Hourly or Daily sea surface temperature

Please enter here to ask a question about any NASA Science related topics!
Post Reply
xzsawq21
Posts: 3
Joined: Fri Apr 02, 2021 4:54 pm America/New_York

Hourly or Daily sea surface temperature

by xzsawq21 » Fri Apr 02, 2021 5:07 pm America/New_York

Hello, I have emailed to your support team and He replied me. I want to download hourly (daily) sea surface temperature. He said me "Giovanni does not have the daily SST data products, partly due to the lack of coverage caused by cloud cover" and He recommended me to use the following link:
https://oceancolor.gsfc.nasa.gov/cgi/browse.pl?sen=amod

Actually I want to report the maximum temperature of sea surface in a specific area.
could you please help me? when I went to the link I could choose the area, the date and checked the MODIS-AQUA sensor. but I don't know what time it is! I'm very confused.

Thanks

Tags:

OB SeaDAS - xuanyang02
Subject Matter Expert
Subject Matter Expert
Posts: 172
Joined: Tue Feb 09, 2021 5:42 pm America/New_York
Answers: 1

Re: Hourly or Daily sea surface temperature

by OB SeaDAS - xuanyang02 » Mon Apr 05, 2021 10:56 am America/New_York

See if this link would work better?
https://oceandata.sci.gsfc.nasa.gov/MODIS-Aqua

xzsawq21
Posts: 3
Joined: Fri Apr 02, 2021 4:54 pm America/New_York

Re: Hourly or Daily sea surface temperature

by xzsawq21 » Mon Apr 05, 2021 12:29 pm America/New_York

OK but for example I choose L2 Level and go to 31_DECEMBER_2020:
https://oceandata.sci.gsfc.nasa.gov/MOD ... /2020/366/

1- I see many dateset but for a specific area which one I should download?

2- my second question, what time of day is the date captured? it's important bcoz usually the maximum temperate occurs at 12:00 PM to 14:00 PM

Thanks

OB SeaDAS - xuanyang02
Subject Matter Expert
Subject Matter Expert
Posts: 172
Joined: Tue Feb 09, 2021 5:42 pm America/New_York
Answers: 1

Re: Hourly or Daily sea surface temperature

by OB SeaDAS - xuanyang02 » Mon Apr 05, 2021 1:47 pm America/New_York

Maybe you should stick to this link if you need to find data for a specific area. https://oceancolor.gsfc.nasa.gov/cgi/browse.pl?sen=amod

Here is the link to OBPG File Naming Convention: https://oceancolor.gsfc.nasa.gov/docs/f ... onvention/

For AQUA_MODIS.20201231T195000.L2.SST.nc as an example:
The time is 19:50:00, December 31, 2020

xzsawq21
Posts: 3
Joined: Fri Apr 02, 2021 4:54 pm America/New_York

Re: Hourly or Daily sea surface temperature

by xzsawq21 » Tue Apr 06, 2021 1:17 am America/New_York

Thank you so mush, for example I've chosen a specific area and a day as following:
https://ibb.co/L6qvywP

*now I see three L2 level layers, as you see in the end of the names there are OC, IOP and SST respectively. I found a link to discuss about the Product Definitions:
https://oceancolor.gsfc.nasa.gov/docs/format/l2nc/

(But I couldn't find a clear difference between them! I just know OC means Ocean Color and SST means Sea Surface Temperature)

now for AQUA_MODIS.20201231T095501.L2.SST.nc as an example"
the time is 2020_DEC_31 and 09:55:01

*what Time Zone is the time for? (for example 09:55:01 for UTC +3:00 or another time zone)

Best Regards

gnwiii
Posts: 642
Joined: Fri Jan 29, 2021 5:51 pm America/New_York
Answers: 2

Re: Hourly or Daily sea surface temperature

by gnwiii » Tue Apr 06, 2021 9:25 am America/New_York


OB SeaDAS - xuanyang02
Subject Matter Expert
Subject Matter Expert
Posts: 172
Joined: Tue Feb 09, 2021 5:42 pm America/New_York
Answers: 1

Re: Hourly or Daily sea surface temperature

by OB SeaDAS - xuanyang02 » Tue Apr 06, 2021 10:12 am America/New_York

Thanks, George for pointing out the current naming convention. We are in the process of converting our data over to a new file naming convention. The link I posted is for the new naming convention.

OC for ocean color, SST for sea surface temperature or IOP for inherent optical properties

UTC time is used.

Post Reply