Search found 1162 matches

by OB.DAAC - SeanBailey
Thu Jul 22, 2021 11:42 am America/New_York
Forum: All Questions/Comments
Question: Degraded Ocean Color data
Replies: 0

Degraded Ocean Color data

We were recently alerted to an apparent issue with the ozone ancillary data used in ocean color data processing. The issue is anomalously high ozone concentrations in the region between about 30S and 50S corresponding to the AURA-OMI ground track: N202119900_O3_AURAOMI_24h_ozone.png This issue seems...
by OB.DAAC - SeanBailey
Thu Jul 22, 2021 10:18 am America/New_York
Forum: All Questions/Comments
Question: Low reflectances after l2gen processing of VIIRS SDR from CSPP
Replies: 6

Re: Low reflectances after l2gen processing of VIIRS SDR from CSPP

Silvia, Since you got a result, it's not that l2gen is no longer compatible with the SDR input, rather the issue is that the on-orbit calibration differs between the IDPS (and thus CSPP) processing and the NASA VIIRS L1 processing (as would any vicarious calibration, which I see you disabled by sett...
by OB.DAAC - SeanBailey
Tue Jul 20, 2021 8:20 am America/New_York
Forum: All Questions/Comments
Question: AURAOMI ozone files with anomalous values
Replies: 1

Re: AURAOMI ozone files with anomalous values

Jacques,
Thanks for the note. Yes, it appears that there is an issue with the ozone source. We are investigating.

Regards,
Sean
by OB.DAAC - SeanBailey
Thu Jul 15, 2021 10:40 am America/New_York
Forum: All Questions/Comments
Question: Can't access oceandata.sci.gsfc.nasa.gov
Replies: 4

Re: Can't access oceandata.sci.gsfc.nasa.gov

Mike, Please send an email to connection_problems@oceancolor.sci.gsfc.nasa.gov with as much information as possible to describe your connection issues. Some things that might be helpful: The date and time you last attempted to access the site The IP network address of your system. You may also want ...
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...