We have started processing downloaded MSG data from Eumetsat's Data Store and understanding trollflow2 to obtain images.
Unfortunately, our final products have to be reprojected to a reference system that can be understood by Geoserver. Therefore, we wrote a new area definition in areas.yaml:
description: trial area
lower_left_xy: [-44.0, 26.0]
upper_right_xy: [35.0, 65.0]
This area is used for composites with the HRV channel, like ir_sandwich. The outputs have the known circular artifacts, like the attached image.
We have already tried with radius_of_influence up to 80000 (defined in trollflow2.yaml), and the problem isn't there when repeating the procedure from a standalone python script, like this one:
global_scene = Scene(reader="seviri_l1b_native", filenames=[filenames])
lscene = global_scene.resample("test7", radius_of_influence=80000)
The HRV channel alone is also rendered correctly by trollflow2. I suspect he problem arises when HRV is mixed with the rest of standard resolution channels.
I was wondering if someone has found the same issue before and could share a solution, in which case I'd be really grateful.
Extra question: is there a way to pydecorate or pycoast an image from trollflow2? I don't mind investigating, but I'm at a loss here and don't know really where to start from.
Thanks a lot!
José Daniel Gómez de Segura
Meteorology and Climate Area