In situ detection of tropospheric OH, HO2, NO2, and NO by laser-induced fluorescence in detection chambers at reduced pressures. Semiannual progress report, 1 April-30 September 1993

Technical Report · Wed Dec 01 04:00:00 EST 1993

OSTI ID:5178196

Brune, W H

This report is a brief summary of the status of work on the grant entitled 'In situ detection of tropospheric OH, HO2, NO2, and NO by laser induced fluorescence in detection chambers at low pressures.' The basic instrument characteristics have been established, and have been reported in a manuscript, included as an appendix to this report, that has been accepted by the Journal of Geophysical Research. Currently, two efforts are under way. First, instrument tests and calibrations are continuing. These efforts include field measurements and an informal intercomparison in Colorado last August and September. Second, new technologies in lasers and detectors are being implemented to make the instrument smaller, lighter, and more energy efficient. Such instrument modifications are essential for measurements from aircraft, high scaffolding in forests, and ships.

• Research Organization: Pennsylvania State Univ., University Park, PA (United States). Davey Lab.
• OSTI ID: 5178196
• Report Number(s): N-94-23277; NASA-CR--194810; NAS--1.26:194810; CNN: NAG1-1057
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
CHALCOGENIDES
DOCUMENT TYPES
EARTH ATMOSPHERE
EMISSION SPECTROSCOPY
FLUORESCENCE SPECTROSCOPY
HYDROXYL RADICALS
LOW PRESSURE
MEASURING METHODS
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
NITROUS OXIDE
OXIDES
OXYGEN COMPOUNDS
PEROXIDES
PROGRESS REPORT
RADICALS
SPECTROSCOPY
TROPOSPHERE