Cynthia H. Twohy
Twohy, C.H., 1988: Sampling and analysis of cloud droplets by aircraft using a counterflow virtual impactor. M.S. Thesis, University of Washington, Department of Atmospheric Sciences, 133 pp.
Twohy, C.H., 1992: On the size dependence of the chemical properties of cloud droplets: exploratory studies by aircraft. NCAR Cooperative Thesis CT-137, University of Washington (Department of Atmospheric Sciences) and National Center for Atmospheric Research, 239 pp.
Twohy, C.H., P. Austin and R.J. Charlson, 1989: Chemical consequences of the initial diffusional growth of cloud droplets: a clean marine case. Tellus, 41B, 51-60.
Twohy, C.H., A.D. Clarke, S.G. Warren, L.F. Radke and R.J. Charlson, 1989: Light-absorbing material extracted from cloud droplets and its effect on cloud albedo. J. Geophys. Res., 94, 8623-8631.
Twohy, C.H., and D. Rogers, 1993: Airflow and water drop trajectories at instrument sampling points around the Beechcraft King Air and Lockheed Electra. J. Atmos. Oceanic Technol., 10, 566-578.
Drdla, K., A. Tabazadeh, R.P. Turco, M.Z. Jacobson, J.E. Dye, C. Twohy and D. Baumgardner, 1994: Analysis of the physical state of one Arctic polar stratospheric cloud based on observations. Geophys. Res. Lett., 21, 2475-2478.
Twohy, C.H., P.A. Durkee, B.J. Huebert and R.J. Charlson, 1995: Effects of aerosol particles on the microphysics of coastal stratiform clouds. J. Climate, 8, 773-783.
Twohy, C.H., and J.G. Hudson, 1995: Measurements of cloud condensation nucleus spectra within maritime cumulus cloud droplets: Implications for mixing processes. J. Appl. Meteor., 34, 815-833.
pdf copy Twohy, C.H., Schanot, A.J. and W.A. Cooper, 1997: Measurement of condensed water content in liquid and ice clouds using an airborne counterflow virtual impactor. J. Atmos. Oceanic Tech., 14, 197-202.
Gerber, H., C.H. Twohy, B. Gandrud, A.J. Heymsfield, G.M. McFarquhar, P.J. DeMott, and D.C. Rogers, 1998: Measurements of wave-cloud microphysical properties with two new aircraft probes. Geophys. Res. Lett., 25, 1117-1120.
Jensen, E. J., O. B. Toon, S. Kinne, G. W. Sachse, B. E. Anderson, K. R. Chan, C. H. Twohy, B. Gandrud, A. J. Heymsfield, and R. C. Miake-Lye, 1998: Environmental conditions required for contrail formation and persistence. J. Geophys. Res., 103, 3929-3936.
Jensen, E.J., O.B. Toon, A. Tabazadeh, G.W. Sachse, B.E. Anderson, K.R. Chan, C. Twohy, B. Gandrud, S.M. Aulenbach, A. Heymsfield, J. Hallett, and B. Gary, 1998: Ice nucleation processes in upper tropospheric wave-clouds observed during SUCCESS. Geophys. Res. Lett., 25, 1363-1366.
Laucks, M.L., and C. H. Twohy, 1998: Size-dependent sampling efficiency of an airborne counterflow virtual impactor. Aer. Sci. and Tech., 28, 40-61.
Twohy, C.H., 1998: Model calculations and wind tunnel testing of an isokinetic shroud for high-speed sampling. Aer. Sci. and Tech., 28, 261-280.
pdf copy Twohy, C. H., and B. Gandrud, 1998: Electron microscope analysis of residual particles from aircraft contrails. Geophys. Res. Lett., 25, 1359-1362.
Vay, S., B.E. Anderson, G.W. Sachse, J.E. Collins, J.R. Podolske, C.H. Twohy, B. Gandrud, K. R. Chan, S.L. Baughcum, and H.A. Wallio, 1998: DC-8-based observations of aircraft CO, CH4, N2O, and H2O emission indices during SUCCESS. Geophys. Res. Lett., 25, 1717-1720.
Weinheimer, A.J., T.L. Campos, J.G. Walega, F.E. Grahek, B.A. Ridley, D. Baumgardner, C. H. Twohy, and B. Gandrud, and E.J. Jensen, 1998: Uptake of NOy on wave-cloud ice particles. Geophys. Res. Lett., 25, 1725-1728.
Clement, C. F., Ford, I. J. and C. H. Twohy, 2000: Mixing of Atmospheric Gas Concentrations. Phys. Res. Lett., 84, 4010-4013.
Blomquist , B. W., B. J. Huebert, S. G. Howell, M. Litchy, C. H. Twohy, A. Schanot, D. Baumgardner, B. Lafleur, R. Seebaugh and M. L. Laucks, 2001: An evaluation of the community aerosol inlet for the NCAR C-130. J. Atmos. Ocean. Tech., 18, 1387-1397.
Jensen, E. J., O. B. Toon, S. A. Vay, J. Ovarlez, R. May, P. Bui, C. H. Twohy, B. W. Gandrud, Pueschel, R.F. and U. Schumann, 2001: Prevalence of ice supersaturated regions in the upper troposphere: implications for optically thin ice cloud formation. J. Geophys. Res., 106, 17,253-17,266.
pdf copy Twohy, C. H., J. G. Hudson, S. S. Yum, J. R. Anderson, S. K. Durlak, and D. Baumgardner, 2001: Characteristics of cloud nucleating aerosols in the Indian Ocean region. J. Geophys. Res., 106, 28699-28710.
Heymsfield, A. J., A. Bansemer, S. Lewis, J. Iaquinta, M. Kajikawa and C. Twohy, 2002: A general approach for deriving the properties of cirrus and stratiform ice cloud particles. J. Atmos. Sci., 59, 3-29.
pdf copy Twohy, C. H., C. F. Clement, B. W. Gandrud, A. J. Weinheimer, T. Campos, D. Baumgardner, W. H. Brune, I. Faloona, D. Tan, G. W. Sachse and S. A. Vay, 2002: Deep convection as a source of new particles in the midlatitude upper troposphere. J. Geophys. Res., 107, 4560, doi: 10.1029/2001JD000323.
Clement, C. F., I. J. Ford, C. H. Twohy, A. Weinheimer and T. Campos, 2002: Particle production in the outflow of a mid-latitude storm. J. Geophys. Res., 107, 4559, doi: 10.1029/2001JD001352.
pdf copy Twohy, C. H., J. W. Strapp, and M. Wendisch, 2003: Performance of a counterflow virtual impactor in the NASA Icing Research Tunnel. J. Atmos. Ocean. Tech., 20, 781-790.
Stevens, B., D. H. Lenschow, G. Vali, H. Gerber, …C. Twohy et al., 2003: Dynamics and chemistry of marine stratocumulus—DYCOMS-II. Bull. of Amer. Meteor. Soc., 84, 579-593.
Garrett, T. J., H. Gerber, D. G. Baumgardner, C. H. Twohy, and E. M. Weinstock, 2003: Small, highly reflective ice crystals in low-latitude cirrus. Geophys. Res. Lett, 30 (21), 2132, doi:10.1029/2003GL018153.
Heymsfield, A. J., A. Bansemer, C. Schmitt, C. Twohy, and M. R. Poellot, 2004: Effective ice particle densities derived from aircraft data. J. Atmos. Sci., 61, 982-1003.
pdf copy Beard, K.V., H. T. Ochs, and C. H. Twohy, 2004: Aircraft measurements of high average charges on cloud drops in stratiform clouds, Geophys. Res. Lett., 31, L14111, doi:10.1029/2004GL020465.
Heymsfield, A. J., L. M. Miloshevich, C. Schmitt, A. Bansemer, C. Twohy, M. R. Poellot, and A. Fridland, 2005: Homogeneous ice nucleation in tropical convection and its influence on cirrus anvil microphysics, J. Atmos. Sci, 62, 41-64.
pdf copy Twohy, C. H., M. D. Petters, J. R. Snider, B. Stevens, W. Tahnk, M. Wetzel, L. Russell and F. Burnet, 2005: Evaluation of the aerosol indirect effect in marine stratocumulus clouds: droplet number, size, liquid water path and albedo, J. Geophys. Res., in press.
Garrett, T. J., B. C. Navarro, C. H. Twohy, E. J. Jensen, D. Baumgardner, P. T. Bui, H. Gerber, R. Herman, A. J. Heymsfield, P. Lawson, P. Minnis, L. Nguyen, M. Poellot, S. K. Pope, F. P. J. Valero, and E. M. Weinstock, 2005: Evolution of a Florida cirrus anvil, J. Atmos. Sci., in press.
Twohy, C. H., J. R. Anderson, and P. A. Crozier, 2005: Organic aerosols, clouds and climate, Nature, submitted.
Mace, G. G, S. Benson, K. L. Sonntag, S. Kato, Q. Min, P. Minnis, C. Twohy, M. Poellot and C. Long, 2005: Cloud radiative forcing at the ARM Climate Research Facility: Part 1. Technique, validation, and comparison to satellite-derived diagnostic quantities, J. Geophys. Res., submitted.
Heymsfield, A. J., C. Schmitt, A. Bansemer, G-J. van Zadelhoff, M. McGill, D. Baumgardner, and C. Twohy, 2005: Effective Radius of Ice Cloud Particle Populations Derived from Aircraft Probes, J. Atmos. Ocean. Tech.., submitted.
Petters, M. D., J. R. Snider, C. H. Twohy, and J. R. Anderson, 2005: Measurement and Prediction of Cloud Condensation Nuclei. Part II: DYCOMS-II Aerosol-to-CCN Closure Studies and CCN Activation Spectra, J. Geophys. Res., submitted.
Clement, C. F., L. Pirjola, C. H. Twohy, I. J. Ford, and M. Kulmala, 2004: Analytic and numerical calculations of formation of a sulphuric acid aerosol in the upper troposphere, J. Aer. Sci., submitted.
Twohy, C. H. and M. R. Poellot, Chemical characteristics of ice residual nuclei in anvil cirrus clouds: implications for ice formation processes, Atmos. Chem. Phys. Disc, submitted.
Charlson, R.J., C.H. Twohy and P.K. Quinn, 1988: Physical influences of altitude on the chemical properties of clouds and of water deposited from the troposphere. In Acid Deposition at High Altitude Sites. M.H. Unsworth and D. Fowler (eds.), Kluwer Academic Publishers.
Baumgardner D., J-F. Gayet, H. Gerber, A. Korolev and C. Twohy, 2002: Clouds: Measurement Techniques In Situ. In Encyclopedia of Atmospheric Sciences. J. R. Holton, J. A. Curry and Pyle J (eds.), Academic Press, London, pp 489-498.
Twohy, C.H., 1991: Airborne Condensation Nucleus Counter User's Guide. Technical Note TN-356+EDD, National Center for Atmospheric Research, 21 pp.
Twohy, C.H., and D. Rogers, 1991: Flow speed and particle trajectories around aircraft: theory and measurements. In Technical Note TN-362+1A, National Center for Atmospheric Research, 15 pp.
Kofer, W. R. III, B. E. Anderson, V. S. Connors, C. C. Wey, T. Sanders, C. Twohy, C. A. Brock, E. L. Winstead, D. Pui, D. Chen, D. E. Hagan, and P. Whitefield, 2001: NASA’s Atmospheric Effects of Aviation Program: Results of the August 1999 aerosol measurement intercomparison workshop, laboratory phase, NASA Technical Memorandum/TM-2001-21089, June 2001.
Twohy, C.H., A.D. Clarke, S.G. Warren, L.F. Radke and R.J. Charlson, 1989: Measurements of the light-absorbing material inside cloud droplets and its effect on cloud albedo. Symposium on the role of clouds in atmospheric chemistry and global climate, Anaheim, American Meteorological Society, 215-220.
Twohy, C.H., B.J. Huebert, P.A. Durkee and R.J. Charlson, 1990: Droplet chemistry in stratocumulus clouds. Conference on Cloud Physics, San Francisco, American Meteorological Society, 527-531.
Baumgardner, D., and C. Twohy, 1991: Conditional sampling of aerosol and cloud droplets in continental and marine air masses, XX General Assembly of the IUGG, Vienna, Austria, 32.
Twohy, C.H., and D. Rogers, 1991: Airflow effects on the distribution of water droplets around an aircraft. Seventh Symposium on Meteorological Observations and Instrumentation, New Orleans, American Meteorological Society, 256-260.
Twohy, C.H., P.A. Durkee, K. Nielsen and R.J. Charlson, 1991: Relationships between aerosol particles, droplets, and satellite-measured reflectance in coastal stratiform clouds. XX General Assembly of the IUGG, Vienna, Austria, 50.
Dye, J.E., D. Baumgardner, S. Borrmann, C. Twohy, K. Drdla, and P. Newman, 1992: Stratospheric sulfate droplets and transition to polar stratospheric cloud particles. presented at AGU Fall Meeting, San Francisco, American Geophysical Union.
Twohy, C.H., and T.L. Anderson, 1992: Sampling artifacts produced in aircraft aerosol inlets by the presence of large cloud droplets. Eleventh Annual Meeting, San Francisco, American Association for Aerosol Research, 300.
Twohy, C.H., P.A. Durkee and R.J. Charlson, 1992: Effects of aerosol particles on droplet size distributions and satellite-measured reflectance in coastal stratiform clouds, Abstracts, Eleventh Annual Meeting, San Francisco, American Association for Aerosol Research, 307.
Anderson, T.L., and C.H. Twohy, 1993: Collection and exclusion of large cloud elements with a counterflow virtual impactor. Twelfth Annual Meeting, Oak Brook, Illinois, American Association for Aerosol Research, 36.
Radke, L.R., and C.H. Twohy, 1993: Aerosol particle production near the atmosphere's clouds interface: sorting fact from artifact. AGU Fall Meeting, San Francisco, California (5-10 Dec 1993), American Geophysical Union, 174.
Radke, L.R., B.W. Gandrud, J.E. Ragni, C.H. Twohy and D. Baumgardner, 1994: Aircraft research platforms with stratospheric capability. Proc. First Intl. Airborne Remote Sensing Conference and Exhibition, Strasbourg, France (11-15 Sept 1994), Environmental Research Institute of Michigan, I281-I293.
Twohy, C.H., 1994: Measurement of condensed water content in clouds using an airborne counterflow virtual impactor.Proc. Conference on Aerosols and Atmospheric Optics, Snowbird, Utah (26-30 Sept 1994), American Geophysical Union., 534.
Twohy, C.H., A.J. Schanot, M.L. Laucks, T.L. Anderson, and R.J. Charlson, 1994: Measurement of ice cloud properties using an airborne counterflow virtual impactor. Fourth International Aerosol Conference, Los Angeles, California (29 Aug-2 Sept 1994), American Association for Aerosol Research, 1045.
Twohy, C.H., 1995: Precipitation. In Gale Encyclopedia of Science, Gale Research, Detroit.
Laucks, M.L., and C. H. Twohy, 1996: Size-dependent sampling efficiency of an airborne counterflow virtual impactor. Fifteenth Annual Conference, Orlando (14-18 Oct 1996), American Association for Aerosol Research, 233.
Litchy, M.L., S.G. Howell, A.D. Clarke, B.J. Huebert, D. Baumgardner, D. Rogers, and C. H. Twohy, 1996: Measurements of the passing efficiency of the community aerosol inlet and associated tubing on NCAR's C-130 aircraft. Fifteenth Annual Conference, Orlando (14-18 Oct 1996), American Association for Aerosol Research, 20.
Twohy, C.H., 1996: Model calculations and wind tunnel testing of a shroud for an airborne counterflow virtual impactor. Fifteenth Annual Conference, Orlando (14-18 Oct 1996), American Association for Aerosol Research, 232.
Faloona, I., D. Tan, W. Brune, C. Twohy, and B. Gandrud, 1997: Measurements of OH/HO2 in and around cirrus clouds. AGU Spring Meeting, Baltimore, Maryland (27-30 May 1997), American Geophysical Union, S86 (EOS supplement).
Jensen, E.J., O.B. Toon, A. Tabazadeh, G.W. Sachse, B.E. Anderson, K.R. Chan, C. Twohy, and B. Gandrud, 1997, Ice nucleation processes in upper tropospheric wave-clouds observed during SUCCESS. AGU Spring Meeting, Baltimore, Maryland (27-30 May 1997), American Geophysical Union, S94 (EOS supplement).
Twohy, C. H., B.W. Gandrud, A.J. Heymsfield, D. Baumgardner, C. Buettner, H. Gerber, P. DeMott, and K R. Chan, 1997: Measurements of contrail nuclei and cirrus cloud microphysics. Invited paper. AGU Spring Meeting, Baltimore, Maryland (27-30 May 1997), American Geophysical Union, S97 (EOS supplement).
Twohy, C.H. and B. Gandrud, 1997: Aerosol particles in the upper troposphere over the central and western United States. Sixteenth Annual Conference, Denver (13-17 Oct 1997), American Association for Aerosol Research, 79.
Twohy, C. H., B. Gandrud, and A. Weinheimer, 1997: Particle production near cirrus anvil outflow in the upper troposphere. Seventeenth Annual Conference, Cincinnati (22-26 Jun 1998), American Association for Aerosol Research.
Twohy, C. H., C. F. Clement, I. J. Ford, B. Gandrud, A. Weinheimer, W. Brune, G. Sachse, H. Gerger, D. Baumgardner, and R. Chan, 1999: Mid-latitude storms as a potential source of new particles in the upper troposphere. Eighteeth Annual Conference, Tacoma (11-15 Oct 1999), American Association for Aerosol Research.
Twohy, C. H., J. Anderson, and J. Hudson, 1999: Characteristics of cloud-nucleating aerosols in the Indian Ocean Experiment, 1999 Fall Meeting, San Francisco (13-17 Dec 1999), American Geophysical Union.
Beard, K. V., J. S. Naul, H. T. Ochs III, and C. H. Twohy, 2000: Analysis of aircraft measurement of drop and aerosol charges in wintertime continental clouds, Proceedings on 13th Inst. Conference on Clouds and Precipitation, Reno, Nevada (14-18 Aug 2000), 1028-1029.
Twohy, C. H., J. W. Strapp and J. R. Oldenberg, 2000: Performance of a counterflow virtual impactor in the NASA icing research tunnel, Proceedings on 13th Inst. Conference on Clouds and Precipitation, Reno, Nevada (14-18 Aug 2000), 206-209.
Clement, C. F., I. J. Ford, and C. H. Twohy, 2000: Aerosol formation and mixing in the upper troposphere, Nineteenth Annual Conference, St. Louis (6-10 Nov 2000), American Association for Aerosol Research, 390.
Twohy, C. H., J. G. Hudson, J. R. Anderson, S. K. Durlak, S. S. Yum, and D. Baumgardner, 2000: Characteristics of cloud nucleating aerosols in the Indian Ocean region, Nineteenth Annual Conference, St. Louis (6-10 Nov 2000), American Association for Aerosol Research, 212.
Clement, C. F., I. J. Ford, and C. H. Twohy, 2000: Aerosol nucleation and mixing in the upper troposphere, European Aerosol Conference 2000, Dublin (4-8 Sept 2000), European Aerosol Assembly, S570-S571.
Twohy, C. H., J. G. Hudson, J. R. Anderson, S. K. Durlak, S. S. Yum, and D. Baumgardner, 2000: Characteristics of cloud nucleating aerosols in the Indian Ocean region, European Aerosol Conference 2000, Dublin (4-8 Sept 2000), European Aerosol Assembly, S7-S8.
Twohy, C. H., J. R. Anderson, J. G. Hudson, 2001: Interdependencies between size, composition, and critical supersaturation of cloud-nucleating aerosols, Twentieth Annual Conference, Portland, Oregon (15-19 Oct 2001), American Association for Aerosol Research, 307.
Clement, C. F., I. J. Ford, and C. H. Twohy, 2001: The origins of fluctuations in aerosol and gas concentrations following mixing in the upper troposphere, Twentieth Annual Conference, Portland, Oregon (15-19 Oct 2001), American Association for Aerosol Research, 296.
Clement, C. F., I. J. Ford, and C. H. Twohy, 2001: Production of a sulphuric acid aerosol in the upper troposphere, Twentieth Annual Conference, Portland, Oregon (15-19 Oct 2001), American Association for Aerosol Research, 532.
Twohy, C. H., J. R. Anderson, J. Vanegas, P. DeMott, D. Rogers, P. Crozier, 2002: Characteristics of cloud condensation nuclei and ice nuclei as measured by electron microscopy, Twenty-first Annual Conference, Charlotte, North Carolina (7-11 Oct 2002), American Association for Aerosol Research, 261.
Clement, C. F., C. H. Twohy, L. Pirjola, and I. J. Ford, 2002: Analytic and numerical calculations of formation of a sulphuric acid aerosol in the upper troposphere, Twenty-first Annual Conference, Charlotte, North Carolina (7-11 Oct 2002), American Association for Aerosol Research, 242.
Fridlind, A., A. Ackerman, E. Jensen, D. Stevens, D. Wang, A. Heymsfield, L. Miloshevich, C. Twohy, M. Poellot, T. VanReken, T. Rissman, V. Varutbangkul, R. Flagan, J. Seinfeld, and H. Jonsson, 2003: Aerosol-cloud interactions during tropical deep convection: Evidence for the importance of free tropospheric aerosols, Twenty-second Annual Conference, Anaheim, California (20-24 Oct 2003), American Association for Aerosol Research, 292.
Twohy, C. H., J. R. Anderson, and P. Crozier, 2003: Measurements of organic cloud condensation nuclei, Twenty-second Annual Conference, Anaheim, California (20-24 Oct 2003), American Association for Aerosol Research, 176.
Garrett, T., Gerber, H., D. Baumgardner, C. Twohy, and E. Weinstock, 2003: Small, highly reflective ice cystals in CRYSTAL-FACE anvil cirrus, American Geophysical Union Fall Meeting (8-12 December 2003), San Francisco.
Heymsfield, A. J., D. Baumgardner, M. Poellot, C. Twohy, E. Weinstock, J. Smith, D. Sayres, L. Avallone, and G. Hallar, 2003: Tropical anvil cirrus microphysics, American Geophysical Union Fall Meeting (8-12 December 2003), San Francisco.
Navarro, B.C., T.J. Garrett, D. Baumgardner, P. T. Bui, B. Bush, H. Gerber, R. Herman, J. J. Heymsfield, P. Lawson, P. Minnis, M. Poellot, C. Twohy, F. Valero, and E. M. Weinstock, 2003: The microphysical and radiative evolution of a cirrus anvil during CRYSTAL-FACE, American Geophysical Union Fall Meeting (8-12 December 2003), San Francisco.
Garrett, T., Gerber, H., D. Baumgardner, C. Twohy, and E. Weinstock, 2004: Microphysical relationships in CRYSTAL-FACE anvil cirrus, 14th International Conference on Clouds and Precipitation (18-23 July 2004), Bologna, Italy.
Gerber, H., C. H. Twohy, and M. Poellot; 2004: Nephelometer measurements in Florida thunderstorms, 14th International Conference on Clouds and Precipitation (18-23 July 2004), Bologna, Italy.
Heymsfield, A. J., A. Bansemer, C. Schmitt, D. Baumgardner, M. Poellot, C. Twohy, E. Weinstock, J. Smith, L. Avallone, G. Hallar, and R. P. Lawson, 2004: Properties of tropical convectively generated cirrus, 14th International Conference on Clouds and Precipitation (18-23 July 2004), Bologna, Italy.
Kok, G., C. H. Twohy, and D. Baumgardner, 2004: The compact Cloud Spectrometer and Impactor: The next generation CVI, 14th International Conference on Clouds and Precipitation (18-23 July 2004), Bologna, Italy.
Petters, M., J. Snider and C. Twohy, 2004: About the prediction of cloud condensation nuclei from aerosol physicochemical data, 14th International Conference on Clouds and Precipitation (18-23 July 2004), Bologna, Italy.
Poellot, M., P. Kucera, A. J. Heymsfield, C. Twohy, H. Gerber, 2004: A case study of tropical cirrus anvil microphysics from CRYSTAL-FACE, 14th International Conference on Clouds and Precipitation (18-23 July 2004), Bologna, Italy.
Beard, K. V., J. S. Naul, H. T. Ochs III, and C. H. Twohy, 2004: Aircraft measurements high average charges on cloud droplets, 14th International Conference on Clouds and Precipitation (18-23 July 2004), Bologna, Italy.
Crozier, P., J. R. Anderson and C. H. Twohy, 2004: Determination of elemental composition and structure of individual organic cloud condensation nuclei, Microscopy Society of America, Microscopy and Microanalysis 2004, v. 10, supplement 02, 878-879.
Twohy, C. H., M. D. Petters, J. R. Snider, B. Stevens, W. Tahnk, M. Wetzel, L. Russell and F. Burnet, 2004: Measurements of the aerosol indirect effect in marine stratiform clouds, Atlanta, Georgia (4-8 Oct 2004), American Association for Aerosol Research, 40.
Mace, G., R. Riveland, S. Benson, S. Platnick, L. Avallone, E. Weinstock, D. Sayres, C. Twohy, T. Garrett, G. Kok, A. Heymsfield, 2004: Comparison of In-Situ Cirrus Cloud Water Path and Optical Depth Measurements with MODIS Retrievals, 4th Intl. Symposium on Remote Sensing of the Atmosphere, Environment, and Space conference, Honolulu, Hawaii (8-11 November 2004), The International Society for Optical Engineering.
DeMott, P. J., C. H. Twohy, A. J. Prenni, A. J., S. D. Brooks, S. M. Kreidenweis, D. C. Rogers, and M. Poellot, 2004: Ice nucleation by cloud particle residues: Chemical compositions and inferences regarding ice initiation in clouds, American Geophysical Union Fall Meeting (13-17 December 2004), San Francisco.
Spackman, J. R., D. S. Sayres, J. V. Pittman, J. B. Smith, E. M. Weinstock, J. G. Anderson, C. H. Twohy and G. L. Kok, In Situ Measurements of Ice Water Content on the NASA WB-57F during MidCiX: Implications for MLS and CloudSat Validation, AURA Science Meeting, Pasadena, Feb 2005.