Search found 18 matches

by liugers11
Sun Sep 19, 2021 10:56 pm America/New_York
Forum: All Questions/Comments
Question: The MODIS subset problem of l2gen
Replies: 2

Re: The MODIS subset problem of l2gen

Thank you very much. It really helps.
by liugers11
Sun Sep 05, 2021 2:01 am America/New_York
Forum: All Questions/Comments
Question: The MODIS subset problem of l2gen
Replies: 2

The MODIS subset problem of l2gen

Hi, We download the MODIS L0 files from ocean color and the L0 files were processed to L1B by SeaDAS 8.1.0. Then the L1B files were processed by l2gen to get the Rayleigh corrected reflectance products. However, we find that the subset function of l2gen (like north=31.8 sourth=30.5 west=119.6 east=1...
by liugers11
Sun Jul 04, 2021 4:49 am America/New_York
Forum: All Questions/Comments
Question: How to get the Rayleigh diffuse transmittance Only
Replies: 2

Re: How to get the Rayleigh diffuse transmittance Only

Thank you very much. It really helps.
by liugers11
Tue Jun 29, 2021 6:14 pm America/New_York
Forum: All Questions/Comments
Question: How to get the Rayleigh diffuse transmittance Only
Replies: 2

How to get the Rayleigh diffuse transmittance Only

Hi, In SeaDAS l2gen, The output products t_sen and t_sol are the Rayleigh-Aerosol diffuse transmittance. We want to obtain the Rayleigh diffuse transmittance only. The t_sen and t_sol are the Rayleigh diffuse transmittance only when we set the "aer_opt=-99" (No aerosol subtraction) ? If no...
by liugers11
Thu May 14, 2020 9:12 pm America/New_York
Forum: All Questions/Comments
Question: SLSTR data
Replies: 2

SLSTR data

Thank you for replying.
by liugers11
Thu May 14, 2020 12:26 pm America/New_York
Forum: All Questions/Comments
Question: SLSTR data
Replies: 2

SLSTR data

Hi,
      I want to get the rayleigh corrected reflectance product of SLSTR.  Can I ask whether SeaDAS has the plan to add the module of SLSTR?

Best Wishes
Ge
by liugers11
Sun Oct 20, 2019 7:18 am America/New_York
Forum: All Questions/Comments
Question: About the calculation of relative azimuth angle
Replies: 1

About the calculation of relative azimuth angle

Hi,       We want to do the atmospheric correction of OLCI images using the aerosol tables in SeaDAS. One step, we need to calculate the relative azimuth angle of each pixel and then obtain the aerosol properties of the aerosol tables in the matching relative azimuth angle. How can I ...
by liugers11
Wed Feb 13, 2019 7:19 am America/New_York
Forum: All Questions/Comments
Question: The equation of SS aerosol reflectance to MS aerosol reflectance
Replies: 2

The equation of SS aerosol reflectance to MS aerosol reflectance

Hi, Sean
     Thank you for your replying.  It really helps.

Best Wishes
Ge
by liugers11
Sat Feb 02, 2019 11:49 pm America/New_York
Forum: All Questions/Comments
Question: The equation of SS aerosol reflectance to MS aerosol reflectance
Replies: 2

The equation of SS aerosol reflectance to MS aerosol reflectance

Hi?We want to convert the OLCI SS aerosol reflectance to MS aerosol reflectance using the equation in aerosol.c as follows.lnrhoas = log(rhoas[iw]*aeroob(sensorID,iw,cf,wv)) rhoa[iw] = exp(a + b*lnrhoas + c*lnrhoas*lnrhoas);I have a few questions.(1)  for the OLCI images, can I set aeroob(senso...
by liugers11
Sun Oct 29, 2017 2:47 am America/New_York
Forum: All Questions/Comments
Question: My IP be blocked
Replies: 3

My IP be blocked

Hi, gnwiii

      I think it is blocked by the website beacuse I cannot download the data using windows 10.  If I use the VPN, I can download the data and process the images.


Thank you very much.

Best Wishes

Ge