ARC_Lakes_Chemistry_2000-2009_excel

Excel file with sheets for metadata and data. _x000D_
Water chemistry data for various lakes near Toolik Research Station, Arctic LTER. Summer 2000 to 2009.

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Variables

SortChem_#
  • Label: SortChem_#
  • Definition: Number used to identify samples - generally not used until later data but column remains with older data to enable comparison
  • Type: Nominal
  • Missing values: None specified
Site
  • Label: Site
  • Definition: Site Name: Name of the lake where measurements were taken. There are discrete sampling sites defined by water depth, generally they are at the point of maximum depth.
  • Type: Nominal
  • Missing values: None specified
Date
  • Label: Date
  • Definition: Date readings were taken on.
  • Type: Date/time
  • Date format: dd-mmm-yyyy
  • Missing values: None specified
Depth (m)
  • Label: Depth (m)
  • Definition: Depth from surface of lake, stream, or soil starting from the surface as 0. This depth corresponds with data in other files (Primary Production, Physical Chemistry)
  • Type: Physical quantity
  • Unit: meter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
Corrected_Chl_ug/L
  • Label: Corrected_Chl_ug/L
  • Definition: Chlorophyll- a corrected for pheophytin (aka Active Chlorophyll)
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
Total_Chl_ug/l
  • Label: Total_Chl_ug/l
  • Definition: Total chlorophyll (uncorrected for pheophytin)
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
Pheo_ug/l
  • Label: Pheo_ug/l
  • Definition: Pheophytin
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
NH4OPA_uM
  • Label: NH4OPA_uM
  • Definition: Ammonium concentrations from OPA fluorometric analysis
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
NH4 Indol_uM
  • Label: NH4 Indol_uM
  • Definition: Ammonium concentrations from indol/ phenol analysis
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
PO4_uM
  • Label: PO4_uM
  • Definition: phosphate concentrations from colormetric analysis
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
NO3_uM
  • Label: NO3_uM
  • Definition: nitrate+nitrite concentrations from colormetric analysis
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
TDN_uM
  • Label: TDN_uM
  • Definition: Total dissolved nitrogen
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
TN_uM
  • Label: TN_uM
  • Definition: Total nitrogen. This value is the sum of TDN and particulate nitrogen
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
TP_uM
  • Label: TP_uM
  • Definition: Total phosphorus. This value is the sum of TDP and particulate phosphorus
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
TDP_uM
  • Label: TDP_uM
  • Definition: Total dissolved phosphorus
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
PP-ug/l
  • Label: PP-ug/l
  • Definition: Particulate phosphorus
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
PP_uM
  • Label: PP_uM
  • Definition: Particulate phosphorus
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
PN-ug/l
  • Label: PN-ug/l
  • Definition: Particulate nitrogen
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
PN_uM
  • Label: PN_uM
  • Definition: Particulate nitrogen
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
PC-ug/l
  • Label: PC-ug/l
  • Definition: Particulate carbon
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
PC_uM
  • Label: PC_uM
  • Definition: Particulate carbon
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
DOC_uM
  • Label: DOC_uM
  • Definition: Dissolved organic carbon
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
DIC_uM
  • Label: DIC_uM
  • Definition: Dissolved inorganic carbon
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
Alk_meqL
  • Label: Alk_meqL
  • Definition: Total alkalinity (carbonate and non-carbonate alkalinity)
  • Type: Physical quantity
  • Unit: milliequivalentPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
SO4_uM
  • Label: SO4_uM
  • Definition: Dissolved sulfate concentration
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
Cl_uM
  • Label: Cl_uM
  • Definition: Dissolved chloride concentration
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
Ca_uM
  • Label: Ca_uM
  • Definition: Dissolved calcium concentration
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
Mg_uM
  • Label: Mg_uM
  • Definition: Dissolved magnesium concentration
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
Na_uM
  • Label: Na_uM
  • Definition: Dissolved sodium concentration
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
K_uM
  • Label: K_uM
  • Definition: Dissolved potassium concentration
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
Si_uM
  • Label: Si_uM
  • Definition: Silica concentration
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
Notes
  • Label: Notes
  • Definition: Notes specific to the sample
  • Type: Nominal
  • Missing values: None specified
Data Source Details

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Field delimiter: 

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