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GCE Eddy Covariance Flux Tower


The GCE eddy covariance flux tower is a level 3 weather station located in a Spartina-dominated marsh off the Duplin River. This tower is used to study fluxes of heat, water and carbon between the marsh ecosystem and atmosphere. A sonic anemometer and a closed-path gas analyzer (Li-7200) measure the 3D wind vector, air temperature, and concentrations of CO2 and H2O at 10 Hz. Soil heat fluxes are measured with heat flux plates, an averaging thermocouple and a soil water content reflectometer. Other instrumentation measures humidity, vertical temperature variations, atmospheric pressure, rainfall, and marsh water level. Up- and downward looking radiation sensors measure shortwave (solar), long wave and photosynthetically active radiation (PAR).

A StarDot Netcam SC digital camera installed on the tower takes pictures every 30 min from 6AM to 9PM to get high frequency phenology data, which are contributed to the PHENOCAM project web site hourly.

Meteorological parameters Flux Tower
(photo courtesy of Wade Sheldon)
  • wind speed (at 3m)
  • wind direction (at 3m)
  • air temperature (3 elevations)
  • sediment temperature
  • sediment heat flux
  • relative humidity
  • atmospheric (barometric) pressure
  • photosynthetically available radiation (PAR)
  • short wave radiation
  • long-wave radiation
  • precipitation
  • carbon dioxide concentration and flux
  • water vapor concentration and flux
  • water level
  • water temperature
Station Status
  • station is operational
  • climatological data have been collected since July 2013
  • near-real-time data and plots are available on the GCE Data Portal web site
Geographic Coordinates
  • latitude: 31° 26' 38.2" N
  • longitude: 081° 17' 1.0" W

This material is based upon work supported by the National Science Foundation under grants OCE-9982133, OCE-0620959, OCE-1237140 and OCE-1832178. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.