ecor: Eddy Correlation Flux Measurement System

The eddy correlation (ECOR) flux measurement system provides half-hour measurements of the surface turbulent fluxes of momentum, sensible heat, latent heat, and carbon dioxide. The ECOR uses the eddy covariance technique, which involves correlation of the vertical wind component with the horizontal wind component, air temperature, water vapor density, and CO2 density. The system includes:

  • A fast-response, 3D wind sensor (sonic anemometer) to record the orthogonal wind components and the speed of sound (SOS), which is used to derive the air temperature;
  • An open-path infrared gas analyzer (IRGA) to obtain the water vapor density and CO2 density; and
  • An IRGA to obtain the methane density (at the NSA and OLI sites only).

ECOR systems are deployed where other methods for measuring surface fluxes, such as energy balance Bowen ratio systems (EBBR), are difficult to use.

Locations

  • Fixed
  • AMF1
  • AMF2
  • AMF3

Related Publications

2019

Anber U, S Giangrande, L Donner, and M Jensen. 2019. "Updraft Constraints on Entrainment: Insights from Amazonian Deep Convection." Journal of the Atmospheric Sciences, , 10.1175/JAS-D-18-0234.1. ONLINE.

Newsom RK, C Sivaraman, TR Shippert, and LD Riihimaki. 2019. Doppler Lidar Vertical Velocity Statistics Value-Added Product. Ed. by Robert Stafford, U.S. DOE ARM user facility. DOE/SC-ARM-TR-149.

Cook DR and RC Sullivan. 2019. Eddy Correlation Flux Measurement System (ECOR) Instrument Handbook. Ed. by Robert Stafford, U.S. Department of Energy. DOE/SC-ARM/TR-052.

Tang S, S Xie, M Zhang, Q Tang, Y Zhang, S Klein, D Cook, and R Sullivan. 2019. "Differences in Eddy‐Correlation and Energy‐Balance Surface Turbulent Heat Flux Measurements and Their Impacts on the Large‐Scale Forcing Fields at the ARM SGP Site." Journal of Geophysical Research: Atmospheres, 124(6), 10.1029/2018JD029689.
Research Highlight

Sullivan R, D Cook, V Ghate, V Kotamarthi, and Y Feng. 2019. "Improved Spatiotemporal Representativeness and Bias Reduction of Satellite-Based Evapotranspiration Retrievals via Use of In Situ Meteorology and Constrained Canopy Surface Resistance." Journal of Geophysical Research: Biogeosciences, , 10.1029/2018JG004744. ONLINE.
Research Highlight

2018

Lee J, Y Zhang, and S Klein. 2018. "The effect of land surface heterogeneity and background wind on shallow cumulus clouds and the transition to deeper convection." Journal of the Atmospheric Sciences, 76(2), 10.1175/JAS-D-18-0196.1.
Research Highlight

Williams I. 2018. "Evaluating soil moisture feedback on convective triggering: Roles of convective and land‐model parameterizations." Journal of Geophysical Research: Atmospheres, 124(1), 10.1029/2018JD029326.
Research Highlight

Emerson E, J Katich, J Schwarz, G McMeeking, and D Farmer. 2018. Direct Measurements of Dry and Wet Deposition of Black Carbon Over a Grassland.

Emerson E, J Katich, J Schwarz, G McMeeking, and D Farmer. 2018. "Direct Measurements of Dry and Wet Deposition of Black Carbon Over a Grassland." Journal of Geophysical Research: Atmospheres, 123(21), 10.1029/2018JD028954.

Varble A, S Nesbitt, P Salio, E Zipser, S van den Heever, G McFarquhar, P DeMott, S Kreidenweis, M Jensen, P Kollias, D Romps, K Rasmussen, R Houze, Jr, R Leung, D Gochis, E Avila, CR Williams, and P Borque. 2018. Cloud, Aerosol, and Complex Terrain Interactions (CACTI) Science Plan. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-18-027.


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