メタン・炭酸ガス・水分分析計 CH4/CO2/H2O Analyzer
EddyPrpによっておこなわれる計算内容

EddyPro 動画はこちら

 

EddyPro Express

Applied with default settings:

EddyPro Advanced

Select and configure the followings:

Axis rotation for tilt correction
  • Double rotation
  • Double rotation before detrending
Detrending
  • Block averaging
  • Block averaging
  • Linear detrending
  • Running mean
  • Exponentially weighted average
Time lag compensation
  • Maximum covariance with default (circular  correlation)
  • Maximum covariance with default
  • Maximum covariance without  default
  • Time lag optimizer for closed path systems
  • Constant
  • None
Statistical tests (Vickers and Mahrt, 1997)
  • Spike count/removal
  • Amplitude resolution
  • Dropouts
  • Absolute limits
  • Skewness and kurtosis
  • Spike count/removal
  • Amplitude resolution
  • Dropouts
  • Absolute limits
  • Skewness and kurtosis
  • Discontinuities
  • Time lags
  • Angle of attack
  • Steadiness of horizontal wind
Compensation for density fluctuations
  • Webb-Pearman-Leuning (Webb et al., 1980) or  point-to-point conversion to mixing ratio
  • Webb-Pearman-Leuning (Webb et al.,  1980) or point-to-point conversion to  mixing ratio
Anemometer temperature correction for humidity
  • van Dijk et al. (2004)
  • van Dijk et al. (2004)
  • Kaimal and Gaynor (1991)
Spectral corrections
  • Analytic high-pass filtering correction  (Moncrieff et al., 2004)
  • Analytic low-pass filtering correction  (Moncireff et al., 1997)
  • Analytic high-pass filtering correction  (Moncrieff et al., 2004)
  • Low-pass filtering, select and configure:
    • Moncrieff et al. (1997)
    • Horst (1997)
    • Ibrom et al. (2007)
    • Fratini et al. (2010)
Angle of attack corrections
  • Yes
  • Yes
Quality control flags
  • Tests according to Foken et al. (2004)
  • Tests according to Foken et al. (2004)
  • Optional flagging after Göckede et al.  (2004)
Footprint estimation
  • Kljun et al. (2004)
  • Kljun et al. (2004)
  • Schuepp et al. (1990)
Spectroscopic correction for LI‑7700 (McDermitt et al., 2010)
  • Yes
  • Yes

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