Zenith atmospheric attenuation measurements at millimetre and sub-millimetre wavelengths

Details Zenith atmospheric attenuation measurements at millimetre and sub-millimetre wavelengths Zenith atmospheric attenuation measurements at millimetre and sub-millimetre wavelengths

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.293..550z&link_type=abstract

Nature, vol. 293, Oct. 15, 1981, p. 550-552.

Astronomy and Astrophysics

Astronomy

17

Airglow, Astronomy, Atmospheric Attenuation, Millimeter Waves, Submillimeter Waves, Atmospheric Temperature, Canary Islands, Interferometry, Opacity, Spectrum Analysis, Water Vapor

Scientific paper

The results of spectroscopic sky emission measurements made at an altitude of 2.4 km from a mountain site (Izana) in Tenerife, Canary Islands, are reported. The results are compared with predictions of a monomer water vapor model. An excess absorption is found which is linearly dependent on water vapor density with an approximate power law frequency dependence of 1.22, a dependence that agrees with previous sea level measurements. It is proposed that line shape error is the cause of the excess, and a method is suggested for correcting astronomical observations for atmospheric attenuation and site testing.

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