Abstract
[1] Retrievals of mesospheric O3 using the 1.27 μm emission of O2(a1Δg, υ = 0) are critically dependent on the O2(1Δg) loss rate, which remains an uncertain parameter. We have analyzed the loss of O2(1Δg) after sunset using measurements of its 1.27 μm emission by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) experiment aboard the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) spacecraft. The observed loss rates in the 70 to 90 km altitude region were fit using the Einstein A-Coefficient at 1.27 μm and O2 collisional quenching rate coefficient as parameters. Our results agree well with currently accepted values, and confirm the only existing laboratory measurement of the quenching rate coefficient at mesospheric temperatures.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
