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Nolan J. Doesken


State Climatologist Atmospheric Science

Contact Info

Phone: (970) 491-3690   Office:

Email:   Lab:


Fields of Expertise

1.) Climate Science
2.) Hydrology

Areas of Interest

 Colorado Climate historyDroughtFloodsSnowWeather and Climate Data


Nolan Doesken is the State Climatologist for Colorado at the Colorado Climate Center at Colorado State University. After obtaining degrees from the Univ. of Michigan and Univ. of Illinois in the 1970s, Nolan began his work as a climatologist at CSU in 1977 and was appointed State Climatologist in 2006. He is fascinated with climate monitoring and long-term climate trends, but pays particularly close attention to precipitation including floods and drought. After the Fort Collins flash flood of 1997, Nolan established a volunteer rain gauge network to track and map the local variations in northern Colorado precipitation. This project -- the Community Collaborative Rain, Hail and Snow network (CoCoRaHS) -- has nearly 20,000 volunteers in all 50 states and has now spread into Canada.