INVESTIGADORES
DE LA TORRE Alejandro
artículos
Título:
SOUTHTRAC-GW: An Airborne Field Campaign to Explore Gravity Wave Dynamics at the World’s Strongest Hotspot
Autor/es:
RAPP, MARKUS; KAIFLER, BERND; DÖRNBRACK, ANDREAS; GISINGER, SONJA; MIXA, TYLER; REICHERT, ROBERT; KAIFLER, NATALIE; KNOBLOCH, STEFANIE; ECKERT, RAMONA; WILDMANN, NORMAN; GIEZ, ANDREAS; KRASAUSKAS, LUKAS; PREUSSE, PETER; GELDENHUYS, MARKUS; RIESE, MARTIN; WOIWODE, WOLFGANG; FRIEDL-VALLON, FELIX; SINNHUBER, BJÖRN-MARTIN; TORRE, ALEJANDRO DE LA; ALEXANDER, PETER; HORMAECHEA, JOSE LUIS; JANCHES, DIEGO; GARHAMMER, MARKUS; CHAU, JORGE L.; CONTE, J. FEDERICO; HOOR, PETER; ENGEL, ANDREAS
Revista:
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
Editorial:
AMER METEOROLOGICAL SOC
Referencias:
Lugar: Boston; Año: 2021 vol. 102 p. 871 - 893
ISSN:
0003-0007
Resumen:
The southern part of South America and the Antarctic peninsula are known as theworld?s strongest hotspot region of stratospheric gravity wave (GW) activity. Large troposphericwinds are deflected by the Andes and the Antarctic Peninsula and excite GWs that might propagateinto the upper mesosphere. Satellite observations show large stratospheric GW activity abovethe mountains, the Drake Passage, and in a belt centered along 60°S. This scientifically highlyinteresting region for studying GW dynamics was the focus of the Southern Hemisphere Transport,Dynamics, and Chemistry?Gravity Waves (SOUTHTRAC-GW) mission. The German High Altitudeand Long Range Research Aircraft (HALO) was deployed to Rio Grande at the southern tip ofArgentina in September 2019. Seven dedicated research flights with a typical length of 7,000 kmwere conducted to collect GW observations with the novel Airborne Lidar for Middle Atmosphereresearch (ALIMA) instrument and the Gimballed Limb Observer for Radiance Imaging of theAtmosphere (GLORIA) limb sounder. While ALIMA measures temperatures in the altitude rangefrom 20 to 90 km, GLORIA observations allow characterization of temperatures and trace gasmixing ratios from 5 to 15 km. Wave perturbations are derived by subtracting suitable meanprofiles. This paper summarizes the motivations and objectives of the SOUTHTRAC-GW mission.The evolution of the atmospheric conditions is documented including the effect of the extraordinarySouthern Hemisphere sudden stratospheric warming (SSW) that occurred in early September2019. Moreover, outstanding initial results of the GW observation and plans for future work arepresented.