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Empirical STORM-E Model. [I. Theoretical and Observational Basis
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External Online Source: doi:10.1016/j.asr.2012.09.009
Author and Affiliation:
Mertens, Christopher J.(NASA Langley Research Center, Hampton, VA, United States);
Xu, Xiaojing(Science Systems and Applications, Inc., Hampton, VA, United States);
Bilitza, Dieter(George Mason Univ., School of Physics, Astronomy, and Computational Sciences, Fairfax, VA, United States);
Mlynczak, Martin G.(NASA Langley Research Center, Hampton, VA, United States);
Russell, James M., III(Hampton Univ., Center for Atmospheric Sciences, VA, United States)
Abstract: Auroral nighttime infrared emission observed by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument onboard the Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics (TIMED) satellite is used to develop an empirical model of geomagnetic storm enhancements to E-region peak electron densities. The empirical model is called STORM-E and will be incorporated into the 2012 release of the International Reference Ionosphere (IRI). The proxy for characterizing the E-region response to geomagnetic forcing is NO+(v) volume emission rates (VER) derived from the TIMED/SABER 4.3 lm channel limb radiance measurements. The storm-time response of the NO+(v) 4.3 lm VER is sensitive to auroral particle precipitation. A statistical database of storm-time to climatological quiet-time ratios of SABER-observed NO+(v) 4.3 lm VER are fit to widely available geomagnetic indices using the theoretical framework of linear impulse-response theory. The STORM-E model provides a dynamic storm-time correction factor to adjust a known quiescent E-region electron density peak concentration for geomagnetic enhancements due to auroral particle precipitation. Part II of this series describes the explicit development of the empirical storm-time correction factor for E-region peak electron densities, and shows comparisons of E-region electron densities between STORM-E predictions and incoherent scatter radar measurements. In this paper, Part I of the series, the efficacy of using SABER-derived NO+(v) VER as a proxy for the E-region response to solar-geomagnetic disturbances is presented. Furthermore, a detailed description of the algorithms and methodologies used to derive NO+(v) VER from SABER 4.3 lm limb emission measurements is given. Finally, an assessment of key uncertainties in retrieving NO+(v) VER is presented
Publication Date: Feb 01, 2013
Document ID:
20140002434
(Acquired Mar 28, 2014)
Subject Category: METEOROLOGY AND CLIMATOLOGY; EARTH RESOURCES AND REMOTE SENSING
Report/Patent Number: NF1676L-15562
Document Type: Journal Article
Publication Information: Advances in Space Research; Volume 51; No. 4; 554-574
Contract/Grant/Task Num: WBS 389018.02.15.02.94
Financial Sponsor: NASA Langley Research Center; Hampton, VA, United States
Description: 21p; In English; Original contains color and black and white illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution as joint owner in the copyright
NASA Terms: INCOHERENT SCATTER RADAR; INFRARED RADIATION; RADAR MEASUREMENT; ELECTRON DENSITY (CONCENTRATION); MAGNETIC DISTURBANCES; MAGNETIC STORMS; PARTICLE PRECIPITATION; CLIMATOLOGY; RADIOMETERS; E REGION; THERMOSPHERE
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