Search found 52 matches
- Fri Oct 21, 2022 9:37 am America/New_York
- Forum: Questions/Comments
- Question: absorption data due to gelbstoff and detritus at 443nm
- Replies: 5
Re: absorption data due to gelbstoff and detritus at 443nm
Hi, We do noticed the issue and is looking for the reason. While waiting for the color bar to show up, you can also download the l3map files and open it in SeaDAS (https://seadas.gsfc.nasa.gov/) to manipulate the images - zoom in to your interested region, see the variation over time, and do further...
- Mon Oct 10, 2022 11:22 am America/New_York
- Forum: Questions/Comments
- Question: NASA Datasets for the OBSEA CTD calibration and ecological analysis.
- Replies: 1
Re: NASA Datasets for the OBSEA CTD calibration and ecological analysis.
Hi Marco, You can use L1/l2 browser (https://oceancolor.gsfc.nasa.gov/cgi/browse.pl) to order and download the data for your study area at a particular period of time. Here is the help page on how to use the l1/l2 browser: https://oceancolor.gsfc.nasa.gov/browse_help/top_level/ Let us know if you st...
- Thu Sep 22, 2022 9:51 am America/New_York
- Forum: Questions/Comments
- Question: wget download of order manifest not working
- Replies: 5
Re: wget download of order manifest not working
I think the problem could be from the bulk downloading you are trying to do. When using wget to download more than one file, you can put all the urls (e.g. https://oceandata.sci.gsfc.nasa.gov/ob/getfile/T2017004001500.L1A_LAC.bz2) into a txt file (such as required_files.txt), then use the following ...
- Tue Sep 20, 2022 2:32 pm America/New_York
- Forum: Questions/Comments
- Question: wget download of order manifest not working
- Replies: 5
Re: wget download of order manifest not working
You may need to configure your username and password for authentication using a .netrc file following the instructions on the following page:
https://oceancolor.gsfc.nasa.gov/data/download_methods/#netrc
https://oceancolor.gsfc.nasa.gov/data/download_methods/#netrc
- Thu Sep 08, 2022 11:19 am America/New_York
- Forum: Questions/Comments
- Question: MODISL2 hdf to tiff and reprojection
- Replies: 6
Re: MODISL2 hdf to tiff and reprojection
Hi,
Do you mind providing more information about the MODIS L2 data that you are using? Where did you download the file? What is the original MODIS L2 filename?
Thank you,
Guoqing
Do you mind providing more information about the MODIS L2 data that you are using? Where did you download the file? What is the original MODIS L2 filename?
Thank you,
Guoqing
- Mon Aug 22, 2022 3:39 pm America/New_York
- Forum: Questions/Comments
- Question: how to read data from meteorological data in ocean color auxilary file using python
- Replies: 1
Re: how to read data from meteorological data in ocean color auxilary file using python
Are you referring to the meteorological climatology data (met_climatology_v2014.hdf from https://oceancolor.gsfc.nasa.gov/docs/ancillary/)? For this file, yes, there are 12 months' data. For all the months from Feb - Dec., the different parameters' name should include "_Month", such as &qu...
- Fri Aug 12, 2022 12:37 pm America/New_York
- Forum: Questions/Comments
- Question: How can I know the resolution of this dataset
- Replies: 2
Re: How can I know the resolution of this dataset
The spatial resolution for L2 JPSS-1/NOAA 20 is 750 m. On this webpage (https://www.nesdis.noaa.gov/current-satellite-missions/currently-flying/joint-polar-satellite-system/jpss-mission-and), it says JPSS covers the entire globe twice a day. You can always find the spatial resolution and much more i...
- Tue Aug 09, 2022 10:36 am America/New_York
- Forum: Questions/Comments
- Question: MODIS L1A bulk downloading
- Replies: 1
Re: MODIS L1A bulk downloading
You can try the methods suggested on these two posts:
viewtopic.php?t=2664
https://oceancolor.gsfc.nasa.gov/forum/oceancolor/topic_show.pl?tid=3081
viewtopic.php?t=2664
https://oceancolor.gsfc.nasa.gov/forum/oceancolor/topic_show.pl?tid=3081
- Mon Aug 08, 2022 3:04 pm America/New_York
- Forum: Questions/Comments
- Question: Sentinel-2 with l2gen
- Replies: 17
Re: Sentinel-2 with l2gen
Hi, The error happens because Sentinel 2A MSI lacks a band around 412nm, which means QAA (https://www.ioccg.org/groups/software.html) is not applicable to MSI. It requires 5 bands in total (412,443,490,555, and 670 nm) but MSI only has 4 of them. My suggestion is changing the iop_opt=3 to iop_opt=7 ...
- Mon Aug 08, 2022 1:15 pm America/New_York
- Forum: Questions/Comments
- Question: Extract chlorophyll -a
- Replies: 2
Re: Extract chlorophyll -a
Adding on to Bing's answer, you can following the tutorial on this page for Pixel Extraction using SeaDAS:
https://seadas.gsfc.nasa.gov/help-8.2.0/pixelExtraction/PixelExtraction.html
Guoqing
https://seadas.gsfc.nasa.gov/help-8.2.0/pixelExtraction/PixelExtraction.html
Guoqing