CSUN  Wordmark
Page Description

The following page is a two column layout with a header that contains a quicklinks jump menu and the search CSUN function. Page sections are identified with headers. The footer contains update, contact and emergency information.


Facilities and Programs


Department of Geography
150 Sierra Hall
CSU Northridge
18111 Nordhoff Street
Northridge, CA 91330-8249

Hours: M-F (8:00 a.m. to 5:00 p.m)
Phone: (818) 677-3532
Fax: (818) 677-2723



Dr. Helen Cox Ph.D.


Helen Cox

Contact Information

  • Dr. Helen Cox
  • Office Location: Sierra Hall, Room 130-K
  • Email: helen.m.cox@csun.edu
  • Office Phone: (818) 677-3512


  • PhD, 1998, Atmospheric Sciences, University of California, Los Angeles
  • MS, 1995, Atmospheric Sciences, University of California, Los Angeles
  • MS, 1979, Computer and Information Science, University of Pennsylvania, Philadelphia
  • MA, 1983, Physics, Oxford University, Oxford, England
  • BA, 1978, Physics, Oxford University, Oxford, England

Selected Publications and Presentations

Steele, H. M., A. Eldering, B. Sen, G. C. Toon, F. P. Mills and B. H. Kahn,
"The retrieval of stratospheric aerosol size and composition information from solar infrared transmission spectra" (Applied Optics, 42, 12, 2140-2154, 2003)

Steele, H. M., J. D. Lumpe, R. M. Bevilacqua, K. W. Hoppel and R. P.
Turco, "The role of temperature history in PSC sightings." (J. Geophys. Res.,
107, AAC2- 1 - AAC2-15, 2002)

Eldering, A., F. W. Irion, A. Y. Chang, M. R. Gunson, F. P. Mills and H. M.
Steele, "Vertical profiles of aerosol volume from high-spectral- resolution infrared transmission measurements. I. Methodology", Applied Optics, 40, 18, 3082-3091, 2001.

Steele, H. M., J. Lumpe, R. P. Turco, R. Bevilacqua, and S. T. Massie,
"Retrieval of aerosol surface area and volume densities from extinction measurements: Application to POAM II and SAGE II", J. Geophys. Res., 9325-9336, 1999.

Steele, H. M., K. Drdla, R. P. Turco, J. D. Lumpe, R. M. Bevilacqua, "Tracking polar stratospheric cloud development with POAM II and a microphysical model", Geophys. Res. Lett., 26,287-290, 1999

Research and Interests

  • Atmospheric Research
  • Remote Sensing
  • Retrieval of atmospheric constituents from satellite data
  • Research projects at: Jet Propulsion Laboratory, UCLA University of Alabama, Huntsville Naval Research Laboratory