Studies of noctilucent clouds from the stratosphere during the SONC balloon-borne experiment in 2021

P. Dalin, H. Suzuki, N. Pertsev, V. Perminov, D. Efremov, P. Voelger, V. L. Narayanan, I. Mann, I. Häggström, M. Zalcik, O. Ugolnikov, J. Hedin, J. Gumbel, R. Latteck, G. Baumgarten

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Abstract

On the night 16–17 August 2021, a balloon-borne experiment called Stratospheric Observations of Noctilucent Clouds (SONC) was successfully performed. A big scientific balloon, having onboard three automated cameras for studies of noctilucent clouds (NLC), was launched to 32.7 km altitude from Esrange (northern Sweden). All three NLC cameras and electronics were completely operational in the stratosphere for more than 10 h at low temperatures of about −30 °C. Two wide angle cameras registered an extended NLC field of about 1700 km long in the twilight sky sector from the north-west to the north-east of Esrange. NLC were of a moderate brightness and were located at high latitudes between 68° and 71°N. The NLC field was located in a cold area (138–142 K) below the frost point temperature (145–148 K) in the mesopause region that was confirmed by Aura/MLS satellite and Esrange lidar measurements. The balloon-borne NLC measurements were accompanied by ground-based lidar and radar measurements. The latter have registered Polar Mesosphere Summer Echoes (PMSE) in the same volume of the summer mesopause along with NLC observed from the stratosphere that has been performed for the first time above northern Scandinavia. We describe the technique and method of the NLC observation from the stratosphere as well as present the first scientific results of the SONC experiment.

Original languageEnglish
Article number105959
JournalJournal of Atmospheric and Solar-Terrestrial Physics
Volume240
Early online date30 Sept 2022
DOIs
Publication statusPublished - 15 Nov 2022

Bibliographical note

Funding Information:
The XENON balloon flight was provided by the French space agency CNES funded by the European Union's Horizon 2020 research and Innovation programme, and received support from the European Commission in the frame of the UE grant agreement -730970-HEMERA . The SONC experiment hardware (the NLC imager and electronic unit) was funded by the Kempe Foundation ( Kempestiftelserna , Sweden) under grant agreement JCK-1901.4. Ingrid Mann and Viswanathan Lakshmi Narayanan are supported by the Research Council of Norway project 275503 , and their EISCAT observations are supported by the Research Council of Norway project 245683 . The authors thank the Aura/MLS team for providing temperature and water vapor data around the globe.

Keywords

  • Atmospheric gravity waves<abstractend>
  • Balloon-borne stratospheric observations
  • Mesospheric dynamics
  • Noctilucent clouds

ASJC Scopus subject areas

  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science

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