OSU Department of Forest Ecosystems and Society  


Metolius Intermediate Pine AmeriFlux Site (US-Me2)

Coordinates: 44.4523N, 121.5572W
Elevation: 1255 masl
Intake Heights: 1, 6, 10, 18, and 33 meters above ground
Gases Measured: CO2

The Metolius Intermediate Pine site was established in 2001. It is located in a mixed-age ponderosa pine stand initiated ca. 1915 (but with a mean age of 62 yrs), on Green Ridge in the eastern Cascade mountains of Oregon about 30 km northwest of the town of Sisters. The tower is 38 m tall and equipped with a full complement of eddy covariance instrumentation and a vertical profile of CO2 and meteorological data collection, powered by solar panels and a wind generator. The site is also equipped with a horizontal array of instrumentation collecting data on temperature, soil respiration, sapflow, and tree growth, and contributes data to the CO2 concentration project. The Metolius Intermediate Pine site has been selected for a trial installation of the COSMOS Neutron Soil Moisture Probe network, in collaboration with the University of Arizona.

To download archived meteorological data and field notes by year, click here.

To view site details and instrumentation specifications on the AmeriFlux website, click here (links to external page).

Realtime data

Cellular modems are used to provide remote connection to the site. Loggers are polled regularly and data files are updated once per hour. The provided data has been downsampled to minimize file size. Data has not been quality checked and periodic outages may occur.

MP towertop logger (opens new tab)
MP subcanopy logger (opens new tab)

Questions or comments? Please contact us!

Average mean annual temperatures (MAT) and precipitation (MAP)

Year Air Temperature [C] Precipitation [mm]
2009 6.9 534
2008 7.3 368
2007 7.6 443
2006 6.1 728
2005 6.1 557
2004 8.7 240
2003 8.4 290
2002 7.8 194


Terrestrial Ecosystems Research & Regional Analysis - Pacific Northwest
Oregon State University, Corvallis, OR 97331
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