Search found 11 matches

by leonidas
Mon Oct 19, 2020 10:22 am
Forum: VIIRS SDR
Topic: Lunar radiance removal
Replies: 6
Views: 13742

Re: Lunar radiance removal

riskov wrote:who was able to solve this problem?
Please take a look at:
https://ieeexplore.ieee.org/document/9151187
https://www.spiedigitallibrary.org/conf ... hort?SSO=1
by leonidas
Thu Mar 07, 2019 5:51 am
Forum: VIIRS SDR
Topic: Lunar radiance removal
Replies: 6
Views: 13742

Re: Lunar radiance removal

David,
Thank you for your clarification and your contribution! I have already contacted them. I haven't received a response. Thanks again!
by leonidas
Sat Feb 16, 2019 2:19 pm
Forum: VIIRS SDR
Topic: Lunar radiance removal
Replies: 6
Views: 13742

Re: Lunar radiance removal

I have found Cao's method [1] which is based on Spectral Lunar Ιrradiance model (MT2009) [2]. I tried that but I end up with an overcorrection... Did anyone try that formula? [1] Cao, C., Shao, X., & Uprety, S., Detecting Light Outages After Severe Storms Using the S-NPP/VIIRS Day/Night Band Rad...
by leonidas
Wed Oct 31, 2018 1:48 pm
Forum: VIIRS EDRs
Topic: How do I convert VIIRS hdf EDR files to geotiffs?
Replies: 9
Views: 18412

Re: How do I convert VIIRS hdf EDR files to geotiffs?

Dave, thank you! I checked satpy documentation but is empty... https://satpy.readthedocs.io/en/latest/readers.html#adding-a-reader-to-satpy Is that the section with satpy readers? https://github.com/pytroll/satpy/tree/master/satpy/readers I don't know how to start.There is so much technical informat...
by leonidas
Sat Oct 27, 2018 2:37 pm
Forum: VIIRS SDR
Topic: Obtain and convert daily VIIRS DNB hdf SDR files to geotiffs
Replies: 11
Views: 30877

Re: Obtain and convert daily VIIRS DNB hdf SDR files to geot

@PearceRJ, maybe something like that:

Code: Select all

polar2grid.sh  viirs_sdr gtiff -p dnb --dtype real4 -v -f inputfilename outputfilename
What's the problem with satpy?
I batch convert hdfs to geotiffs with satpy using this code:
https://gist.github.com/kokkytos/45ca11 ... 310ba29d60
by leonidas
Thu Oct 25, 2018 10:14 am
Forum: VIIRS EDRs
Topic: How do I convert VIIRS hdf EDR files to geotiffs?
Replies: 9
Views: 18412

How do I convert VIIRS hdf EDR files to geotiffs?

I have already reproject and convert my VIIRS (DNB SDR) hdf files in to geotiffs. I also need to convert/reproject the VIIRS Cloud Mask EDR (VICMO) and VIIRS Cloud Cover Layers EDR (VCCLO) files to geotiff format so as to be co-registered with DNB geotiffs and finally conduct with my analysis by R. ...
by leonidas
Mon Oct 15, 2018 2:44 pm
Forum: VIIRS SDR
Topic: Lunar radiance removal
Replies: 6
Views: 13742

Lunar radiance removal

How can I remove lunar radiance from VIIRS DNB files?
I have already converted hdf5/SDR files to geotiffs using satpy.
by leonidas
Mon Sep 24, 2018 1:05 pm
Forum: VIIRS SDR
Topic: Obtain and convert daily VIIRS DNB hdf SDR files to geotiffs
Replies: 11
Views: 30877

Re: Obtain and convert daily VIIRS DNB hdf SDR files to geot

The pytroll page had a link to invite yourself to the slack team. The link is: https://pytrollslackin.herokuapp.com/ All of the DNB enhancements available in P2G are available in satpy, usually under the same or similar name. You can use `scn.available_composite_names()` to get the full list of ava...
by leonidas
Wed Sep 12, 2018 12:08 pm
Forum: VIIRS SDR
Topic: Obtain and convert daily VIIRS DNB hdf SDR files to geotiffs
Replies: 11
Views: 30877

Re: Obtain and convert daily VIIRS DNB hdf SDR files to geot

Thank you! I projected my data. I defined ETRS89/LAEA as follows: area_id = 'etrs89-etrs-laea' description = 'ETRS89 / ETRS-LAEA' proj_id = 'etrs89_3035' x_size = 3867 y_size = 3918 area_extent = (2426378.0132, 1528101.2618, 6293974.6215, 5446513.5222) proj_dict = {'units': 'm', 'proj': 'laea', 'lat...
by leonidas
Fri Sep 07, 2018 12:38 pm
Forum: VIIRS SDR
Topic: Obtain and convert daily VIIRS DNB hdf SDR files to geotiffs
Replies: 11
Views: 30877

Re: Obtain and convert daily VIIRS DNB hdf SDR files to geot

Thank you! I created some 8-bit geotiffs using Polar2Grid . I also tried satpy to generate floating point geotiffs. But the generated tiffs have no CRS assigned. Code available at: https://gist.github.com/kokkytos/2bacd2b04181f5df3b170eb7fea6c023 Should I use pyresample to resample satpy swath data ...