[A-AS10] 成層圏・対流圏 (大気圏) 過程とその気候への影響

[AAS10-P06] Introduction to the GODSILA campaign with HYFLITS balloons and PANSY radar at Syowa Station (Antarctica).

Abhiram DODDI¹、Tyler MIXA²、Dale LAWRENCE¹、*Hubert LUCE³、Yoshihiro TOMIKAWA⁴、Masashi KOHMA⁵、Masaki TSUTSUMI⁴、Kaoru Sato⁵ (1.Smead Aerospace Engineering Sciences、2.GATS Inc、3.Research Institute for Sustainable Humanosphere、4.National Institute of Polar Research、5.Department of Earth and Planetary Science)

キーワード：turbulence, ST radar, radiosonde, Antarctica, high resolution

During the JARE65 expedition (austral summer 203-2024), an observation field campaign called GODSILA (Guided Observations of Dynamic Shear Instability Layers over Antarctica) was carried out to measure turbulence and its sources in the tropo-stratosphere at Syowa Station (69°00′S, 39°35′E) near the 47 MHz PANSY radar (Sato et al., 2014). This campaign was possible owing to the financial and logistic support of the National Institute of Polar Research (NIPR) and the U.S. National Science Foundation - Office of Polar Program (NSF-OPP). Forty HYFLITS (Hypersonic Flight in the Turbulent Stratosphere) payloads were deployed for in-situ measurements of turbulence parameters. Developed at the University of Colorado (Lawrence et al., 2023), these low-cost payloads are equipped with fine-wire temperature and wind sensors and a Vaisala RSS421 module. Measurements of turbulence are obtained during the balloon descent to avoid the balloon wake owing to a venting valve system fitted in the neck of the balloon. A first assessment of the balloon and radar data quality and a description of the atmospheric conditions met during the campaign will be given. Preliminary comparison results between radar and balloon data and selected turbulence events of interest will be shown.
Sato, K. et al., Program of the Antarctic Syowa MST/IS radar (PANSY), J. Atmos. Sol.-Terr. Phys., 118, 2-15, 2014
Lawrence D. et al., In-situ Turbulence and Particulate Measurements in Support of the BOLT II Flight Experiment, AIAA SciTech 2023 Paper Submission for the BOLT II Session, 2023.