Search found 1400 matches
- Thu Feb 02, 2023 11:15 am America/New_York
- Forum: Questions/Comments
- Question: modis_GEO -- Percent valid data (46.00) is less than threshold (95.00)
- Replies: 2
Re: modis_GEO -- Percent valid data (46.00) is less than threshold (95.00)
It's not you, or the code. There is some bad orbit data from 1/31. If we get updated att/eph data that corrects the problem, the data will be reprocessed (you'd need to pull the updated files, but I do not know when or even if they will be available). If you look at https://oceandata.sci.gsfc.nasa.g...
- Thu Feb 02, 2023 9:18 am America/New_York
- Forum: Questions/Comments
- Question: mapgen script with MODIS L2
- Replies: 4
Re: mapgen script with MODIS L2
The binner cannont bin the flags because they are a bitwise value that cannot be expressed as a floating point value. The binner uses the l2_flags to exclude data during the binning process - which is what the options you defined in the graph were doing for the band maths step. The flaguse parameter...
- Fri Jan 20, 2023 7:30 am America/New_York
- Forum: Questions/Comments
- Question: Oceandata missing SEAICE_NSIDC_24h.hdf ancillaries for 2023, except DOY 001
- Replies: 1
Re: Oceandata missing SEAICE_NSIDC_24h.hdf ancillaries for 2023, except DOY 001
The NSIDC-based SEAICE files have been deprecated and are no longer produced. We now use the sea ice fraction field in the CMC SST file to set the flag. The l2gen icefile option accepts this file.
Sean
Sean
- Thu Jan 12, 2023 8:02 am America/New_York
- Forum: Questions/Comments
- Question: l1bgen_modisa issue
- Replies: 2
Re: l1bgen_modisa issue
If you are running l1bgen_modisa directly, you'd need to populate the required environment variables and create the appropriate PCF file. It's quite tedious
This is why there is a script called modis_L1B.
try:
Sean

try:
Code: Select all
$ modis_L1B A2012039091000.L1A_LAC
- Thu Jan 12, 2023 6:34 am America/New_York
- Forum: Questions/Comments
- Question: Difference at 4 decimals of geolocation files
- Replies: 3
Re: Difference at 4 decimals of geolocation files
The geolocation product produced by the OBPG is used to support processing through the l2gen program. l2gen performs an internal terrain correction, so we disable terrain correction in the generation of the geolocation files. This is the reason for the differences you are seeing. For the ocean at me...
- Wed Jan 11, 2023 1:00 pm America/New_York
- Forum: Questions/Comments
- Question: Level-3 binned data on ERRDAP
- Replies: 2
Re: Level-3 binned data on ERRDAP
I can pretty much guarantee that ERRDAP does not support our binned format. It is a rather peculiar one, great for storing sparse data and combining with other similarly stored data, but not so much for ease of reading. If you want your data to be supported by an ERRDAP server, it will likely need t...
- Fri Jan 06, 2023 1:40 pm America/New_York
- Forum: Questions/Comments
- Question: Level 2 SubscriptionS
- Replies: 5
Re: Level 2 SubscriptionS
We have identified the root cause of this issue. On January 4th, a bug in our subscription manager was identified and corrected. This bug allowed expired subscriptions to have data staged for them if another, non-expired subscription would have those data staged (this only affected non-extracted sub...
- Thu Jan 05, 2023 2:53 pm America/New_York
- Forum: Questions/Comments
- Question: Some missing VIIRS-SNPP L3m data day directories
- Replies: 2
Re: Some missing VIIRS-SNPP L3m data day directories
Vardis, SNPP-VIIRS was in safehold from sometime mid-day the 26th of July through mid-day the 10th of August. No data was collected, so no directories created for those days. Some longer temporal data (e.g. 8D, R32, etc.) do exist, and directories for the first day those periods exist. For example, ...
- Sat Dec 17, 2022 1:29 pm America/New_York
- Forum: Questions/Comments
- Question: SeaDAS-MOD04
- Replies: 8
Re: SeaDAS-MOD04
I'll reiterate that it is not a bug in SeaDAS. The HDF file is incorrectly written. Even the HDF4 user guide states the assumption that the fillValue should be of the same type as the data set: "SDgetfillvalue reads the fill value which has been set for the data set specified by the parameter s...
- Fri Dec 16, 2022 5:41 pm America/New_York
- Forum: Questions/Comments
- Question: SeaDAS-MOD04
- Replies: 8
Re: SeaDAS-MOD04
To be clear, the code issue was not technically a bug, rather the _FillValue defined in the MOD11 product is not appropriate when using the netCDF API to read the file. A proper netCDF file requires the fill value to be the same data type as the data set. "NA" is not an unsigned short, so ...