Search found 1171 matches

by OB.DAAC - SeanBailey
Thu Jul 08, 2021 12:58 pm America/New_York
Forum: All Questions/Comments
Question: SeaDAS 8.1.0 -- MODIS GEO file
Replies: 14

Re: MODIS GEO file

On a Mac, SeaDAS tends to prefer the system installed python, which is fine, as long as it has the requests module (and it's 2.18 or newer). What is the requests library version for that?

Sean
by OB.DAAC - SeanBailey
Thu Jul 08, 2021 8:55 am America/New_York
Forum: All Questions/Comments
Question: SeaDAS 8.1.0 -- MODIS GEO file
Replies: 14

Re: MODIS GEO file

The MODIS geolocation processing requires that the attitude and ephemeris data be retrieved from the OB.DAAC servers, the VIIRS geolocation processing does not. The authentication error indicates exactly that... an error authenticating. It is only reported when the server returns an HTTP error code ...
by OB.DAAC - SeanBailey
Tue Jul 06, 2021 1:47 pm America/New_York
Forum: All Questions/Comments
Question: RRS547 MODIS Terra Data
Replies: 1

Re: RRS547 MODIS Terra Data

You can use the L3 browser to order extracted data:

https://oceancolor.gsfc.nasa.gov/l3/

Regards,
Sean
by OB.DAAC - SeanBailey
Wed Jun 23, 2021 11:41 am America/New_York
Forum: All Questions/Comments
Question: OCSSW Installation Error
Replies: 14

Re: OCSSW Installation Error

Amita,

See https://packaging.python.org/tutorials/ ... -packages/

or if you don't want to read :D

Code: Select all

python3 -m pip install --upgrade pip setuptools wheel
Sean
by OB.DAAC - SeanBailey
Wed Jun 23, 2021 9:51 am America/New_York
Forum: All Questions/Comments
Question: OCSSW Installation Error
Replies: 14

Re: OCSSW Installation Error

Amita,

The requests module is a python module and is required by the scripts that connect to our servers. See: https://seadas.gsfc.nasa.gov/requirements/

Sean
by OB.DAAC - SeanBailey
Mon Jun 21, 2021 9:07 am America/New_York
Forum: All Questions/Comments
Question: Rayleigh optical thickness for airborne sensors
Replies: 2

Re: Rayleigh optical thickness for airborne sensors

The estimates of top-of-atmosphere Rayleigh radiance in the processing of satellite-based ocean color sensors requires radiative transfer simulations that account for the spectral bandpass of the sensor and an estimate of the surface component as modulated by a roughened ocean (using windspeed to de...
by OB.DAAC - SeanBailey
Thu Jun 17, 2021 12:09 pm America/New_York
Forum: All Questions/Comments
Question: turbidity flag
Replies: 1

Re: turbidity flag

That's pretty much it. The closest band to 670nm is used. If the Rrs in that band is > 0.012, the flag is set.

Sean
by OB.DAAC - SeanBailey
Wed Jun 16, 2021 4:46 pm America/New_York
Forum: All Questions/Comments
Question: L2 Flags being produced instead of selected bands
Replies: 6

Re: L2 Flags being produced instead of selected bands

Nothing jumps out as a problem in the ncdump, so maybe the reader is just getting confused by the 3D products. Specifying <product>_nnn will work as the "_nnn" (or _vvv) gets expanded to the wavelength list. NOT specifying one (i.e. just 'Lt' or 'Rrs') generates a 3D dataset. You could try...
by OB.DAAC - SeanBailey
Wed Jun 16, 2021 12:46 pm America/New_York
Forum: All Questions/Comments
Question: reprojection information not recognized
Replies: 1

Re: reprojection information not recognized

The HDF5 export does include the reprojection information, but may not be stored in a way that is supported by ENVI or E-COGNITION. You might try one of the other output formats, but you may just have to provide the information manually to these external tools.

Sean
by OB.DAAC - SeanBailey
Wed Jun 16, 2021 10:47 am America/New_York
Forum: All Questions/Comments
Question: OLCI Data Download
Replies: 4

Re: OLCI Data Download

This is a case of a 'near miss'. The resolution of the bins used in the spatial matching is about 72km.
https://oceancolor.gsfc.nasa.gov/browse ... uadsphere/

The edge of this scene gets tantalizingly close to the Bay:
Screen Shot 2021-06-16 at 10.36.40 AM.png
Screen Shot 2021-06-16 at 10.36.40 AM.png (412.09 KiB) Not viewed yet
Sean