About the Authors

Jing Du

dujing@tamu.edu

Affiliation Department of Construction Science, Texas A&M University, Francis Hall 334, TAMU, College Station, TX 77840, United States of America

Arika Ligmann-Zielinska

Affiliation Department of Geography, Michigan State University, 673 Auditorium Rd, Room 121, East Lansing, MI 48824, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JD ALZ. Performed the experiments: JD. Analyzed the data: JD ALZ. Contributed reagents/materials/analysis tools: JD. Wrote the paper: JD ALZ. Coding: JD.