Search found 258 matches

by fsteinmetz
Tue Jul 19, 2022 7:32 am
Forum: Support
Topic: Feature: include OLCI b09 in output
Replies: 1
Views: 276

Re: Feature: include OLCI b09 in output

Dear Tiago,

You can include the output at band 673, by passing the following argument :
run_atm_corr(..., bands_rw=[400,412,443,490,510,560,620,665,674,681,709,754,779,865,1020])

By default, this band is indeed not included (see params.py:323)

Cheers,
François
by fsteinmetz
Tue Jul 19, 2022 7:27 am
Forum: Support
Topic: Polymer flags
Replies: 1
Views: 221

Re: Polymer flags

Dear Minsun Lee, Thanks for your message ! Yes it seems you are using the flags correctly. To answer your questions : - 256 is not used, it is a placeholder - no problem about that. - 1 is missing because there is no land mask in Sentinel 2 level1 products. To apply a land mask, you can use GSW by p...
by fsteinmetz
Tue Jul 19, 2022 7:20 am
Forum: Support
Topic: custom ancillary folder doesn't work for NASA satellites
Replies: 2
Views: 272

Re: custom ancillary folder doesn't work for NASA satellites

Dear Guillaume,

To provide a custom directory to NASA ancillary data, you should pass the argument "directory" to the class Ancillary_NASA (Ancillary_NASA(directory=<custom dir>)). Do you confirm this is what you did ? If so, what is the error ?
Cheers,
François
by fsteinmetz
Tue Jun 14, 2022 12:27 pm
Forum: Support
Topic: Output filename assertion error
Replies: 2
Views: 330

Re: Output filename assertion error

Hi,

No, I think the problem is on the input file : you should provide the path the the granule (ex: S2B_MSIL1C_20200719T100029_N0209_R122_T32TQR_20200719T124000.SAFE/GRANULE/L1C_T32TQR_A017594_20200719T100614)

Cheers,
François
by fsteinmetz
Tue Jun 14, 2022 12:25 pm
Forum: Support
Topic: Polymer cloud cover and land flag
Replies: 1
Views: 311

Re: Polymer cloud cover and land flag

Hi Tong, The cloud mask in Polymer is determined by a threshold on the reflectance in the NIR band, but by default it is quite relaxed to avoid masking out the sun glint (20%). This way, the semi-transparent clouds are processed by Polymer, and water underneath still being visible. ACOLITE has a str...
by fsteinmetz
Tue May 24, 2022 2:04 pm
Forum: Support
Topic: Strips in Polymer VIIRS Rw image
Replies: 4
Views: 466

Re: Strips in Polymer VIIRS Rw image

I couldn't say, sorry. It seems that the reprojection software handles the VIIRS standard L2 and VIIRS Polymer L2 differently, but this question goes back to the reprojection software.
Cheers,
François
by fsteinmetz
Mon May 23, 2022 9:56 am
Forum: Support
Topic: Strips in Polymer VIIRS Rw image
Replies: 4
Views: 466

Re: Strips in Polymer VIIRS Rw image

Dear Mengmeng, Indeed, this is a particularity of the VIIRS sensor. There is no data at level1 for these pixels. This is due to the fact that pixels at the edge of the swath cover a larger area at ground, so some lines of pixels are spared. If you reproject to a similar spatial resolution, there are...
by fsteinmetz
Fri May 20, 2022 1:17 pm
Forum: Support
Topic: Error L8-OLI scene
Replies: 1
Views: 285

Re: Error L8-OLI scene

Dear Muhammad,

I could process a part of this file with Polymer v4.14. Did you use particular processing options ?
Thanks,
Cheers,
François
by fsteinmetz
Fri May 20, 2022 11:07 am
Forum: Support
Topic: Error converting VIIRS L1A to L1C data
Replies: 2
Views: 343

Re: Error converting VIIRS L1A to L1C data

Dear Mengmeng,

It seems that you are missing the "viirs" part of the SeaDAS install. You can refer to https://seadas.gsfc.nasa.gov/downloads/ to get the instructions for installing it.
Cheers,
François
by fsteinmetz
Fri May 06, 2022 9:17 am
Forum: Support
Topic: Failed to download external oceandata files
Replies: 1
Views: 328

Re: Failed to download external oceandata files

Hello, The auxiliary data are fixed files downloaded by the command "make auxdata_all". The ancillary files are different, and are downloaded on the fly to get information about wind speed, surface pressure, etc, for the file you want to process. Installing wget through anaconda should work - could ...