An empirical model of the extreme ultraviolet solar spectrum as a function of F10.7
作者： Z. Girazian , P. Withers
DOI: 10.1002/2015JA021436
关键词: Computational physics 、 Coronal mass ejection 、 Extreme ultraviolet 、 Solar cycle 、 Physics 、 Solar minimum 、 Solar irradiance 、 Solar maximum 、 Extreme ultraviolet lithography 、 Irradiance 、 Optics
摘要: The F10.7 solar index is frequently used as a proxy for the extreme ultraviolet (EUV) irradiance. However, relationship between and EUV spectrum has not been quantified in great detail Solar Cycles 23 24. We use more than 2800 spectra (2003–2010) from Experiment (SEE) to construct an empirical model of function F10.7P = 12(F10.7+F10.7A) where F10.7A 81 day average. compare our HEUVAC find soft X-ray irradiance ∼65% larger SEE during minimum H Lymann continuum fluxes are ∼30% smaller. derive power law relationships F10.7P ionizing irradiance—the integrated flux within some wavelength band—in units energy (FE) photon (FP) five neutral species show that FE linear FP magnitude its cycle variation dependent. In addition, we ionization frequencies these confirm better F10.7. Finally, investigate hardening consequences Venus, Earth, Mars ionospheres; ratio appropriate Earth's E F layers stayed constant prolonged minimum. Our results can elucidate ionospheric processes such saturation effect.
harvard.edu
sci-hub.se 参考文章(48)
Zachary Girazian, Paul Withers, Bernd Häusler, Martin Pätzold, Silvia Tellmann, Kerstin Peter, Characterization of the lower layer in the dayside Venus ionosphere and comparisons with Mars Planetary and Space Science. ,vol. 117, pp. 146- 158 ,(2015) , 10.1016/J.PSS.2015.06.007
Michael Mendillo, Angela G Marusiak, Paul Withers, David Morgan, Donald Gurnett, None, A new semiempirical model of the peak electron density of the Martian ionosphere Geophysical Research Letters. ,vol. 40, pp. 5361- 5365 ,(2013) , 10.1002/2013GL057631
Thomas N. Woods, Gary J. Rottman, Solar Ultraviolet Variability Over Time Periods of Aeronomic Interest Geophysical monograph. ,vol. 130, pp. 221- 233 ,(2013) , 10.1029/130GM14
Tom Woods, Loren W. Acton, Scott Bailey, Frank Eparvier, Howard Garcia, Darrell Judge, Judith Lean, John T. Mariska, Don McMullin, Gerhard Schmidtke, Stanley C. Solomon, W. Kent Tobiska, Harry P. Warren, Rodney Viereck, Solar Extreme Ultraviolet and X‐Ray Irradiance Variations Geophysical monograph. ,vol. 141, pp. 127- 140 ,(2013) , 10.1029/141GM11
W.Kent Tobiska, Revised solar extreme ultraviolet flux model Journal of Atmospheric and Solar-Terrestrial Physics. ,vol. 53, pp. 1005- 1018 ,(1991) , 10.1016/0021-9169(91)90046-A
L.E. Moore, M. Mendillo, I.C.F. Müller-Wodarg, D.L. Murr, Modeling of global variations and ring shadowing in Saturn's ionosphere Icarus. ,vol. 172, pp. 503- 520 ,(2004) , 10.1016/J.ICARUS.2004.07.007
Jane L. Fox, Katherine E. Yeager, MGS electron density profiles: Analysis of the peak magnitudes Icarus. ,vol. 200, pp. 468- 479 ,(2009) , 10.1016/J.ICARUS.2008.12.002
Thomas N. Woods, Phillip C. Chamberlin, W. K. Peterson, R. R. Meier, Phil G. Richards, Douglas J. Strickland, Gang Lu, Liying Qian, Stanley C. Solomon, B. A. Iijima, A. J. Mannucci, B. T. Tsurutani, XUV Photometer System (XPS): Improved Solar Irradiance Algorithm Using CHIANTI Spectral Models Solar Physics. ,vol. 250, pp. 235- 267 ,(2008) , 10.1007/S11207-008-9196-6
Libo Liu, Yiding Chen, Statistical analysis of solar activity variations of total electron content derived at Jet Propulsion Laboratory from GPS observations Journal of Geophysical Research: Space Physics. ,vol. 114, pp. n/a- n/a ,(2009) , 10.1029/2009JA014533
A. E. Hedin, Correlations between thermospheric density and temperature, solar EUV flux, and 10.7-cm flux variations Journal of Geophysical Research. ,vol. 89, pp. 9828- 9834 ,(1984) , 10.1029/JA089IA11P09828