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Data of Future Climate Projections to Forecast Changes in Migratory Monarch Butterflies in the Midwest, USA

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: September 05, 2025 | Last Modified: 20250422
This release covers the entire study region (Midwest) and includes data used for retrospective population modeling effort as well as climate projection data for each county on the summer breeding grounds for three future time periods (2025-2045, 2060-2080, 2080-2100) under three climate scenarios (RCP 2.6, 4.5, 8.5) of key thermal climate profiles (based on a range of typical thermal thresholds) relevant to butterfly (and other insect growth) including growing degree days and precipitation (Apr through Aug). Values were generated from an ensemble of GCMs.

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