Search found 48 matches

by OB General Science - guoqingw
Wed May 24, 2023 4:04 pm America/New_York
Forum: Questions/Comments
Question: Global valid observations of ocean color products
Replies: 1

Re: Global valid observations of ocean color products

Hello, The pattern doesn't make sense to me, and this shouldn't be a problem with the products. But just in case, can you please provide more details about what you did? Did you use the whole dataset (all the available l3 Chlorophyll products) for each mission to calculate the ratio? Is the ratio ca...
by OB General Science - guoqingw
Thu May 18, 2023 12:47 pm America/New_York
Forum: Questions/Comments
Question: Chla-historical data
Replies: 1

Re: Chla-historical data

Hi Nabila,

Yes, we provide both in situ and satellite Chlorophyll-a data. Please let me know which one you are looking for. The methods to access them are a little bit different.

Guoqing
by OB General Science - guoqingw
Wed May 03, 2023 2:56 pm America/New_York
Forum: Questions/Comments
Question: Different value of MODIS Data
Replies: 1

Re: Different value of MODIS Data

Hello, The difference is a likely result. When you use the average of the whole region for the trend, the value is more likely to be consistent. But if you take a closer look at the region for a particular day, as what you do in the first figure, you'll see the data vary from coastal water to the se...
by OB General Science - guoqingw
Wed May 03, 2023 2:05 pm America/New_York
Forum: Questions/Comments
Question: Error downloading CyAN data through R httr::GET
Replies: 2

Re: Error downloading CyAN data through R httr::GET

Hello,

We recently fixed a data access issue. Please try again and let us know if the problem persists.
by OB General Science - guoqingw
Tue Mar 21, 2023 12:06 pm America/New_York
Forum: Questions/Comments
Question: Conversion of radiance to reflectance in MOBY data
Replies: 1

Re: Conversion of radiance to reflectance in MOBY data

Hi Masud,

I'm not very sure about NOAA data, but for the MOBY data provided through SeaBASS, here is a documentation with all the details: https://seabass.gsfc.nasa.gov/wiki/MOBY
Hope it helps.

Guoqing
by OB General Science - guoqingw
Fri Mar 17, 2023 12:42 pm America/New_York
Forum: Questions/Comments
Question: Pixel Raster Space on MODIS Aqua and Sentinel 2/3 for Coordinates
Replies: 2

Re: Pixel Raster Space on MODIS Aqua and Sentinel 2/3 for Coordinates

Hello, if you are using our products, our data are grid registered and the lat/lon values are the center of the pixel.
by OB General Science - guoqingw
Fri Mar 17, 2023 12:36 pm America/New_York
Forum: Questions/Comments
Question: subscription but without map and cannot subscribe to OCLI S3-B data
Replies: 4

Re: subscription but without map and cannot subscribe to OCLI S3-B data

So sorry for the delayed response. Our expert is looking into it.
by OB General Science - guoqingw
Fri Mar 17, 2023 12:26 pm America/New_York
Forum: Questions/Comments
Question: Aerosol correction is not working for Sentinel 2 MSI data
Replies: 3

Re: Aerosol correction is not working for Sentinel 2 MSI data

Hello,

Sorry for the delayed response. Have you tried again? Do you still have the same problem?
by OB General Science - guoqingw
Fri Mar 17, 2023 12:05 pm America/New_York
Forum: Questions/Comments
Question: Error in building OCSSW binaries; SeaDAS 8.2.0 Build from Source Code
Replies: 3

Re: Error in building OCSSW binaries; SeaDAS 8.2.0 Build from Source Code

Sorry for the delayed response. Do you still have the same problem?