Forest Ecosystem Monitoring Cooperative

Clean Air Status and Trend Network (CASTNET): Clean Air Status and Trend Network (CASTNet): Regional Dry Deposition Chemistry

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Metadata Provider

  • Forest Ecosystem Monitoring Cooperative

    • Address:
      705 Spear Street
      South Burlington, Vermont 05403
      United States of America

      Phone: (802) 391-4135
      Email: femc@uvm.edu
      Website: www.uvm.edu/femc

Abstract

    CASTNET is a national monitoring network established to assess trends in pollutant concentrations, atmospheric deposition, and ecological effects due to changes in air pollutant emissions. Regional CASTNET dry deposition chemistry data from New York and northern New England are archived here.

People

  • Tim Scherbatskoy: Content Provider

  • Nancy Burt: Principal Investigator

Keywords

  • air quality, atmospheric deposition, chemistry,

Organizations

  • United States Environmental Protection Agency (EPA) : funder
  • United States Department of Agriculture (USDA), Forest Service Green Mountain National Forest: partner

Geographic Coverage

  • Coordinates

Data Table

  • Title: Clean Air Status and Trend Network (CASTNet): Regional Dry Deposition Chemistry
  • Start Date: 2003-01-01
  • End Date: 2006-11-07
  • Description: Measurement of sulfate, calcium, magnesium, nitrate, potassium, sulfur dioxide, nitric acid and ammonium from filters

  • Purpose: To provide site specific data of wet deposition of major ions. To provide air quality data specific to the Lye Brook Wilderness Area, a Class I Wilderness Area, to support research on the effects of air pollution on the Air Quality Related Values (AQRV) of the wilderness area.

  • Condensed Title: Z0020_DryChemRegional

  • Object Name: VMC.20.231

  • Data Type: mySQL
  • Citation: Nancy Burt. 2007. Clean Air Status and Trend Network (CASTNet): Dry Deposition Chemistry. Linked.

  • Online Distribution: https://vmc.w3.uvm.edu/vmcdevel/data/archive/project/clean-air-status-trend-network-castnet/dataset/clean-air-status-trend-network-castnet-5

Attribute List

    Attribute Name: lab_key
    • Label: Lab ID Number
    • Description: Laboratory sample identification number
    • Storage Type: text
    • Measurment Type: nominal
    Attribute Name: site_id
    • Label: Site ID Number
    • Description: Site identification code
    • Storage Type: text
    • Measurment Type: nominal
    Attribute Name: type
    • Label: Sample Type
    • Description: Sample type code
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: Type Code
      • Code: A
        • Definition: Composite of day/night samples by lab at time of original submittal
      • Code: B
        • Definition: Composite of day/night samples from DRYCHEM_DAYNIGHT
      • Code: C
        • Definition: Continuous sample used for calculation
      • Code: Code
        • Definition: Continuous sample used for calculation
    Attribute Name: dateon
    • Label: Date Sampling Started
    • Description: Date and time sample collection began, Local Standard Time
    • Storage Type: datetime
    • Measurment Type: datetime
    • String Format: YYYY-MM-DD hh:mm:ss
    Attribute Name: dateoff
    • Label: Date Sampling Ended
    • Description: Date and time sample collection ended, Local Standard Time
    • Storage Type: datetime
    • Measurment Type: datetime
    • String Format: M/DD/YYYY hh:mm:ss
    Attribute Name: tso4
    • Label: Teflon Filter Sulphate
    • Description: Sulfate (SO4) concentration from Teflon filter
    • Storage Type: decimal
    • Measurment Type: ratio
    • Standard Unit: customMicrogramsPerCubicMeter
    • Precision: 0.0001
    • Unit: MicrogramsPerCubicMeter
    • Number Type: real
      • Bounds:
      • Minimum: 0
      • Maximum: 1000
    Attribute Name: tso4_f
    • Label: TSO4 Data Flag
    • Description: Data quality code for TSO4
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: DryChem
      • Code: NULL
        • Definition: Null or missing value
      • Code: "#"
        • Definition: Both U and L flags apply
      • Code: I
        • Definition: Invalid chemistry data and/or less than 75% valid flow data
      • Code: L
        • Definition: Less than 90% but greater than or equal to 75% valid flow data
      • Code: M
        • Definition: Missing or completely invalid flow data
      • Code: N
        • Definition: Sample not analyzed
      • Code: R
        • Definition: Re-run value used in calculation
      • Code: S
        • Definition: Both L and R flags apply
      • Code: U
        • Definition: Value is less than detection limit
    Attribute Name: tno3
    • Label: Teflon Filter Nitrate
    • Description: Nitrate (NO3) concentration from Teflon filter
    • Storage Type: decimal
    • Measurment Type: ratio
    • Standard Unit: customMicrogramsPerCubicMeter
    • Precision: 0.0001
    • Unit: MicrogramsPerCubicMeter
    • Number Type: real
      • Bounds:
      • Minimum: 0
      • Maximum: 1000
    Attribute Name: tno3_f
    • Label: TNO3 Data Flag
    • Description: Data quality code for TNO3
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: tno3_f Code
      • Code: #
        • Definition: Both U and L flags apply
      • Code: I
        • Definition: Invalid chemistry data and/or less than 75% valid flow data
      • Code: L
        • Definition: Less than 90% but greater than or equal to 75% valid flow data
      • Code: M
        • Definition: Missing or completely invalid flow data
      • Code: N
        • Definition: Sample not analyzed
      • Code: NULL
        • Definition: Valid data
      • Code: R
        • Definition: Re-run value used in calculation
      • Code: S
        • Definition: Both L and R flags apply
      • Code: U
        • Definition: Undetected - value listed is the reporting limit corrected by flow volume
      • Code: "#"
        • Definition: Both U and L flags apply
    Attribute Name: tnh4
    • Label: Teflon Filter Ammonium
    • Description: Ammonium (NH4) concentration from Teflon filter
    • Storage Type: decimal
    • Measurment Type: ratio
    • Standard Unit: customMicrogramsPerCubicMeter
    • Precision: 0.0001
    • Unit: MicrogramsPerCubicMeter
    • Number Type: real
      • Bounds:
      • Minimum: 0
      • Maximum: 1000
    Attribute Name: tnh4_f
    • Label: TNH4 Data Flag
    • Description: Data quality code for TNH4
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: QCo
      • Code: NULL
        • Definition: Null or missing value
      • Code: "#"
        • Definition: Both U and L flags apply
      • Code: I
        • Definition: Invalid chemistry data and/or less than 75% valid flow data
      • Code: L
        • Definition: Less than 90% but greater than or equal to 75% valid flow data
      • Code: M
        • Definition: Missing or completely invalid flow data
      • Code: N
        • Definition: Sample not analyzed
      • Code: R
        • Definition: Re-run value used in calculation
      • Code: S
        • Definition: Both L and R flags apply
      • Code: U
        • Definition: Value is less than detection limit
    Attribute Name: ca
    • Label: Teflon Filter Calcium
    • Description: Calcium (Ca) concentration from Teflon filter
    • Storage Type: decimal
    • Measurment Type: ratio
    • Standard Unit: customMicrogramsPerCubicMeter
    • Precision: 0.0001
    • Unit: MicrogramsPerCubicMeter
    • Number Type: real
      • Bounds:
      • Minimum: 0
      • Maximum: 1000
    Attribute Name: ca_f
    • Label: CA Data Flag
    • Description: Data quality code for CA
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: ca_f Code
      • Code: #
        • Definition: Both U and L flags apply
      • Code: I
        • Definition: Invalid chemistry data and/or less than 75% valid flow data
      • Code: L
        • Definition: Less than 90% but greater than or equal to 75% valid flow data
      • Code: M
        • Definition: Missing or completely invalid flow data
      • Code: N
        • Definition: Sample not analyzed
      • Code: NULL
        • Definition: Valid data
      • Code: R
        • Definition: Re-run value used in calculation
      • Code: S
        • Definition: Both L and R flags apply
      • Code: U
        • Definition: Undetected - value listed is the reporting limit corrected by flow volume
      • Code: "#"
        • Definition: Both U and L flags apply
    Attribute Name: mg
    • Label: Teflon Filter Magnesium
    • Description: Magnesium (Mg) concentration from Teflon filter ug/m^3
    • Storage Type: decimal
    • Measurment Type: ratio
    • Standard Unit: customMicrogramsPerCubicMeter
    • Precision: 0.0001
    • Unit: MicrogramsPerCubicMeter
    • Number Type: real
    Attribute Name: mg_f
    • Label: MG Data Flag
    • Description: Data quality code for MG
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: mg_f Code
      • Code: #
        • Definition: Both U and L flags apply
      • Code: I
        • Definition: Invalid chemistry data and/or less than 75% valid flow data
      • Code: L
        • Definition: Less than 90% but greater than or equal to 75% valid flow data
      • Code: M
        • Definition: Missing or completely invalid flow data
      • Code: N
        • Definition: Sample not analyzed
      • Code: NULL
        • Definition: Valid data
      • Code: R
        • Definition: Re-run value used in calculation
      • Code: S
        • Definition: Both L and R flags apply
      • Code: U
        • Definition: Undetected - value listed is the reporting limit corrected by flow volume
      • Code: "#"
        • Definition: Both U and L flags apply
    Attribute Name: na
    • Label: Teflon Filter Sodium
    • Description: Sodium (Na) concentration from Teflon filter ug/m^3
    • Storage Type: decimal
    • Measurment Type: ratio
    • Standard Unit: customMicrogramsPerCubicMeter
    • Precision: 0.0001
    • Unit: MicrogramsPerCubicMeter
    • Number Type: real
    Attribute Name: na_f
    • Label: NA Data Flag
    • Description: Data quality code for NA
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: na_f Code
      • Code: #
        • Definition: Both U and L flags apply
      • Code: I
        • Definition: Invalid chemistry data and/or less than 75% valid flow data
      • Code: L
        • Definition: Less than 90% but greater than or equal to 75% valid flow data
      • Code: M
        • Definition: Missing or completely invalid flow data
      • Code: N
        • Definition: Sample not analyzed
      • Code: NULL
        • Definition: Valid data
      • Code: R
        • Definition: Re-run value used in calculation
      • Code: S
        • Definition: Both L and R flags apply
      • Code: U
        • Definition: Undetected - value listed is the reporting limit corrected by flow volume
      • Code: "#"
        • Definition: Both U and L flags apply
    Attribute Name: k
    • Label: Teflon Filter Potassium
    • Description: Potassium (K) concentration from Teflon filter ug/m^3
    • Storage Type: decimal
    • Measurment Type: ratio
    • Standard Unit: customMicrogramsPerCubicMeter
    • Precision: 0.0001
    • Unit: MicrogramsPerCubicMeter
    • Number Type: real
    Attribute Name: k_f
    • Label: K Data Flag
    • Description: Data quality code for K
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: k_f Code
      • Code: #
        • Definition: Both U and L flags apply
      • Code: I
        • Definition: Invalid chemistry data and/or less than 75% valid flow data
      • Code: L
        • Definition: Less than 90% but greater than or equal to 75% valid flow data
      • Code: M
        • Definition: Missing or completely invalid flow data
      • Code: N
        • Definition: Sample not analyzed
      • Code: NULL
        • Definition: Valid data
      • Code: R
        • Definition: Re-run value used in calculation
      • Code: S
        • Definition: Both L and R flags apply
      • Code: U
        • Definition: Undetected - value listed is the reporting limit corrected by flow volume
      • Code: "#"
        • Definition: Both U and L flags apply
    Attribute Name: nso4
    • Label: Nylon Filter Sulfate
    • Description: Sulfate (SO4) concentration from Nylon filter ug/m^3
    • Storage Type: decimal
    • Measurment Type: ratio
    • Standard Unit: customMicrogramsPerCubicMeter
    • Precision: 0.0001
    • Unit: MicrogramsPerCubicMeter
    • Number Type: real
    Attribute Name: nso4_f
    • Label: NSO4 Data Flag
    • Description: Data quality code for NSO4
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: nso4_f Code
      • Code: #
        • Definition: Both U and L flags apply
      • Code: I
        • Definition: Invalid chemistry data and/or less than 75% valid flow data
      • Code: L
        • Definition: Less than 90% but greater than or equal to 75% valid flow data
      • Code: M
        • Definition: Missing or completely invalid flow data
      • Code: N
        • Definition: Sample not analyzed
      • Code: NULL
        • Definition: Valid data
      • Code: R
        • Definition: Re-run value used in calculation
      • Code: S
        • Definition: Both L and R flags apply
      • Code: U
        • Definition: Undetected - value listed is the reporting limit corrected by flow volume
      • Code: "#"
        • Definition: Both U and L flags apply
    Attribute Name: nhno3
    • Label: From Nylon Filter Nitric Acid
    • Description: Nitric acid (NO3) concentration from Nylon filter ug/m^3
    • Storage Type: decimal
    • Measurment Type: ratio
    • Standard Unit: customMicrogramsPerCubicMeter
    • Precision: 0.0001
    • Unit: MicrogramsPerCubicMeter
    • Number Type: real
    Attribute Name: nhno3_f
    • Label: NHNO3 Data Flag
    • Description: Data quality code for NHNO3
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: nhno3_f Code
      • Code: #
        • Definition: Both U and L flags apply
      • Code: I
        • Definition: Invalid chemistry data and/or less than 75% valid flow data
      • Code: L
        • Definition: Less than 90% but greater than or equal to 75% valid flow data
      • Code: M
        • Definition: Missing or completely invalid flow data
      • Code: N
        • Definition: Sample not analyzed
      • Code: NULL
        • Definition: Valid data
      • Code: R
        • Definition: Re-run value used in calculation
      • Code: S
        • Definition: Both L and R flags apply
      • Code: U
        • Definition: Undetected - value listed is the reporting limit corrected by flow volume
      • Code: "#"
        • Definition: Both U and L flags apply
    Attribute Name: wso2
    • Label: SO2 From Whatman Filter
    • Description: Sulfur dioxide (SO2) concentration from Whatman filter ug/m^3
    • Storage Type: decimal
    • Measurment Type: ratio
    • Standard Unit: customMicrogramsPerCubicMeter
    • Precision: 0.0001
    • Unit: MicrogramsPerCubicMeter
    • Number Type: real
    Attribute Name: wso2_f
    • Label: WSO2 Data Flag
    • Description: Data quality code for WSO2
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: wso2_f Code
      • Code: #
        • Definition: Both U and L flags apply
      • Code: I
        • Definition: Invalid chemistry data and/or less than 75% valid flow data
      • Code: L
        • Definition: Less than 90% but greater than or equal to 75% valid flow data
      • Code: M
        • Definition: Missing or completely invalid flow data
      • Code: N
        • Definition: Sample not analyzed
      • Code: NULL
        • Definition: Valid data
      • Code: R
        • Definition: Re-run value used in calculation
      • Code: S
        • Definition: Both L and R flags apply
      • Code: U
        • Definition: Undetected - value listed is the reporting limit corrected by flow volume
    Attribute Name: wno3
    • Label: Whatman Filter Nitrate
    • Description: Nitrate (NO3) concentration from Whatman filter
    • Storage Type: decimal
    • Measurment Type: ratio
    • Standard Unit: customMicrogramsPerCubicMeter
    • Precision: 0.0001
    • Unit: MicrogramsPerCubicMeter
    • Number Type: real
    Attribute Name: wno3_f
    • Label: WNO3 Data Flag
    • Description: Data quality code for WNO3
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: wno3_f Code
      • Code: #
        • Definition: Both U and L flags apply
      • Code: I
        • Definition: Invalid chemistry data and/or less than 75% valid flow data
      • Code: L
        • Definition: Less than 90% but greater than or equal to 75% valid flow data
      • Code: M
        • Definition: Missing or completely invalid flow data
      • Code: N
        • Definition: Sample not analyzed
      • Code: NULL
        • Definition: Valid data
      • Code: R
        • Definition: Re-run value used in calculation
      • Code: S
        • Definition: Both L and R flags apply
      • Code: U
        • Definition: Undetected - value listed is the reporting limit corrected by flow volume
      • Code: "#"
        • Definition: Both U and L flags apply
    Attribute Name: total_so2
    • Label: Total Sulfur Dioxide Calculated Concentration
    • Description: Total sulfur dioxide (SO2) concentration calculated from [WSO2]+0.667*[NSO4] Note W = Whatman filter and N = Nylon filter
    • Storage Type: decimal
    • Measurment Type: ratio
    • Standard Unit: customMicrogramsPerCubicMeter
    • Precision: 0.0001
    • Unit: MicrogramsPerCubicMeter
    • Number Type: real
      • Bounds:
      • Minimum: 0
      • Maximum: 1000
    Attribute Name: total_no3
    • Label: Total Nitrate Calculated Concentration
    • Description: Total nitrate (NO3) concentration calculated from [tno3]+0.9841*[nhno3] Note t=Teflon filter
    • Storage Type: decimal
    • Measurment Type: ratio
    • Standard Unit: customMicrogramsPerCubicMeter
    • Precision: 0.0001
    • Unit: MicrogramsPerCubicMeter
    • Number Type: real
      • Bounds:
      • Minimum: 0
      • Maximum: 1000
    Attribute Name: flow_volume
    • Label: Flow Volume
    • Description: Flow volume
    • Storage Type: decimal
    • Measurment Type: interval
    • Precision: 0.0001
    • Unit: LitersPerMinute
    • Number Type: rational
      • Bounds:
      • Minimum: 0
      • Maximum: 1000
    Attribute Name: flow_volume_f
    • Label: Flow Volume Data Flag
    • Description: Data quality code for FLOW_VOLUME
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: QCo
      • Code: NULL
        • Definition: Null or missing value
      • Code: "#"
        • Definition: Both U and L flags apply
      • Code: I
        • Definition: Invalid chemistry data and/or less than 75% valid flow data
      • Code: L
        • Definition: Less than 90% but greater than or equal to 75% valid flow data
      • Code: M
        • Definition: Missing or completely invalid flow data
      • Code: N
        • Definition: Sample not analyzed
      • Code: R
        • Definition: Re-run value used in calculation
      • Code: S
        • Definition: Both L and R flags apply
      • Code: U
        • Definition: Value is less than detection limit
    Attribute Name: valid_hours
    • Label: Valid Hours
    • Description: Valid hours during sampling period
    • Storage Type: text
    • Measurment Type: nominal
    • Unit: hour
    Attribute Name: valid_hours_f
    • Label: Valid Hours Data Flag
    • Description: Data quality code for VALID_HOURS
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: Valid Hours
      • Code: 32
        • Definition: Valid hours in sampling period hours
      • Code: 33
        • Definition: Flag for VALID_HOURS
    Attribute Name: comment_codes
    • Label: Comment Codes
    • Description: Comment codes (separated by spaces)
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: CommentsCodes
      • Code: 1
        • Definition: Unidentified debris/particles on filter
      • Code: 2
        • Definition: Torn; hole; ripped filter noted during unpacking
      • Code: 3
        • Definition: Excessively wet filter noted upon unpacking
      • Code: 4
        • Definition: Excessively dirty filter noted upon unpacking
      • Code: 5
        • Definition: Filter pack loose upon arrival; possible leakage during sampling period
      • Code: 6
        • Definition: Apparent solenoid problem
      • Code: 7
        • Definition: Filter pack end caps cracked/missing upon receipt
      • Code: 8
        • Definition: Outside of filter pack excessively dirty upon receipt
      • Code: 9
        • Definition: Support screen raised up
      • Code: 10
        • Definition: Insect inside filter pack; noted during unpacking
      • Code: 11
        • Definition: Laboratory accident
      • Code: 12
        • Definition: Filter pack on tower incorrect length of time
      • Code: 13
        • Definition: Filter pack not run in field
      • Code: 14
        • Definition: Unusual odor noticed during unpacking
      • Code: 15
        • Definition: Low extraction efficiency off filter
      • Code: 16
        • Definition: On/off dates and times are assumed
      • Code: 17
        • Definition: Filter given to EPA for analysis
      • Code: 18
        • Definition: Field accident
      • Code: 19
        • Definition: Field equipment problem
      • Code: 20
        • Definition: Filter used for special study
      • Code: 21
        • Definition: Forest fire/agricultural activity in area
      • Code: 22
        • Definition: Site closed
      • Code: 23
        • Definition: Sample report form not received with filter pack
      • Code: 24
        • Definition: Chain of custody incomplete or incorrect
      • Code: 25
        • Definition: Filter pack run out of sequence
      • Code: 26
        • Definition: Suspect value; reason not recorded
      • Code: N
        • Definition: Numeric code following applies to the Nylon filter analysis
      • Code: T
        • Definition: Numeric code following applies to the Teflon filter analysis
      • Code: W
        • Definition: Numeric code following applies to the Whatman filter analysis
    Attribute Name: qa_code
    • Label: QA Code
    • Description: Quality assurance level of the record. (see QAPP for definition of quality assurance levels)
    • Storage Type: text
    • Measurment Type: nominal
    • Custom List: qa Codes
      • Code: d
        • Definition: Dateon or dateoff questionable
      • Code: L1
        • Definition: Level 1 validated data
      • Code: L2
        • Definition: Level 2 validated data
      • Code: x
        • Definition: Data quality issue has been identified and will be resolved in future update

Methods

  • Current Methods
    • Precipitation samples
      • Started: 1994-04-06
      • Method Description: 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
      • Method Description: 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
      • Method Description: 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
      • Method Description: Accumulated weekly samples; analysis includes SO2, HNO3, pH, conductivity, acidity and major ions.

Sampling Equipment

  • No sampling equipment recorded for this dataset

Site Characteristics

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