Overview
Simeonof is an Air Monitoring Station in Sand Point, Alaska, part of the IMPROVE network operated by the National Park Service. It monitors visibility and air quality in a remote region.
Simeonof is an Air Monitoring Station located in Sand Point, Alaska, United States. It is part of the Interagency Monitoring of Protected Visual Environments (IMPROVE) network, which focuses on visibility and aerosol monitoring in pristine areas. The station is operated by the National Park Service and is situated in the Aleutians East Borough, a remote coastal region. The IMPROVE network is a key component of the U.S. Environmental Protection Agency's (EPA) air quality monitoring framework, supporting the Regional Haze Rule and the Clean Air Act. Stations like Simeonof measure fine particulate matter (PM2.5) and other aerosol species to assess visibility impairment and long-range pollutant transport. The network uses standardized sampling protocols and contributes to the national Air Quality System (AQS) database. This station plays a critical role in monitoring background air quality in Alaska, a region influenced by both local emissions and transboundary pollution. Data from Simeonof helps inform regulatory decisions and scientific research on atmospheric composition, climate, and visibility in protected landscapes. Its remote location provides a baseline for understanding air quality changes in the Arctic and subarctic environments.
Environmental context
Simeonof operates in a remote Alaskan environment characterized by maritime climate, strong winds, and low anthropogenic emissions. The station's location in the Aleutian Islands makes it sensitive to long-range transport of pollutants from Asia and local volcanic activity. Monitoring at this site focuses on visibility and aerosol speciation, which are critical for assessing regional haze and climate impacts. The IMPROVE network's siting criteria ensure representativeness of regional background conditions, supporting the EPA's Regional Haze Rule and providing data for the Clean Air Act.
Frequently asked questions
Simeonof Air Monitoring Station is located in Sand Point, Alaska, United States, in the Aleutians East Borough. Its coordinates are approximately 55.3247° N, -160.5083° W.
Simeonof is part of the IMPROVE network and monitors visibility and fine particulate matter (PM2.5) and aerosol species to assess regional haze and air quality in remote areas.
Simeonof is operated by the National Park Service as part of the IMPROVE network, which is a collaborative program involving federal and state agencies.
Simeonof operates under the U.S. Clean Air Act and the Regional Haze Rule, with data reported to the EPA's Air Quality System (AQS). The IMPROVE network supports these regulations by providing visibility and aerosol data.
Remote Alaskan stations like Simeonof provide baseline air quality data, helping to detect long-range transport of pollutants from Asia and assess impacts on visibility, climate, and ecosystems in pristine areas.
Other Air Monitoring Station plants in United States · 6 nearby