USA NPN National Phenology Network

Taking the Pulse of Our Planet

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Estimating uncertainty in AGDD gridded maps

The U.S. Climate Reference Network (CRN) stations, serve as the "unimpeachable record" of surface climate over the United States” (Diamond et al. 2013, Oswald and Dupigny-Giroux 2015). We compare our URMA/RTMA-based calculations of Accumulated Growing Degree Days to those made using measurments from CRN stations, accessed via the Applied Climate Information System, in the dashboards below.

2018 Comparisons

2017 Comparisons

2016 Comparisons