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100 Years of Warming at the National Parks

  • Published: May 25th, 2016

By Climate Central

The National Parks regularly attract their fair share of visitors during the summer vacation season. This year will likely see even more visitors than usual as the National Park Service celebrates its centennial.

With such a wide variety of climates across the park system, the country’s 59 National Parks all have different challenges to manage in the changing climate. Some parks have experienced dramatic temperature changes, and these shifts can lead to water shortages (or too much water), ocean acidification, and species migration.

 

Warming trends at the national parks

Some statistics from the National Park Service:

  • Everglades National Park — Sea level rise has contributed to retreating mangroves, in some places by a half-mile, indicating more salt water intrusion into the glades.
  • Glacier National Park — The number of glaciers has been cut in half since 1968, and the largest glaciers are expected to be gone within the next 15 years.
  • Yellowstone National Park — On average, there are 30 fewer days with snow on the ground than in the 1960s, and the growing season is 30 days longer since that time, increasing wildfire risk.

 

More than 300 million people visited a National Park last year, exceeding that mark for the first time in the park service’s 100-year history. Visitation rates depend on multiple factors, but one of the primary drivers is weather and climate patterns — in particular, temperatures. A recent NPS study analyzed future visitation numbers based on historic visitation information, historic temperature trends, and temperature projections. The study found that, overall, park visitation is expected to increase, with the greatest growth in the high-latitude and high-elevation locations as higher temperatures will extend the prime visiting season.

Follow Climate Central this summer as we roll out our special series about climate change and the National Parks.

Posted in Impacts, Trends, Climate, Extremes, Heat, Causes, Landscapes, Weather, Extreme Weather, Flora & Fauna, Responses, United States, US National, New England, Mid-Atlantic, South, Pacific Northwest, West, Midwest, Southwest, Plains, Rockies

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