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

  • Lye Brook sampling
    Started: 2016-08-22

    Lye Brook sampling includes PM 2.5 mass, ions, elements, elemental & organic carbon and PM 10. Sampling began 9/91 and is conducted twice weekly (Wednesday & Saturday).



  • Lye Brook sampling includes PM 2.5 mass, ions, elements, elemental & organic carbon and PM 10. Sampling change from twice weekly (91-00) to every third day (6/00).

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
ALfALf

ammNO3fammNO3f

ammSO4fammSO4f

ASfASf

BRfBRf

CAfCAf

CHLfCHLf

CLfCLf

CM_calculatedCM_calculated

CRfCRf

CUfCUf

DatasetDataset

EC1fEC1f

EC2fEC2f

EC3fEC3f

ECfECf

fAbsfAbs

fAbs_HIPSfAbs_HIPS

fAbs_HIPS:Value2fAbs_HIPS:Value2

fAbs_LIPMfAbs_LIPM

fAbs_LIPM:Value2fAbs_LIPM:Value2

FEfFEf

HfHf

KfKf

MFMF

MGfMGf

MNfMNf

MOfMOf

MTMT

N2fN2f

NAfNAf

NH4fNH4f

NIfNIf

NO3fNO3f

OC1fOC1f

OC2fOC2f

OC3fOC3f

OC4fOC4f

OCfOCf

OMCfOMCf

OMCf_1_4OMCf_1_4

OPfOPf

PBfPBf

PfPf

RBfRBf

RCFMRCFM

SeaSaltfSeaSaltf

SEfSEf

SfSf

SIfSIf

SO2SO2

SO4fSO4f

SOILfSOILf

SRfSRf

TIfTIf

VfVf

ZNfZNf

ZRfZRf

SiteCodeSite Code

Unique site identifier

Nominal
DateSample Date

Date sampling occurred

DateTime Date/Time Format: YYYYMMDD
POCPrimary Organic Carbon

Organic carbons attached to one other carbon

Ratio Units: dimensionless
Precision: 1
ALf:Value2Aluminum (Fine)

Fine particle aluminum

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
NH4f:Value2Ammonium Ion (Fine)

Mass of ammonium particles < 2.5 um in diameter

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
ammNO3f:Value2Ammonium Nitrate (Fine)

Fine particle ammonium nitrate

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
ammNO3f_bextAmmonium nitrate extinction (Fine)

Fine ammonium nitrate light extinction coefficient

Ratio Units: dimensionless
Precision: 0.00001
ammSO4f:Value2Ammonium Sulfate (Fine)

Fine particle ammonium sulfate

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
ammSO4f_bextAmmonium sulfate extinction: Fine

Fine ammonium sulfate light extinction coefficient

Ratio Units: dimensionless
Precision: 0.00001
ASf:Value2Arsenic (Fine)

Fine particle arsenic

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
BRf:Value2Bromine (Fine)

Fine particle bromine

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
CAf:Value2Calcium (Fine)

Mass of calcium particles < 2.5 um in diameter

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
ECf_bextElemental Carbon Extinction (Fine)

Fine elemental carbon light extinction coefficient

Ratio Units: dimensionless
Precision: 0.00001
EC1f:Value2Carbon, Elemental Fraction 1 (Fine)

Fine elemental carbon fraction 1

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
EC2f:Value2Carbon, Elemental Fraction 2 (Fine)

Fine elemental carbon fraction 2

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
EC3f:Value2Carbon, Elemental Fraction 3 (Fine)

Fine elemental carbon fraction 3

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
ECf:Value2Carbon, Elemental Total (Fine)

Total fine elemental carbon fraction

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
OC1f:Value2Carbon, Organic Fraction 1 (Fine)

Fine organic carbon fraction 1

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
OC2f:Value2Carbon, Organic Fraction 2 (Fine)

Fine organic carbon fraction 2

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
OC3f:Value2Carbon, Organic Fraction 3 (Fine)

Fine organic carbon fraction 3

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
OC4f:Value2Carbon, Organic Fraction 4 (Fine)

Fine organic carbon fraction 4

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
OMCf_1_4:Value2Carbon: Fine organic mass

Fine organic carbon mass 1.4 * OC

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
OPf:Value2Carbon, Organic Pyrolized (Fine)

Pyrolized fine organic carbon

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
OCf:Value2Carbon, Organic Total (Fine)

Total fine organic carbon

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
CHLf:Value2Chloride (Fine)

Fine particle chloride

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
CLf:Value2Chlorine (Fine)

Fine particle chlorine

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
CRf:Value2Chromium (Fine)

Fine particle chromium

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
CM_bextCoarse mass extinction

Coarse mass light extinction coefficient

Ratio Units: dimensionless
Precision: 0.00001
CUf:Value2Copper (Fine)

Fine particle copper

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
dvDeciview

Unit of measurement of haziness based on extinction coeffecient and visual range

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
fAbs:Value2 Filter Absorption Coefficient

The effect of the filter on the absorption measurements

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
Hf:Value2Hydrogen (Fine)

Fine particle hydrogen

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
FEf:Value2 Iron (Fine)

Fine particle iron

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
PBf:Value2Lead (Fine)

Fine particle lead

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
babsLight absorption coefficient

The effect of background absorbance on the absorption measurements

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
MGf:Value2Magnesium (Fine)

Fine particle magnesium

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
MNf:Value2 Manganese (Fine)

Fine particle manganese

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
MT:Value2 Mass, PM10 (Total)

Total mass of particles < 10 mircons in size

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
MF:Value2 Mass, PM2.5 (Fine)

Total mas of particles < 2.5 microns in size

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
CM_calculated:Value2Mass, PM2.5 - PM10 (Coarse)

Mass of particles between 2.5 and 10 microns in size

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
RCFM:Value2Mass, PM2.5 Reconstructed (Fine)

Reconstructed fine mass

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
MOf:Value2Molybdenum (Fine)

Fine particle molybdenum

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
NIf:Value2 Nickel (Fine)

Fine particle nickel

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
NO3f:Value2 Nitrate (Fine)

Fine particle nitrate

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
N2f:Value2Nitrite (Fine)

Fine particle nitrite

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
OMCf:Value2Organic Mass (Fine)

Fine particle organic mass

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
OMCf_bextOrganic carbon extinction fraction

Organic carbon light extinction coeffecient

Ratio Units: dimensionless
Precision: 0.00001
Pf:Value2Phosphorus (Fine)

Fine particle phosphorus

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
Kf:Value2Potassium (Fine)

Fine particle potassium

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
RHgridRelative Humidity

Station relative humidity

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
fRHgridRelative Humidity Factor

Climatological average RH from EPA

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
RBf:Value2Rubidium (Fine)

Fine particle rubidium

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
SeaSaltf:Value2Sea Salt (Fine)

Fine particle sea salt

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
SEf:Value2Selenium (Fine)

Fine particle selenium

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
SIf:Value2Silicon (Fine)

Fine particle silicon

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
NAf:Value2Sodium (Fine)

Fine particle sodium

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
SOILf:Value2Soil (Fine)

Fine particle soil

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
SOILf_bextFine soil extinction fraction

Fine soil light extinction coeffecient

Ratio Units: dimensionless
Precision: 0.00001
SRf:Value2 Strontium (Fine)

Fine particle strontium

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
SO4f:Value2Sulfate (Fine)

Fine particle sulfate

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
Sf:Value2Sulfur (Fine)

Fine particle sulfur

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
SO2:Value2 Sulfur Dioxide

Sulfur dioxide gas

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
TIf:Value2Titanium (Fine)

Fine particle titanium

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
aerosol_bextAerosol extinction

Aerosol light extinction coeffecient

Ratio Units: dimensionless
Precision: 0.00001
Vf:Value2Vanadium (Fine)

Fine particle vanadium

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
ZNf:Value2Zinc (Fine)

Fine particle zinc

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001
ZRf:Value2Zirconium (Fine)

Fine particle Zirconium

Ratio
Unit: micrograms per cubic meter
Precision: 0.00001

Sampling Equipment

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

Current Equipment

  • Aerosol sampler

    IMPROVE Module A Sampler

  • Duplicate sampler

    Duplicate sampler for precision purposes.

Site Characteristics

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

  • Site Description

    Consistent with US EPA PM-2.5 Siting Criteria.

  • Site Description

    Field station for Lye Brook moved to Mt. Snow from Mt. Equinox, sampling began in December, 2011.

    Minimum Altitude: 1006 meter

    Maximum Altitude: 1006 meter