Search found 293 matches

by GES DISC - jimacker
Fri Jul 07, 2023 2:17 pm America/New_York
Forum: Questions/Comments
Question: PIC Algorithms
Replies: 8

Re: PIC Algorithms

By the way, here is the OBDAAC page on the PIC algorithm, if you have not seen it earlier.

https://oceancolor.gsfc.nasa.gov/resources/atbd/pic/
by GES DISC - jimacker
Fri Jul 07, 2023 2:07 pm America/New_York
Forum: Questions/Comments
Question: PIC Algorithms
Replies: 8

Re: PIC Algorithms

At this point you have gone beyond my basic understanding of the PIC algorithm, so I would recommend further correspondence with the OBDAAC staff. I will add the "OBDAAC" tag to this thread. It is my expectation that the chl-a product does not provide a good estimate of chlorophyll in Ehux.
by GES DISC - jimacker
Fri Jul 07, 2023 1:46 pm America/New_York
Forum: Questions/Comments
Question: PIC Algorithms
Replies: 8

Re: PIC Algorithms

That's a good question. As I recall, the high reflectivity of the coccolithophores makes it difficult to properly estimate chlorophyll in cocco blooms. I think (though I can be corrected) that chl-a processing includes a coccolithophore bloom mask because of that interference. I.e., so much light is...
by GES DISC - jimacker
Thu Jun 29, 2023 12:16 pm America/New_York
Forum: Questions/Comments
Question: Regarding bins in MERRA
Replies: 3

Re: Regarding bins in MERRA

Thank you for that information. The sea salt bin definitions are listed in this document:

https://gmao.gsfc.nasa.gov/reanalysis/MERRA-2/FAQ/Dust.pdf

Please reply for further information and assistance, if necessary.
by GES DISC - jimacker
Wed Jun 28, 2023 4:33 pm America/New_York
Forum: Questions/Comments
Question: Regarding bins in MERRA
Replies: 3

Re: Regarding bins in MERRA

Regarding your question, can you provide a MERRA-2 document or web page where the term "bin" is used? Bin commonly refers to a data storage location in which all valid observations for a particular spatial resolution are kept, until averaging over a time period is performed to provide a va...
by GES DISC - jimacker
Tue Jun 27, 2023 11:54 am America/New_York
Forum: Questions/Comments
Question: Getting data for a limited area
Replies: 5

Re: Getting data for a limited area

I'm glad you found this information useful. Can we assist you with the use of Giovanni?
by GES DISC - jimacker
Mon Jun 26, 2023 2:25 pm America/New_York
Forum: Questions/Comments
Question: Getting data for a limited area
Replies: 5

Re: Getting data for a limited area

Feel free to ask more questions here, and also utilize our Help documentation. If you are unfamiliar with Giovanni, the User Guide should be useful. https://giovanni.gsfc.nasa.gov/giovanni/doc/UsersManualworkingdocument.docx.html
by GES DISC - jimacker
Mon Jun 26, 2023 2:12 pm America/New_York
Forum: Questions/Comments
Question: Getting data for a limited area
Replies: 5

Re: Getting data for a limited area

Thomas, Hello. Though it might take some time, you could use our Giovanni system ( https://giovanni.gsfc.nasa.gov/ ) and generate time-series for specific locations, which could then be downloaded as both an image and as CSV data. Giovanni accepts lat/lon coordinates for specific locations. There ar...
by GES DISC - jimacker
Fri Jun 16, 2023 1:46 pm America/New_York
Forum: Questions/Comments
Question: MERRA-2 skin temperature, effective skin temperature
Replies: 1

Re: MERRA-2 skin temperature, effective skin temperature

Hello, I apologize for the delay in this response. I can answer part of your question, and we will ask our subject matter experts for additional information. Over most of the ocean, the MERRA-2 skin surface temperature is close to the oceanographic SST. There are larger differences in the polar regi...
by GES DISC - jimacker
Tue Jun 13, 2023 2:23 pm America/New_York
Forum: Questions/Comments
Question: Background Color
Replies: 6

Re: Background Color

It appears that you are looking at a file from the Ocean Biology Distributed Active Archive Center (OBDAAC). What tool/software are you using to examine the data? Further replies will likely be from an OBDAAC staff member - I'm asking that question to help them out in answering your query.