I suggest (as Vince) to put the center of your custom projection in the middle of the study area at 168 W 59 N.

The following projections might give best results:

+proj=laea +lat_0=59 +lon_0=-168 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs
+proj=aea +lat_1=53 +lat_2=65 +lat_0=59 +lon_0=-168 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs
+proj=tmerc +lat_0=59 +lon_0=-168 +k=1 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs


They look pretty much the same (with the UTM zones as reference):



Kernel density estimation across multiple UTM zones
Never encountered this issue before. So I've just moved a site for a client to another server and for some reason all images give me a 404 when I change the default domain in the database (siteurl and home). CSS, JS and other files are linked correctly - it seems there's something affecting the uploads folder but I can't pinpoint what it is. Any ideas?
