HR: 0800h
AN: SA31A-1122    [Abstracts]
TI: Multi-layer gravity wave reconstruction from multi-sensor spectroscopic airglow imaging
AU: * Tang, J
EM: jingtang@uiuc.edu
AF: University of Illinois at Urbana-Champaign, 1308 W. Main St, Urbana, IL 61801 United States
AU: Kamalabadi, F
EM: farzadk@uiuc.edu
AF: University of Illinois at Urbana-Champaign, 1308 W. Main St, Urbana, IL 61801 United States
AU: Swenson, G R
EM: swenson1@uiuc.edu
AF: University of Illinois at Urbana-Champaign, 1308 W. Main St, Urbana, IL 61801 United States
AB: The extraction of gravity wave vertical profiles in the airglow layers is critical in studying wave propagation and wave breaking effects on the energy and thermal balance of the mesosphere and lower thermosphere (MLT) region. In this work, multi-sensor airglow imaging is explored in a common-volume observation configuration to reconstruct horizontal/vertical cross-sections of mesospheric wave structures by tomographic inversion. A forward model is constructed mapping the photometric brightness measurements from multiple sensors to height-dependent volume emission rates of relevant spectroscopic processes. Simulations are then performed to quantify the ability to resolve gravity wave structures from multiple airglow layers (OH, Na, O2, and O) at different signal to noise ratios with the goal of designing geometric baseline for imaging systems. The error in the reconstruction is used as a guideline for optimizing modeling of observations needed to recover horizontal/vertical gravity wave structure with different parameters including tilt angle, wavelength, and perturbation strength. Such modeling investigations provide valuable insight toward the optimal design of experiments aimed at resolving gravity wave structures in airglow layers.
DE: 6982 Tomography and imaging
DE: 3334 Middle atmosphere dynamics (0341, 0342)
DE: 3384 Waves and tides
DE: 3394 Instruments and techniques
DE: 0310 Airglow and aurora
SC: SPA-Aeronomy [SA]
MN: 2004 AGU Fall Meeting