Contents

• Introduction
• Theory
  • Definition of the problem
  • Basic tools and definitions
    • Definition of surface fluxes
    • Reynolds-decomposition
  • Continuity- and budget equations
    • The continuity equation
    • The budget equation
    • Fluxes of species
    • Sensible heat flux
    • Ground shear stress
  • The homogeneous transition layer
  • Mean vertical velocity: The Webb-term
    • Origin of the ''eddy-correlation problem''
    • Mean vertical velocity in the transition layer
    • Fluctuations in dry air density
    • Pressure fluctuations
    • Practical estimation of convective fluxes in the transition layer
    • Fluxes of species, sensible heat and momentum
  • Common practice in eddy-correlation
  • The stationary homogeneous constant flux layer
  
  
• Practice
  • Recipe for datareduction
  • Flow distortion by small obstacles
  • Calibration of the raw signals
    • Velocity bias correction for sonic
    • Side-wind correction of sonic temperature
    • Calibration drift of optical hygrometers
  • Estimation of mean values and (co-)variances
  • Trend correction
  • Tilt-correction
    • Yaw-correction
    • Pitch-correction
    • Roll-correction
    • The planar fit-method for tilt-correction
  • Correction of sonic temperature for humidity
  • Oxygen correction for optical hygrometer
  • Correction for frequency response and path averaging
    • The Moore-Horst model
    • The Kristensen-Fitzjarrald model
  • Webb term (mean vertical velocity)
  • Estimation of tolerance levels
  
  
• Discussion on the definition of the sensible heat flux
  • Interpretation A
  • Interpretation B
  • Interpretation C
  
  
• Description of software library ECPACK
  • parcnst.inc/parcnst.inc
  • physcnst.inc/Rd
  • physcnst.inc/Rv
  • physcnst.inc/RGas
  • physcnst.inc/Epsilon
  • physcnst.inc/Pi
  • physcnst.inc/Kelvin
  • physcnst.inc/GammaR
  • physcnst.inc/DifCo2
  • physcnst.inc/DifH20
  • physcnst.inc/Karman
  • physcnst.inc/GG
  • physcnst.inc/MO2
  • physcnst.inc/MAir
  • physcnst.inc/MVapour
  • physcnst.inc/Mu
  • physcnst.inc/Kok
  • physcnst.inc/Kwk
  • physcnst.inc/Kola
  • physcnst.inc/Kwla
  • physcnst.inc/FracO2
  • physcnst.inc/Cp
  • physcnst.inc/Lv
  • physcnst.inc/MinT
  • physcnst.inc/MaxT
  • physcnst.inc/MinRhov
  • physcnst.inc/MaxRhov
  • physcnst.inc/MinRhoCO2
  • physcnst.inc/MaxRhoCO2
  • ec_gene.f/EC_G_Main
  • ec_gene.f/EC_G_Reset
  • ec_gene.f/EC_G_ShwFrq
  • ec_gene.f/EC_G_ShwInd
  • ec_gene.f/EC_G_ShwMinMax
  • ec_gene.f/EC_G_ShwHead
  • ec_math.f/EC_M_ABCForm
  • ec_math.f/EC_M_Averag
  • ec_math.f/EC_M_BaseF
  • ec_math.f/EC_M_Cardano
  • ec_math.f/EC_M_Det2
  • ec_math.f/EC_M_Determ
  • ec_math.f/EC_M_Detren
  • ec_math.f/EC_M_DSwap
  • ec_math.f/EC_M_Ell1Q
  • ec_math.f/EC_M_EllCoords
  • ec_math.f/EC_M_Ellint
  • ec_math.f/EC_M_InvM
  • ec_math.f/EC_M_InvM2
  • ec_math.f/EC_M_ISwap
  • ec_math.f/EC_M_ka
  • ec_math.f/EC_M_Map2Vec
  • ec_math.f/EC_M_MapMtx
  • ec_math.f/EC_M_MapVec
  • ec_math.f/EC_M_MinMax
  • ec_math.f/EC_M_MMul
  • ec_math.f/EC_M_MulVec
  • ec_math.f/EC_M_SortDecr
  • ec_math.f/EC_M_SortUse
  • ec_math.f/EC_M_specint
  • ec_math.f/EC_M_SQR
  • ec_math.f/EC_M_UnSort
  • ec_phys.f/EC_Ph_Flux
  • ec_phys.f/EC_Ph_Q
  • ec_phys.f/EC_Ph_QCO2
  • ec_phys.f/EC_Ph_RhoDry
  • ec_phys.f/EC_Ph_RhoWet
  • ec_phys.f/EC_Ph_Struct
  • ec_phys.f/EC_Ph_Obukhov
  • ec_corr.f/EC_C_D01
  • ec_corr.f/EC_C_D02
  • ec_corr.f/EC_C_F01
  • ec_corr.f/EC_C_F02
  • ec_corr.f/EC_C_Main
  • ec_corr.f/EC_C_Oxygen1
  • ec_corr.f/EC_C_Oxygen2
  • ec_corr.f/EC_C_Scal
  • ec_corr.f/EC_C_Schot1
  • ec_corr.f/EC_C_Schot2
  • ec_corr.f/EC_C_Schot3
  • ec_corr.f/EC_C_T01
  • ec_corr.f/EC_C_T02
  • ec_corr.f/EC_C_T03
  • ec_corr.f/EC_C_T04
  • ec_corr.f/EC_C_T05
  • ec_corr.f/EC_C_T06
  • ec_corr.f/EC_C_T07
  • ec_corr.f/EC_C_T08
  • ec_corr.f/EC_C_T09
  • ec_corr.f/EC_C_T10
  • ec_corr.f/EC_C_T11
  • ec_corr.f/EC_C_Webb
  
  
• Bibliography