Best fit parameters describing net CO2 flux light response curves measured during the ITEX CO2 flux survey 2003-2009.
Variables
YEAR
- Label: YEAR
- Definition: Year measurement taken
- Type: Date/time
- Date format: YYYY
- Missing values: None specified
DATE
- Label: DATE
- Definition: Date measurement taken
- Type: Date/time
- Date format: dd-mmm-yy
- Missing values: None specified
SITE
- Label: SITE
- Definition: Abisko, Imnavait, Toolik, Svalbard, Zackenberg, AR Burn or Barrow
- Type: Nominal
- Missing values: None specified
GROUP
- Label: GROUP
- Definition: Location of flux plots at each site
- Type: Nominal
- Missing values: None specified
PLOT
- Label: PLOT
- Definition: Individual plot identifier
- Type: Nominal
- Missing values: None specified
TREAT
- Label: TREAT
- Definition: Control or fertilised with N and P fertiliser
- Type: Nominal
- Missing values: None specified
PHASE
- Label: PHASE
- Definition: Measurement series (round of measurement within each year)
- Type: Nominal
- Missing values: None specified
PLOT SIZE
- Label: PLOT SIZE
- Definition: Plot size of 1m x 1m or 0.3m x 0.3m or 0.7 x 0.7m
- Type: Nominal
- Missing values: None specified
CURVE ID
- Label: CURVE ID
- Definition: Light curve identifier
- Type: Nominal
- Missing values: None specified
TIME
- Label: TIME
- Definition: time the light curve was taken (avg indicates a combination of more than one curve in a day)
- Type: Nominal
- Missing values: None specified
NDVI
- Label: NDVI
- Definition: NDVI of flux plot
- Type: Physical quantity
- Unit: dimensionless
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
Pmax
- Label: Pmax
- Definition: light saturated photosynthesis parameter
- Type: Physical quantity
- Unit: micromolePerMeterSquaredPerSecond
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
K
- Label: K
- Definition: half saturation constant
- Type: Physical quantity
- Unit: micromolePerMeterSquaredPerSecond
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
Re
- Label: Re
- Definition: ecosystem respiration
- Type: Physical quantity
- Unit: micromolePerMeterSquaredPerSecond
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
Eo
- Label: Eo
- Definition: ecosystem initial light use efficiency
- Type: Physical quantity
- Unit: micromolePerMicromole
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
LCP
- Label: LCP
- Definition: ecosystem light compensation point
- Type: Physical quantity
- Unit: micromolePerMeterSquaredPerSecond
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
AIRTEMP
- Label: AIRTEMP
- Definition: average air temperature
- Type: Physical quantity
- Unit: celsius
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
MAX PAR
- Label: MAX PAR
- Definition: The maximum average PAR value under which a flux measurement is recorded for that curve.
- Type: Physical quantity
- Unit: micromolePerMeterSquaredPerSecond
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
Comments
- Label: Comments
- Definition: explaination of why the curve lacks parameter values
- Type: Nominal
- Missing values: None specified