Search found 264 matches
- Mon Feb 08, 2021 3:05 pm America/New_York
- Forum: Home
- Question: MODIS 1640 nm band
- Replies: 3
MODIS 1640 nm band
Your picture did not come through, but if you are looking at L1 or L2 MODIS files you will see stripes due to the bowtie effect. For MODIS at 1km you will see stripes every 10 lines, 500m at 20 lines, 250 at 40 lines. It is worse off nadir. See this:MODIShttps://oceancolor.gsfc.nas...
- Thu Feb 04, 2021 9:32 am America/New_York
- Forum: Home
- Question: How to automatically choose and download ancillary data when run ocssw with parfile
- Replies: 3
How to automatically choose and download ancillary data when run ocssw with parfile
There is a program called "getanc" that will download the ancillary files and create a par file for you given the input file. On the command line run this:getanc COMS_GOCI_L1B_GA_20110402001644.he5 ancillary_data.dbEncountered more than 1 Scene Start time tag. Using 1st value.Encount...
- Thu Jan 28, 2021 11:27 am America/New_York
- Forum: Home
- Question: The value is nan for chlor_a from MODIS
- Replies: 3
The value is nan for chlor_a from MODIS
Looks like this is a night time file. All pixels PRODFAIL and HISOLZEN. L2gen flagged it as :day_night_flag = "Night"
can't get chl at night.
don
can't get chl at night.
don
- Wed Jan 27, 2021 8:54 am America/New_York
- Forum: Home
- Question: Chlorophyll concentration OCI VS Chlorophyll Concentration OCX Algorithm
- Replies: 3
Chlorophyll concentration OCI VS Chlorophyll Concentration OCX Algorithm
The size of the OCI and OCX are both float, so they will be the same size in an L2 file. The only way the L2 files could be a different size is if more products were put on one of the files. You can use "ncdump -h" on the command line or look at the list of bands using SeaDAS.
don
don
- Wed Dec 02, 2020 11:08 am America/New_York
- Forum: Home
- Question: All realtime processing failing
- Replies: 2
- Fri Oct 23, 2020 1:54 pm America/New_York
- Forum: Home
- Question: Tiled SIN Grid for Ocean Color Products
- Replies: 3
Tiled SIN Grid for Ocean Color Products
Not sure about L3 bin files that you get from LADS. If you are using bin files you get from our ocean color website or are produced by our programs l2bin or l3bin, you can use l3mapgen to make the GEOTIFF files. Using l3mapgen you can pick your projection, output format, geographic limits (nor...
- Fri Sep 11, 2020 12:14 pm America/New_York
- Forum: Home
- Question: HICO L-2 Processing
- Replies: 11
HICO L-2 Processing
As I recall the working dir that the GUI uses is the directory that the ifile is in. I believe that was an attempt to keep me sane when SeaDAS was launched by the Finder on a Mac or some linux desktop launcher. I would have to go back and check the Java code that I wrote many years ago to be s...
- Wed Sep 09, 2020 12:31 pm America/New_York
- Forum: Home
- Question: Runing GEO and L1B processed in parallel
- Replies: 3
Runing GEO and L1B processed in parallel
I guess I would take the easy way out. Make a directory for each parallel process and move a set of files to each directory. Process each directory with one process. When done move all the files back to the original directory. Moving a file just changes a pointer to the actua...
- Wed Aug 26, 2020 3:14 pm America/New_York
- Forum: Home
- Question: OLI L2 data
- Replies: 6
OLI L2 data
l2flags is a bit field. Your example breaks down like this:
decimal = 2112
hex = 0x0840
binary = 0000 1000 0100 0000
That means bit 6 and bit 11 are on. The first bit is on the right and you start numbering the bits at 0
bit 6 = 64 = COASTZ
bit 11 = 2048 = TURBIDW
don
decimal = 2112
hex = 0x0840
binary = 0000 1000 0100 0000
That means bit 6 and bit 11 are on. The first bit is on the right and you start numbering the bits at 0
bit 6 = 64 = COASTZ
bit 11 = 2048 = TURBIDW
don
- Thu Jul 30, 2020 9:13 am America/New_York
- Forum: Home
- Question: gpt.sh reprojection issue
- Replies: 3
gpt.sh reprojection issue
Your XML file looks like you are asking for 9 millimeter wide pixels. That would be too many pixels, which you do not have enough memory to store. You are trying to allocate about 5 PetaBytes of memory.
don
don