日本地球惑星科学連合2018年大会

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[EE] Eveningポスター発表

セッション記号 P (宇宙惑星科学) » P-EM 太陽地球系科学・宇宙電磁気学・宇宙環境

[P-EM10] Coupling Processes in the Atmosphere-Ionosphere System

2018年5月22日(火) 17:15 〜 18:30 ポスター会場 (幕張メッセ国際展示場 7ホール)

コンビーナ:Liu Huixin(九州大学理学研究院地球惑星科学専攻 九州大学宙空環境研究センター)、Chang Loren(Institute of Space Science, National Central University)、大塚 雄一(名古屋大学宇宙地球環境研究所)

[PEM10-P06] Small-scale Stratospheric Gravity Waves over Poker Flat Alaska

*Brittany Williams1Kim Nielsen1Richard Collins2 (1.Utah Valley University、2.Geophysical Institute, University of Alaska Fairbanks)

キーワード:Gravity waves, Lidar observations, Polar stratosphere

An important property of Atmospheric gravity waves (AGWs) is their ability to transport energy through the atmosphere. While the effects of AGWs have been studied for a number of years, current weather and climate models are still not capable of resolving the majority of small scale waves and their individual energy contributions. Hence, understanding how AGWs propagate from their tropospheric sources and across atmospheric regions is considered one of the most pressing scientific questions in the atmospheric and space sciences. This study investigates the propagation of gravity waves across the stratosphere over the altitude range of 40-80 km utilizing data collected from a Rayleigh lidar system located in interior Alaska. Various methods of extracting gravity waves from lidar systems are discussed. Three years of temperature data have been analyzed to reveal the wave characteristics, wave variability, and estimations of the energy carried by the individual waves.