TY - JOUR
T1 - An experimental assessment of the O3/H2O interference problem in the detection of natural levels of OH via laser induced fluorescence
AU - Davis, D. D.
AU - Rodgers, M. O.
AU - Fischer, S. D.
AU - Asai, K.
PY - 1981/1
Y1 - 1981/1
N2 - Using simulated tropospheric conditions in a laboratory study as well as OH field measurement data from project GAMETAG (Global Atmospheric Measurements Experiment on Tropospheric Aerosol and Gases), an experimental assessment has been completed of the O3/H2O/OH laser induced interference problem. These results indicate that, for the tropical marine boundary layer, the OH interference level averaged ∼38% during the GAMETAG field measurements program. The average “useable” UV laser energy employed in these boundary layer OH measurements was 165 µJ. OH interference estimates in the case of the free troposhere were substantially lower, being ∼13% for an average “useable” UV laser energy of 250 µJ. Modelling calculations suggest that the existing O3/H2O/OH interference problem could be reduced still further, by factors of five to six, through the use of very narrow UV laser pulses (i.e., .5 to 1 ns vs. 7 ns).
AB - Using simulated tropospheric conditions in a laboratory study as well as OH field measurement data from project GAMETAG (Global Atmospheric Measurements Experiment on Tropospheric Aerosol and Gases), an experimental assessment has been completed of the O3/H2O/OH laser induced interference problem. These results indicate that, for the tropical marine boundary layer, the OH interference level averaged ∼38% during the GAMETAG field measurements program. The average “useable” UV laser energy employed in these boundary layer OH measurements was 165 µJ. OH interference estimates in the case of the free troposhere were substantially lower, being ∼13% for an average “useable” UV laser energy of 250 µJ. Modelling calculations suggest that the existing O3/H2O/OH interference problem could be reduced still further, by factors of five to six, through the use of very narrow UV laser pulses (i.e., .5 to 1 ns vs. 7 ns).
UR - http://www.scopus.com/inward/record.url?scp=0006841474&partnerID=8YFLogxK
U2 - 10.1029/GL008i001p00069
DO - 10.1029/GL008i001p00069
M3 - Article
AN - SCOPUS:0006841474
SN - 0094-8276
VL - 8
SP - 69
EP - 72
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 1
ER -