• Nine men pose with gear at the Alaska-British Columbia border in the snow

    Klondike Gold Rush

    National Historical Park Alaska

Air Quality

Rain Collection Instrument

The uses mutli-pronged approach to sample the atmosphere including wet deposition sampling, collection of lichens and biomonitoring plots.

NPS

Southeast Alaska is known for its fresh air. The Southeast Alaska Inventory and Monitoring Network (SEAN) monitors airborne contaminants throughout national parks in Southeast Alaska including; Klondike Gold Rush National Historical Park (NHP), Sitka NHP, and Glacier Bay National Park and Preserve.

The Airborne Contaminants monitoring program is designed to monitor contaminants every 10 years using a variety of methods including measuring amounts of nitrogen, sulfur and metals such as mercury. This is being done through the collection of lichens, which absorb elements in the atmosphere, and rain water collection. Additionally, the NPS is cooperating with the Tongass National Forest to continue data collection on 120 permanent biomonitoring plots throughout the region.

For more information go the SEAN Airborne Contaminants web page.

or

Download the one page PDF Resource Brief on this study.

Did You Know?

Chilkoot Trail Unit sign showing the National Park Service arrowhead logo and an outline of people with loads climbing up a snowy pass

The Chilkoot Trail, in Klondike Gold Rush National Historical Park, is 33 miles long and is shared with our neighbor, Parks Canada. Hikers cross the border at the top of the pass and enter British Columbia. The trail is considered to be the world's longest outdoor museum. More...