LIDAR
RESEARCHER: Dr. John E. Barnes
RESEARCH ASSOCIATES: Dr. David J. Hofmann
MAILING ADDRESS: Mauna Loa Observatory
TELEPHONE NUMBER: 808-933-6965
FAX NUMBER: 808-933-6967
E-MAIL ADDRESS: John.E.Barnes@noaa.gov
WEB SITE: http://www.mlo.noaa.gov
DATE: January 30, 2003
LIDAR LOCATION (CITY, COUNTRY, LAT., LONG.): Mauna
Loa Observatory, Hawaii, USA, 19.539 deg N, 155.578 deg W
SITE ELEVATION: 3397 meters
PARAMETER(S) OR CONSTITUENT(S) MEASURED: Aerosol,
temperature, water vapor
RESEARCH OBJECTIVES AND SPONSOR: Stratospheric
change, satellite validation of water vapor, National Oceanic
and Atmospheric Administration
MEASUREMENT TECHNIQUE:
Stratospheric and tropospheric aerosol backscatter (532 nm and
1064 nm);
Temperature from 35 to 70 km;
Raman water vapor (660 nm) from 4 to 16 km.
MEASUREMENT RANGE: See above.
VERTICAL RESOLUTION: 300 meters
FREQ. OF MEASUREMENT (TYPICALLY): Once/week
MEASUREMENT TIMES (TYPICALLY): One hour for aerosols,
two hours for temperature and water vapor.
LASER TYPE AND WAVELENGTH (s): Nd:Yag, 0.67 Joule
at 532 nm, 0.67 Joule at 1064 nm
LASER ENERGY/PULSE: See above.
PULSE REPETITION RATE: 30 Hz.
RECEIVER SIZE AND CONFIGURATION: Four telescopes:
61 cm, 61 cm, 74 cm, 40 cm.
DETECTORS USED: Photomultiplier detectors.
SIGNAL PROCESSING: using photon counting.
ANALOG-T0-DIGITAL CONVERTER: No
COMPUTER: PC
PLATFORM (if applicable):
PUBLICATIONS (5 recent and/or significant):
Barnes, J. E., and D. J. Hofmann, Lidar measurements
of stratospheric aerosol over Mauna Loa Observatory, Geophys.
Res. Lett., 24, 1923-1926, 1997.
Barnes, J. E., and D. J. Hofmann, Variability
in the stratospheric background aerosol over Mauna Loa Observatory,
Geophys. Res. Lett., 28, 2895-2898, 2001.
Barnes, J. E., and P. B. Hayes, Pressure shifts
and pressure broadening of the B and Gamma bands of oxygen, J.
of Molecular Spectroscopy, 216, 98-104, 2002.
Barnes, J. E., S. Bronner, R. Beck, and
N. C. Parikh, Boundary layer scattering measurements with a CCD
camera lidar, J. of Applied Optics, in press.
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