Search found 11 matches

by leon_c
Fri Nov 25, 2022 12:07 pm America/New_York
Forum: Questions/Comments
Question: Data level distinction?
Replies: 4

Re: Data level distinction?

Combining the two sources it is implicitly implied that L is the only level 1 physical variable, everything else is level 2. Thanks!

As for suggestions, I reckon some tacit examples of data levels in the documentation would be of great use.
Thank you once again! :D
by leon_c
Fri Nov 25, 2022 10:43 am America/New_York
Forum: Questions/Comments
Question: Data level distinction?
Replies: 4

Re: Data level distinction?

Hi!
Thanks for the reply. I'm aware of the documentatiton, but the term "geophysical" is still too vague to me and doesn't really help me place radiance and/or reflectance into level 1 or 2...
by leon_c
Thu Nov 24, 2022 4:30 am America/New_York
Forum: Questions/Comments
Question: Data level distinction?
Replies: 4

Data level distinction?

Hi! I'm having some trouble grasping the distinction between data levels and actual physical interpretation of data. Say we are talking about chlorophyll concentration: level 1 would include both radiance L (power of the light radiation at specific wavelength per unit solid angle per unit area) and ...
by leon_c
Mon Jul 04, 2022 5:06 am America/New_York
Forum: Questions/Comments
Question: Download script error?
Replies: 1

Download script error?

Hi all! I'm trying to download some files from the GHRSST Level 4 MUR Global Foundation Sea Surface Temperature Analysis (v4.1) set via the download script. However, upon entering my credentials I get this message: ./dl.sh: command substitution: line 47: syntax error near unexpected token `(' ./dl.s...
by leon_c
Thu Feb 03, 2022 6:15 am America/New_York
Forum: Questions/Comments
Question: What exaclty are Level 0 and Level 1 data?
Replies: 3

Re: What exaclty are Level 0 and Level 1 data?

Thanks for the advice!

So L1 data is radiance, but the L0 is still a bit vague to me, at least physically.

"Production Data Set (PDS) is the raw instrument package" would that be the measured product of photovoltaic/photoelectirc effect?

Thank you!
by leon_c
Wed Feb 02, 2022 4:19 pm America/New_York
Forum: Questions/Comments
Question: What exaclty are Level 0 and Level 1 data?
Replies: 3

What exaclty are Level 0 and Level 1 data?

Hi! I have a question regarding the nature of Level 0 and Level 1 data as described in the "Data Processing Levels". What exactly is "Reconstructed, unprocessed instrument and payload data" at Level 0? Is it electrical signals (voltage, frequency...), and is Level 1 data then rad...
by leon_c
Tue Dec 07, 2021 8:20 am America/New_York
Forum: Questions/Comments
Question: Bulk data extraction using python?
Replies: 2

Re: Bulk data extraction using python?

Thank you very much!
I'll compare this method with post-download extraction, see what works best for me.

Thank you once again!
by leon_c
Mon Dec 06, 2021 6:12 am America/New_York
Forum: Questions/Comments
Question: Bulk data extraction using python?
Replies: 2

Bulk data extraction using python?

Hello! Is there a way to modify the downloading script to automatically extract desired region using python? I've figured the "order" of the URLs when downloading data for the whole globe, but is there a way to download pre-extracted data, as opposed to extracting the region after download...
by leon_c
Mon Jun 07, 2021 11:23 am America/New_York
Forum: Questions/Comments
Question: Chlorophyll_a data retrieval
Replies: 4

Re: Chlorophyll_a data retrieval

Thanks for your reply! I will look into it.

But the thing that worries me is, when the bin file is opened in Python using xarray, I get the result posted in the images. It's almost as if the file is "empty", but it's not.
by leon_c
Sun Jun 06, 2021 3:01 pm America/New_York
Forum: Questions/Comments
Question: Chlorophyll_a data retrieval
Replies: 4

Re: Chlorophyll_a data retrieval

Figured it out. nan files was data over land, or missing data. Everything works fine. :)