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Horton Station (VPI120)

Site Photos

Site Information

Site ID VPI120
Site name Horton Station
County Giles
State abbreviation VA
Latitude; decimal degrees 37.329832
Longitude; decimal degrees -80.55751
Elevation; m 920
Operating agency EPA
Start date 05/01/1987
Primary Land Use Agric
Terrain surrounding site Mountaintop
NADP site code VA13
Distance to nearest NADP site; km .034
AMoN Site ID VA13
Does site conform to assumptions of MLM? No

Site History

OZONE : New certification range for site transfer standard 10-AUG-14
SOLAR_RADIATION : Sensor unwired. 29-APR-14
WETNESS : Sensor unwired. 29-APR-14
TEMP2 : Sensor unwired. 29-APR-14
RELATIVE_HUMIDITY : Sensor unwired. 29-APR-14
WIND_DIRECTION : Sensor unwired. 29-APR-14
OZONE : Knock-out bottle removed. 27-FEB-14
OZONE : Foam insulation added to sample line. 27-FEB-14
OZONE : ZSP order changed to SPZ. 27-FEB-14
OZONE : Replacement pressure transducer installed in site analyzer. 27-FEB-12
OZONE : 10 ft. exhaust tubing added to both analyzers. 27-FEB-12
OZONE : Ozone sample line filter removed from inside the shelter. 04-AUG-11
OZONE : 40CFR Part 58 ozone site installed using independent site transfer standard. 20-FEB-11
OZONE : Ozone tubing changed from 3/8 inch to 1/4 inch. 20-FEB-11
DATALOGGER : CR3000 datalogger installed. Wiring standardized. 19-FEB-09

Graphical Results

Composition of total nitrogen deposition by species
Trends in total nitrogen deposition
Trends in wet and dry nitrogen deposition
Composition of total sulfur deposition by species
Trends in total sulfur deposition
Trends in wet and dry sulfur deposition
Trend in ozone 8-hour average concentrations

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