Jun 13 – 19, 2015
University of Alberta
America/Edmonton timezone
Welcome to the 2015 CAP Congress! / Bienvenue au congrès de l'ACP 2015!

Wind and Gravity Wave Observations with ERWIN-II

Jun 17, 2015, 2:15 PM
CCIS 1-160 (University of Alberta)

CCIS 1-160

University of Alberta

Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition) Atmospheric and Space Physics / Physique atmosphérique et de l'espace (DASP-DPAE) W2-5 Atmospheric physics (DASP) / Physique atmosphérique (DPAE)


Samuel Kristoffersen (University of New Brunswick)


The ERWIN-II (improved E-Region Wind Interferometer) is a Michelson interferometer, located at the Polar Environment Atmospheric Research Laboratory (PEARL) in Eureka, Nu. It measures the airglow irradiance and winds via Doppler shifts in the airglow emissions – green line (557.7 nm) at a height of ~97 km, O2 (560 nm) at ~94 km, and OH (543 nm) at ~87 km. These measurements are made at a very high cadence (~3 minutes) and precision (~1 m/s for green line and OH, and ~4 m/s for O¬); this allows for measurements of both the larger scale phenomena (e.g. tides) and smaller scale phenomena (e.g. gravity waves). Observations of both the tides and gravity waves will be presented. In addition, a study of the correlations between the irradiance and vertical wind, showing a correlation between the irradiance and the height of the airglow layer, will be presented.

Primary author

Samuel Kristoffersen (University of New Brunswick)


Prof. William Ward (University of New Brunswick)

Presentation materials