Sampling Stations Page

Site Description
Station Information
Category: Baseline Station
Status: Operational - 1976, Major upgrade - October, 1997
Photos and Drawings:

The Barrow station began measuring aerosol radiative properties in 1976. Since 1988, simultaneous measurements of light absorption and light scattering (as a function of wavelength) have been made. A major upgrade of the aerosol sampling system was completed on October 5, 1997. The new system was funded by the Atmospheric Radiation Measurement program of the U.S. Department of Energy (DOE/ARM). The new system provides aerosol measurements that are quantitatively comparable to measurements at other NOAA/ESRL and DOE/ARM sites. In addition to improved instrumentation, the new system measures aerosol properties in two particle size ranges at a controlled relative humidity. The old and new systems were operated in parallel for one year to evaluate any potential biases introduced in to the long time series of aerosol measurements at Barrow. The new system was referred to as North Slope of Alaska (NSA) during the overlap period. A comparison of the measurements shows good agreement between the old and new systems. April 2002 provided an opportunity to observe Asian dust at Barrow.

BRW Aerosol Properties Plots

Statistical Summary Plots - Multi-year record of final aerosol and atmospheric property data.

Do not quote or cite.

Atmospheric Properties

These plots are designed to provide a quick look at the measured aerosol properties. They display raw unedited data, but known corrections for instrument errors have been applied.

Short-Term Status Plots (last 48 hours) Long-Term Averaged Plots (hourly averages, last 30 days)
Extensive Parameter SummaryExtensive Parameter Summary
Spectral CoefficientsSpectral Coefficients
Spectral Coefficients (Humidified)Spectral Coefficients (Humidified)
Intensive Parameter SummaryIntensive Parameter Summary
Intensive Parameter Summary (Humidified)Intensive Parameter Summary (Humidified)
CCN Fit ParametersCCN Fit Parameters
Wind Speed and DirectionWind Speed and Direction
CNC Status/FlowsCNC Status/Flows
CCN StatusCCN Status
PSAP StatusPSAP Status
CLAP AbsorptionCLAP Absorption
CLAP StatusCLAP Status
MAAP Absorption Plot Not AvailableMAAP Absorption Plot Not Available
MAAP Status Plot Not AvailableMAAP Status Plot Not Available
Nephelometer Background ReferenceNephelometer Background Reference
Nephelometer Background Reference (Humidified)Nephelometer Background Reference (Humidified)
Nephelometer StatusNephelometer Status
Nephelometer Status (Humidified)Nephelometer Status (Humidified)
Temperature, Humidity and Dew PointTemperature, Humidity and Dew Point
Filter StatusFilter Status
uMAC StatusuMAC Status
Aethalometer EBCAethalometer EBC
Aethalometer StatusAethalometer Status

Summary Status Plots

One Year Summary Status Plots Time Series (Entire Record) Summary Status Plots
Nephelometer StatusNephelometer Status
Wet Nephelometer StatusWet Nephelometer Status