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Lucien Froidevaux

Photo of Lucien Froidevaux


4800 Oak Grove Drive
M/S 183-701

Pasadena, CA 91109





Member of:

Stratosphere And Upper Troposphere


  • Physics (magna cum laude), UCLA (1976)
  • M.S. in Earth and Planetary Sciences, Caltech (1981)
  • Ph.D. in Earth and Planetary Sciences, Caltech (1984)

Professional Experience

Jet Propulsion Laboratory

  • Principal Scientist, Stratosphere and Upper Troposphere Group
  • Earth Observing System (EOS) Microwave Limb Sounder (MLS) Deputy Principal Investigator - experiment launched in 2004
  • Upper Atmosphere Research Satellite (UARS) MLS co-investigator - experiment launched in 1991
  • National Research Council Resident Research Associate (1983-1985)

Research Interests

  • Variations and trends in the composition of the stratosphere and upper troposphere (e.g., ozone, chlorine, CO)
  • Production of long-term stratospheric data sets from global satellite measurements.
  • Evaluation of global chemistry climate models using satellite-derived data sets.
  • Validation and retrievals of atmospheric composition from satellite measurements.

Selected Awards

  • NASA Group Achievement Awards (Aura and MLS teams) 2005
  • Editor's Citation for Excellence in Refereeing, Journal of Geophysical Research (Atmos.) (2004, 1990)
  • NASA Exceptional Achievement Medal (1997)
  • NASA Group Achievement Award (MLS Data Processing /Analysis Team) (1993)
  • NASA Group Achievement Award (UARS MLS Team) (1992)

Selected Publications

  1. Froidevaux, L., Kinnison, D. E., Santee, M. L., Millán, L. F., Livesey, N. J., Read, W. G., Bardeen, C. G., Orlando, J. J., and Fuller, R. A.: Upper stratospheric ClO and HOCl trends (2005-2020): Aura Microwave Limb Sounder and model results, Atmos. Chem. Phys., 22, 4779-4799,, 2022.
  2. Millán, L., M. L. Santee, A. Lambert, N. J. Livesey, F. Werner, M. J. Schwartz, H. C. Pumphrey, G. L. Manney, Y. Wang, H. Su, L. Wu, W. G. Read, and L. Froidevaux, “The Hunga Tonga-Hunga Ha'apai Hydration of the Stratosphere, Geophys. Res. Lett., doi:10.1029/2022gl099381, 2022.
  3. Santee, M. L., A. Lambert, G. L. Manney, N. J. Livesey, L. Froidevaux, J.L. Neu, M.J. Schwartz, L.F. Millán, F. Werner, W.G. Read, M. Park, R.A. Fuller, and B.M. Ward, “Prolonged and Pervasive Perturbations in the Composition of the Southern Hemisphere Midlatitude Lower Stratosphere From the Australian New Year's Fires,” Geophys. Res. Lett., doi:10.1029/2021gl096270, 2022.
  4. Livesey, N. J., Read, W. G., Froidevaux, L., Lambert, A., Santee, M. L., Schwartz, M. J., Millán, L. F., Jarnot, R. F., Wagner, P. A., Hurst, D. F., Walker, K. A., Sheese, P. E., and Nedoluha, G. E.: Investigation and amelioration of long-term instrumental drifts in water vapor and nitrous oxide measurements from the Aura Microwave Limb Sounder (MLS) and their implications for studies of variability and trends, Atmos. Chem. Phys., 21, 15409–15430,, 2021.
  5. Park, M., Worden, H. M., Kinnison, D. E., Gaubert, B., Tilmes, S., Emmons, L. K., Santee, M. L., Froidevaux, L., and Boone, C. D., Fate of Pollution Emitted During the 2015 Indonesian Fire Season, J. Geophys. Res. (Atm.), doi:10.1029/2020JD033474, 2021.
  6. Szelag, M. E., Sofieva, V. F., Degenstein, D. , Roth, C., Davis, S. , and Froidevaux, L.: Seasonal stratospheric ozone trends over 2000-2018 derived from several merged data sets, Atmos. Chem. Phys., 20, 7035-7047,, 2020.
  7. Ball, W. T., Alsing, J., Staehelin, J., Davis, S. M., Froidevaux, L. , and Peter, T: Stratospheric ozone trends for 1985-2018: sensitivity to recent large variability, Atmos. Chem. Phys., 19, 12731-12748,, 2019.
  8. Froidevaux, L., Kinnison, D. E., Wang, R., Anderson, J., and Fuller, R. A., Evaluation of CESM1 (WACCM) free-running and specified-dynamics atmospheric composition simulations using global multispecies satellite data records, Atmos. Chem. Phys., 19, 4783-4821, doi:10.5194/acp-19-4783-2019, 2019.
  9. Ball, W. T., J. Alsing, D. J. Mortlock, J. Staehelin, J. D. Haigh, T. Peter, F. Tummon, R. Stübi, Andrea Stenke, J. Anderson, A. Bourassa, S. M. Davis, D. Degenstein, S. Frith, L. Froidevaux, C. Roth, V. Sofieva, R. Wang, J. Wild, P. Yu, J. R. Ziemke, and E. V. Rozanov, Evidence for a continuous decline in lower stratospheric ozone offsetting ozone layer recovery, Atmos. Chem. Phys., 18, 1379-1394, doi:10.5194/acp-18-1379-2018, 2018.
  10. Steinbrecht, W., L. Froidevaux, R. Fuller, R. Wang, J. Anderson, C. Roth, A. Bourassa, D. Degenstein, R. Damadeo, J. Zawodny, S. Frith, R. McPeters, P. K. Bhartia, J. Wild, C. Long, S. Davis, K. Rosenlof, V. Sofieva, K. Walker, N. Rahpoe, A. Rozanov, M. Weber, A. Laeng, T. von Clarmann, G. Stiller, N. Kramarova, S. Godin-Beekmann , T. Leblanc, R. Querel, D. Swart, I. Boyd, K. Hocke, N. Kämpfer, E. Maillard Barras, L. Moreira, G. Nedoluha, C. Vigouroux, T. Blumenstock, M. Schneider, O. García, N. Jones, E. Mahieu, D. Smale, M. Kotkamp, J. Robinson, I. Petropavlovskikh, N. Harris, B. Hassler, D. Hubert, and F. Tummon, An update on ozone profile trends for the period 2000 to 2016, Atmos. Chem. Phys., 17, 10675-10690, doi:10.5194/acp-17-10675-2017, ACP, 2018.
  11. Froidevaux, L., Anderson, J., Wang, H.-J., Fuller, R. A., Schwartz, M. J., Santee, M. L., Livesey, N. J., Pumphrey, H. C., Bernath, P., Russell, J. M., and McCormick, M. P., Global OZone Chemistry And Related Datasets for the Stratosphere (GOZCARDS): methodology and sample results with a focus on HCl, H2O, and O3, Atmos. Chem. Phys., 15, 10471–10507, doi:10.5194/acp-15-10471-2015, 2015.
  12. Harris, N. R. P., Hassler, B., Tummon, F., Bodeker, G. E., Hubert, D., Petropavlovskikh, I., Steinbrecht, W., Anderson, J., Bhartia, P. K., Boone, C. D., Bourassa, A., Davis, S. M., Degenstein, D., Delcloo, A., Frith, S. M., Froidevaux, L., Godin-Beekmann, S., Jones, N., Kurylo, M. J., Kyrölä, E., Laine, M., Leblanc, S. T., Lambert, J.-C., Liley, B., Mahieu, E., Maycock, A., de Mazière, M., Parrish, A., Querel, R., Rosenlof, K. H., Roth, C., Sioris, C., Staehelin, J., Stolarski, R. S., Stübi, R., Tamminen, J., Vigouroux, C., Walker, K., Wang, H. J., Wild, J., and Zawodny, J. M.: Past changes in the vertical distribution of ozone – Part 3: Analysis and interpretation of trends, Atmos. Chem. Phys. Discuss., 15, 8565-8608, doi:10.5194/acpd-15-8565-2015, 2015.
  13. Hubert, D., Lambert, J.-C., Verhoelst, T., Granville, J., Keppens, A., Baray, J.-L., Cortesi, U., Degenstein, D. A., Froidevaux, L., Godin-Beekmann, S., Hoppel, K. W., Kyrölä, E., Leblanc, T., Lichtenberg, G., McElroy, C. T., Murtagh, D., Nakane, H., Russell III, J. M., Salvador, J., Smit, H. G. J., Stebel, K., Steinbrecht, W., Strawbridge, K. B., Stübi, R., Swart, D. P. J., Taha, G., Thompson, A. M., Urban, J., van Gijsel, J. A. E., von der Gathen, P., Walker, K. A., Wolfram, E., and Zawodny, J. M.: Ground-based assessment of the bias and long-term stability of fourteen limb and occultation ozone profile data records, Atmos. Meas. Tech. Discuss., 8, 6661-6757, doi:10.5194/amtd-8-6661-2015, 2015.
  14. Nair, P. J., L. Froidevaux, J. Kuttippurath, J. M. Zawodny, J. M. RussellIII, W. Steinbrecht, H. Claude, T. Leblanc, J. A. E.van Gijsel, B. Johnson, D. P. J. Swart, A. Thomas, R. Querel, R. Wang, and J. Anderson (2015), Subtropical and midlatitude ozone trends in the stratosphere: Implications for recovery. J. Geophys. Res. Atmos., 120, 7247–7257. doi: 10.1002/2014JD022371.
  15. Hegglin, M.I., D.A. Plummer, T.G. Shepherd, J.F. Scinocca, J. Anderson, L. Froidevaux, B. Funke, D. Hurst, A. Rozanov, J. Urban, T. von Clarmann, K.A. Walker, H.J. Wang, S. Tegtmeier, and K. Weigel, "Vertical structure of stratospheric water vapour trends derived from merged satellite data," Nature Geoscience 7, doi:10.1038/ngeo2236, 2014.
  16. Mahieu, E., M.P. Chipperfield, J. Notholt, T. Reddmann, J. Anderson, P.F. Bernath, T. Blumenstock, M.T. Coffey, S.S. Dhomse, W. Feng, B. Franco, L. Froidevaux, D. Griffith, J.W. Hannigan, F. Hase, R. Hossaini, N.B. Jones, I. Morino, I. Murata, H. Nakajima, M. Palm, C. Paton-Walsh, J.M. Russell III, M. Schneider, C. Servais, D. Smale, and K.A. Walker, "Recent Northern Hemisphere stratospheric HCl increase due to atmospheric circulation changes," Nature 515, 104-107, doi:10.1038/nature13857, 2014.
  17. Schwartz, M.J., W.J. Read, M.L. Santee, N.J. Livesey, L. Froidevaux, A. Lambert, and G.L. Manney, "Convectively Injected Water Vapor in the North American Summer Lowermost Stratosphere," Geophys. Res. Lett. 40, 10, 2316–2321, doi:10.1002/grl.50421, 2013.
  18. Santee, M.L., S.P. Sander, N.J. Livesey, and L. Froidevaux, "Constraining the chlorine monoxide (ClO) / chlorine peroxide (ClOOCl) equilibrium constant from Aura Microwave Limb Sounder measurements of nighttime ClO," Proc. Nat. Acad. Sci. 107, 15, 6588-6593, doi:10.1073/pnas.0912659107, 2010.
  19. Livesey, N. J., Logan, J. A., Santee, M. L., Waters, J. W., Doherty, R. M., Read, W. G., Froidevaux, L., and Jiang, J. H., Interrelated variations of O3, CO and deep convection in the tropical/subtropical upper troposphere observed by the Aura Microwave Limb Sounder MLS during 2004-2011, Atmos. Chem. Phys., 13, 579-598, doi:10.5194/acp-13-579-2013, 2013.
  20. Tegtmeier, S., Hegglin, M. I., And­erson, J., Bourassa, A., Brohede, S., Degenstein, D.,  Froidevaux, L., Fuller, R., Funke, B., Gille, J., Jones, A., Kasai, Y., Krüger, K., Kyrölä, E.,  Lingenfelser, G., Lumpe, J., Nardi, B., Neu, J., Pendlebury, D., Remsberg, E., Rozanov, A., Smith, L., Toohey, M., Urban, J., von Clarmann, T., Walker, K. A., and Wang, H. J.: The SPARC Data Initiative: A comparison of ozone climatologies from international satellite limb sounders, J. Geophys. Res. Atmos., 118, 12,229–12,247, doi: 10.1002/2013JD019877, 2013.
  21. Manney, G., L., Santee, M. L., Rex, M., Livesey, N. J., Pitts, M. C., Veefkind, P., Nash, R. R., Wohltmann, I., Lehmann, R., Froidevaux, L., Poole, L. R., Schoeberl, M. R., Haffner, D. P., Davies, J., Dorokhov, V., Gernandt, H., Johnson, B., Kivi, R., Kyrölä, E., Larsen, N., Levelt, P. F., Makshtas, A., McElroy, C. T., Nakajima, H., Parrondo, M. C., Tarasick, D. W., von der Gathen, P., Walker, P. K. A., and Zinoviev, N. S.: Unprecedented Arctic ozone loss in 2011, Nature, 478, 469–475, doi:10.1038/nature10556, 2011.
  22. Froidevaux, L., et al., Validation of Aura Microwave Limb Sounder HCl measurements, J. Geophys. Res., 113, D15S25, doi:10.1029/2007JD009025, 2008.
  23. Froidevaux, L., et al., Validation of Aura Microwave Limb Sounder stratospheric ozone measurements, J. Geophys. Res., 113, D15S20, doi:10.1029/2007JD008771, 2008.
  24. Froidevaux, L., Livesey, N.J., Read, W.G., Salawitch, R.J., Waters, J.W., Drouin, B., MacKenzie, I.A., Pumphrey, H.C., Bernath, P., Boone, C., Nassar, R., Montzka, S., Elkins, J., Cunold, D., and Waugh, D., Temporal decrease in upper atmospheric chlorine, Geophys. Res. Lett., 10.1029/2006GL027600, 2006.
  25. Froidevaux, L., Livesey, N.J., Read, W. G., Jiang, Y. B., Jimenez, C., Filipiak, M. J., Schwartz, M. J., Santee, M. L., Pumphrey, H. C., Jiang, J. H., Wu, D. L., Manney, G. L., Drouin, B. J., Waters, J.W., Fetzer, E. J., Bernath, P. F., Boone, C. D.  Walker, K. A., Jucks, K. W., Toon, G.C., Margitan, J.J., Sen, B., Webster, C.R., Christensen, L.E., Elkins, J.W., Atlas, E., Lueb, R. A., and Hendershot, R.,, Early validation analyses of atmospheric profiles from EOS MLS on the Aura satellite, IEEE Transactions on Geoscience and Remote Sensing, Vol. 44, No. 5, May 2006.
  26. Waters, J.W., Froidevaux, L., Harwood, R. S., Jarnot, R. F., Pickett, H. M., Read, W. G., Siegel, P. H., Cofield, R. E., Filipiak, M. J., Flower, D. A., Holden, J. R., Lau, G. K., Livesey, N.J., Manney, G. L., Pumphrey, H. C., Santee, M. L., Wu, D. L., Cuddy, D. T., Lay, R. R., Loo, M. S., Perun, V. S., Schwartz, M. J., Stek, P. C., Thurstans, R. P., Boyles, M. A., Chandra, K. M., Chavez, M. C., Chen, C.-S., Chudasama, B. V., Dodge, R., Fuller, R. A., Girard, M. A., Jiang, J. H., Jiang, Y., Knosp, B. W., LaBelle, R. C., Lam, J. C., Lee, K. A., Miller, D., Oswald, J. E., Patel, N. C., Pukala, D. M., Quintero, O., Scaff, D. M., Van Snyder, W., Tope, M. C., Wagner, P. A., and Walch, M. J., The Earth Observing System Microwave Limb Sounder (EOS MLS) on the Aura satellite, IEEE Transactions on Geoscience and Remote Sensing, Vol. 44, No. 5, May 2006.
  27. Manney, G. L., Santee, M. L., Froidevaux, L., Hoppel, K., Livesey, N.J., and Waters, J.W., EOS MLS observations of ozone loss in the 2004-2005 Arctic winter, Geophys. Res. Lett., 33, L04892,doi:10.1029/2005GL024494, 16 Feb. 2006.
  28. Santee, M. L., Manney, G.L., Livesey, N.J., Froidevaux, L., Pumphrey, H.C, Read, W.G., Schwartz, M.J., and Waters, J.W., Polar processing and development of the 2004 Antarctic ozone hole: First results from Aura MLS, Geophys. Res. Lett., 32, L12817, doi:1029/2005GL022582, 28 June 2005.
  29. Manney, G. L., Froidevaux, L., Santee, M. L., Livesey, N.J., Sabutis, J. L., and Waters, J.W., Variability of ozone loss during Arctic winter (1991 to 2000) estimated from UARS MLS measurements, J. Geophys. Res., 108, 10.1029/2002JD002634, Feb. 2003.
  30. Livesey, N.J., Read, W. G., Froidevaux, L., Waters, J.W., Pumphrey, H. C., Wu, D. L., Santee, M. L., Shippony, Z.,  and Jarnot, R. F., The UARS MLS Version 5 dataset: Theory, characterization and validation, J. Geophys. Res., 108, 10.1029/2002JD002273, 2003.
  31. Froidevaux, L., Waters, J.W., Read, W.G., Connell, P.S., Kinnison, D.E., and J.Russell III, M., Variations in the free chlorine content of the stratosphere (1991-1997): Anthropogenic, volcanic, and methane influences, J. Geophys. Res., 105, 4471-4481, 2000.
  32. Santee, M.L., Manney, G.L., Froidevaux, L., Read, W.G., Waters, J.W., Six years of UARS Microwave Limb Sounder HNO3 observations: Seasonal, interhemispheric, interannual variations in the lower stratosphere, J. Geophys. Res., 104, 8225-8246, 1999.
  33. Siskind, D.E., Froidevaux, L., Russell, J.M., Lean, Implications of upper stratospheric trace constituent changes observed by HALOE for O3 and ClO from 1992 -1995, J. Geophys. Res. Lett., 25, 3513-3516, 1998.
  34. Froidevaux, L., Read, W. G., Lungu, T. A., Cofield, R. E., Fishbein, E.F., Flower, D. A., Jarnot, R. F., Ridenoure, B.P., Shippony, Z., , Waters, J.W., Margitan, J.J., McDermid, I.S., Stachnik, R.A., Peckham, G.E., Braathen, G., Deshler, T., Fishman, J., Hofmann, D.J., and Oltmans, S.J., Validation of UARS MLS ozone measurements, J. Geophys. Res., 101, 10017-10060, 1996.
  35. Froidevaux, L., Waters, J.W., Read, W.G., Elson, L.S., Flower, D.A., and Jarnot, R.F., Global Ozone Observations from UARS MLS: An Overview of Zonal Mean Results, J. Atmos. Sci., Vol. 51, No. 20, 2846-2866, 1994.
  36. Manney, G.L., Froidevaux, L., Waters, J.W., Zurek, R.W., Read, W.G., Elson, L.S., Kumer, J.B., Mergenthaler, J.L., Roche, A.E., O’Neill, A., and Swinbank, R., Chemical Depletion of Lower Stratospheric Ozone in 1992-1993 Northern Winter Vortex, Nature, 370, 429-434, 1994.
  37. Waters, J.W., Froidevaux, L., Read, W.G., Manney, G.L., Elson, L.S., Flower, D.A., Jarnot, R.F., and Harwood, R.S., Stratospheric ClO and Ozone from the Microwave Limb Sounder on the Upper Atmosphere Research Satellite, Nature, 362, 597-602, 1993.
  38. Froidevaux, L., Allen, M., Berman, S., and Daughton, A.,Analysis of LIMS observations in the upper stratosphere and lower mesosphere. I. The mean O3 profile and its temperature sensitivity at mid-latitudes in May, 1979, J. Geophys. Res., 94, 6389-6417, 1989.
  39. Froidevaux, L., Allen, M., and Yung, Y.L., A critical analysis of ClO and O3 in the mid-latitude stratosphere, J. Geophys. Res., 90, 12999-13029, 1985.
  40. Froidevaux, L. and Yung, Y.L., Radiation and chemistry in the stratosphere: Sensitivity to O2 absorption cross sections in the Herzberg continuum, Geophys. Res. Lett., 9, 854-857, 1982.