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Instrument

SLS
Submillimeter Limb Sounder

The Submillimeter Limb Sounder (SLS) was a passive heterodyne radiometer designed for high-altitude balloons and aircraft. It measured thermal emission spectra around 640 GHz to detect chlorine monoxide (ClO), hydrogen chloride (HCl), and ozone (O3), and at 604 GHz for nitric acid (HNO3) and nitrous oxide (N2O). It had a field of view of 0.3 degrees, resulting in a vertical resolution of 1.5 km at an altitude of 25 km. SLS completed a full scan in approximately 300 seconds.

Image of the SLS instrument
NASA's DC-8 flying laboratory passes Antarctica's tallest peak, Mount Vinson, on Oct. 22, 2012, during a flight over the continent to measure changes in the massive ice sheet and sea ice. Credit: NASA/Michael Studinger (Photography courtesy NASA Images)

Instrument Details

Spectrometer/Radiometer
Earth Science > Atmosphere > Atmospheric Chemistry
Earth Science > Spectral/engineering > Infrared Wavelengths > Thermal Infrared
Earth Science > Atmosphere > Atmospheric Chemistry > Oxygen Compounds > Ozone
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Chlorine Monoxide
Earth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > Nitric Acid
Earth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > Nitrous Oxide
Earth Science > Atmosphere > Atmospheric Chemistry > Halocarbons And Halogens > Hydrogen Chloride
Troposphere
300 s
1.5 km
640 GHz, 604 GHz
Currently unavailble

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