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Euv-tec Proxy to Describe Ionospheric Variability Using Satellite-borne Solar Euv Measurements : Volume 10, Issue 22 (19/09/2012)

By Unglaub, C.

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Book Id: WPLBN0003979843
Format Type: PDF Article :
File Size: Pages 5
Reproduction Date: 2015

Title: Euv-tec Proxy to Describe Ionospheric Variability Using Satellite-borne Solar Euv Measurements : Volume 10, Issue 22 (19/09/2012)  
Author: Unglaub, C.
Volume: Vol. 10, Issue 22
Language: English
Subject: Science, Advances, Radio
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2012
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Jacobi, C., Nikutowski, B., Schmidtke, G., Brunner, R., & Unglaub, C. (2012). Euv-tec Proxy to Describe Ionospheric Variability Using Satellite-borne Solar Euv Measurements : Volume 10, Issue 22 (19/09/2012). Retrieved from http://www.ebooklibrary.org/


Description
Description: University of Leipzig, Institute for Meteorology, Stephanstr. 3, 04103 Leipzig, Germany. An updated version of a proxy, termed EUV-TEC, describing the global total primary photoionisation is calculated from satellite-borne EUV measurements assuming a model atmosphere consisting of four major atmospheric constituents. Regional number densities of the background atmosphere are taken from the NRLMSISE-00 climatology. For calculation the Lambert-Beer law is used to describe the decrease of the radiation along their way through the atmosphere. The EUV-TEC proxy thus describes the ionospheric response to solar EUV radiation and its variability. EUV-TEC is compared against the global mean total electron content (TEC), a fundamental ionospheric parameter created from vertical TEC maps derived from GPS data. Strong correlation between these indices is found on different time scales. Results show that the EUV-TEC proxy represents the ionsopheric variability better than the conventional solar index F10.7 does, especially during high and moderate solar activity.

Summary
EUV-TEC proxy to describe ionospheric variability using satellite-borne solar EUV measurements

Excerpt
Aggarwal, M.: TEC variability near northern EIA crest and comparison with IRI model, Adv. Space Res., 48, 1221–1231, 2011.; Emmert, J. T. and Picone, J. M.: Climatology of globally averaged thermospheric mass density, J. Geophys. Res., 115, A09326, doi:10.1029/2010JA015298, 2010.; Chen, Y., Liu, L., and Wan, W.: Does the F10.7 index correctly describe solar EUV flux during the deep solar minimum of 2007–2009?, J. Geophys. Res., 116, A04304, doi:10.1029/2010JA016301, 2011.; Fennelly, J. A. and Torr, D. G.: Photoionization and photoabsorption cross sections of O, N2, O2 and N for aeronomic calculations, Atom. Data Nucl. Data Tables, 51, 321–363, 1992.; Hernandez-Pajares, M., Juan, J. M., Sanz, J., Orus, R., Garcia-Rigo, A., Feltens, J., Komjathy, A., Schaer, S. C., and Krankowski, A.: The IGS VTEC maps: a reliable source of ionospheric information since 1998, J. Geod., 83, 263–275, 2009.; ISO: ISO 21348:2007(E), Space environment (natural and artificial) – Process for determining solar irradiances, ISO, p 12, 2007.; Lean, J. L., Meier, R. R., Picone, J. M., and Emmert J. T.: Ionospheric total electron content: Global and hemispheric climatology, J. Geophys. Res., 116, A10318, doi:10.1029/2011JA016567, 2011.; Liu, L., Chen, Y., Le, H., Kurkin, V. I., Polekh, N. M., and Lee, C.-C.: The ionosphere under extremely prolonged low solar activity, J. Geophys. Res., 116, A04320, doi:10.1029/2010JA016296, 2011.; Lühr, H. and Xiong, C.: IRI-2007 model overestimates electron density during the 23/24 solar minimum, Geophys. Res. Lett., 37, L23101, doi:10.1029/2010GL045430, 2010.; Maruyama, T.: Solar proxies pertaining to empirical ionospheric total electron content models, J. Geophys. Res., 115, A04306, doi:10.1029/2009JA014890, 2010.; Metzger, P. H. and Cook, G. R.: A reinvestigation of the absorption cross sections of molecular oxygen in the 1050–1800 $\mathring\rm A$ region, J. Quant. Spectrosc. Radiat. Transfer, 4, 107–116, 1964.; Nikutowski, B., Brunner, R., Erhardt, Ch., Knecht, St., and Schmidtke, G.: Distinct EUV minimum of the solar irradiance (16–40 nm) observed by SolACES spectrometers onboard the International Space Station (ISS) in August/September 2009, Adv. Space Res., 48, 899–903, 2011.; Picone, J. M., Hedin, A. E., and Drob, D. P.: NRLMSISE-00 empirical model of the atmosphere: statistical comparisons and scientific issues, J. Geophys. Res., 107, 1468, doi:10.1029/2002JA009430, 2002.; Schmidtke, G., Fröhlich, C., and Thuillier, G.: ISS-SOLAR: Total (TSI) and spectral (SSI) irradiance measurements, Adv. Space Res., 37, 255–264, 2006a.; Schmidtke, G., Brunner, R., Eberhard, D., Halford, B., Klocke, U., Knothe, M., Konz, W., Riedel, W.-J., and Wolf, H.: SOL-ACES: Auto-calibrating EUV/UV spectrometers for measurements onboard the International Space Station, Adv. Space Res., 37, 273–282, 2006b.; Unglaub, C., Jacobi, Ch., Schmidtke, G., Nikutowski, B., and Brunner, R.: EUV-TEC proxy to describe ionospheric variability using satellite-borne solar EUV measurements: first results, Adv. Space Res., 47, 1578–1584, 2011.; Woods, T. N.: Recent advances in observations and modeling of the solar ultraviolet and X-ray spectral irradiance, Adv. Space Res., 42, 895–902, 2008.; Woods, T. N., Bailey, S., Eparvier, F., Lawrence, G., Lean, J., McClintock, B., Roble, R., Rottmann, G. J., Solomon, S. C., Tobiska, W. K., and White, O. R.: TIMED Solar EUV Experiment, Phys. Chem. Earth (C), 25, 393–396, 2000.; Woods, T. N., Eparvier, F., Bailey, S., Chamberlin, P., Lean, J., Rottmann, G. J., Solomon, S. C., Tobiska, W. K., and Woodraska, D. L.: Solar EUV Experiment (SEE): Mission overview and first results, J. Geophys. Res., 110, A01312, doi:10.1029/2004JA010765, 2005.

 

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