Search found 626 matches

by OB SeaDAS - xuanyang02
Mon Dec 13, 2021 10:03 am America/New_York
Forum: Home
Question: How do I define the area of interest scope and set the resolution of the output
Replies: 1

Re: How do I define the area of interest scope and set the resolution of the output

Are you trying to do l2gen on Sentinel 2 data?

With l2gen, you can define the area of interest in the processing tab, but I don't think you can set resolution for data other than modis.
https://seadas.gsfc.nasa.gov/help-8.0.0 ... L2gen.html
by OB SeaDAS - xuanyang02
Fri Dec 10, 2021 10:29 am America/New_York
Forum: Home
Question: Deriving chlorophyll from MODIS AQUA L1 data is Advisable
Replies: 6

Re: Deriving chlorophyll from MODIS AQUA L1 data is Advisable

Here is direct access to MODIS AQUA Data --https://oceandata.sci.gsfc.nasa.gov. (/directaccess/MODIS-Aqua/) or you can use the Level 1& 2 Browser -- https://oceancolor.gsfc.nasa.gov (/cgi/browse.pl?sen=amod) If you are not familiar with SeaDAS or NASA OB.DACC, here is an intro -- https://seadas....
by OB SeaDAS - xuanyang02
Thu Dec 09, 2021 4:12 pm America/New_York
Forum: Home
Question: Error processing from MODIS L1 to L2 in SEADAS
Replies: 1

Re: Error processing from MODIS L1 to L2 in SEADAS

In SeaDAS 7, modis_GEO.py and getanc.py are in $OCSSWROOT/scripts, and anc_utils.py is in $OCSSWROOT/scripts/modules. In SeaDAS 8, modis_GEO and getanc are in $OCSSWROOT/bin, anc_utils.py is in $OCSSWROOT/bin/seadasutils. It seems to me you are running modis_GEO.py in SeaDAS 7 on command line. I won...
by OB SeaDAS - xuanyang02
Thu Dec 09, 2021 1:11 pm America/New_York
Forum: Home
Question: Deriving chlorophyll from MODIS AQUA L1 data is Advisable
Replies: 6

Re: Deriving chlorophyll from MODIS AQUA L1 data is Advisable

In SeaDAS l2gen GUI, click Processing Option tab, you can toggle "atmocor" on -- https://seadas.gsfc.nasa.gov/help-8.1.0/processors/ProcessL2gen.html#PROCESSING_OPTIONS_TAB

Here is more regarding aer_opt: https://oceancolor.gsfc.nasa.gov (/forum/oceancolor/topic_show.pl?tid=7026)
by OB SeaDAS - xuanyang02
Thu Dec 09, 2021 11:04 am America/New_York
Forum: Home
Question: Deriving chlorophyll from MODIS AQUA L1 data is Advisable
Replies: 6

Re: Deriving chlorophyll from MODIS AQUA L1 data is Advisable

Chlor_a is available in L2 data - https://oceandata.sci.gsfc.nasa.gov. (/directaccess/MODIS-Aqua/L2/) You can also use SeaDAS to process MODIS AQUA L1A data to L2: modis_GEO: L1A -> geo https://seadas.gsfc.nasa.gov/help-8.1.0/processors/ProcessModis_GEO.html ModiS_L1B: L1A + geo - > L1B https://sead...
by OB SeaDAS - xuanyang02
Tue Dec 07, 2021 11:27 am America/New_York
Forum: Home
Question: OCSSW: Remote server is down
Replies: 11

Re: OCSSW: Remote server is down

OB SeaDAS - xuanyang02 wrote: Mon Nov 15, 2021 3:48 pm America/New_York To process SeaDAS OCSSW in Windows, you need to do client-server configuration first. Please follow the instructions in https://seadas.gsfc.nasa.gov/client_server/ to
1. Installing an OCSSW Server
2. Configure the Virtual Machine
3. Deploy the OCSSW Web Services Package
by OB SeaDAS - xuanyang02
Mon Nov 22, 2021 10:37 am America/New_York
Forum: Home
Question: L3 Browser extract data error
Replies: 12

Re: L3 Browser extract data error

You should have AQUA_MODIS.20160101_20161231.L3b.YR.SST.x.nc AQUA_MODIS.20170101_20171231.L3b.YR.SST.x.nc AQUA_MODIS.20180101_20181231.L3b.YR.SST.x.nc AQUA_MODIS.20190101_20191231.L3b.YR.SST.x.nc in your SSTfiles rather than 1 AQUA_MODIS.20160101_20161231.L3b.YR.SST.x.nc 2 AQUA_MODIS.20170101_201712...
by OB SeaDAS - xuanyang02
Mon Nov 22, 2021 9:55 am America/New_York
Forum: Home
Question: L3 Browser extract data error
Replies: 12

Re: L3 Browser extract data error

Select input_files.txt as your ifile in l3bin GUI. See the attached image. Screen Shot 2021-11-22 at 9.46.31 AM.png The content of your input_files.txt should be: AQUA_MODIS.20160101_20161231.L3b.YR.SST.nc AQUA_MODIS.20170101_20171231.L3b.YR.SST.nc AQUA_MODIS.20180101_20181231.L3b.YR.SST.nc AQUA_MOD...
by OB SeaDAS - xuanyang02
Mon Nov 22, 2021 9:21 am America/New_York
Forum: Home
Question: Why does hicO's Lt(top of atmosphere) data exceed 1?
Replies: 9

Re: Why does hicO's Lt(top of atmosphere) data exceed 1?

The unit of Lt in HICO L1B is W/m^2/micrometer/sr.
by OB SeaDAS - xuanyang02
Mon Nov 22, 2021 9:09 am America/New_York
Forum: Home
Question: How to generate L3M product from L1B data source?
Replies: 3

Re: How to generate L3M product from L1B data source?

l2bin creates a Level 3 bin file (L3b) from one or more Level 2 input files, and l3mapgen creates a Level 3 mapped image (L3m) from a Level 3 bin file. See https://seadas.gsfc.nasa.gov/help-8.1.0/processors/ProcessL2bin.html https://seadas.gsfc.nasa.gov/help-8.1.0/processors/ProcessL3mapgen.html htt...