(ALT) Alert, Nunavut Canada
Site Description
Station Information
Category: Arctic
Collaborating Institutes:
Status: Operational March, 2004
Site Info: Contacts:
Sangeeta Sharma
Environment Canada
4905 Dufferin Street
Toronto, Ontario
M3H 5T4
Canada
phone: (416)-739-5820
fax: (416)-739-5704
Sangeeta.Sharma@ec.gc.ca
Photos:

SEARCH - A Study of Environmental Arctic Change

NOAA and Environment Canada are cooperating closely under the aegis of NOAA's SEARCH program. NOAA/ESRL and Environment Canada have set up an integrated system for monitoring aerosol optical properties, similar to systems at other NOAA/ESRL long-term monitoring sites, e.g., Mauna Loa, HI and Barrow, AK.

ALT Aerosol Properties Plots

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.

Do not quote or cite.

Atmospheric Properties

Short Term Plots (smoothed corrected, 6 min. averages, includes up to last 48 hours of data transferred to GMD): Long-term Plots (smoothed corrected, hourly averages, last 30 days of data):

ALT System Status

These plots are designed to allow NOAA/ESRL/GMD staff to review current station operations. Feel free to browse these plots, but be aware that they are raw unedited data.

Most Recent Atmospheric Properties:
  • Extensive Parameter Summary (scattering, absorption, condensation nuclei)
  • Intensive Parameter Summary (single scattering albedo, backscattering fraction, Ångström exponent)
  • Light Scattering and Absorption Coefficients
  • Light scattering, Humidified Nephelometer
  • Aerosol Intensive Properties, Humidified Nephelometer
  • f(RH) (ratio of wet to dry nephelometer scattering coefficients vs. time)
  • Fitted f(RH)
  • Humidograph (ratio of wet to dry nephelometer scattering coefficients vs. relative humidity)
  • CN concentrations
  • Wind speed and direction
Short Term Status PlotsLong Term Status Plots