Details and Metadata

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Methods

The methods followed in the creation of the dataset, including description of field, laboratory and processing steps, and quality control procedures

Current Methods

  • Precipitation samples
    Started: 1994-04-06

    Weekly collection of precipation for chemical analysis is performed at two different sites. Precipitation amount, pH and conductivity analysis is performed at the sites. The sample is shipped to the NADP Central Analytical Lab in Illinois for analysis of pH, conductivity, Ca, Mg, K, Na, NH4, NO3, Cl, SO4.

  • Ozone and deposition
    Started: 1994-01-01

    Seasonal continuous ozone (May through September), averaged hourly. Deposition (kg/ha) was calculated for chemicals reporting concentration in mg/l for annual, seasonal and montly time steps.

  • Meteorological data
    Started: 1994-01-01

    Continuous meteorology averaged hourly includes ambient temperature at 2 and 10 m height, relative humidity, surface wetness, precipitation, wind speed and direction, solar radiation.

Past Methods (No longer in use)

  • Sample analysis
    Started: 1995-07-04
    Ended: 1999-02-02

    Accumulated weekly samples; analysis includes SO2, HNO3, pH, conductivity, acidity and major ions.

Dataset Fields

Detailed documentation of the fields comprising the dataset, including the type of measurement, units where applicable, and any controlled vocabularies or code lists present in the data


Field Name Caption Description Additional Information
site_idSite Identification

Unique site identifier

Measurement type: Nominal
date_timeDate and time

Date and time measurements were recorded

Measurement type: DateTime
Date/Time Format: YYYY-MM-DD hh:mm:ss
ozoneOzone ppb

Ozone concentration measured in parts per billion

Measurement type: Ratio
Units: dimensionless
Precision: 0.05
ozone_fOzone Data Flagged

Data flagged with quality control code

Measurement type: Ordinal
Ozone Flag Class
+ show
Appears in data asMeaning of code
INot Valid
BNo sample (all data loggeres), channel downed by operator (CR3000 collected data)
NValid with no conditions
MMissing data
ozone_8hr8 hour average

Average ozone concentration measured in 8 hours

Measurement type: Ratio
Units: dimensionless
Precision: 0.05

Sampling Equipment

Equipment and software used to collect data, including how that equipment was used.

No sampling equipment recorded for this dataset

Site Characteristics

The spatial extent of the dataset site coverage, and descriptions of the spatial extent and context for the data collection

  • Site Description

    Green Mountain National Forest, Stratton, just south of the Lye Brook Wilderness Area boundary. Summit of hill with southwest airflow.