On the model-data convergence in optical aeronomy (Invited)

Details On the model-data convergence in optical aeronomy (Invited) On the model-data convergence in optical aeronomy (Invited)

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsa13a..06s&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SA13A-06

Physics

[2437] Ionosphere / Ionospheric Dynamics, [2447] Ionosphere / Modeling And Forecasting, [2447] Ionosphere / Modeling And Forecasting, [2736] Magnetospheric Physics / Magnetosphere/Ionosphere Interactions

Scientific paper

At its essence, a first-principles model of atmospheric airglow or aurora takes, as input, a source of free energy and computes, as output, volume production of photons as a function of space (e.g., lat, lon, alt), time, and wavelength. The development of this forward model over the past 80 years must be considered among the most significant triumphs of optical aeronomy. From the observational side, an ideal imaging spectrometer measures a projection, or integral, of this five-dimensional function. Spatial integration is inherent in the observing geometry (a resolution element corresponds to a particular line-of-sight integral), but the instrument designer has a great deal of freedom in choosing how the other dimensions (angular resolution, wavelength, time) are to be resolved. The purpose of this paper is to highlight the emerging synergy between the computational and observational domains of optical aeronomy. Technological developments, such as multi-core processors, electron multiplying CCDs, infrared imaging sensors, tunable filters, and ubiquitous broad-band networking, are pointing toward a convergence, whereby the high-level data product is the real-time estimate of free energy in the magnetosphere-ionosphere-thermosphere system. This model-data convergence (which of course includes non-optical sensors as well) will provide an unprecedented view into the geospace system. Indeed, it is argued that many open questions, traditionally in the domains of solar, magnetospheric, and even atmospheric physics, may ultimately be resolved through collaboration with the aeronomical community.

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