ICLAS: International Coordination-group on Laser Atmospheric Studies
Sort by: Researcher | Species Measured | Country              Update Personal Directory
 
 

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.

 
 

ICLAS: Officers & Membership | Charter/Purpose
LIDAR DIRECTORY

ILRC: ILRC Description | Next Conference | Past Locations & Chairs | Guidelines for Proposal Submission to Host the ILRC
Abstract & Presentation Rules
Awards: Inaba Prize | Lifetime Achievement | ILRC Awards

 

 

Link: ICLAS Link: Lidar Directory Link: ILRC Link: Awards