Remote infrared heterodyne radiometer measurements of atmospheric ammonia profiles

Details Remote infrared heterodyne radiometer measurements of atmospheric ammonia profiles Remote infrared heterodyne radiometer measurements of atmospheric ammonia profiles

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..313h&link_type=abstract

Geophysical Research Letters, vol. 7, May 1980, p. 313-316.

Physics

6

Ammonia, Annual Variations, Atmospheric Composition, Infrared Radiometers, Radiation Measurement, Vertical Distribution, Absorption Spectra, Heterodyning, High Resolution, Spectral Resolution, Transmittance, Troposphere

Scientific paper

An infrared heterodyne radiometer has been used to study the seasonal variation of the vertical distribution of atmospheric ammonia. The ammonia profiles are inferred from high-resolution atmospheric solar transmittance measurements around the ammonia absorption feature at 927.32323 kaysers. The transmittance data are obtained from six IF channels with spectral resolutions ranging from .0067 to .033 kaysers. Results from this study show a marked decrease in the tropospheric ammonia level with a decrease at ground level from approximately 10 ppb in March 1979 to 1.3 ppb in August 1979.

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