The NOAA Climate Monitoring Diagnostics Laboratory (CMDL) Aerosol Data from the NOAA Climate Diagnostics Center via WWW
Entry ID: OAR0008
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The NOAA Climate Monitoring and Diagnostics Laboratory (CMDL) address|
on the WWW is 'http://www.cmdl.noaa.gov/'.
This data set records light-scattering coefficient and condensation
nuclei concentration measurements, taken from four monitoring stations
at remote locations. The data are collected by the Geophysical
Monitoring for Climatic Change (GMCC) Program to measure the
concentrations and characteristics of gaseous and aerosol species in
the atmosphere. The mission of the GMCC program is to detect any
long-term trends in the concentrations of these species caused by
anthropogenic or natural sources, and to assess possible climatic
effects that may result from these changes.
The four monitoring stations are located at 1) Barrow, Alaska; 2)
Mauna Loa, Hawaii; 3) Cape Matatula, American Samoa; and 4)
Amundsen-Scott Station, South Pole, Antarctica. All are located on
approximately the same longitude and are situated to allow sampling of
Arctic, northern midtropical, southern midtropical, and Antarctic air.
The stations are located at remote sites to minimize the effect of
local pollution sources.
At each station, a condensation nucleus counter measures the
condensation nuclei concentration, and nephelometers measure the
scattering portion of extinction due to aerosol particles in the
atmosphere at four wavelengths, 450, 550, 700, and 850 nm. The output
signal of each instrument is sampled once per second, and data are
stored on magnetic tape in the form of 1-min and 1-hour means. The
data are then edited on an hourly basis to eliminate bad data, fill
missing data from backup instruments, and apply final calibrations.
A nearly continuous record is available from the Barrow station since
1971, from Mauna Loa since 1974, from Samoa since 1977, and from the
South Pole since 1974. All GMCC aerosol data are available from the
principal investigator in magnetic tape, printout, graphic, or
|N: 69.0||S: 68.0||E: -156.0||W: -157.0||
|N: 22.0||S: 21.0||E: -158.0||W: -159.0||
|N: -14.0||S: -15.0||E: -170.0||W: -171.0||
|N: -90.0||S: -90.0||E: 0.0||W: -0.0||
|Start Date: 1974-01-01|
|ATMOSPHERE >AEROSOLS >AEROSOL EXTINCTION [Definition]|
|ATMOSPHERE >AEROSOLS >CLOUD CONDENSATION NUCLEI [Definition]|
|ATMOSPHERE >AIR QUALITY >TURBIDITY [Definition]|
|ATMOSPHERE >AIR QUALITY >VISIBILITY [Definition]|
ISO Topic Category
|ESRL STATIONS >NOAA Earth Science Research Laboratory Stations [Information]|
|GROUND STATIONS [Information]|
|CNC >Condensation Nuclei Counter [Information]|
Climate Analysis Branch, Physical Sciences Division, Earth System Research Laboratory, OAR, NOAA, U.S. Department of Commerce
Data Center URL: http://www.esrl.noaa.gov/psd/psd1/
Role: TECHNICAL CONTACT
Phone: (303) 497-6659
Fax: (303) 497-6290
Email: bbodhaine at cmd1.noaa.gov
Aerosols, Radiation, Ozone and Water
Vapor Monitoring, R/E/CG1
Province or State: CO
Postal Code: 80303
Bodhaine, B. A., Aerosol measurements at four background sites, J. Geophys.
Res., 88, 10753 - 10768, 1983.
Res., 88, 10753 - 10768, 1983.
Creation and Review Dates
Last DIF Revision Date: 2009-01-21
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