April, 1998

CURRICULUM VITAE

NAME: John A. Ogren
BORN: 30 September 1952, Troy, New York, USA
CITIZENSHIP: USA

EDUCATIONAL HISTORY:
1975 BS Harvey Mudd College Engineering
1975 ME Harvey Mudd College Engineering
                (Thesis: The contribution of the stratosphere to ozone levels in the Los Angeles basin)
1983 PhD University of Washington Civil Engineering
                (Dissertation: Elemental carbon in the atmosphere)

AWARDS AND HONORS:
1974-1975 Henry T. Mudd Fellowship
1975 Graduation with distinction and departmental honors
1977-1980 National Science Foundation Graduate Fellowship
1981 Valle Scandinavian Exchange Program Scholarship

RELATED WORK EXPERIENCE:
1975-1977 Research Engineer, Meteorology Research, Inc., Altadena, California
1978-1982 Research Assistant, Civil Engineering, University of Washington, Seattle, Washington
1983-1985 Research Associate, Department of Meteorology, University of Stockholm, Sweden
1985-1989 Research Assistant Professor (oavlönad docent), Department of Meteorology, University of Stockholm, Sweden
1989-1991 Associate Professor (högskolelektor), Department of Meteorology, University of Stockholm, Sweden
1991- Physical Scientist, National Oceanic and Atmospheric Administration, Climate Monitoring and Diagnostics Laboratory, Boulder, Colorado
1994- Affiliate Faculty, Department of Atmospheric Sciences, Colorado State University, Ft. Collins, Colorado

PUBLICATIONS:

  1. D. L. Blumenthal, J. A. Ogren and J. A. Anderson, "Airborne Sampling System for Plume Monitoring", Atmos. Environ. 12, 613-620, 1978.
  2. J. A. Ogren, "On the Operation of the Electrical Aerosol Analyzer at Reduced Pressures", J. Aerosol Sci. 11, 427, 1980.
  3. J. A. Ogren, N. C. Ahlquist, A. D. Clarke and R. J. Charlson, "Measurements of the Absorption Coefficient of Stratospheric Aerosols", Geophys. Res. Lett. 8, 9-12, 1981.
  4. J. A. Ogren, R. J. Charlson, L. F. Radke and S. K. Domonkos, "Absorption of Visible Radiation by Aerosols in the Volcanic Plume of Mount St. Helens", Science 211, 834-836, 1981.
  5. T. C. Grenfell, D. K. Perovich and J. A. Ogren, "Spectral Albedos of an Alpine Snowpack", Cold Regions Sci. Tech. 4, 121-127, 1981.
  6. J. A. Ogren, "Deposition of Particulate Elemental Carbon from the Atmosphere", in Particulate Carbon: Atmospheric Life Cycle, edited by G. T. Wolff and R. L. Klimisch, Plenum Press, New York, 1982.
  7. R. J. Charlson and J. A. Ogren, "The Atmospheric Cycle of Elemental Carbon", in Particulate Carbon: Atmospheric Life Cycle, edited by G. T. Wolff and R. L. Klimisch, Plenum Press, New York, 1982.
  8. J. A. Ogren and R. J. Charlson, "Elemental Carbon in the Atmosphere: Cycle and Lifetime", Tellus 35B, 241-254, 1983.
  9. R. A. Duce, V. A. Mohnen, P. R. Zimmerman, D. Grosjean, W. Cautreels, R. Chatfield, R. Jaenicke, J. A. Ogren, E. D. Pellizzari, and G. T. Wallace, "Organic Material in the Global Troposphere", Rev. Geophys. Space Phys. 21, 921-952, 1983.
  10. J. D. Edwards, J. A. Ogren, R. E. Weiss, and R. J. Charlson, "Particulate Air Pollutants: A Comparison of British 'Smoke' with Optical Absorption Coefficient and Elemental Carbon Concentration", Atmos. Environ. 17, 2337-2341, 1983.
  11. D. Clarke, R. J. Charlson, and J. A. Ogren, "Stratospheric Aerosol Light Absorption before and after El Chichon", Geophys. Res. Lett. 10, 1017-1020, 1983.
  12. J. A. Ogren, R. J. Charlson, and P. J. Groblicki, "Determination of Elemental Carbon in Rainwater", Anal. Chem. 55, 1569-1572, 1983.
  13. J. A. Ogren, P. J. Groblicki, and R. J. Charlson, "Measurement of the Removal Rate of Elemental Carbon from the Atmosphere", Sci. Total Environ. 36, 329-338, 1984.
  14. J. A. Ogren and R. J. Charlson, "Wet Deposition of Elemental Carbon and Sulfate in Sweden", Tellus 36B, 262-271, 1984.
  15. J. A. Ogren, J. Heintzenberg, and R. J. Charlson, "In-situ Sampling of Clouds with a Droplet to Aerosol Converter", Geophys. Res. Lett. 12, 121-124, 1985.
  16. J. Heintzenberg and J. Ogren, "On the Operation of the TSI-3020 Condensation Nuclei Counter at Altitudes up to 10 km", Atmos. Environ. 19, 1385-1387, 1985.
  17. J. Heintzenberg, H.-C. Hansson, J. A. Ogren, and S.-Å. Odh, "Concept and Realization of an Air Pollution Monitoring Station in the European Arctic", Ambio 14, 152-157, 1985.
  18. J. A. Ogren and H. Rodhe, "Measurements of the Chemical Composition of Cloudwater at a Clean Air Site in Central Scandinavia", Tellus 38B, 190-196, 1986.
  19. H.-C. Hansson, B. G. Martinsson, E. Swietlicki, L. Asking, J. Heintzenberg, and J. A. Ogren, "PIXE in Complex Analytical Systems for Atmospheric Chemistry", Nuclear Instruments and Methods in Physics Research 22B, 235-240, 1987.
  20. K. J. Noone, R. J. Charlson, D. S. Covert, J. A. Ogren, and J. Heintzenberg, "Cloud Droplets: Solute Concentration is Size Dependent," J. Geophys. Res. 93, 9477-9482, 1988.
  21. K. J. Noone, R. J. Charlson, D. S. Covert, J. A. Ogren, and J. Heintzenberg, "Design and Calibration of a Counterflow Virtual Impactor for Sampling of Atmospheric Fog and Cloud Droplets", Aerosol Sci. Tech. 8, 235-244, 1988.
  22. J. A. Ogren, J. Heintzenberg, A. Zuber, K. J. Noone, and R. J. Charlson, "Measurements of the Size-Dependence of Solute Concentrations in Cloud Droplets", Tellus 41B, 24-31, 1989.
  23. J. Heintzenberg, J. A. Ogren, K.J. Noone, and L. Gärdneus, "The Size Distribution of Submicrometer Particles within and about Stratocumulus Cloud Droplets on Mt. Åreskutan, Sweden", Atmos. Res. 24, 89-101, 1989.
  24. K.J. Noone, J.A. Ogren, and J. Heintzenberg. "An Examination of Clouds at a Mountain-top Site in Central Sweden: The Distribution of Solute Within Cloud Droplets", Atmos. Res. 25, 3-15, 1990.
  25. J. Heintzenberg, J. Ström, J.A. Ogren, and H.-P. Fimpel. Vertical profiles of aerosol properties in the summer troposphere of the European Arctic. Atmos. Environ. 25A, 621-627, 1991.
  26. K.J. Noone, J.A. Ogren, K.B. Noone, A. Hallberg, S. Fuzzi, and J.A. Lind. Measurements of the partitioning of hydrogen peroxide in a stratiform cloud. Tellus 43B, 280-290, 1991.
  27. Bodhaine, B. A., Harris, J. M., Ogren, J. A. and Hofmann, D. J. 1992. Aerosol optical properties at MLO: Long-range transport from Kuwait? Geophys. Res. Lett. 19, 581-584.
  28. Ogren, J. A., and Charlson, R. J. 1992. Implications for models and measurements of chemical inhomogeneities among cloud droplets. Tellus 44B, 208-225.
  29. Hallberg, A., Ogren, J.A., Noone, K.J., Heintzenberg, J., Berner, A., Solly, I., Kruisz, C., Reischl, G., Fuzzi, S., Facchini, M.C., Hansson, H-C., Wiedensohler, A., and Svenningsson, I.B. 1992. Phase partitioning for different aerosol species in fog. Tellus 44B, 545-555.
  30. Noone, K. J., Ogren, J. A., Hallberg, A., Heintzenberg, J., Ström, J., Hansson, H.-C., Svenningsson, I. B., Wiedensohler, A., Fuzzi, S., Facchini, M. C., Arends, B. G. and Berner, A. 1992. Changes in aerosol size- and phase distributions due to physical and chemical processes in fog. Tellus 44B, 489-504.
  31. Noone, K. J., Ogren, J. A., Hallberg, A., Hansson, H.-C., Wiedensohler, A. and Swietlicki, E. 1992. A statistical examination of the chemical speciation between interstitial and scavenged aerosol. Tellus 44B, 581-592.
  32. Ogren, J. A., Noone, K. J. Hallberg, A., Heintzenberg, J., Schell, D., Berner, A., Solly, I., Kruisz, C., Reischl, G., Arends, B. G. and Wobrock, W. 1992. Measurements of the size dependence of the concentration of non-volatile material in fog droplets. Tellus 44B, 570-580.
  33. Facchini, M. C., Fuzzi, S., Kessel, M., Wobrock, W., Jaeschke, W., Arends, B. G., Möls, J. J., Berner, A., Solly, I., Kruisz, C., Reischl, G., Pahl, S., Hallberg, A., Ogren, J. A., Fierlinger-Oberlinninger, H., Marzorati, A. and Schell, D. 1992. The chemistry of sulfur and nitrogen species in a fog system: A multiphase approach. Tellus 44B, 505-521.
  34. Fuzzi, S., Facchini, M. C., Orsi, G., Lind, J. A., Wobrock, W., Kellel, M., Maser, R., Jaeschke, W., Enderle, K. H., Arends, B. G., Berner, A., Solly, I., Kruisz, C., Reischl, G., Pahl, S., Kaminski, U., Winkler, P., Ogren, J. A., Noone, K. J., Hallberg, A., Fierlinger-Oberlinninger, H., Puxbaum, H., Marzorati, A., Hansson, H.-C., Wiedensohler, A., Svenningsson, I. B., Martinsson, B. G., Schell, D. and Georgii, H. W. 1992. The Po valley fog experiment 1989: An overview. Tellus 44B, 448-468.
  35. Martinsson, B. G., Swietlicki, E., Hansson, H.-C., Wiedensohler, A., Noone, K. J., Ogren, J. A. and Hallberg, A. 1992. Elemental composition of cloud interstitial particle size fractions and hydrophobic fractions compared with cloud droplet residuals. Tellus 44B, 593-603.
  36. Svenningsson, I. B., Hansson, H.-C., Wiedensohler, A., Ogren, J. A., Noone, K. J. and Hallberg, A. 1992. Hygroscopic growth of aerosol particles in the Po Valley. Tellus 44B, 556-569.
  37. Noone, K. B., Noone, K. J., Heintzenberg, J., Ström, J., and Ogren, J. A. 1993. In-situ observations of cirrus cloud microphysical properties using the counterflow virtual impactor. J. Atmos. Oceanic. Tech. 10, 294-303.
  38. Ström, J., Heintzenberg, J., Noone, K.J., Noone, K.B., Ogren, J.A., Albers, F. and Quante, M. 1994. Small crystals in cirriform clouds: A case study of residue size distribution, cloud water content and related cloud properties. J. Atmos. Res. 32, 125-141.
  39. Penner, J.E., Charlson, R.J., Hales, J.M., Laulainen, N., Leifer, R., Novakov, T., Ogren, J., Radke, L.F., Schwartz, S.E. and Travis, L. 1994. Quantifying and minimizing uncertainty of climate forcing by anthropogenic aerosols. Bull. Amer. Meteor. Soc. 75, 375.
  40. Wobrock, W., Schell, D., Maser, R., Jaeschke, W., Georgii, H.W., Wieprecht, W., Arends, B.G., Möls, H.J., Kos, G.P.A., Fuzzi, S., Facchini, M.C., Orsi, G., Berner, A., Solly, I., Kruisz, C., Svenningsson, I.B., Wiedensohler, A., Hansson, H.-C., Ogren, J.A., Noone, K.J., Hallberg, A., Pahl, S., Schneider, T., Winkler, P., Winiwarter, W., Colvile, R.N., Choularton, T.W., Flossmann, A.I., and Borrmann, S. 1994. The Kleiner Feldberg cloud experiment 1990: An overview, J. Atmos. Chem. 19, 3-35.
  41. Arends, B.G., Kos, G.P.A., Maser, R., Schell, D., Wobrock, W., Winkler, P., Ogren, J.A., Noone, K.J., Hallberg, A., Svenningsson, I.B., Wiedensohler, A., Hansson, H.-C., Berner, A., Solly, I., and Kruisz, C. 1994. Microphysics of clouds at Kleiner Feldberg. J. Atmos. Chem. 19, 59-85.
  42. Hallberg, A., Noone, K.J., Ogren, J.A., Svenningsson, I.B., Flossmann, A., Wiedensohler, A., Hansson, H.-C., Heintzenberg, J., Anderson, T.L., Arends, B. and Maser, R. 1994. Phase partitioning of aerosol particles in clouds at Kleiner Feldberg. J. Atmos. Chem. 19, 107-127.
  43. Svenningsson, B., Hansson, H.-C., Wiedensohler, A., Noone, K., Ogren, J., Hallberg, A., and Colville, R. 1994. Hygroscopic growth of aerosol particles and its influence on nucleation scavenging in cloud: Experimental results from Kleiner Feldberg. J. Atmos. Chem. 19, 129-152.
  44. Hallberg, A., Ogren, J.A., Noone, K.J., Okada, K., Heintzenberg, J., and Svenningsson, I.B. 1994. The influence of aerosol particle composition on cloud droplet formation, J. Atmos. Chem. 19, 153-171.
  45. Colvile, R.N., Sander, R., Choularton, T.W., Bower, K.N., Inglis, D.W.F., Wobrock, W., Maser, R., Schell, D., Svenningsson, I.B., Wiedensohler, A., Hansson, H.-C., Hallberg, A., Ogren, J.A., Noone, K.J., Facchini, M.C., Fuzzi, S., Orsi, G., Arends, B.G., Winiwarter, W., Schneider, T., and Berner, A. 1994. Computer modelling of clouds at Kleiner Feldberg, J. Atmos. Chem. 19, 189-229.
  46. Ogren, J.A. 1995. A systematic approach to in situ observations of aerosol properties. In Aerosol Forcing of Climate, edited by R.J. Charlson and J. Heintzenberg, John Wiley & Sons, Ltd., 215-226.
  47. Schwartz, S.E., Arnold, F., Blanchet, J.-P., Durkee, P.A., Hofmann, D.J., Hoppel, W.A., King, M.D., Lacis, A.A., Nakajima, T., Ogren, J.A., Toon, O.B., and Wendisch, M. 1995. Group Report: Connections between aerosol properties and forcing of climate. In Aerosol Forcing of Climate, edited by R.J. Charlson and J. Heintzenberg, John Wiley & Sons, Ltd., 251-280.
  48. Clarke, A., Ogren, J., and Charlson, R. 1996. Comment on "Measurement of aerosol absorption coefficient from teflon filters uing the integrating plate and integrating sphere techiques" by D. Campbell, S. Copeland, and T. Cahill. Aerosol Sci. Tech. 24, 221-224.
  49. Wang, T., Carroll, M.A., Albercook, G.M., Owens, K.R., Duderstadt, K.A., Markevitch, A.N., Parrish, D.D., Holloway, J.S., Fehsenfeld, F.C., Forbes, G., and Ogren, J.A. 1996. Ground-based measurements of NOx and total reactive oxidized nitrogen (NOy) at Sable Island, Nova Scotia during the NARE 1993 summer intensive. J. Geophys. Res. 101, 28,991-29,004.
  50. Anderson, T.L., Covert, D.S., Marshall, S.F., Laucks, M.L., Charlson, R.J., Waggoner, A.P., Ogren, J.A., Caldow, R., Holm, R.L., Quant, F.R., Sem, G.J., Wiedensohler, A., Ahlquist, N.A., and Bates, T.S. 1996. Performance characteristics of a high-sensitivity, three-wavelength, total scatter/backscatter nephelometer. J. Atmos. Oceanic Tech. 13, 967-986.
  51. Gonzalez Jorge, H. and Ogren, J.A. 1996. Sensitivity of retrieved aerosol properties to assumptions in the inversion of spectral optical depths. J. Atmos. Sci. 53, 3669-3683.
  52. Bergin, M.H., Ogren, J.A., Schwartz, S.E., and McInnes, L.M. 1997. Evaporation of ammonium nitrate aerosol in a heated nephelometer: Implications for field measurements. Environ. Sci. Tech. 31, 2878-2883.
  53. Hallberg, A., Noone, K.J. and Ogren, J.A. 1998. Aerosol particles and clouds: Which particles form cloud droplets? Tellus 50B, 59-75.
  54. McInnes, L.M., Bergin, M.H., Ogren, J.A., and Schwartz, S.E. 1998. Apportionment of light scattering and hygroscopic growth to aerosol composition. Geophys. Res. Lett. 25, 513-516.
  55. Meszaros, E., Molnar, A., and Ogren, J. 1998. Scattering and absorption properties of fine atmospheric aerosol particles under regional conditions in Hungary, J. Aerosol Sci., in press.
  56. Anderson, T.L and Ogren, J.A. 1998. Optimal determination of aerosol radiative properties using the TSI 3563 nephelometer. Aerosol Sci. Tech., in press.
  57. Carrico, C.M., Rood, M.J., and Ogren, J.A. 1998. Aerosol light scattering properties at Cape Grim, Tasmania, during ACE-1. J. Geophys. Res., in press.

PATENTS:

1. J.A. Ogren, J. Heintzenberg, and R.J. Charlson, "Virtual Impactor", U.S. Patent No. 4,689,052, 1987.

NOTES, REPORTS, CONFERENCE PAPERS, REVIEWS AND SUBMITTED PAPERS:

1. J. A. Anderson and J. A. Ogren, "Data Processing Techniques for Accuracy of Aircraft Sampling", Proceedings of the Air Pollution Control Association Specialty Conference on Air Pollution Measurement Accuracy as it Relates to Regulation Compliance, New Orleans, 26-28 October, 1975.
2. J. A. Ogren, D. L. Blumenthal and W. H. White, "Study of Ozone Formation in Power Plant Plumes", Proceedings of the Air Pollution Control Association Specialty Conference on Ozone/Oxidants: Interactions with the Total Environment, Dallas, 10-12 March 1976.

3. J. A. Ogren and T. B. Smith, "Airborne Sulfate Measurements in the Vicinity of the Mohave Power Plant", MRI 76 FR-1422a, Meteorology Research, Inc., Altadena, California, 1976.
4. J. A. Ogren, D. L. Blumenthal, W. H. White, T. W. Tesche, M. A. Yoche and M. K. Liu, "Determination of the Feasibility of Ozone Formation in Power Plant Plumes", EPRI EA-307, Electric Power Research Institute, Palo Alto, California, 1976.
5. T. W. Tesche, J. A. Ogren and D. L. Blumenthal, "Ozone Concentrations in Power Plant Plumes: Comparison of Models and Sampling Data", Proceedings of the International Conference on Photochemical Oxidant Pollution and Its Control (September, 1976), EPA-600/3-77-001a, U. S. Environmental Protection Agency, Research Triangle Park, North Carolina, 1977.
6. J. A. Ogren, D. L. Blumenthal and A. H. Vanderpol, "Oxidant Measurements in Western Power Plant Plumes", EPRI EA-421, Electric Power Research Institute, Palo Alto, California, 1977.
7. T. B. Smith, J. A. Ogren, J. A. Anderson and P. R. Harrison, "Aerosol Plume Studies at the Mohave Power Plant", MRI 77 R-1487, Meteorology Research, Inc., Altadena, California, 1977.
8. J. A. Ogren, D. L. Blumenthal and W. H. White, "Pollutant Measurements in Plumes from Power Plants and Cities", EPA-600/7-78-041, U. S. Environmental Protection Agency, Research Triangle Park, North Carolina, 1978.
9. J. A. Ogren, J. A. Anderson and D. L. Blumenthal, "Midwest Interstate Sulfur Transformation and Transport Project: Aerial Measurements of Urban and Power Plant Plumes, July 1976", MRI 78 FR-1586, Meteorology Research, Inc., Altadena, California, 1978.
10. E. S. Macias, D. L. Blumenthal, J. A. Anderson, J. A. Ogren, B. K. Cantrell, and D. J. Shadoan, "Measurements of Size Distribution, Chemical Composition and Sources of Visibility Reducing Aerosols in the Southwestern U.S.", presented before the Division of Environmental Chemistry, American Chemical Society, Honolulu, Hawaii, April 1-6, 1979.
11. R. J. Charlson, J. A. Ogren, and R. H. Gammon, Review of Book, "Chemical Compounds in the Atmosphere", by T. E. Graedel, Bull. Amer. Meteor. Soc. 61, 488-489, 1980.
12. J. A. Ogren, R. J. Charlson and D. S. Covert, "Comments on the Relative Contribution of Fluctuations in Relative Humidity and Particulate Concentrations to the Variability of the Scattering Coefficient over the North Atlantic", Atmos. Environ. 15, 415, 1981.
13. J. A. Ogren, Review of "A Handbook to Estimate Climatological Concentration, Deposition and Horizontal Fluxes of Pollutants on a Regional Scale" by L. Machta, Water Air Soil Poll. 15, 389, 1981.
14. J. A. Ogren, "Wet Deposition of Elemental Carbon in Sweden", presented at NOSA Aerosol Symposium, Studsvik, Sweden, 22-23 November 1983.
15. J. Heintzenberg and J. A. Ogren, comment on "An Assessment of the Impact of Pollution on Global Cloud Albedo", Tellus 37B, 308-309, 1985.
16. J. Heintzenberg, H.-C. Hansson, J. A. Ogren, D. S. Covert, and J.-P. Blanchet, "Physical and Chemical Properties of Arctic Aerosols and Clouds", in Arctic Air Pollution (ed. B. Stonehouse), Cambridge Univ. Press, Cambridge, U.K., 25-35, 1986.
17. H.-C. Hansson, J. Heintzenberg, L. Asking, E. Swietlicki, and J.A. Ogren, "Combined sampling and analytical methodology for the investigation of the atmospheric aerosol." In Aerosols: Formation and Reactivity. Proc. 2nd Int Aerosol Conf. in Berlin, Pergammon, Oxford, 1986.
18. J. Heintzenberg, H.-C. Hansson, J.A. Ogren, and S.-Å. Odh, "A baseline aerosol monitoring station for near-unattended operation.". In Aerosols: Formation and Reactivity. Proc. 2nd Int Aerosol Conf. in Berlin, Pergammon, Oxford, 1986.
19. J.A. Ogren, J. Heintzenberg, A. Zuber, H.-C. Hansson, K.J. Noone, D.S. Covert, and R.J. Charlson. Measurements of the short-term variability of aqueous-phase mass-concentrations in cloud droplets. In Acid Deposition Processes At High Elevation Sites (eds. M.H. Unsworth and D. Fowler), Kluwer Academic Publ., pp.125-137, 1988.
20. J. Heintzenberg and J.A. Ogren, "The present knowledge of atmospheric transparency in the visible due to aerosols: Variability in space and time," Proc. Int. Meeting on Atmospheric Transparency for Satellite Application, Capri, Italy, 15-19 September 1986.
21. J. Heintzenberg, L. Gärdneus, and J. Ogren, "Size Distribution of trace substances in cloud droplets: A new application of optical particle sizing," presented at Int. Symp. on "Optical Particle Sizing: Theory and Practice," Rouen, France, 12-15 May 1987.
22. J. Ogren, J. Heintzenberg, and K. Noone. "Measurements of the Partitioning of Particle Mass and Number between Cloud Droplets and Interstitial Air," Annalen der Meteorologie 25, 34-36, 1988.
23. K.J. Noone, J. A. Ogren, and J. Heintzenberg. "An Examination of the Chemical and Physical Variability of Clouds at a Mountain-top Site in Central Sweden", Annalen der Meteorologie 25, 282-284, 1988.
24. J. A. Ogren and R. J. Charlson, Comment on "A Theoretical Study of the Wet Removal of Atmospheric Pollutants. Part I and II", J. Atmos. Sci. 46, 1867-1869, 1989.
25. J.A. Ogren, "Partitioning of H2O2 in Clouds," presented at the Nordic Symposium on Atmospheric Chemistry, Stockholm/Helsinki, December 1989.
26. K.J. Noone, J.A. Ogren, K.B. Johansson, A. Hallberg, S. Fuzzi, and J.A. Lind, "Hydrogen Peroxide Partitioning in Ambient Clouds," Proc. EUROTRAC Symposium '90, Garmisch-Partenkirchen, F.R.G, April 1990.
27. A. Hallberg, J.A. Ogren, and K.J. Noone, "Aerosol Partitioning In- and Out-of-Fog," Proc. EUROTRAC Symposium '90, Garmisch-Partenkirchen, F.R.G, April 1990.
28. J.A. Ogren, "Partitioning of H2O2 in Clouds," presented at the CACGP Symposium in Chamrousse, France, September, 1990.
29. J.A. Ogren and J. Heintzenberg, "Parametric Aerosol Sampling at Low Concentration Levels," Report AA-1, International Meteorological Institute in Stockholm, 1990.
30. Heintzenberg, J., Ogren, J. A., Odh, S.-Å., Bäcklin, L., and Danielsen, T. (1991). The MISU baseline station (Report AA-02). International Meteorological Institute in Stockholm, Department of Meteorology, Stockholm University.
31. Heintzenberg, J., Holmén, K., Odh, S.-Å., and Ogren, J. A. (1991). Air monitoring in the Arctic 1979-1990. Swedish Environmental Protection Agency.
32. Ogren, J., Noone, K., Hallberg, A., Heintzenberg, J., and Okada, K. (1991). Interactions between aerosol particles and clouds . EUROTRAC Annual Report 1990, p. 37-44.
33. Noone, B., Heintzenberg, J., Noone, K., Ogren, J., and Ström, J. (1991). CVI-measurements during ICE-89. In R. W. Saunders and P. R. A. Brown (Ed.), Fourth Workshop, International Cirrus Experiment/European Cloud Radiation Experiment (pp. 10-12). Reading, UK.
34. Ogren, J. A., Bodhaine, B. A., Harris, J. M. and Hofmann, D. J. 1991. Detection of Kuwait smoke particles at Mauna Loa Observatory. Eos, Trans. Am. Geophys. Union, October 29, 1991.
35. Noone, K. J., Hallberg, A., Heintzenberg, J., Svenningsson, B., Hansson, H.-C., Wiedensohler, A. and Ogren, J. A. 1992. Size-dependent scavenging efficiencies of aerosol particles in a polluted fog. Proc. 11th International Conference on Clouds and Precipitation, August 17-21, 1992, Montreal, Canada.
36. Ström, J., Heintzenberg, J., Noone, K.J., Noone, K.B., Ogren, J.A., Albers, F. and Quante, M. 1992. CVI measurements on small crystals in cirrus clouds. Proc. 11th International Conference on Clouds and Precipitation, August 17-21, 1992, Montreal, Canada.
37. Penner, J.E., Charlson, R.J., Hales, J.M., Laulainen, N., Leifer, R., Novakov, T., Ogren, J., Radke, L.F., Schwartz, S.E. and Travis, L. 1993. Quantifying and minimizing uncertainty of climate forcing by anthropogenic aerosols. U.S. Department of Energy report DOE/NBB-0092T, March, 1993.
38. Langner, J., T.S. Bates, R.J. Charlson, A.D. Clarke, P.A. Durkee, J. Gras, J. Heintzenberg, D.J. Hofmann, B. Huebert, C. Leck, J. Lelieveld, J.A. Ogren, J. Prospero, P.K. Quinn, H. Rodhe, and A.G. Ryaboshapko. 1993. The global atmospheric sulfur cycle: A comparison of the MOGUNTIA model predictions with observations. Department of Meteorology, Stockholm University, International Meteorological Institute in Stockholm, Report CM-81.
39. Noone, K.J., Ogren, J.A., Hallberg, A., Svenningsson, B., Hansson, H.-C., Wiedensohler, A., Okada, K. and Heintzenberg, J. 1994. The influence of aerosol particle composition on cloud droplet nucleation. Proc. Conf. on Atmos. Chem., Amer. Meteor. Soc., January 23-28, 1994, Nashville, U.S.A.
40. Ogren, J.A., Bodhaine, B.A., and Forbes, G.L. 1994. Control of the wavelength dependence of aerosol light scattering by the ratio of coarse to fine particles. Proc. Fourth Int. Aerosol Conf., Aug. 29 - Sept. 2, 1994, Los Angeles, U.S.A.
41. Wang, T., Carroll, M.A., Alber, G.M., Markevitch, A., Owens, K.R., Duderstadt, K.A., Marsik, F., Parrish, D.D., Holloway, J., Fehsenfeld, F.C., Ogren, J.A., Forbes, G., Blake, N., Blake, D.R., Merrill, J.T., and Moody, J.L. 1994. Ground-based measurements of NOx and total reactive nitrogen (NOy) at Sable Island, Nova Scotia during the NARE 1993 summer intensive. Eos, Trans. Am. Geophys. Union, 75, Nov. 1, 1994, paper A11B-8.
42. Carroll, M.A., Wang, T., Alber, G.M., Duderstadt, K.A., Sillman, M.S., Markevitch, A., Owens, K.R., Marsik, F., Parrish, D.D., Holloway, J., Fehsenfeld, F.C., Ogren, J.A., Forbes, G., Blake, N., Blake, D.R., Merrill, J.T., and Moody, J.L. 1994. The local photochemical environment and ozone production and loss at Sable Island, Nova Scotia, derived from measurements made during the NARE 1993 summer intensive. Eos, Trans. Am. Geophys. Union, 75, Nov. 1, 1994, paper A31B-7.
43. Quinn, P.K., Zenker, C.E., Ogren, J.A., Covert, D.S., and Marshall, S.F. 1994. Sulfate scattering to mass ratios at two mid-latitude northern hemisphere sites Eos, Trans. Am. Geophys. Union, 75, Nov. 1, 1994, paper A41D-2.
44. Ogren, J.A. and Sheridan, P.J. 1996. Vertical and horizontal variability of aerosol single scattering albedo and hemispheric backscatter fraction over the United States. Proc. 14th Int. Conf. Nucleation and Atmos. Aerosols, Helsinki, Finland.
45. Brechtel, F.J., Kreidenweis, S.M., and Ogren, J.A. 1996. Observations of the volatility of the ambient aerosol at a remote mid-latitude mountain site. J. Geophys. Res., submitted.

  1. Ogren, J.A. 1997. An integrated observing system for quantifying climate forcing by anthropogenic aerosols. Proc. First Sympos. Integrated Observing Systems, Amer. Meteor. Soc., Feb. 2-7, 1997, Long Beach, USA.
  2. Bergin, M.H., Halthore, R.N., Schwartz, S.E., Ogren J.A., McGraw, R., Nemesure, S., Comparison of Aerosol Column Properties Based on Nephelometer and Sun Photometer Measurements, Atmospheric Radiation Measurement (ARM) Aerosol Workshop, Oak Ridge, TN, Nov., 1996. (Oral presentation by R.S. Halthore).
  3. Ogren, J.A., 1997. Aerosol Radiative Properties Downwind of North America: Dependence on Airmass Trajectory. Presented at the 1997 Fall AGU meeting, Dec. 8-12, 1997, San Francisco.
  4. Sheridan, P.J., Bergin, M.H., and Ogren, J.A. 1997. Spatial and Temporal Variability of Aerosol Single-Scattering Albedo. Presented at the 1997 Fall AGU meeting, Dec. 8-12, 1997, San Francisco.
  5. Ogren, J.A., 1998. Enhanced Aerosol Measurements at NOAA’s Baseline Observatory at Barrow, Alaska. Poster presented at DOE/ARM Science Team meeting, Tucson, March 1998.
  6. Ogren, J.A., Bergin, M.H., and Sheridan, P.J. 1998. Aerosol Radiative Properties in the Southern Great Plains of the United States. Poster presented at DOE/ARM Science Team meeting, Tucson, March 1998.

INVITED SEMINARS AND LECTURES:

1. "Measurements of the absorption coefficient of stratospheric aerosols", NASA Langley Laboratory, Langley, VA, USA, November 1978.
2. "The atmospheric cycle of elemental carbon", Department of Meteorology, University of Stockholm, Stockholm, Sweden, May 1981.
3. "Measurements of the absorption coefficient of stratospheric aerosols", Department of Meteorology, University of Stockholm, Stockholm, Sweden, May 1981.
4. "Factors controlling the atmospheric cycle of elemental carbon", Department of Meteorology, University of Maryland, College Park, MD, USA, February 1982.
5. "Deposition of elemental carbon in Sweden", Department of Meteorology, University of Stockholm, Stockholm, Sweden, September 1982.
6. "The atmospheric cycle of elemental carbon", Pacific Northwest Laboratory, Battelle Research Institute, Richland, WA, USA, December 1982.
7. "The atmospheric cycle of elemental carbon", Brookhaven National Laboratory, Brookhaven, NY, USA, January 1983.
8. "The atmospheric cycle of elemental carbon", Department of Meteorology, Johannes Gutenburg University, Mainz, West Germany, May 1985.
9. "Measurements of the Size Dependence of Non-Volatile Materials in Cloud Droplets," Department of Meteorology, University of Stockholm, Stockholm, Sweden, January 1987.
10. "Chemical Composition of Clouds", European Science Foundation Symposium on Cloud Chemistry, Cambridge, U.K., July 1987.
11. "Theory and Measurement of the Size Dependence of Non-Volatile Materials in Cloud Droplets", Department of Nuclear Physics, Lund Institute of Technology, Lund, Sweden, May 1988.
12. "What's Happening in the Clouds?", Swedish Royal Institute of Engineering Sciences, Stockholm, Sweden, December 1988.
13. "The Physics and Chemistry of Clouds", Nordic Researcher's Course, Oppheim, Norway, June 1989.
14. "EUROTRAC Subproject GCE: A Summary", EUROTRAC Symposium '90, Garmisch-Partenkirchen, F.R.G, April 1990.
15. "An insider's view of cloud droplets", National Center for Atmospheric Research, Boulder, CO, U.S.A., July 1990.
16. "Measurements of the size-dependence of the scavenging efficiency of aerosol particles in fog", NOAA Aeronomy Laboratory, Boulder, CO, U.S.A., December 1991.
17. "Measurements of the size-dependence of the scavenging efficiency of aerosol particles in fog", NOAA Climate Monitoring and Diagnostics Laboratory, Boulder, CO, U.S.A., January, 1992.
18. "Measurements of the size-dependence of the concentration of non-volatile material in fog droplets," University of Rhode Island, February, 1992.
19. "Measurements of the size-dependence of the scavenging efficiency of aerosol particles in fog", University of Illinois at Urbana-Champaign, April, 1992.
20. "Measurements of the size-dependence of the scavenging efficiency of aerosol particles in fog", Colorado State University, October, 1992.
21. "Size-resolved measurements of aerosol light scattering at Sable Island, Canada," Department of Meteorology, University of Stockholm, Stockholm, Sweden, January 1993.
22. "Climate forcing by anthropogenic aerosols: The Sable Island connection", Atlantic Regional Office, Atmospheric Environment Service, Canada, July 1993. Also presented at Sable Island Upper Air Station, Canada, July 1993.
23. "Control of the wavelength dependence of aerosol light scattering by the ratio of coarse to fine particles," Institute for Tropospheric Research, Leipzig, Germany, May 1994.
24. "Aerosol forcing of climate," University of Veszprem, Veszprem, Hungary, May 1994.
25. "Aerosol forcing of climate," Institute for Atmospheric Physics, Hungarian Meteorological Service, Budapest, Hungary, May 1994.
26. "Climate forcing by atmospheric aerosols: NOAA's monitoring program," Hydrometeorological Institute of Slovenia, Ljubljana, Slovenia, February 1995.
27. "Climate forcing by atmospheric aerosols: NOAA's monitoring program," Department of Fundamental and Experimental Physics, University of La Laguna, Spain, March 1995.
28. "Monitoring aerosol intensive properties for use with climate models," Gordon Conference on Atmospheric Chemistry, Newport, Rhode Island, June 1995.
29. "Monitoring aerosol intensive properties for use with climate models," Department of Meteorology, University of Stockholm, Stockholm, Sweden, September, 1996.
30. "Measurements of the climate forcing properties of atmospheric aerosols," Center for Atmospheric Sciences, University of Mexico, Mexico City, Mexico, January, 1998.

GRADUATE STUDENT AND POST-DOCTORAL FELLOWSHIP ADVISING:

Hallberg, A. Department of Meteorology, University of Stockholm, Sweden, 1988-1994. Principal adviser, Ph.D awarded 1994.
Gonzalez Jorge, H. Department of Fundamental and Experimental Physics, University of La Laguna, Spain, 1994-present. Co-adviser, Ph.D. in progress.
Brechtel, F. Department of Atmospheric Science, Colorado State University, U.S.A., 1994-present. Member of Ph.D committee.
Bergin, M. U.S. Department of Energy Global Change Postdoctoral Fellowship, 1995-97. Research co-adviser.
McInnes, L. U.S. National Research Council Postdoctoral Associate, 1995-97. Research adviser.

SCIENTIFIC COMMITTEES:

EUROTRAC Committee of Subproject Coordinators, 1987-1991.
IGAC Multiphase Atmospheric Chemistry activity, coordinating committee, 1989-1995.
IAMAP Commission on Clouds and Precipitation, 1988-1996.
WMO/GAW Aerosol Science Advisory Group, 1991-present
U.S. DOE/ARM Aerosol Working Group, 1992-1993
U.S. National Research Council, Board on Atmospheric Sciences and Climate, Panel on Aerosol Radiative Forcing and Climate Change, 1993-1996.
AMS Committee on Atmospheric Chemistry, 1994-1997
NASA FIRE-III Drafting Panel, 1994
Center for Clouds, Chemistry and Climate, External Advisory Panel Member, 1994-
IGAC Focus on Atmospheric Aerosols, Direct Radiative Forcing activity, co-convener, 1995-

MEMBERSHIPS:

American Geophysical Union.
American Association for Aerosol Research.