A helium-cooled IR spectrometer with a diffraction-limited telescope was launched on 23 Sept. 1983 from Aire-sur-l'Adour (France) as part of the MAP/Globus 1983 campaign. The float altitude of the balloon was 38 km. Limb scan measurements of atmospheric emissions were taken in the 5.5-19-microm wavelength region. The measurements were performed ~1 h before sunrise. From several spectral features volume mixing ratios of NO(2), H(2)O, CH(4), HNO(3), O(3), and N(2)O were derived.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1364/AO.26.003097 | DOI Listing |
A helium-cooled IR spectrometer with a diffraction-limited telescope was launched on 23 Sept. 1983 from Aire-sur-l'Adour (France) as part of the MAP/Globus 1983 campaign. The float altitude of the balloon was 38 km.
View Article and Find Full Text PDFThe IR limb emission of the lower stratosphere has been measured using a balloon-borne liquid nitrogencooled Michelson interferometer with liquid helium-cooled Si:Ga detectors. Portions of the thermal emission spectrum have been recorded between 650 and 2000 cm(-1) with an unapodized spectral resolution of 0.03 cm(-1).
View Article and Find Full Text PDFA series of far-ir Michelson interferometers utilizing the rapid-scanning technique have been designed and built for balloon-borne measurement of the emission spectrum of the stratosphere. Design criteria for such instrumentation are presented, and details of the evolution of these designs are discussed, including liquid helium-cooled bolometer detector systems, internal blackbody calibration, and atmospheric limb-scanning. Stratospheric emission spectra between 30 cm(-1) and 110 cm(-1) at a resolution of 0.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!