Search found 140 matches
- Wed Aug 08, 2018 8:55 am America/New_York
- Forum: Questions/Comments
- Question: Depth - Chlorophyll concentration, OCI Algorithm
- Replies: 1
Depth - Chlorophyll concentration, OCI Algorithm
Hi Isabella,It all depends on the clarity of the water. In very clear,low-chlorophyll waters, an orbiting sensor like MODIScan sense photons reflected from 30 meters below thesurface. In very turbid or very high-chlorophyll waters,all of the received water-leaving radiance comes fromthe ...
- Tue Jul 10, 2018 10:13 am America/New_York
- Forum: Questions/Comments
- Question: Extracting Cholorophyll a concentration for one station and 1000 km around of it
- Replies: 14
Extracting Cholorophyll a concentration for one station and 1000 km around of it
Marjan,The OCSSW processing programs are distributed with SeaDAS.You may wish to spend some time perusing our site to learn aboutocean-color remote sensing.https://oceancolor.gsfc.nasa.gov/https://oceancolor.gsfc.nasa.gov/products/https://oceancolor.gsfc.nasa.gov/atbd/https://www.youtube.com/user/na...
- Tue Jul 10, 2018 9:57 am America/New_York
- Forum: Questions/Comments
- Question: I could not get any result for January around of my station
- Replies: 1
I could not get any result for January around of my station
Hi Marjan,Because of the MODIS swath width and the division of the data into5-minute chunks, there is no way that a single MODIS scene can containthe entire region within 1200 kilometers of your station. To get anyresults, you need to either reduce the percentage of your area ofinterest ...
- Tue Jul 10, 2018 9:25 am America/New_York
- Forum: Questions/Comments
- Question: Detailed questions about level2 data
- Replies: 1
Detailed questions about level2 data
Hi,1. Yes, each MODIS file we archive covers 5 minutes of data collection. VIIRS data are split into 6-minute chunks. Other data sets such as SeaWiFS have variable length files.2. There was no attachment, but I'll assume you are referring to an...
- Tue Jul 03, 2018 4:54 pm America/New_York
- Forum: Questions/Comments
- Question: I can not see MASKS in my data
- Replies: 4
I can not see MASKS in my data
Hi,Have a look at the following tutorial that our own Danny recorded.https://www.youtube.com/watch?v=kI6x3sDjFQQSee alsohttps://oceancolor.gsfc.nasa.gov/atbd/sst/flag/for information on SST flags and SST quality levelsandhttps://oceancolor.gsfc.nasa.gov/atbd/ocl2flags/for information on our levgel-2...
- Tue Jun 12, 2018 4:33 pm America/New_York
- Forum: Questions/Comments
- Question: VIIRS Level 1B data
- Replies: 1
VIIRS Level 1B data
Hi,
We do not archive VIIRS L1B data, but you can generate them
yourself using the SeaDAS software we provide.
See the libgen help page.
https://seadas.gsfc.nasa.gov/help/seadas-processing/ProcessL1bgen.html
Regards,
Norman
We do not archive VIIRS L1B data, but you can generate them
yourself using the SeaDAS software we provide.
See the libgen help page.
https://seadas.gsfc.nasa.gov/help/seadas-processing/ProcessL1bgen.html
Regards,
Norman
- Wed May 23, 2018 4:58 pm America/New_York
- Forum: Questions/Comments
- Question: No lat/lon info in Meris L3 chlor_a
- Replies: 2
No lat/lon info in Meris L3 chlor_a
Hi Z,You do not need to read lat/lon information for any of our level-3, mapped files (L3m)because the data are already in a known projection, namely, plate carrée (alsoknown as simple cylindrical) centered on the prime meridian.We have not yet reprocessed our MERIS data holdings, so the level...
- Thu Feb 15, 2018 9:21 am America/New_York
- Forum: Questions/Comments
- Question: L1/L2 Browser error for large searches
- Replies: 8
L1/L2 Browser error for large searches
Hi,Yes, your search is probably timing out. I get the same result. I kept halving thesearch time period until I got one which works (1 Jan - 15 Feb 2004). That searchreturned 572 scenes.https://oceancolor.gsfc.nasa.gov/cgi/browse.pl?sub=level1or2list&per=CSTM&day=12418+46&a...
- Tue Jan 30, 2018 8:58 am America/New_York
- Forum: Questions/Comments
- Question: Nomenclature MODIS files
- Replies: 5
- Fri Jan 26, 2018 11:44 am America/New_York
- Forum: Questions/Comments
- Question: MODISA R2018 Climatology products missing?
- Replies: 1
MODISA R2018 Climatology products missing?
Hi Toby,
Thanks for pointing this out. The missing climatologies are being
filled in.
Norman
Thanks for pointing this out. The missing climatologies are being
filled in.
Norman