Stephen Yeager (Nov 29 2023 at 17:25): Stephen Yeager (Nov 29 2023 at 17:25):I'm using xesmf v0.8.2 and get an error when trying to use Regridder(...method='conservative'). The grid_in has 2D longitude and latitude coordinates. The lat and lon bounds should be computed in xesmf using cf.get_bounds(), but this call is returning "No results found for 'longitude'" even though longitude is a coordinate. Screenshot-2023-11-29-at-10.18.36-AM.png
Notification Bot (Nov 29 2023 at 20:21):Stephen Yeager has marked this topic as resolved.
Katie Dagon (Dec 06 2023 at 17:50):Hi @Stephen Yeager I was thinking about this question the other day and wondering how you resolved it? I know in the past I've had to be careful about how to define bounds for conservative regridding with xesmf.
Stephen Yeager (Dec 06 2023 at 18:03):I realized I had asked a similar question before that Deepak answered. The cf.get_bounds() returns bounds that already exist, while cf.add_bounds attempts to guess them. I continue to have a lot of difficulty using xesmf for conservative regridding when lon/lat are 2D arrays because Regridder does not know how to generate the lon_bnds/lat_bnds that should have dimension (ny+1,nx+1). Seems like that has to be done by hand before calling xesmf.
Katie Dagon (Dec 06 2023 at 19:01):Yeah, that's sounding familiar with what I've encountered as well (creating the bounds beforehand). Good to know about 2D arrays. Thanks for clarifying!
Last updated: May 16 2025 at 17:14 UTC