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How Wet and Dry Spells Evolve across the Conterminous United States Based on 555 Years of Paleoclimate Data
2018
Journal of Climate
Evolving patterns of droughts and wet spells in the conterminous United States (CONUS) are examined over 555 years using a tree-ring-based paleoclimate reconstruction of the modified Palmer drought severity index (PDSI). A hidden Markov model is used as an unsupervised method of classifying climate states and quantifying the temporal evolution from one state to another. Modeling temporal variability in spatial patterns of drought and wet spells provides the ability to objectively assess and
doi:10.1175/jcli-d-18-0182.1
fatcat:zps4ehh5srdqxg3lwieucw6nm4