View the North American Monsoon tree-ring project sites in a larger map.

In the table below the three letter site code, the full site name, latitude, longitude, elevation, and state are listed for each tree-ring collection site. Tree species sampled include Douglas-fir (PSME), ponderosa pine (PIPO), white fir (ABCO), and Jeffrey pine (PIJE). For each site, the collection date and collectors are listed. We gratefully acknowledge those who have volunteered thier time to assist with these field collections, particularly Mark Losleben, Kiyomi Morino, Clare Stielstra, Greg Pederson, Cody Routson, and Ekaterina Dolgova.