The USA-NPN is part of a new study published in Ecosphere that shows spring is advancing in 75% of 276 National Parks studied. This shift is "extreme" in half of the Parks. The study used the Spring Indices, an index of spring developed by the USA-NPN and its partners to compare the recent timing of spring onset (past 10-30 years) to a historical range of variability (1901-2012). Learn more about what this study means for National Parks.
Secretary Jewell announced the study on October 6th, 2016 at Shenandoah National Park.
An Arizona-focused article appeared in UANews on October 6, 2016, discussing what the study might mean for Arizona Parks.
The study is also highlighted in these popular media outlets: