Follow this link to skip to the main content NASA - National Aeronautics and Space Administration Text and images site Contact NASA

Home

Find it at NASA:


Global Navigation

EARTH SCIENCE DIVISION ATMOSPHERE SCIENCE BIOSPHERIC AIRBORNE SCIENCE OFFICE ESPO ASTL


Banner feature 1

Earth Science Division

Link

Earth Science Division



Choose another category:

Calendar
Org Chart
Staff
Awards
Seminars
Publications
Postdoc Opportunities
Earth Image of the Day




Earth Science Division: Earth Science Directory



SGG: Atmospheric Science Branch Staff

Eric Jensen


MS: 245-4
650-604-4392
Eric.J.Jensen@nasa.gov





Education: Ph.D., Atmospheric Science, 1989

University of Colorado

B.S., Physics, 1985
Harvey Mudd College, Claremont, CA

Research and Professional Experience:
1997-Present NASA-Ames Research Center, Moffett Field, CA
Research Scientist, Atmospheric Science Branch

1996-1997: Bay Area Environmental Research Institute
Research Scientist
1995-1996 San Jose State University
Research Associate
1993-1995 Scripps Institution of Oceanography
Project Scientist
1990-1993 NASA Ames Research Center
NRC Associate

Scholarships and Awards:
 
  • Subsonic Aircraft: Contrail and Cloud Effects Special Study (SUCCESS), 1996, DC-8 flight scientist
 
  • SAGE III Ozone Loss and Validation Experiment (SOLVE), 1999/2000, DC-8 flight scientist
 
  • Florida Area Cirrus Experiment (CRYSTAL-FACE), 2002, project scientist
 
  • Polar Aura Validation Experiment (PAVE), 2005, project scientist
 
  • Water Isotope Intercomparison Flight Series (WIIF), 2005, project scientist
 
  • Costa Rica Aura Validation Experiment (CRAVE), 2006, project scientist

Publications:
Jensen, E. J., and A. S. Ackerman. 2006. Homogeneous aerosol freezing in the tops of high-altitude tropical cumulonimbus clouds. Geophys. Res. Lett., 33, doi:10.1029/2005GL024928.
Smith, J., A. S. Ackerman, E. J. Jensen, and O. B. Toon. 2006. Role of deep convection in establishing the isotopic composition of water vapor in the tropical transition layer. Geophys. Res. Lett., 33, doi:10.1029/2005GL024078.
Jensen, E. J., J. B. Smith, L. Pfister, J. V. Pittman, E. M. Weinstock, D. S. Sayres, R. L. Herman, R. F. Troy, K. Rosenlof, T. L. Thompson, A. M. Fridlind, P. K. Hudson, D. J. Cziczo, A. J. Heymsfield, C. Schmitt, and J. C. Wilson. 2005. Ice Supersaturations Exceeding 100% at the Cold Tropical Tropopause: Implications for Cirrus Formation and Dehydration. Atmos. Chem. Phys., 5: 851–862.
Jensen, E. J., and L. Pfister. 2005. Implications of Persistent Supersaturation with Respect to Ice in Cold Cirrus For Stratospheric Water Vapor. Geophys. Res. Lett., 32, doi:10.1029/2004GL021125.
Jensen, E. J., L. Pfister, T.-P. Bui, A. Weinheimer, E. Weinstock, J. Smith, J. Pittman, D. Baumgardner, and M. J. McGill. 2005. Formation of a Tropopause Cirrus Layer Observed over Florida during CRYSTALFACE. J. Geophys. Res., 110, doi:10.1029/2004JD004671.
Fridlind, A. M., A. S. Ackerman, E. J. Jensen, A. J. Heymsfield, M. R. Poellot, D. E. Stevens, D. Wang, L. M. Miloshevich, D. Baumgardner, R. P. Lawson, J. C. Wilson, R. C. Flagan, J. H. Seinfeld, H. H. Jonsson, T. M. VanReken, V. Varutbangkul, and T. A. Rissman. 2004. Evidence for the predominance of mid-tropospheric aerosols as subtropical anvil cloud nuclei. Science, 34: 718–722.
Jensen, E. J., and L. Pfister. 2004. Transport and freeze-drying in the tropical tropopause layer. J. Geophys. Res., 109, doi:10.1029/2003JD004022.
Jensen, E. J., and K. Drdla. 2002b. Nitric acid concentrations near the tropical tropopause: Implications for the properties of tropical nitric acid trihydrate clouds. Geophys. Res. Lett., 29, doi:10.1029/2002GS015190.
Jensen, E. J., O. B. Toon, A. Tabazadeh, and K. Drdla. 2002a. Impact of Polar Stratospheric Cloud Particle Composition, Number Density, and Lifetime on Denitrification. J. Geophys. Res., 107, doi:1029/2001JD000440.
Santee, M. L., A. Tabazadeh, G. L. Manney, M. D. Fromm, R. M. Bevilacqua, J. W. Waters, and E. J. Jensen. 2002. A Lagrangian approach to studying Arctic polar stratospheric clouds using UARS MLS HNO and POAM II aerosol extinction measurements. J. Geophys. Res., 107, 2000JD000227.
Rapp, M., F.-J. Lubken, A. Mullemann, G. E. Thomas, and E. J. Jensen. 2002. Small-scale temperature variations in the vicinity of NLC: Experimental and model results. J. Geophys. Res., 107, doi:10.1029/2001JD001241.
Pfister, L., H. B. Selkirk, E. Jensen, J. Podolske, G. Sachse, M. Avery, M. R. Schoeberl, M. J. Mahoney, and E. Richard. 2002. Processes controlling water vapor in the winter Arctic tropopause region. J. Geophys. Res., 108, doi:10.1029/2001JD00106717.
Lin, R. F., D. O. Starr, P. J. DeMott, W. Cotton, K. Sassen, E. Jensen, B. Karcher, and X. Liu. 2002. Cirrus Parcel Model Comparison Project. Phase 1: The critical components to simulate cirrus initiation explicitly. J. Atmos. Sci., 59: 2305–2329.
Jensen, E. J., et al. 2001b. Prevalence of ice supersaturated regions in the upper troposphere: Implications for optically thin ice cloud formation. J. Geophys. Res., 106, 17253–17266.
Jensen, E. J., L. Pfister, A. S. Ackerman, O. B. Toon, and A. Tabazadeh. 2001a. A Conceptual Model of the Dehydration of Air Due to Freeze-drying by Optically Thin, Laminar Cirrus Rising Slowly Across the Tropical Tropopause. J. Geophys. Res., 106, 17237–17252.
Pfister, L., H. B. Selkirk, E. J. Jensen, M. R. Schoeberl, O. B. Toon, E. V. Browell, W. B. Grant, B. Gary, M. J. Mahoney, T. V. Bui, and E. Hintsa. 2001. Aircraft observations of thin cirrus clouds near the tropical tropopause. J. Geophys. Res., 106, 9765–9786.
Stone, E. M., A. Tabazadeh, E. Jensen, H. C. Pumphrey, M. L. Santee, and J. L. Mergenthaler. 2001. Onset, extent, and duration of dehydration in the Southern Hemisphere polar vortex. J. Geophys. Res., 106, 22,979–22,990.
Vay, S. A., B. E. Anderson, E. J. Jensen, G. W. Sachse, J. Ovarlez, G. L. Gregory, S. R. Nolf, J. R. Podolske, T. A. Slate, and C. E. Sorenson. 2001. Tropospheric water vapor measurements over the North Atlantic during the Subsonic Assessment Ozone and Nitrogen Oxide Experiment (SONEX), J. Geophys. Res., 105, 3745–3756.
Tabazadeh, A., E. J. Jensen, O. B. Toon, K. Drdla, and M. R. Schoeberl. 2001. Role of the stratospheric polar freezing belt in denitrification. Science, 291, 2591–2594.
Sandor, B. J., E. J. Jensen, E. M. Stone, W. G. Read, J. W. Waters, and J. L. Mergenthaler. 2000. Upper tropospheric humidity and thin cirrus. Geophys. Res. Lett., 27, 2645-2648.
Jensen, E. J., W. G. Read, J. Mergenthaler, B. J. Sandor, L. Pfister, and A. Tabazadeh. 1999. High humidities and subvisible cirrus near the tropical tropopause. Geophys. Res. Lett., 26, 2347.
Tabazadeh, A., O. B. Toon, and E. J. Jensen. 1999. A surface chemistry model for nonreactive trace gas adsorption on ice: Implications for nitric acid scavenging by cirrus. Geophys. Res. Lett., 26, 2211– 2214.
Anderson, B. E., W. R. Cofer, J. Crawford, G. L. Gregory, S. A. Vay, K. E. Brunke, Y. Kondo, M. Koike, H. Schlager, S. L. Baughcum, E. Jensen, Y. Zhao, and K. Kita. 1999. An assessment of aircraft as a source of particles to the upper troposphere, Geophys. Res. Lett., 26, 3069–3072.
Jensen, E. J., O. B. Toon, A. Tabazadeh, G. W. Sachse, B. E. Anderson, K. R. Chan, D. Baumgardner, C. Twohy, B. Gandrud, A. Heymsfield, S. Aulenbach, J. Hallett, and B. L. Gary. 1998d. Ice nucleation processes in upper tropospheric wave-clouds observed during SUCCESS. Geophys. Res. Lett., 25, 1363.
Jensen, E. J., O. B. Toon, R. F. Pueschel, J. Goodman, G. W. Sachse, B. E. Anderson, D. Baumgardner, and R. C. Miake-Lye. 1998c. Ice crystal nucleation and growth in contrails forming at low ambient temperatures. Geophys. Res. Lett., 25, 1371.
Jensen, E. J., A. S. Ackerman, D. E. Stevens, O. B. Toon, and P. Minnis. 1998b. Spreading and growth of contrails in a sheared environment. J. Geophys. Res., 103, 31557–31569
Jensen, E. J., O. B. Toon, S. Kinne, G. W. Sachse, B. E. Anderson, K. R. Chan, C. H. Twohy, B. Gandrud, A. Heymsfield, and R. C. Miake-Lye. 1998a. Environmental conditions required for contrail formation and persistence. J. Geophys. Res., 103, 3929–3936.
Weinheimer, A. J., T. L. Campos, J. G. Walega, F. E. Walega, F. E. Grahek, B. A. Ridley, D. Baumgardner, C. H. Twohy, B. Gandrud, and E. Jensen. 1998. Uptake of NOy on wave cloud ice particles. Geophys. Res. Lett., 25, 1327.
Goodman, J., R. F. Pueschel, E. J. Jensen, S. Verma, G. V. Ferry, S. D. Howard, S. Kinne, and D. Baumgardner. 1998. Shape and size of contrail ice particles. Geophys. Res. Lett., 25, 1327–1330.
Karcher, B., R. Busen, A. Petzold, F. P. Schroder, U. Schumann, and E. J. Jensen. 1998. Physicochemistry of aircraft-generated liquid aerosols, soot, and ice particles, 2, Comparison with observations and sensitivity studies. J. Geophys. Res., 103, 7,129–17,148.
Jensen, E. J., and O. B. Toon. 1997. The potential impact of soot particles from aircraft exhaust on cirrus clouds. Geophys. Res. Lett., 24, 249.
Tabazadeh, A., E. J. Jensen, and O. B. Toon. 1997. A model description for cirrus cloud nucleation from homogeneous freezing of sulfate aerosols. J. Geophys. Res., 102, 23,845–23,850.
Tabazadeh, A., O. B. Toon, and E. J. Jensen. 1997. Formation and implications of ice particle nucleation in the stratosphere. J. Geophys. Res., 102, 23,845–23,850.
Jensen, E. J., O. B. Toon, D. Spinhirne, and H. B. Selkirk. 1996a. On the formation and persistence of subvisible cirrus clouds near the tropical tropopause. J. Geophys. Res., 101, 21361.
Jensen, E. J., O. B. Toon, D. L. Westphal, and S. Kinne. 1994c. Microphysical modeling of cirrus part I: Comparison with 1986 FIRE IFO measurements. J. Geophys. Res., 99, 10421–10442.
Jensen, E. J., O. B. Toon, D. L. Westphal, S. Kinne, and A. Heymsfield. 1994b. Microphysical modeling of cirrus part 2: Sensitivity studies. J. Geophys. Res., 99, 10,443–10,454.
Jensen, E. J., and G. E. Thomas. 1994. Numerical simulations of the effects of gravity waves on noctilucent clouds. J. Geophys. Res., 99, 3421–3430.
Jensen, E. J., and O. B. Toon. 1994. Ice nucleation in the upper troposphere: Sensitivity to aerosol number density, temperature, and cooling rate. Geophys. Res. Lett., 21, 2019–2022.
Jensen, E. J., S. Kinne, and O. B. Toon. 1994a. Tropical cirrus cloud radiative forcing: Sensitivity studies. Geophys. Res. Lett., 21, 2023–2026.
Jacobson, M. Z., R. P. Turco, E. J. Jensen, and O. B. Toon. 1994. Modeling coagulation among particles of different composition and size. Atmos. Env., 28, 1327–1338.
Jensen, E. J., O. B. Toon, and P. Hamill. 1991. Homogeneous freezing nucleation of stratospheric solution droplets. Geophys. Res. Lett., 18, 1857–1860.
Jensen, E. J., and G. E. Thomas. 1991. Charging of mesospheric particles: Implications for electron density and particle coagulation. J. Geophys. Res., 96, 18,603–18,615.
Thomas, G. E., R. D. McPeters, and E. J. Jensen. 1991. Satellite observations of polar mesospheric clouds by the solar backscattered ultraviolet spectral radiometer: Evidence of a solar cycle dependence. J. Geophys. Res., 96, 927–939.
Rusch, D. W., G. E. Thomas, and E. J. Jensen. 1991. Particle size distributions in polar mesospheric clouds derived from solar mesosphere explorer measurements. J. Geophys. Res., 96, 12,933–12,939.
Jensen, E., G. Thomas, and O. B. Toon. 1989. On the diurnal variation of noctilucent clouds. J. Geophys. Res., 94, 14,693–14,702.
Thomas, G. E., J. J. Olivero, E. J. Jensen, W. Schroeder, and O. B. Toon. 1989. Relation between increasing methane and the presence of ice clouds at the mesopause. Nature, 338, 490–492.
Jensen, E., and G. Thomas. 1988. A growth - sedimentation model of polar mesospheric clouds: Comparison with SME measurements. J. Geophys. Res., 93, 2461–2473.
Jensen, E. J., G. E. Thomas, B. B. Balsley. 1988. On the statistical correlation between polar mesospheric cloud occurrences and enhanced mesospheric radar echoes. Geophys. Res. Lett., 15, 315–318.
Jensen, E. J., W. G. Read, J. Mergenthaler, B. J. Sandor, L. Pfister, and A. Tabazadeh. 1999. High humidities and subvisible cirrus near the tropical tropopause. Geophys. Res. Lett., 26, 2347.
Tabazadeh, A., O. B. Toon, and E. J. Jensen. 1999. A surface chemistry model for nonreactive trace gas adsorption on ice: Implications for nitric acid scavenging by cirrus. Geophys. Res. Lett., 26, 2211– 2214.
Anderson, B. E., W. R. Cofer, J. Crawford, G. L. Gregory, S. A. Vay, K. E. Brunke, Y. Kondo, M. Koike, H. Schlager, S. L. Baughcum, E. Jensen, Y. Zhao, and K. Kita. 1999. An assessment of aircraft as a source of particles to the upper troposphere, Geophys. Res. Lett., 26, 3069–3072.
Jensen, E. J., O. B. Toon, A. Tabazadeh, G. W. Sachse, B. E. Anderson, K. R. Chan, D. Baumgardner, C. Twohy, B. Gandrud, A. Heymsfield, S. Aulenbach, J. Hallett, and B. L. Gary. 1998d. Ice nucleation processes in upper tropospheric wave-clouds observed during SUCCESS. Geophys. Res. Lett., 25, 1363.
Jensen, E. J., O. B. Toon, R. F. Pueschel, J. Goodman, G. W. Sachse, B. E. Anderson, D. Baumgardner, and R. C. Miake-Lye. 1998c. Ice crystal nucleation and growth in contrails forming at low ambient temperatures. Geophys. Res. Lett., 25, 1371.
Jensen, E. J., A. S. Ackerman, D. E. Stevens, O. B. Toon, and P. Minnis. 1998b. Spreading and growth of contrails in a sheared environment. J. Geophys. Res., 103, 31557–31569
Jensen, E. J., O. B. Toon, S. Kinne, G. W. Sachse, B. E. Anderson, K. R. Chan, C. H. Twohy, B. Gandrud, A. Heymsfield, and R. C. Miake-Lye. 1998a. Environmental conditions required for contrail formation and persistence. J. Geophys. Res., 103, 3929–3936.
Weinheimer, A. J., T. L. Campos, J. G. Walega, F. E. Walega, F. E. Grahek, B. A. Ridley, D. Baumgardner, C. H. Twohy, B. Gandrud, and E. Jensen. 1998. Uptake of NOy on wave cloud ice particles. Geophys. Res. Lett., 25, 1327.
Goodman, J., R. F. Pueschel, E. J. Jensen, S. Verma, G. V. Ferry, S. D. Howard, S. Kinne, and D. Baumgardner. 1998. Shape and size of contrail ice particles. Geophys. Res. Lett., 25, 1327–1330.
Karcher, B., R. Busen, A. Petzold, F. P. Schroder, U. Schumann, and E. J. Jensen. 1998. Physicochemistry of aircraft-generated liquid aerosols, soot, and ice particles, 2, Comparison with observations and sensitivity studies. J. Geophys. Res., 103, 7,129–17,148.
Jensen, E. J., and O. B. Toon. 1997. The potential impact of soot particles from aircraft exhaust on cirrus clouds. Geophys. Res. Lett., 24, 249.
Tabazadeh, A., E. J. Jensen, and O. B. Toon. 1997. A model description for cirrus cloud nucleation from homogeneous freezing of sulfate aerosols. J. Geophys. Res., 102, 23,845–23,850.
Tabazadeh, A., O. B. Toon, and E. J. Jensen. 1997. Formation and implications of ice particle nucleation in the stratosphere. J. Geophys. Res., 102, 23,845–23,850.
Jensen, E. J., O.B. Toon, L. Pfister, and H. B. Selkirk. 1996b. Dehydration of the upper troposphere and lower stratosphere by subvisible cirrus clouds near the tropical tropopause. Geophys. Res. Lett., 23, 825– 828.
Jensen, E. J., O. B. Toon, D. Spinhirne, and H. B. Selkirk. 1996a. On the formation and persistence of subvisible cirrus clouds near the tropical tropopause. J. Geophys. Res., 101, 21361.
Jensen, E. J., O. B. Toon, D. L. Westphal, and S. Kinne. 1994c. Microphysical modeling of cirrus part I: Comparison with 1986 FIRE IFO measurements. J. Geophys. Res., 99, 10421–10442.
Jensen, E. J., O. B. Toon, D. L. Westphal, S. Kinne, and A. Heymsfield. 1994b. Microphysical modeling of cirrus part 2: Sensitivity studies. J. Geophys. Res., 99, 10,443–10,454.
Jensen, E. J., and G. E. Thomas. 1994. Numerical simulations of the effects of gravity waves on noctilucent clouds. J. Geophys. Res., 99, 3421–3430.
Jensen, E. J., and O. B. Toon. 1994. Ice nucleation in the upper troposphere: Sensitivity to aerosol number density, temperature, and cooling rate. Geophys. Res. Lett., 21, 2019–2022.
Jensen, E. J., S. Kinne, and O. B. Toon. 1994a. Tropical cirrus cloud radiative forcing: Sensitivity studies. Geophys. Res. Lett., 21, 2023–2026.
Jacobson, M. Z., R. P. Turco, E. J. Jensen, and O. B. Toon. 1994. Modeling coagulation among particles of different composition and size. Atmos. Env., 28, 1327–1338.
Jensen, E. J. and O. B. Toon. 1992. The potential effects of volcanic aerosols on cirrus cloud microphysics. Geophys. Res. Lett., 19, 1759–1762.
Jensen, E. J., O. B. Toon, and P. Hamill. 1991. Homogeneous freezing nucleation of stratospheric solution droplets. Geophys. Res. Lett., 18, 1857–1860.
Jensen, E. J., and G. E. Thomas. 1991. Charging of mesospheric particles: Implications for electron density and particle coagulation. J. Geophys. Res., 96, 18,603–18,615.
Thomas, G. E., R. D. McPeters, and E. J. Jensen. 1991. Satellite observations of polar mesospheric clouds by the solar backscattered ultraviolet spectral radiometer: Evidence of a solar cycle dependence. J. Geophys. Res., 96, 927–939.
Rusch, D. W., G. E. Thomas, and E. J. Jensen. 1991. Particle size distributions in polar mesospheric clouds derived from solar mesosphere explorer measurements. J. Geophys. Res., 96, 12,933–12,939.
Jensen, E., G. Thomas, and O. B. Toon. 1989. On the diurnal variation of noctilucent clouds. J. Geophys. Res., 94, 14,693–14,702.
Thomas, G. E., J. J. Olivero, E. J. Jensen, W. Schroeder, and O. B. Toon. 1989. Relation between increasing methane and the presence of ice clouds at the mesopause. Nature, 338, 490–492.
Jensen, E., and G. Thomas. 1988. A growth - sedimentation model of polar mesospheric clouds: Comparison with SME measurements. J. Geophys. Res., 93, 2461–2473.
Jensen, E. J., G. E. Thomas, B. B. Balsley. 1988. On the statistical correlation between polar mesospheric cloud occurrences and enhanced mesospheric radar echoes. Geophys. Res. Lett., 15, 315–318.






FirstGov - Your First Click to the US Government
+ Freedom of Information Act
+ Budgets, Strategic Plans and Accountability Reports
+ The President's Management Agenda
+ NASA Privacy Statement, Disclaimer,
Spacerand Accessibility Certification

+ Inspector General Hotline
+ Equal Employment Opportunity Data Posted Pursuant to the No Fear Act
+ Information-Dissemination Priorities and Inventories

NASA - National Aeronautics and Space Administration

Webmaster: Dennis Gonzales
NASA Official: Steve Hipskind
Last Updated: August 23, 2006
+ Contact NASA
Spacer