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EDDY COVARIANCE SYSTEM

TABLE OF CONTENTS

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1. SYSTEM OVERVIEW

1.1 Review of Theory ....................................................................................................................1-1

1.2 System Description .................................................................................................................1-1

1.3 System Limitations ..................................................................................................................1-2

2. STATION INSTALLATION

2.1 Sensor Height .........................................................................................................................2-2

2.2 Mounting..................................................................................................................................2-2

2.3 KH20 Calibrations ...................................................................................................................2-3

2.4 Finding Water Vapor Density ..................................................................................................2-3

2.5 Soil Thermocouples, Heat Flux Plates, and CS615................................................................2-4

2.6 Wiring......................................................................................................................................2-5

2.7 Power ......................................................................................................................................2-6

2.8 Routine Maintenance ..............................................................................................................2-7

3. SAMPLE 21X PROGRAM....................................................................................................3-1

4. CALCULATING FLUXES USING SPLIT

4.1 Flux Calculations.....................................................................................................................4-1

4.2 Example Split Programs..........................................................................................................4-1

5. TROUBLESHOOTING

5.1 Symptoms, Problems, and Solutions ......................................................................................5-1

APPENDIXES

A. USING A KRYPTON HYGROMETER TO MAKE WATER VAPOR

MEASUREMENTS

A.1 Water Vapor Fluxes ............................................................................................................... A-1

A.2 Variance of Water Vapor Density........................................................................................... A-2

B. REMOVING THE TRANSDUCERS ON THE CA27.................................................... B-1

C. ADJUSTING THE CA27 ZERO OFFSET.......................................................................C-1

D. LIST OF VARIABLES AND CONSTANTS ....................................................................D-1

E. REFERENCES........................................................................................................................ E-1

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