Forum: Home
Question: The issue of l2gen processing Landsat 5 6
Replies: 3

Re: The issue of l2gen processing Landsat 5 6

I've passed this along to the programming staff to take a look, though you may be correct that it is missing a cos(solz) in the equation

Regards,
Sean
by OB.DAAC - SeanBailey
Fri May 02, 2025 1:22 pm America/New_York
Forum: Home
Question: access OCI data
Replies: 6

Re: access OCI data

A 503 error indicates a server-side error, which may be intermittent. I was able to run your code (after editing it to restore proper indentation - in the future you can wrap the text in the "code" element - see the angle bracket icon above -to preserve indentation). I did have to comment ...
by OB.DAAC - SeanBailey
Wed Apr 30, 2025 7:22 am America/New_York
Forum: Home
Question: Changes in VIIRS SNPP L1A data
Replies: 5

Re: Changes in VIIRS SNPP L1A data

Andrei, Looking at the 30 March 2015 date, the "missing" granules were QC failed (determined to be of bad quality) because of a spacecraft maneuver to execute a lunar calibration. This affected 2 full 6 minute granules and partially affected 2 others, though we do set the QC failure status...
by OB.DAAC - SeanBailey
Fri Apr 25, 2025 2:54 pm America/New_York
Forum: Home
Question: SeaDAS RSB LUT filename issue
Replies: 4

Re: SeaDAS RSB LUT filename issue

Already done, just not released :D
by OB.DAAC - SeanBailey
Fri Apr 25, 2025 2:53 pm America/New_York
Forum: Home
Question: local_planet error???
Replies: 5

Re: local_planet error???

Andrew,

It's a wee little thing: l1bfile_mod instead of l1bfile_img
l2gen requires the moderate resolution bands (750m), and cannot run on the imagery resolution (375m). You can output both, if you like, just pass l2gen the MOD file.

Sean
by OB.DAAC - SeanBailey
Fri Apr 25, 2025 10:06 am America/New_York
Forum: Home
Question: data aggregation method?
Replies: 1

Re: data aggregation method?

The binning uses a naive mean for aggregating spatially and temporally. While it is old, the original documentation for the binner is still (mostly) valid: https://oceancolor.gsfc.nasa.gov/resources/docs/technical/seawifs_reports/prelaunch/vol32_abs/ (e.g. ignore anything mentioning maximum likeliho...
by OB.DAAC - SeanBailey
Fri Apr 25, 2025 9:54 am America/New_York
Forum: Home
Question: Inquiry about the RGB preview image of L2 data
Replies: 2

Re: Inquiry about the RGB preview image of L2 data

I assume you are referring to the deprecated https://oceancolor.gsfc.nasa.gov/cgi/browse.pl utility. The Earthdata Search tool does provide granule-level browse files for collections where these exist. We are still in the process of generating the browse imagery for many of the collections that were...