Email: jclark@klimoinsights.com; Phone: +1 (919) 307-5617; LinkedIn; GitHub
I am a climatologist and data scientist working at the intersection of climate, health, and applied decision support. I am the Co-Founder and Chief Climatologist at Klimo Insights, and I consult with Duke University teams on climate-health data systems, metric standardization, and reproducible methods.
My doctoral research focused on extreme heat and human health, including the utility of heat stress indices in modeling health outcomes, microclimatic variability in wet bulb globe temperature (WBGT), and the development and validation of WBGT forecasts to support operational risk management.
Ph.D., University of North Carolina, Chapel Hill, NC
Geography, May 2023
Dissertation Title: Wet Bulb Globe Temperature: Identifying Relationships with Morbidity and Determining the Impact of
Microclimatic Variability on Estimates and Forecasts
M.A., University of North Carolina, Chapel Hill, NC
Geography, August 2019
Thesis Title: Measures of Heat Stress and Their Relationship with Mortality across North Carolina
B.A., University of North Carolina, Chapel Hill, NC
Geography, May 2017
Department of Geography
B.A., University of North Carolina, Chapel Hill, NC
Political Science, May 2017
Department of Political Science
Data Scientist and Climatologist (Consultant), Duke Global Health Institute (DGHI) at Duke University, 07/2025–Present
Climatologist (Consultant), Heat Policy Innovation Hub, Nicholas Institute for Energy, Environment & Sustainability at Duke University, 10/2025–Present
Co-Founder and Chief Climatologist, Klimo Insights LLC, 01/2022–Present
Senior Policy Associate, Climatologist, Heat Policy Innovation Hub, Nicholas Institute for Energy, Environment & Sustainability at Duke University, 02/2024–06/2025
Postdoctoral Associate, Nicholas Institute for Energy, Environment & Sustainability at Duke University, 02/2023–01/2024
Interim Regional Climatologist, Southeast Regional Climate Center (SERCC), University of North Carolina at Chapel Hill, 06/2022–08/2022
Research Assistant, Carolinas Integrated Sciences and Assessments (CISA), Southeast Regional Climate Center (SERCC), University of North Carolina at Chapel Hill, 07/2017–12/2022
Graduate Research Consultant, Environment and Ecology 201: Introduction to Environment and Society, 01/2019–05/2019
Graduate Research Consultant, American Studies 291: The Ethics of Climate Change, 01/2018–05/2018
GIS Team Lead, VSolvit LLC, 05/2016–08/2018
Intern, City of Raleigh Urban Design Center, 09/2016–12/2016
Weiss Urban Livability Doctoral Fellowship, University of North Carolina at Chapel Hill, 2017–2018. Link
REFEREED PUBLICATIONS
Noonan, D., Grenon, S., Swinkels, C., Clark, J., Zaniolo, M., Peralta, J., ... & Abram, M. D. (2025). Intersecting Risk: Heat and Substance Use in Rural Communities. Substance Use & Misuse, 1–4. Link
Grundstein, A. J., Yeargin, S. W., Cooper, E. R., Cargile, L., Clark, J., Lopez, R. M., ... & Stearns, R. L. (2025). Evaluating heat risk: Comparing on-site WBGT measurements versus smartphone application estimates. GeoHealth, 9(3), e2025GH001347. Link
Clark, J., Konrad, C. E., & Grundstein, A. (2024). The Development and Accuracy Assessment of Wet Bulb Globe Temperature Forecasts. Weather and Forecasting. Link
Clark, J., & Konrad, C. E. (2024). Observations and Estimates of Wet Bulb Globe Temperature in Varied Microclimates. Journal of Applied Meteorology and Climatology. Link
Clark, J., Weintraut, B., Nagamoto, E., Wilson, M., Snyder, J., & Ward, A. (under review). A retrospective analysis of heat-related economic losses in the United States (2001–2022). Manuscript submitted for publication.
Ward, A., Clark, J., Konrad, C., Woodul, R., McLeod, J., Moser, H. (2019). The impact of chronic high-heat on reduced gestational age in pregnant women in North Carolina, 2011-2015. International Journal of Biometeorology. Link
ACKNOWLEDGED CONTRIBUTIONS
Barnes, J., & Dow, K. (2022). Water and heat: intervening in adaptation hazard Bias. Frontiers in Climate, 4, 868017. Link
REPORTS AND POLICY PUBLICATIONS
Clark, J., Nagamoto, E., Hatcher, S. M., Williams, C. R., Locklear, A., Kothegal, N. P., & Ward, A. R. (2025). Modernizing Heat Alerts in North Carolina: A Health-Based Framework for Subregional Risk Communication (NI R 25-10). Nicholas Institute for Energy, Environment & Sustainability, Duke University. Link
Clark, J., Weintraut, B., Nagamoto, E., Wilson, M., Snyder, J., & Ward, A. (2025). Counting the Cost: Quantifying the Rising Impacts of Heat-Related Productivity Losses in the United States (2001–2023) (NI R 25-08). Nicholas Institute for Energy, Environment & Sustainability, Duke University. Link
Clark, J., Bouchard, F., & Ward, A. (2025). Insurance Innovation for Community Heat Resilience (NI R 25-07). Nicholas Institute for Energy, Environment & Sustainability, Duke University. Link
Global Heat Health Information Network, UNDRR, WMO. (2025). An Assessment of Heat Action Plans: Global standards, good practices and partnerships. (Author and Editor).
Global Heat Health Information Network, UNDRR, WMO. (2025). Stocktake Report: Heat action across United Nations Entities and International Organizations. (Author and Editor).
Clark, J. (2024). Development and deployment of a Lead Service Line Inventory Application for North Carolina Water Utilities. Nicholas Institute for Energy, Environment & Sustainability, Duke University. Link
Clark, J. (2023). A Game Plan for Heat Stress: Policy Recommendations for High School Sports. NI PB 23-01. Duke University. Link
Ward, A., & Clark, J. (2023). Defining Extreme Heat as a Hazard: A Review of Current State Hazard Mitigation Plans. Link
PUBLIC-FACING PUBLICATIONS
Clark, J., & Ward, A. (2024, May 10). Wet bulb globe temperature, not heat index, should guide worker safety. STAT News. Link
Clark, J. (2024, August 7). Rising temperatures and the Paris Olympics: A call to action for climate resilience. Climate Champions. Link
Clark, J., & Konrad, C. (2020). Accuracy Assessment of Experimental Wet Bulb Globe Temperature Forecasts Across North Carolina and the Continental United States. Link
Clark, J. (2019). CISA Engagement with the North Carolina High School Athletic Association: Heat Safety Working Group. Carolinas Climate Connection. Link
PRESENTATIONS
Evaluating and Predicting the Health Impacts of Extreme Heat in Present and Future Climate. Presented at the King’s College London – University of North Carolina at Chapel Hill Climate Workshop. February 20, 2018. London, United Kingdom.
The use of Different Measures of Heat Stress to Model Mortality in Urban vs. Rural Regions of North Carolina. Presented at the MPE 2013+ Workshop on Urban Environmental Sustainability in a Smart and Connected World. August 6, 2018. Athens, GA.
Comparing the Relationships Between Heat Stress Indices and Mortality in North Carolina. Presented at the 2018 Carolinas Climate Resilience Conference. October 30, 2018. Columbia, SC.
Identifying the Relationships Between Mortality and Wet-Bulb Globe Temperature across North Carolina. Presented at the North Carolina Public Health Association 2018 Fall Educational Conference. December 13, 2018. Charlotte, NC.
Identifying the Relationships between Mortality and Heat Stress Indices across North Carolina. Presented at the 99th American Meteorological Society Annual Meeting. January 8, 2019. Phoenix, AZ.
The Development and Validation of a Web-Based Tool to Forecast Wet-Bulb Globe Temperature. American Association of Geographers Annual Meeting. April 8, 2020. Denver, CO. (Conference canceled due to COVID-19).
The Development and Validation of a Web-Based Tool to Forecast Wet-Bulb Globe Temperature. Presented at the 2021 Carolinas Climate Resilience Conference. May 10, 2021. Durham, NC.
The Development and Validation of a Web-Based Tool to Forecast Wet-Bulb Globe Temperature. Presented at the Southern Appalachian Weather and Climate Workshop. March 26, 2022. Asheville, NC.
Defining Extreme Heat as a Hazard: A Review of Current State Hazard Mitigation Plans. Presented at the National Integrated Heat Health Information System (NIHHIS) National Conference. April 27, 2023.
Rising Temperatures, Rising Risks: Applications for Public Health Safety in Extreme Heat. Presented at the FEMA Extreme Heat Summit. May 10, 2023. Chicago, IL.
Pioneering Health-Informed Heat Action: North Carolina's Model for Climate Resilience. Presented at the 51st Conference on Broadcast Meteorology and Seventh Conference on Weather Warnings and Communication. June 14, 2024. Myrtle Beach, SC.
Innovative Insurance Solutions for Extreme Heat Risks. Presented at the Center for Innovation in Risk Analysis for Climate Adaptation and Decision Making (CIRCAD). September 2024. Atlanta, GA.
PRESENTATIONS (CO-AUTHOR CONTRIBUTIONS)
A Web-Based Tool to Forecast Wet-Bulb Globe Temperature (WBGT) for Outdoor Recreation. Presented at the North Carolina Recreation and Park Association Conference. December 4, 2019. Durham, NC. (Co-author, presented by F. Cochran)
Forecasting the Wet-Bulb Globe Temperature: A Web-Based Tool Designed for Populations Who Are Vulnerable to Heat-Related Illnesses. Presented at the American Meteorological Society 100th Annual Meeting. January 14, 2020. Boston, MA. (Co-author, presented by S. Rayne)
A Web-Based Tool to Forecast Wet Bulb Globe Temperature for Populations Who Engage in Exertional Outdoor Activities. Presented at the American Meteorological Society 99th Annual Meeting. January 7, 2019. Phoenix, AZ. (Co-author, presented by D. Bertrand)
INVITED KEYNOTES AND DISTINGUISHED PRESENTATIONS
Understanding Extreme Heat Vulnerability: Strategies for Emergency Preparedness and Hazard Mitigation. FEMA Region 5 Climate and Resilience Workgroup Lunch and Learn. September 6, 2023.
Managing Heat Risk in a Warming World: Heat Policy and Opportunities for Public-Private Collaboration. Presented at the North Carolina Biotechnology Center. November 11, 2024. Durham, NC.
Managing Heat Risk in a Warming World: Heat Policy and Opportunities for Public-Private Collaboration. Presented at the Duke EDGE Board Meeting. November 14, 2024. Duke University, Durham, NC.
NATIONAL AND INTERNATIONAL MEDIA
Nonprofit Quarterly. Scott, R. L. (2025, December 22). How Climate Instability and Extreme Heat Could Upend High School Sports. Link
The New York Times. (2024, August 13). Quote of the Day: Heat contributed to 47,000 deaths in Europe last year. Link
The New York Times. (2024, August 12). Heat Contributed to 47,000 Deaths in Europe Last Year, but Relief Programs Helped. Link
The Guardian. Noor, D. (2023, September 6). “A harrowing summer”: Extreme weather costs hit us as 60m under heat alerts. Link
STAT News. (2024, May 10). Heat indexes fall short: Why wet-bulb globe temperature could be key for worker safety. Link
NOAA Climate.gov. Lindsey, R. (2019, September 30). Extreme heat increases pregnant women's risk of pre-term delivery. Link
The New Republic. Aronoff, K. (2023, July 20). This heat is a national disaster. Why won't the Biden administration say so? Link
Canadian Centre for Occupational Health and Safety. (2024, August 12). Coping with Extreme Heat on the Job. OHS Canada. Link
The News & Observer. Swanson, S. (2024, June 26). Experts discuss essential hydration tips for athletes during the North Carolina heat wave.
REGIONAL MEDIA
North Carolina Health News. Blythe, A. (2023, August 26). As climate change makes excessive heat more routine, NC schools forced to weigh student, athlete safety. Link
North Carolina Health News. Talton, T. (2023, June 2). States greatly underestimate extreme heat hazards: Study. Link
Triangle News Hub. Editor In Chief. (2023, August 22). It's too hot. How can schools protect students, athletes? Link
Highlands News-Sun. Moody, K. (2023, August 22). Heat Surge Challenges Student Athletes. Link
Florida Phoenix. Henkel, C. (2023, July 30). In a summer marked by extreme heat, is it time for a national cooling standard? Link
Cornelius Today. (2023, July 28). Duke experts say policies must change to address heat. Link
HighSchoolOT.com. (2023, July 27). Duke expert echoes NCHSAA heat policies as fall sports begin. Link
HighSchoolOT.com. (2023, July 27). How to mitigate the risk of heat illness during hot weather. Link
HighSchoolOT.com. (2023, July 27). Steps to make games safer during extreme heat. Link
BROADCAST MEDIA
WRAL (NBC Affiliate). (2023, July 31). Duke Heat Policy Innovation Hub offers game plan to protect high school athletes. Link
CBS 17 (CBS Affiliate). (2024, August 1). Scorching temperatures prompt new monitoring by high school teams returning to practice for fall sports. Link
WPTF-AM Radio Interview (2023, July 28). Discussed heat-related challenges and safety. NewsRadio 680 WPTF. Link
WUNC Health. (2024, October 4). COMIC: How does extreme heat affect our bodies? Link
WUNC Environment. (2024, October 2). 'An invisible threat:' Behind the push for heat safety rules in North Carolina. Link
Programming and Software:
Statistical and Data Analysis:
Climate Modeling and Risk Assessment:
Remote Sensing and GIS:
Systems and Server Management:
American Meteorological Society (AMS)
Association of American Geographers (AAG)