Search found 1167 matches

by OB.DAAC - SeanBailey
Mon Sep 20, 2021 1:24 pm America/New_York
Forum: All Questions/Comments
Question: IndexError: string index out of range
Replies: 2

Re: IndexError: string index out of range

Just making sure you're on your toes ;) We're developing a new ancillary retrieval process that will have a slightly different API from the current one. To test this new process, we needed it exposed on the external server...but in the process a wire got crossed and the old interface was inadvertent...
by OB.DAAC - SeanBailey
Fri Sep 17, 2021 8:14 am America/New_York
Forum: All Questions/Comments
Question: OLCI Vicarious Calibration Coefficients
Replies: 12

Re: OLCI Vicarious Calibration Coefficients

Anna, The coefficients were derived by me following the procedures established many years ago and published in: Bryan A. Franz, Sean W. Bailey, P. Jeremy Werdell, and Charles R. McClain, "Sensor-independent approach to the vicarious calibration of satellite ocean color radiometry," Appl. O...
by OB.DAAC - SeanBailey
Wed Sep 01, 2021 2:29 pm America/New_York
Forum: All Questions/Comments
Question: File search method
Replies: 5

Re: File search method

Remove the "-q" option and wget might show you something that will explain why it's not working for you...

Sean
by OB.DAAC - SeanBailey
Fri Aug 06, 2021 2:30 pm America/New_York
Forum: All Questions/Comments
Question: Question about Sentinel 3A data access
Replies: 1

Re: Question about Sentinel 3A data access

These Sentinel 3A (and 3B) L1B files are the same data as distributed by ESA and Eumetsat. Yes, we are planning to process these data to Level 2 and Level 3 using the NASA standard algorithms. We are finalizing the code and vicarious calibration now and expect to initiate the L2/3 processing within ...
by OB.DAAC - SeanBailey
Fri Aug 06, 2021 7:32 am America/New_York
Forum: All Questions/Comments
Question: Blank Rrs L2 VIIRS Bands
Replies: 6

Re: Blank Rrs L2 VIIRS Bands

That scene is at night, so no valid reflective solar band data to be had.

Sean
by OB.DAAC - SeanBailey
Thu Aug 05, 2021 8:41 am America/New_York
Forum: All Questions/Comments
Question: Unable to access PACE L1 data
Replies: 3

Re: Unable to access PACE L1 data

The simulated PACE data have been regenerated and are once again available for download.

Regards,
Sean
by OB.DAAC - SeanBailey
Wed Aug 04, 2021 7:17 am America/New_York
Forum: All Questions/Comments
Question: Rayleigh corrected reflectance
Replies: 1

Re: Rayleigh corrected reflectance

No, Rayleigh corrected reflectance is not one of the products available from the OB.DAAC. However, if you need this product you can download the Level 1 data and use the l2gen code distributed with SeaDAS to easily create it. The l2gen product to produce is called rhos and can be called for the wave...
by OB.DAAC - SeanBailey
Tue Aug 03, 2021 7:57 am America/New_York
Forum: All Questions/Comments
Question: Negative POC values Modis Aqua
Replies: 4

Re: Negative POC values Modis Aqua

Something isn't right with the way you are reading the data. The minimum unscaled (non-fill) value in that file (A20031522003181.L3m_MO_POC_poc_4km.nc) is -31943, which when converted to the geophysical value is 11.4 mg/m^3...which is the minimum POC value I found in the file. Even if you were to sc...
by OB.DAAC - SeanBailey
Mon Aug 02, 2021 1:11 pm America/New_York
Forum: All Questions/Comments
Question: Negative POC values Modis Aqua
Replies: 4

Re: Negative POC values Modis Aqua

The minimum POC value in that file is 8.3999. The data are stored as a scaled integer and must have the scaling applied to get the geophysical value. For this file the scale_factor is 0.2 and the add_offset is 6400. Most netCDF readers should apply this for you, but if yours does not, you would need...
by OB.DAAC - SeanBailey
Mon Aug 02, 2021 8:50 am America/New_York
Forum: All Questions/Comments
Question: Some HawkEye data not downloadable
Replies: 3

Re: Some HawkEye data not downloadable

You may have noticed that there was a one second difference in the time element of the filename. Some of the data prior to the commissioning date were reprocessed (code changes to address issues) and this reprocessing resulted in a slightly different start time (and thus filename). When a file is re...