Skip to content

Fix bad xgrid along zero longitude when LND grid not same as ATM #379

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
mlee03 merged 1 commit into from
Jan 15, 2026
Merged

Fix bad xgrid along zero longitude when LND grid not same as ATM #379

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
10 changes: 9 additions & 1 deletion src/make-coupler-mosaic/make_coupler_mosaic.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1662,7 +1662,15 @@ int main (int argc, char *argv[])
if(lnd_frac > MIN_AREA_FRAC) { /* over land */
/* find the overlap of atmxlnd and ocean cell */
for(l=0; l<count; l++) {
if( clip_method == GREAT_CIRCLE_CLIP )
/*Apply a longitude fix to ocean cell xo based on the center of the atmxlnd cell
Otherwise, when lnd and atm grids are not the same some exchange grids may be missed, particularly around the Prime Meridian lon=0
*/
if(!lnd_same_as_atm){
no_in = fix_lon (xo, yo, 4, atmxlnd_x[l][0]); //Shifts xo so the center to be within atmxlnd_x[l][0]-pi to atmxlnd_x[l][0]+pi,
xo_min = minval_double (no_in, xo);
xo_max = maxval_double (no_in, xo);
}
if( clip_method == GREAT_CIRCLE_CLIP )
n_out = clip_2dx2d_great_circle(atmxlnd_x[l], atmxlnd_y[l], atmxlnd_z[l], num_v[l], xo, yo, zo, 4,
x_out, y_out, z_out);
else {
Expand Down