The following provides an overview of the contents of our Eddy Covariance Training Course. If you are interested in the course, please complete the Eddy Covariance Training Survey.

This class is designed to teach you how to use Campbell Scientific instrumentation for making eddy covariance measurements. Please note that Campbell Scientific is not a university and is not accredited to teach micrometeorology theory. We will cover only very basic micrometeorological assumptions and theory that are needed for proper use and installation of a Campbell Scientific eddy covariance system. If you are lacking a background in micrometeorology, we strongly recommend taking micrometeorology related classes (graduate level is preferable) from a university prior to registering for this class.

Class Outline:

  1. Theoretical considerations
    • Definition of flux and main assumptions of eddy covariance technique
    • Sensible heat ( ), latent heat ( ), and CO2 ( ) flux definitions
    • Definition of energy balance what are the main components, what is energy balance closure
  2. System description and components
    • Basic OPEC system sensors included
    • Extended OPEC System additional sensors needed to close energy balance
    • Additional fast response sensors
  3. Installation of OPEC System
    • Fetch and station position measurement field size requirements, position of EC station, sensors heights
    • Setting up a tripod
    • CSAT3 mounting: orientation, leveling, cable connections
    • LI7500 mounting: control box, sensor head, fuse check
    • Enclosure mounting
    • Energy Balance sensors: net radiometer, soil heat flux plates, soil temperature probe, soil moisture probes
    • Datalogger configuration and program downloading using a laptop
  4. Introduction to programming with CRBasic
    • CR1000 Hardware
    • CR1000 Specifications
    • CR1000 Memory
    • Short Cut Program Generator
    • LoggerNet
    • Introduction to Programming with CRBasic
    • CRBasic Editor
    • Template
    • Data Types and Formats
    • Instruction Parameters
    • Programming for Control
    • On-line help
    • Automated Data Collection
    • File Control, Operating Systems and Transformer
    • Typical CR1000 Program
  5. OPEC Programming
    • What is measured
    • What is processed
    • What is saved as data
    • Output format with units for both, time-series and mean values
    • User entered variables for OPEC if needed
    • Measurement section
    • Where to add auxiliary sensor measurements
    • Mean processing of auxiliary variables
    • Sensor Configuration
    • Loading a program to datalogger
    • Direct connect with Loggernet
    • Remote connect with PC/CF card
    • System Operation
    • Monitoring data Status Table
  6. SDM Connections
    • Timing diagram of the 3 lines.
    • CSAT3 has a two scan delay at any sample rate.
    • The LI-7500 has a 300 mSec delay, three scans at 10 Hz and six scans at 20 Hz
    • SDM lead length limitations data from CSAT3 and LI7500 combined
    • SDM-HUB reducing total SDM lead length
    • SDM Datalogger instructions to slow SDM baud rate
    • CRBasic SDM bit period search programs
  7. CSAT3 Three Dimensional Sonic Anemometer
    • Initial setup factory settings, SDM address
    • Operational principles digital signal processing, ultrasonic signal
    • CSAT3 trigger - CSAT3 SDM instruction and parameters in configuring the CSAT3
    • CSAT3 diagnostics byte
    • CSAT32 software
    • Criteria used for discarding measurement from on-line processing
    • Zero offset check
  8. CS7500 (LI7500)
    • Initial setup - Campbell Scientific, Inc. factory default settings, SDM address, bandwidth, delay (297.25 mSec or ~ 300 mSec).
    • Theory of operation measuring absorptance, relating absorptance to concentration, cross sensitivity, zero drift, basic equations
    • LI7500 SDM instruction and parameters in configuring the LI7500
    • LI7500 Software
    • LI7500 diagnostic byte
    • Criteria used for discarding measurement from online processing
    • Zero and span LI7500
  9. Site Maintenance
    • CSAT3
    • Check the status and position of the wicks
    • Check the surface conditions of the transducers, and clean them, if necessary
    • Check the junction and clean it, if using FW05
    • CS7500
    • Check the condition of the sapphire window, and clean, if necessary
    • Zero and Span
  10. Data Retrieval and Management
    • Direct connection and data retrieval via Loggernet
    • Data collection with a PC is only practical if the PC is located on-site with a direct connect interface (Free-wave radio, NL115 or NL100). The PC can not be used to "milk" data.
    • File management with Baler
    • Remote data retrieval via PC or Compact Flash Card
    • Discussion on Industrial Grade SLC CF cards vs. Commercial MLC CF cards
  11. Data Processing
    • File management with CardConvert format options, converting CSI formats
    • Brief discussion on CSI File Formats: TOB1, TOB3, TOACI1, TOA5
    • Online Processing
    • Off-line Processing with EdiRe
      • How to get EdiRe website information
      • Use of EDIRE's Interpreter to create custom Raw File Format List and Default Processing List
    • Basic Data Processing
      • Location Output Files
      • Extract
      • User Defined Fast
      • Raw Subset (filtering based on CSAT3 and LI7500 diagnostic flags)
        • 1 chn statistics (covariance)
        • 2 chn statistics (standard deviation and mean)
        • Wind speed and direction (CSAT3 and compass coordinates)
        • Webb correction
        • Plot Value
        • NaN and INF test