Campbell Open Path Eddy Covariance System Betreibershandbuch

Open-Path Eddy-Covariance System Operator’s ManualIRGASON, KH20, and FW05Revision: 4/13 Copyright © 2004-2013Campbell Scien

OPEC Open-Path Eddy-Covariance System 1.3 Extended OPEC Energy balance sensors can be added to a basic OPEC system to also measure the net radiation,

OPEC Open-Path Eddy-Covariance System Keep a log book for each station. Record the date and personnel name for all site visits, as well as all mainte

OPEC Open-Path Eddy-Covariance System 2.1 Fetch and local surface layer. The local surface layer grows at a rate of approximately 1 vertical meter p

OPEC Open-Path Eddy-Covariance System TABLE 2-1. Nominal Sensor Power Requirements Sensor Power (mW) IRGASON 400 mA @ 12.5 Vdc IRGASON (gas head po

OPEC Open-Path Eddy-Covariance System as a line item on the order, contact Campbell Scientific to purchase the appropriate datalogger program for your

OPEC Open-Path Eddy-Covariance System To enter the “sonic_azimuth” using the datalogger keyboard, press the <Esc> key until the Campbell Scienti

OPEC Open-Path Eddy-Covariance System Wind VaneWind VectorYXNorth FIGURE 3-2. Compass coordinate system, compass wind direction is 140 degrees 3.1.2

OPEC Open-Path Eddy-Covariance System If you loan an IRGASON to a colleague, verify that the address is 1 before deploying the system into the field.

OPEC Open-Path Eddy-Covariance System key, select “CRD:” and again press the <Enter> key. The datalogger will now display a list of program fil

OPEC Open-Path Eddy-Covariance System CompileResults: Reports compile errors. VarOutOfBound: An element of an array was referenced that does not exi

OPEC Open-Path Eddy-Covariance System seconds and nanoseconds since 0000 hrs, 1 Jan 1990. In the TOA5 format, the time stamp is a quoted string, simil

OPEC Open-Path Eddy-Covariance System 4.1.1 Direct Connection Data Retrieval via LoggerNet LoggerNet can be used to automatically collect and organiz

OPEC Open-Path Eddy-Covariance System FIGURE 4-2. LoggerNet station setup for the “ts_data” table In the “Schedule” tab, configure the station’s dat

OPEC Open-Path Eddy-Covariance System To enable LoggerNet’s data collection, click on the Status Monitor button in the Toolbar. Select the station an

OPEC Open-Path Eddy-Covariance System FIGURE 4-5. Baler station setup for the “flux” table FIGURE 4-6. Baler station setup for the “ts_data” table

OPEC Open-Path Eddy-Covariance System 4.1.3 Remote Data Retrieval via a PC/CF Card To transfer data manually from the PC/CF card to the PC, remove th

OPEC Open-Path Eddy-Covariance System 4.1.4 File Management with CardConvert CardConvert is a utility that is shipped with LoggerNet and is used to c

OPEC Open-Path Eddy-Covariance System Start the CardConvert utility. When CardConvert is started, a summary of its current settings is displayed in t

OPEC Open-Path Eddy-Covariance System • Set the file size (Bale size) in the “Time Settings” screen. For the time series files, use a one hour file

OPEC Open-Path Eddy-Covariance System FIGURE 4-10. List of files created by CardConvert 4.1.4.1 Collecting Data with One Card If a single card is u

Warranty “PRODUCTS MANUFACTURED BY CAMPBELL SCIENTIFIC, INC. are warranted by Campbell Scientific, Inc. (“Campbell”) to be free from defects in materi

OPEC Open-Path Eddy-Covariance System FIGURE 4-11. List of files created by CardConvert with duplicates FIGURE 4-12. List of files where the dupli

OPEC Open-Path Eddy-Covariance System Using two or more cards is a fast and efficient method of collecting data. Only new data is collected; however

OPEC Open-Path Eddy-Covariance System 4.2 Data Processing There are several ways to process the raw time series data collected by the system. Some o

OPEC Open-Path Eddy-Covariance System • Spatial separation correction or maximum covariance. • Coordinate rotation (mean vertical wind = 0 or planar

OPEC Open-Path Eddy-Covariance System FIGURE 4-15. Interpreter settings to read a Campbell Scientific TOB1 data file FIGURE 4-16. Folder that cont

OPEC Open-Path Eddy-Covariance System FIGURE 4-17. Completed Interpreter screen FIGURE 4-18. Estimated sample frequency and correct sample frequ

OPEC Open-Path Eddy-Covariance System The Processing Steps list has the default instructions needed to extract the data from the TOB1 file (FIGURE 4-1

OPEC Open-Path Eddy-Covariance System FIGURE 4-20. Output file location as part of the processing list FIGURE 4-21. Output file location as part o

OPEC Open-Path Eddy-Covariance System FIGURE 4-22. Processing Uz and CO2 with 1 Chn Statistics instruction FIGURE 4-23. Computing CO2 flux with 2

OPEC Open-Path Eddy-Covariance System 5. Basic Eddy-Covariance Theory Appendix B lists several references on eddy-covariance flux measurements. The f

Assistance Products may not be returned without prior authorization. The following contact information is for US and international customers residing

OPEC Open-Path Eddy-Covariance System The surface layer (FIGURE 5-1) is comprised of approximately the lower 10% of the atmospheric boundary layer (AB

Appendix A. CSAT3 Orientation A.1 Determining True North and Sensor Orientation The orientation of the CSAT3 negative x-axis is found by reading a

Appendix A. CSAT3 Orientation Declination angles are always subtracted from the compass reading to find True North. A declination angle East of True

Appendix A. CSAT3 Orientation A.2 Online Magnetic Declination Calculator The magnetic declination calculator web calculator published by NOAA’s Geop

Appendix A. CSAT3 Orientation A-4

Appendix B. References Abuinet, M., Vesala, T., and Papale, D. (eds), 2012: Eddy Covariance, A Practical Guide to Measurement and Data Analysis, Sp

Appendix B. References B-2 Schotanus, P., F. T. M. Nieuwstadt, and H. A. R. de Bruin, 1983: Temperature measurement with a sonic anemometer and its

Appendix C. OPEC200 Open Path Eddy Covariance System Quickstart Guide 1. Setup tripod and mount enclosures. Datalogger Enclosure EC100 Electronics

Appendix C. OPEC200 Open Path Eddy Covariance System Quickstart Guide 2. Ground tripod and enclosures. Ground Lug Grounding Rod C-2

Appendix C. OPEC200 Open Path Eddy Covariance System Quickstart Guide 3. Setup tripod or mast with CM20X Crossarm. Crossarm-to-Pole Bracket CM20X C

Table of Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links to spec

Appendix C. OPEC200 Open Path Eddy Covariance System Quickstart Guide 4. Mount the IRGASON into the prevailing wind. IRGASON Mounting Bracket IRGAS

Appendix C. OPEC200 Open Path Eddy Covariance System Quickstart Guide 5. Mount the radiation shield and IRGASON Temperature Probe. Radiation Shield

Appendix C. OPEC200 Open Path Eddy Covariance System Quickstart Guide 6. Connect gas analyzer, sonic anemometer, and temperature probe cables to EC1

Appendix C. OPEC200 Open Path Eddy Covariance System Quickstart Guide 7. Connect system wiring and insert compact flash (CF) card.

Appendix C. OPEC200 Open Path Eddy Covariance System Quickstart Guide 8. Turn on the power supply and use the datalogger keyboard display to set set

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Table of Contents Appendices A. CSAT3 Orientation ...A-1 A.1 Determining True North and Sensor Orient

Table of Contents Tables 2-1. Nominal Sensor Power Requirements...5 2-2. Nominal Datalogger Power Req

Table of Contents iv

OPEC Open-Path Eddy-Covariance System This document will serve as a guide to properly install and operate a Campbell Scientific Open-Path Eddy-Covari