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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
View Map View Map
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
Site History
RELATIVE_HUMIDITY : Sensor unwired. 07-FEB-16
WINDSPEED_SCALAR : Sensor unwired. 07-FEB-16
SIGMA_THETA : Sensor unwired. 07-FEB-16
WIND_DIRECTION : Sensor unwired. 07-FEB-16
WINDSPEED : Sensor unwired. 07-FEB-16
TEMP2 : Sensor unwired. 07-FEB-16
SHELTER_TEMPERATURE : A/C and Heat logger control installed. 07-FEB-16
TEMPERATURE : 9m temperature measurement with passive aspiration installed. 07-FEB-16
OZONE : New certification range for site transfer standard 10-AUG-14
TEMP2 : Sensor unwired. 29-APR-14
WIND_DIRECTION : Sensor unwired. 29-APR-14
WETNESS : Sensor unwired. 29-APR-14
SOLAR_RADIATION : Sensor unwired. 29-APR-14
RELATIVE_HUMIDITY : Sensor unwired. 29-APR-14
OZONE : ZSP order changed to SPZ. 27-FEB-14
OZONE : Knock-out bottle removed. 27-FEB-14
OZONE : Foam insulation added to sample line. 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 : Ozone tubing changed from 3/8 inch to 1/4 inch. 20-FEB-11
OZONE : 40CFR Part 58 ozone site installed using independent site transfer standard. 20-FEB-11
DATALOGGER : CR3000 datalogger installed. Wiring standardized. 19-FEB-09

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