2012_GS_ITEX_LC_ParameterSummary_csv [1]
Description:
Summary of measured and modeled light curve parameters for diffuse, direct, and intermediate light curves for 14 whole-canopy 1mx1m plots sampled near the shrub LTER sites at Toolik Field Station, Alaska, summer 2012.
File upload:
Variables:
YEAR
- Label: YEAR
- Definition: year of measurement
- Type: Date/time
- Date format: YYYY
- Missing values:
- #N/A = Missing or Not Measured
DATE
- Label: DATE
- Definition: date of measurement
- Type: Date/time
- Date format: dd-mmm-yy
- Missing values:
- #N/A = Missing or Not Measured
SITE
- Label: SITE
- Definition: Toolik
- Type: Nominal
- Missing values: None specified
GROUP
- Label: GROUP
- Definition: Measurement location in relation to Toolik Lake LTER Shrub plots; In vicinity of Block1 =Upland, IVO Block 2 =Outlet
- Type: Nominal
- Missing values: None specified
PLOT
- Label: PLOT
- Definition: Individual plot identifier
- Type: Nominal
- Missing values: None specified
TREAT
- Label: TREAT
- Definition: none or fertilised annually (FERT) (with N and P)
- Type: Nominal
- Missing values: None specified
PLOT SIZE
- Label: PLOT SIZE
- Definition: 1m x 1m chamber size
- Type: Nominal
- Missing values: None specified
PHASE
- Label: PHASE
- Definition: Measurement series (round of measurements within each year) ; not used in this dataset
- Type: Physical quantity
- Unit: number
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
CURVE ID
- Label: CURVE ID
- Definition: Light curve identifier
- Type: Nominal
- Missing values: None specified
AVG TIME OF MEASUREMENT
- Label: AVG TIME OF MEASUREMENT
- Definition: avg time light curve taken
- Type: Date/time
- Date format: HH24:Mi:SS
- Missing values:
- #N/A = Missing or Not Measured
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 (umol PAR per meter squared ground per second)
- 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 (umol PAR per umol CO2)
- Type: Physical quantity
- Unit: micromolePerMicromole
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
AVG Measured Re
- Label: AVG Measured Re
- Definition: measured ecosystem respiration (umol CO2 per meter square ground per second)
- 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 light use efficiency (umol CO2 per umol PAR)
- 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 (umol PAR per meter squared ground per second)
- Type: Physical quantity
- Unit: micromolePerMeterSquaredPerSecond
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
AVG CH AIRTEMP
- Label: AVG CH AIRTEMP
- Definition: average chamber air temp during measurment (deg Celsius)
- 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: maximum ambient PAR at which a flux measurement is taken for that light curve (umol PAR per meter squared per second)
- Type: Physical quantity
- Unit: micromolePerMeterSquaredPerSecond
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
GPP600
- Label: GPP600
- Definition: Gross primary productivity at a PPFD of 600 μmol m-2 s-1 (umol CO2 per meter squared ground per second)
- Type: Physical quantity
- Unit: micromolePerMeterSquaredPerSecond
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
AVG BF3 TOT IRRAD
- Label: AVG BF3 TOT IRRAD
- Definition: Average total irradiation measured with DeltaT Beam Fraction sensor (umol PAR per meter squared ground per second)
- Type: Physical quantity
- Unit: micromolePerMeterSquaredPerSecond
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
AVG BF3 DIFFUSE IRRAD
- Label: AVG BF3 DIFFUSE IRRAD
- Definition: Average total diffuse light measured with DeltaT Beam Fraction sensor (umol diffuse PAR per meter squared ground per second)
- Type: Physical quantity
- Unit: micromolePerMeterSquaredPerSecond
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
AVG DIRECT:DIFFUSE LIGHT FRACTION
- Label: AVG DIRECT:DIFFUSE LIGHT FRACTION
- Definition: Average diffuse light divided by total irradiance (umol diffuse PAR per umol total PAR)
- Type: Physical quantity
- Unit: micromolePerMicromole
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
STDEV BF3 TOT IRRAD
- Label: STDEV BF3 TOT IRRAD
- Definition: Standard deviation of total irradiation measured with DeltaT Beam Fraction sensor (umol PAR per meter squared ground per second)
- Type: Physical quantity
- Unit: micromolePerMeterSquaredPerSecond
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
STDEV BF3 DIFFUSE IRRAD
- Label: STDEV BF3 DIFFUSE IRRAD
- Definition: Standard deviation total diffuse light measured with DeltaT Beam Fraction sensor (umol diffuse PAR per meter squared ground per second)
- Type: Physical quantity
- Unit: micromolePerMeterSquaredPerSecond
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
STDEV DIRECT:DIFFUSE LIGHT FRACTION
- Label: STDEV DIRECT:DIFFUSE LIGHT FRACTION
- Definition: Standard deviation diffuse light divided by total irradiance (umol diffuse PAR per umol total PAR)
- Type: Physical quantity
- Unit: micromolePerMicromole
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
DOM VEG
- Label: DOM VEG
- Definition: Dominant canopy vegetation
- Type: Nominal
- Missing values: None specified
DIRECT LAI-5cm
- Label: DIRECT LAI-5cm
- Definition: LAI estimate taken under DIRECT light at 5cm from ground (squared meter leaf per square meter ground)
- Type: Physical quantity
- Unit: meterSquaredPerMeterSquared
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
DIFFUSE LAI-5cm
- Label: DIFFUSE LAI-5cm
- Definition: LAI estimate taken under DIFFUSE light at 5cm from ground (squared meter leaf per square meter ground)
- Type: Physical quantity
- Unit: meterSquaredPerMeterSquared
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- #N/A = Missing or Not Measured
AVG Modeled Re
- Label: AVG Modeled Re
- Definition: modelled ecosystem respiration (umol CO2 per square meter ground per second)
- 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: Comments on NDVI/Unispec measurements
- Type: Nominal
- Missing values: None specified
Number of Records:
34