Kristy Dahl

Senior climate scientist

Author image
Kristina Dahl is a climate scientist who designs, executes, and communicates scientific analyses that make climate change more tangible to the general public and policy makers. Her research focuses on the impacts of climate change--particularly sea level rise--on people and the places and institutions they care about. Dr. Dahl holds a Ph.D. in paleoclimate from the MIT/WHOI Joint Program in Cambridge and Woods Hole, Massachusetts.

Subscribe to Kristy's posts

Kristy's Latest Posts


New COVID-19 Testing Data Reveal 70% More Positive Results in Non-White US Counties

New data compiled and analyzed by UCS shows that in counties with relatively large non-White populations, 70 percent more people test positive for COVID-19 than in predominantly White counties. Read more >

Bookmark and Share

Midwest flood victims/PickStock

Continued Social Distancing Critical for US Regions Where Flooding and COVID-19 Are Set to Collide

New county-level projections for the spread of COVID-19 make clear that reducing direct social contact with one another gives us the best chance of minimizing the chances for cripplingly high coronavirus infection cases in the coming weeks. In regions that could experience significant flooding this spring, strong social distancing measures could reduce the total number of COVID-19 cases by more than two-thirds, from more than 600,000 cases to roughly 170,000.

That means that continuing to reduce social contact with one another will also be the best way to limit the confluence of high COVID-19 infection rates and flood events. Read more >

Pei and Shaman, 2020
Pei and Shaman, 2020
Bookmark and Share

Russ Munn/AgStock Images

New UCS Analysis: Coronavirus and Flooding Set to Collide in US

Last week, when the National Oceanic and Atmospheric Administration (NOAA) released its seasonal forecast for the spring flooding season, I was jolted into a reality that some people in the US are already experiencing: extreme weather stops for no virus.  Just days after NOAA’s forecast came out, the flooding arrived:  floodwaters  from heavy rains in central and southern Ohio required the evacuation of dozens of people, leading one local sheriff to state “God knows how we will figure it out with COVID-19.” Read more >

Bookmark and Share

Daniel Parks/Flickr

Lessons from California in 2019: The Challenges of Adapting to Climate Change

There’s a perception in the US that California is a place of extremes, that it’s unique among US states—an outlier. Yet many of the state’s societal and climatic extremes, from widening income inequality to the precipitation whiplash we’ve experienced in recent years, are reflections of issues facing the nation as a whole rather than exceptions to the rule. Read more >

Bookmark and Share

US Military on the Front Lines of Extreme Heat

If I were to tell you that there were nearly 2,800 cases of heat-related illness among active-duty members of the US military last year, you might not be surprised. After all, we have troops deployed throughout the Middle East, where some of the world’s hottest places are found. But what if I were to tell you that of those thousands of cases, only 67 occurred among troops deployed in Iraq and Afghanistan? It turns out that right here at home in the US, thousands of servicepeople suffer from heat-related illnesses like heat exhaustion and heat stroke every year, and the problem is set to grow much worse.

Read more >

Marine Corps Air Station Yuma
NBC News and InsideClimateNews
Armed Forces Health Surveillance Branch
Bookmark and Share