World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Image-model Coupling: Application to an Ionospheric Storm : Volume 17, Issue 4 (20/08/2010)

By Smith, N. D.

Click here to view

Book Id: WPLBN0003980394
Format Type: PDF Article :
File Size: Pages 9
Reproduction Date: 2015

Title: Image-model Coupling: Application to an Ionospheric Storm : Volume 17, Issue 4 (20/08/2010)  
Author: Smith, N. D.
Volume: Vol. 17, Issue 4
Language: English
Subject: Science, Nonlinear, Processes
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2010
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Mitchell, C. N., Pokhotelov, D., Budd, C. J., & Smith, N. D. (2010). Image-model Coupling: Application to an Ionospheric Storm : Volume 17, Issue 4 (20/08/2010). Retrieved from http://hawaiilibrary.net/


Description
Description: Department of Mathematical Sciences, University of Bath, Bath, BA2 7AY, UK. Techniques such as tomographic reconstruction may be used to provide images of electron content in the ionosphere. Models are also available which attempt to describe the dominant physical processes operating in the ionosphere, or the statistical relationships between ionospheric variables. It is sensible to try and couple model output to tomographic images with the aim of inferring the values of driver variables which best replicate some description of electron content imaged in the ionosphere, according to some criterion. This is a challenging task. The following describes an attempt to couple an ionospheric model to a tomographic reconstruction of the geomagnetic storm of 20 November 2003, along a latitudal line segment above north America. A simple model was chosen to reduce the number of input drivers that were varied. The investigation illustrates some of the issues involved in image-model coupling. The ability to make scientific deductions depends on the accuracy of the assumptions in the ionospheric model and the accuracy of the tomographic reconstruction. An ensemble technique was used to help assess confidence in the reconstruction.

Summary
Image-model coupling: application to an ionospheric storm

Excerpt
Bhuyan, K. and Bhuyan, P.: International Reference Ionosphere as a potential regularization profile for computerized ionospheric tomography, Adv. Space Res., 39, 851–858, 2007.; Bilitza, D.: International Reference Ionosphere – Status 1995/96, Adv. Space Res., 20, 1751–1754, 1997.; Bust, G. and Mitchell, C.: History, current state, and future directions of ionospheric imaging, Rev. Geophys., 46, RG1003, doi:10.1029/2006RG000212, 2008.; Dow, J., Neilan, R., and Rizos, C.: The International GNSS Service in a changing landscape of Global Navigation Satellite Systems, J. Geodesy, 83, 191–198, 2009.; Dear, R. and Mitchell, C.: GPS interfrequency biases and total electron content errors in ionospheric imaging over Europe, Radio Sci., 41, RS6007, doi:10.1029/2005RS003269, 2006.; Duda, R., Hart, P., and Stork, D.: Pattern Classification, 2nd edn., A Wiley-Interscience Publication, John Wiley & Sons, Inc., New York, 2001.; Foster, J., Coster, A., Erickson, P., Rideout, W., Rich, F., Immel, T., and Sandel, B.: Redistribution of the Stormtime Ionosphere and the Formation of a Plasmaspheric Bulge, in: Inner Magnetosphere Interactions: New Perspectives from Imaging, edited by: Burch, J., Schulz, M., and Spence, H., American Geophysical Union, Washington, DC, Geoph. Monog. Series, 159, 277–289, 2005.; Hargreaves, J.: The solar-terrestrial environment, in: Cambridge atmospheric and space science series, Cambridge University Press, Cambridge, 2003.; Huba, J., Joyce, G., and Fedder, J.: Sami2 is Another Model of the Ionosphere (SAMI2): A new low-latitude ionosphere model, J. Geophys. Res., 105, 23035–23053, 2000.; %IGS website ref.: International GNSS Service, http://igscb.jpl.nasa.gov.; Spencer, P. and Mitchell, C.: Imaging of fast moving electron-density structures in the polar cap, Ann. Geophys.-Italy, 50, 427–434, 2007.; %The MathWorks: http://www.mathworks.com, access: November 2009.; Jee, G., Schunk, R., and Scherliess, L.: On the sensitivity of total electron content (TEC) to upper atmospheric/ionospheric parameters, J. Atmos. Sol.-Terr. Phy., 67, 1040–1052, doi: 10.1016/j.jastp.2005.04.001, 2005.; Korn, G. and Korn, T.: Mathematical Handbook for Scientists and Engineers: Definitions, Theorems, and Formulas for Reference and Review, 2nd, enlarged and revised edn., McGraw-Hill, Inc., New York, 1968.; Mannucci, A., Tsurutani, B., Iijima, B., Komjathy, A., Wilson, B., Pi, X., Sparks, L., Hajj, G., Mandrake, L., Gonzalez, W., Kozyra, J., Yumoto, K., Swisdak, M., Huba, J., and Skoug, R.: Hemispheric Daytime Ionospheric Response To Intense Solar Wind Forcing, in: Inner Magnetosphere Interactions: New Perspectives from Imaging, edited by: Burch, J., Schulz, M., and Spence, H., American Geophysical Union, Washington, DC, Geoph. Monog. Series, 159, 261–275, 2005.; Mitchell, C. and Spencer, P.: A three-dimensional time-dependent algorithm for ionospheric imaging using GPS, Ann. Geophys.-Italy, 46, 687–696, 2003.; OMNIWeb: Space Physics Data Facility, NASA/Goddard Space Flight Center, available at: http://omniweb.gsfc.nasa.gov, last access: July 2010.; Powell, M.: A view of algorithms for optimization without derivatives, Mathematics TODAY, 43, 170–174, 2007.; Pryse, S., Kersley, L., Mitchell, C., Spencer, P., and Williams, M.: A comparison of reconstruction techniques used in ionospheric tomography, Radio Sci., 33, 1767–1779, 1998.; SAMI2: The SAMI2 Open Source Project, Naval Research Laboratory, available at: http://wwwppd.nrl.navy.mil/sami2-OSP/index.html, last access: November 2007.; %SOPAC website ref.: Scripps Orbit and Permanent Array Center (SOPAC), %http://sopac.ucsd.edu.; SAMI3: NRL Ionosphere Model: SAMI3, available at: http://www.nrl.navy.mil/content.php?P=04REVIEW105, last access: September 2008.; Smith, N. D., Mitch

 

Click To View

Additional Books


  • An Artificial Neural Network Technique f... (by )
  • A Delay Differential Model of Enso Varia... (by )
  • Cyclostrophic Vortices in Polar Regions ... (by )
  • Contraction of Westward-travelling Nonlo... (by )
  • Singular Value Decomposition (Svd) for E... (by )
  • A Two-fluid Model Describing the Finite-... (by )
  • Path-integrated Lagrangian Measures from... (by )
  • Unstable Periodic Orbits and Attractor o... (by )
  • Implications of Model Error for Numerica... (by )
  • On the Problem of Optimal Approximation ... (by )
  • Sequence of Eruptive Events in the Vesuv... (by )
  • Relativistic Surfatron Process for Landa... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from Hawaii eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.