Search found 8 matches

by andrei_mitrich
Mon Apr 28, 2025 4:47 am America/New_York
Forum: Home
Question: Changes in VIIRS SNPP L1A data
Replies: 5

Re: Changes in VIIRS SNPP L1A data

Hi Sean, Thank you for the reply and explanations. I am still not quite happy with the answer. That case in the very beginning of the satellite life , Feb 18, 2012, was indeed an extreme case: I checked - we neither could produce L2 files from those L1A files though we do have those L1A files. How a...
by andrei_mitrich
Wed Apr 23, 2025 7:02 am America/New_York
Forum: Home
Question: Changes in VIIRS SNPP L1A data
Replies: 5

Re: Changes in VIIRS SNPP L1A data

Hi, When renaming to the latest convention SNPP VIIRS L1A files in our local storage, downloaded few years ago, still in format V2012049033600.L1A_SNPP.nc, I have noticed some of our local files could not be found at the NASA storage: https://oceandata.sci.gsfc.nasa.gov/directdataaccess . We always ...
by andrei_mitrich
Thu Apr 17, 2025 4:03 am America/New_York
Forum: Home
Question: Changes in VIIRS SNPP L1A data
Replies: 5

Changes in VIIRS SNPP L1A data

Hi, We have downloaded some time ago VIIRS SNPP L1A data, without last few years. Now I can see that file name format changed: instead of V2019164192400.L1A_SNPP, we see something like SNPP_VIIRS.20190613T192400.L1A.nc. The file content however, if we compare the same granules, did not change, at le...
by andrei_mitrich
Mon Apr 14, 2025 5:13 am America/New_York
Forum: Home
Question: How to find out legitimate 'short_name' parameter values for data downloads.
Replies: 2

How to find out legitimate 'short_name' parameter values for data downloads.

Hi, I am trying to search for files available for downloading for few sensors. I have one working example, for MODISA level 1A: curl "https://cmr.earthdata.nasa.gov/search/granules.csv?page_size=2000&sort_key=start_date&short_name=MODISA_L1&provider=OB_DAAC&day_night_flag=day&am...
by andrei_mitrich
Tue Jul 30, 2024 4:49 am America/New_York
Forum: Home
Question: Duplicate (overlapping) MERIS and OLCI orbits
Replies: 1

Duplicate (overlapping) MERIS and OLCI orbits

When processing L1B data to L3bin, mostly for MERIS, also for OLCI, we noticed that for about 10%-25% of all days, there are pairs of files, from one to 5 pairs daily, with partially overlapping areas; they also share the same relative number of the orbit in cycle. If including both files for each p...
by andrei_mitrich
Mon Oct 30, 2023 12:43 pm America/New_York
Forum: Home
Question: geolocate_viirs problem
Replies: 2

Re: geolocate_viirs problem

I think I know the answer: the extra option should be `--viirsdem`
by andrei_mitrich
Mon Oct 30, 2023 5:14 am America/New_York
Forum: Home
Question: geolocate_viirs problem
Replies: 2

geolocate_viirs problem

Hi, I am trying to produce viirs GEO file with seadas package using geolocate_viirs command. I know VIIRS GEO files are available for downloading but sometimes it is convenient to produce those files locally. I am using the latest or one of the latest seadas releases, `--tag V2023.3` and for install...