Variables Date Label: Date Definition: date of observation Type: Date/time Date format: MM/DD/YYYY Missing values: None specified Variables (legacy): Site Label: Site Definition: UMBS site location at which measurements were taken: FASET tower or PROPHET tower. Type: Code list Codes: FASET = UMBS FASET Tower PROPHET = UMBS PROPHET Tower Missing values: None specified , time_on Label: Time On Definition: Time at which measurement began. Type: Nominal Missing values: None specified , time_off Label: Time Off Definition: Time at which measurement ended. Type: Nominal Missing values: None specified , sensible_heat Label: Sensible Heat Definition: The amount of energy released or absorbed by a substance during a change of temperature. Type: Physical quantity Unit: wattsPerMetersSquared Maximum: Not specified Minimum: Not specified Precision: 1e-07 Missing values: -999 = , isoprene_flux Label: Isoprene Flux Definition: Flux measurement for the volatile organic compound isoprene. Type: Physical quantity Unit: milligramsPerMetersSquaredPerHour Maximum: Not specified Minimum: Not specified Precision: 1e-09 Missing values: -999 = , isoprene_conc Label: Isoprene Concentration Definition: The concentration of the volatile organic compound isoprene. Type: Physical quantity Unit: partsPerBillionByVolume Maximum: Not specified Minimum: Not specified Precision: 1e-06 Missing values: NA = , a-pinene_sims_flux Label: A-pinene SIMS Flux Definition: Flux measurement for the volatile organic compound a-pinene using the selected ion mass spectrometer (SIMS). Type: Physical quantity Unit: milligramsPerMetersSquaredPerHour Maximum: Not specified Minimum: Not specified Precision: 1e-09 Missing values: NA = , a-pinene_fid_flux Label: A-pinene FID flux Definition: The concentration of the volatile organic compound a-pinene using the flame ion detector (FID). Type: Physical quantity Unit: milligramsPerMeterSquaredPerHour Maximum: Not specified Minimum: Not specified Precision: 1e-09 Missing values: NA = , a-pinene_sims_conc Label: A-pinene SIMS concentration Definition: The concentration of the volatile organic compound a-pinene using selected ion mass spectrometer (SIMS). Type: Physical quantity Unit: partsPerBillionByVolume Maximum: Not specified Minimum: Not specified Precision: 1e-09 Missing values: NA = , a-pinene_fid_conc Label: A-pinene FID concentration Definition: The concentration of the volatile organic compound a-pinene using flame ion detector (FID). Type: Physical quantity Unit: partsPerBillionByVolume Maximum: Not specified Minimum: Not specified Precision: 1e-09 Missing values: NA = Related sites: UMBS PROPHET TowerUMBS FASET TowerCSV Header Lines: 4