Spatial Coverage
- New York (State)2
- North Dakota.2
- North Sea2
- Northeastern States2
- Ohio2
- San Joaquin County2
- Southern States2
- Stanislaus County2
- Alaska1
- Alaska Peninsula Region1
- Arctic regions1
- Arkansas1
- Bellefontaine Region.1
- Blue Ridge Mountains1
- Canada1
- Chesapeake Bay (Md. and Va.)1
- Erie, Lake, Region1
- Europe.1
- Fennoskandia (Nord)1
- Glen Canyon (Utah and Ariz.)1
