1. University of California, Berkeley Berkeley CA USA
2. U.S. Geological Survey, Moffett Field Menlo Park CA USA
3. University of California, Davis Davis CA USA
4. University of California, Los Angeles Los Angeles CA USA
5. Michigan State University East Lansing MI USA
6. University of Cambridge Cambridge UK
7. University of Illinois at Urbana‐Champaign Champaign IL USA
8. The Ohio State University Columbus OH USA