Heejun Chang is a professor of geography and associate dean for research and graduate programs at Portland State University.

He is a Fellow of the Institute for Sustainable Solutions and the past Chair of the Spatial and Analysis and Modeling Specialty Group of the American Association of Geographers.

Sponsored by Social Science Research Council/Abe foundation, his recent work also includes urban flood resilience in US, Japan, and South Korean cities.

[8] Chang has authored and served as a reviewer of more than 80 geographical, hydrologic, and environmental studies journals as well as numerous national and international grants.

He has co-authored more than 170 peer-reviewed journal articles and book chapters, and his work has been cited more than 9000 times by google scholar with an H index of 55.