Search found 22 matches

by lwk1542
Sun May 16, 2021 2:27 am America/New_York
Forum: All Questions/Comments
Question: the confuse about phase function of aerosol model
Replies: 4

Re: the confuse about phase function of aerosol model

THANKS for your help!
by lwk1542
Thu May 13, 2021 10:57 pm America/New_York
Forum: All Questions/Comments
Question: the confuse about phase function of aerosol model
Replies: 4

Re: the confuse about phase function of aerosol model

THANKS for your help! I was really anxious before your replying.
But, the big interpolated values exist in some LUTs(for example:aerosol_modist_r30f00v01.hdf, please see attachment). why?
by lwk1542
Thu May 06, 2021 10:00 am America/New_York
Forum: All Questions/Comments
Question: the confuse about phase function of aerosol model
Replies: 4

the confuse about phase function of aerosol model

In aerosol.c of l2gen, the model_phase() can return phase. the one part of the code is as follows. I can't find the definition of splint() in all code, so I guess it returns a volume scattering function (phase) of aerosol look-up table according to scatter angle and wavelength. I am very confuse abo...
by lwk1542
Sat Apr 03, 2021 9:50 am America/New_York
Forum: All Questions/Comments
Question: rayleigh radiance computing problem
Replies: 1

rayleigh radiance computing problem

Dr. : I computing rayleigh radiance using a code that is similar to "rayrad.pro" (https://oceancolor.gsfc.nasa.gov/cgi/idllibrary.cgi?dir=atmocorr). However, the result is different with seadas product "Lr". the scatter in the following attachment file shows difference at eight b...
by lwk1542
Wed Mar 17, 2021 12:22 pm America/New_York
Forum: All Questions/Comments
Question: how to estimate AOT for sunglint radiance calculation?
Replies: 1

how to estimate AOT for sunglint radiance calculation?

According to the code in the “atmocor2.c” and “glint.c” files,the sunglint needs to be computed before aerosol estimating. However, the aerosol optical depth is an input variable for sunglint. In the page (https://oceancolor.gsfc.nasa.gov/docs/ocssw/dir_6ccb91f4c2064ceb88562b4f384b06f5.html), I did ...
by lwk1542
Tue Mar 16, 2021 10:04 pm America/New_York
Forum: All Questions/Comments
Question: the link of "HOWTO_Add_a_sensor.txt" file is error
Replies: 3

Re: the link of "HOWTO_Add_a_sensor.txt" file is error

OB.DAAC - SeanBailey wrote: > On which page did you find this link? > > By the way, that file is part of the OCSSW source code distributed as an > optional part of SeaDAS: > https://seadas.gsfc.nasa.gov/downloads/ > (although not as an individually downloadable file) > > Sean this page: https://ocea...
by lwk1542
Sun Mar 14, 2021 3:50 am America/New_York
Forum: All Questions/Comments
Question: the link of "HOWTO_Add_a_sensor.txt" file is error
Replies: 3

the link of "HOWTO_Add_a_sensor.txt" file is error

“an error has occurred. Please use the back button to return to the previous page”. I can not find this file in Github, also.
Can I get this file in other anywhere?
by lwk1542
Tue Jun 11, 2019 9:49 am America/New_York
Forum: All Questions/Comments
Question: python calls shell to l2gen error: l2gen not found. How to set env in python script?
Replies: 6

python calls shell to l2gen error: l2gen not found. How to set env in python script?

thank you very much! I have solved this problem. The detail was replied to gnwiii?
by lwk1542
Tue Jun 11, 2019 9:46 am America/New_York
Forum: All Questions/Comments
Question: python calls shell to l2gen error: l2gen not found. How to set env in python script?
Replies: 6

python calls shell to l2gen error: l2gen not found. How to set env in python script?

thanks, Prof.:     I have solved this problem. It is an environment variable setting problem in python script. Because the "source $OCSSWROOT/OCSSW_bash.env" is a temporary setting in my Linux OS (i do not know the reason). Therefore, I have to set this environment variable ...
by lwk1542
Sun Jun 09, 2019 9:11 pm America/New_York
Forum: All Questions/Comments
Question: python calls shell to l2gen error: l2gen not found. How to set env in python script?
Replies: 6

python calls shell to l2gen error: l2gen not found. How to set env in python script?

sorry for my unclear question!the detail is:   my os and software environment:  VMware workstation Pro 14, ubuntu16.04 X64, seadas7.5.3, anaconda/python3.7.3, pycharm education 2019   my scheme is that using “l2gen” to process MODIS L1B data (MOD021KM.**hdf) by python script...