Measurements of the atmospheric hydroxyl radical (OH) abundance
were made at Boca Raton, Florida, (26° 22' N, 80° 6' W)
during the period March 14 through April 9, 1977. Observations
were made on the P1(1) line of the A^2sigma+ - x^2pi(0,0) rotation band of OH at 3081.7A. By the use of the high
resolution Pepsios (poly-etalon pressure scanning interferometric
optical spectrometer) spectrometer, the narrow
absorption curve due to terrestrial OH was distinguished
from the broad solar Fraunhofer line. Measurements of the
amount of atmospheric OH absorption indicated an average
vertical column abundance of (2.0 +- 0.8) (10^13) molecules/cm^2 for this observation period.
Note
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