Search found 107 matches

by OB General Science - guoqingw
Wed Sep 18, 2024 4:36 pm America/New_York
Forum: Home
Question: Missing time variable in netcdf files
Replies: 1

Re: Missing time variable in netcdf files

Hello, As indicated in your variable output, the following variables are present: 'time_coverage_start': '2000-02-25T21:10:01.000Z', 'time_coverage_end': '2000-02-26T23:49:59.000Z' These represent the start and end dates and times for this L3 Chlorophyll-a (Chla) map. Since the L3 Chla map is a merg...
by OB General Science - guoqingw
Wed Sep 18, 2024 12:20 pm America/New_York
Forum: Home
Question: Can't log into my subscription. 616 Is there a problem?
Replies: 1

Re: Can't log into my subscription. 616 Is there a problem?

Hello,

Could you please confirm if this issue is still occurring?

Thanks,
Guoqing
by OB General Science - guoqingw
Wed Sep 18, 2024 11:25 am America/New_York
Forum: Home
Question: Can OCSSW tool be used for radiometric calibration?
Replies: 3

Re: Can OCSSW tool be used for radiometric calibration?

I think you are referring to the L1bgen. Here is the link to the help page: https://seadas.gsfc.nasa.gov/help-9.0.0/processors/ProcessL1bgen_generic.html

Let us know if this helps.
by OB General Science - guoqingw
Tue Sep 10, 2024 5:14 pm America/New_York
Forum: Home
Question: MODIS-aqua L2 PIC R2022.0 validation
Replies: 1

Re: MODIS-aqua L2 PIC R2022.0 validation

1) Satellite measurements are averages taken from a 5×5 pixel box centered around the location of the in situ measurement. You can find more details here: https://seabass.gsfc.nasa.gov/wiki/validation_description 2) For PIC, you can refer to the ATBD and the corresponding references for details: htt...
by OB General Science - guoqingw
Tue Aug 13, 2024 11:31 pm America/New_York
Forum: Home
Question: phycocyanin data
Replies: 2

Re: phycocyanin data

Adding to Chris's reply, there are several different sets of pure water absorption coefficients from lab measurements. It appears the authors didn’t cite the corresponding article in that publication. The best way to obtain the exact same data is by contacting the authors. However, the coefficients ...
by OB General Science - guoqingw
Thu Aug 08, 2024 12:40 am America/New_York
Forum: Home
Question: Converting SWOT KaRIn Low Rate Sea Surface Height Products to GeoTIFF
Replies: 3

Re: Converting SWOT KaRIn Low Rate Sea Surface Height Products to GeoTIFF

Hello,

I believe the PODAAC team can provide a thorough answer to your question. Please replace #OBDAAC with #PODAAC.

Thank you!
by OB General Science - guoqingw
Thu Aug 08, 2024 12:01 am America/New_York
Forum: Home
Question: Missing Data
Replies: 2

Re: Missing Data

Sun glint during the summer months is another reason for the missing data in MODIS products over the Arabian Sea.
by OB General Science - guoqingw
Wed Jul 17, 2024 10:42 am America/New_York
Forum: Home
Question: CHLOROPHYLL CONCENTRATION (1 MONTH - AQUA/MODIS)
Replies: 2

Re: CHLOROPHYLL CONCENTRATION (1 MONTH - AQUA/MODIS)

You can also download the MODIS monthly Chla from L3/4 browser, or try the methods described here: https://oceancolor.gsfc.nasa.gov/data/download_methods/

Let us know if you find these helpful.
Guoqing
by OB General Science - guoqingw
Mon Jul 15, 2024 10:56 am America/New_York
Forum: Home
Question: How to download a large number of MODIS L2 Ocean Color data files to a PC
Replies: 1

Re: How to download a large number of MODIS L2 Ocean Color data files to a PC

Hello,

You can download multiple files using the methods described on this webpage: Data Search and Download Methods.

Please try these methods and let us know if you find them helpful.

Thank you.
Guoqing
by OB General Science - guoqingw
Fri Jul 12, 2024 2:23 pm America/New_York
Forum: Home
Question: Unable to access Level 1&2 Browser Help from South Africa
Replies: 7

Re: Unable to access Level 1&2 Browser Help from South Africa

Hello,

Do you have access to other ocean color webpages? If not, please send a note to:

connection_problems@oceancolor.sci.gsfc.nasa.gov

And indicate the IP address(es).

Thank you.
Guoqing