Source: https://science.gsfc.nasa.gov/sed/bio/ralph.a.kahn
Timestamp: 2019-04-19 08:40:19+00:00

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Ralph Kahn, a Senior Research Scientist at NASA’s Goddard Space Flight Center, received his PhD in applied physics from Harvard University. He spent 20 years as a Research Scientist and Senior Research Scientist at the Jet Propulsion Laboratory, where he studied climate change on Earth and Mars, and also led the Earth & Planetary Atmospheres Research Element. Kahn is Aerosol Scientist for the NASA Earth Observing System's Multi-angle Imaging SpectroRadiometer (MISR) instrument. He focuses on using MISR’s unique observations, combined with other data and numerical models, to learn about wildfire smoke, desert dust, volcano and air pollution particles, and to apply the results to regional and global climate-change questions. Kahn has lectured on Climate Change and atmospheric physics at UCLA, Caltech and many other venues, and is editor and founder of PUMAS, the on-line journal of science and math examples for pre-college education. Web of Science publications and citation metrics can be found here. Download his CV and List of Presentations for more details.
Liu, Y., D. Chen, and R. A. Kahn. 2009. "Review of the applications of Multiangle Imaging SpectroRadiometer to air quality research." Science in China, D: 132-144.
Kahn, R., W. Li, J. Martonchik, et al. C. Bruegge, D. Diner, B. Gaitley, W. Abdou, O. Dubovik, B. Holben, S. Smirnov, Z. Jin, and D. Clark. 2005. "MISR low-light-level calibration and implications for aerosol retrieval over dark water." J Atmos Sci, 62: 1032-1062.
Jin, Z., T. Charlock, W. Smith, et al. K. Rutledge, G. Cota, R. Kahn, J. Redemann, T. Zhang, D. Rutan, and F. Rose. 2005. "Radiation measurements and model simulation for CLAMS." J Atmos Sci, 62: 1053-1071.
Kahn, R., W.-H. Li, J. V. Martonchik, et al. C. J. Bruegge, D. J. Diner, B. J. Gaitley, W. Abdou, O. Dubovik, B. N. Holben, A. Smirnov, Z. Jin, and D. Clark. 2005. "MISR Calibration and Implications for Low-Light-Level Aerosol Retrieval over Dark Water." J Atmos Sci, 62: 1032-1052.
Kahn, R. A., B. J. Gaitley, J. V. Martonchik, et al. D. J. Diner, K. A. Crean, and B. N. Holben. 2005. "Multiangle Imaging Spectroradiometer (MISR) global aerosol optical depth validation based on 2 years of coincident Aerosol Robotic Network (AERONET) observations." J Geophys Res, 110 (D10S04): 40194.
Seinfeld, J., R. A. Kahn, T. Anderson, et al. R. Charlson, R. Davies, D. Diner, J. Ogren, S. Schwartz, and B. Wielicki. 2004. "Scientific objectives, measurement need,s and challenges motivating the PARAGON aerosol initiative." Bull Am Met Soc, 85: 1503-1509.
Diner, D., R. Menzies, R. Kahn, et al. T. Anderson, J. Bosenberg, R. Charlson, B. Holben, C. Hostetler, M. Miller, J. Ogren, G. Stephens, O. Torres, B. Wielicki, P. Rasch, L. Travis, and W. Collins. 2004. "Using the PARAGON framework to establish an accurate consistent and cohesive long-term aerosol record." Bull Am Met Soc, 85: 1535-1548.
Pinty, B., M. M. Verstraete, N. Gobron, et al. F. Roveda, Y. Govaerts, J. V. Martonchik, D. J. Diner, and R. A. Kahn. 2001. "Exploitation of surface albedo derived from the Meteosat data to characterize land surface changes." Remote Sensing and Climate Modeling: Synergies and Limitations, Dordrecht, Boston, London: 51-67.
Diner, D., W. Abdou, J. Conel, et al. K. Crean, B. Gaitley, M. Helmlinger, R. Kahn, J. Martonchik, and S. Pilorz. 2001. "MISR aerosol retrievals over southern Africa during the SAFARI-2000 dry season campaign." Geophys Res Lett, 28: 3127-3130.
Kahn, R., P. Banerjee, and D. McDonald. 2001. "The sensitivity of multiangle imaging to natural mixtures of aerosols over ocean." J Geophys Res, 106 (D16): 18219-18238.
Pinty, B., F. Roveda, M. Verstraete, et al. N. Gobron, Y. Covaerts, J. Martonchik, D. Diner, and R. Kahn. 2000. "Surface Albedo Retrieval from METEOSAT: Part 1: Theory." J Geophys Res, 105: 18099-18112.
Kahn, R. A., and A. Braverman. 1999. "What shall we do with the data we are expecting from upcoming Earth observation satellites?" J. Comput. Graph. Statistics, 575-588.
Bruegge, C., N. Chrien, D. Diner, R. A. Kahn, and J. Martonchik. 1998. "MISR radiometric uncertainty analyses and their utilization within geophysical retrievals." Metrologia, 35: 571-579.
Kahn, R. A., and D. Wenkert. 1997. "Earth Observing System." Encyclopedia of Planetary Sciences, 211-215, ISBN: 978-1-4020-4520-2.
Conel, J. E., W. C. Ledeboer, S. H. Pilorz, et al. J. V. Martonchik, R. A. Kahn, W. Abdou, C. Bruegge, M. C. Helmlinger, and B. J. Gaitley. 1997. "Ground-based validation of the EOS Multi-angle Imaging SpectroRadiometer (MISR) aerosol retrieval algorithms and science data products." Geoscience and Remote Sensing (IGARSS '97. Remote Sensing - A Scientific Vision for Sustainable Development, 1997 IEEE International), 4: 1743-1748.
Kahn, R. A. 1995. "Temperature structure of a Martian local dust storm." J. Geophys. Res, 100: 5265-5275.
James, P. B., R. T. Clancy, S. W. Lee, et al. L. J. Martin, R. B. Singer, E. Smith, R. A. Kahn, and R. W. Zurek. 1994. "Monitoring Mars with the Hubble Space Telescope: 1990-1991." Icarus, 109: 79-101.
Kahn, R. A., S. W. Lee, L. J. Martin, and R. W. Zurek. 1992. "The Martian Dust Cycle." Mars, 1017-1053.
Kahn, R. A., and J. Appleby. 1991. "Planetary Atmospheres: U.S. National Report to the International Union of Geodesy and Geophysics 1987-1990." Reviews of Geophysics Supplement, 328-337.
Kahn, R. A., E. Guinness, and R. Arvidson. 1986. "Loss of small-scale surface texture in Viking Orbiter images due to atmospheric aerosols, and implications for inferences about surface history." Icarus, 22-38.
Jaquin, F., P. Gierasch, and R. A. Kahn. 1986. "The vertical structure of limb hazes in the Martian atmosphere." Icarus, 442-461.
Kahn, R. A. 1985. "The Evolution of CO2 on Mars." Icarus, 175-190.
Kahn, R. A. 1984. "The spatial and seasonal distribution of Martian clouds, and some meteorological implications." J. Geophys. Res., 6672-6688.
Kahn, R. A., and P. Gierasch. 1982. "Long cloud observations on Mars and implications for boundary layer characteristics over slopes." J. Geophys. Res., 867-880.
Kahn, R. A., R. Goody, and J. Pollack. 1981. "The Martian twilight." J. Geophys. Res., 5833-5838.
Diner, D., R. A. Kahn, C. J. Bruegge, et al. J. V. Martonchik, W. A. Abdou, B. J. Gaitley, M. C. Helmlinger, O. V. Kalashnikova, and W.-H. Li. 2004. "Refinements to MISR's radiometric calibration and implications for establishing a climate-quality aerosol observing system." Proc. SPIE 5652: 57-65.
Bruegge, C. J., W. A. Abdou, D. J. Diner, et al. B. J. Gaitley, M. C. Helmlinger, R. A. Kahn, and J. V. Maronchik. 2004. "Validating the MISR radiometric scale for the ocean aerosol science communities." Post-launch calibration of satellite sensors Leiden, Netherlands: 103-115.
Gierasch, P. J., R. E. Goody, R. E. Young, et al. D. Crisp, C. Edwards, R. A. Kahn, D. Rider, A. DelGenio, R. Greeley, A. Hou, C. B. Leovy, D. McCleese, and M. Newman. 1997. "The general circulation of the Venus atmosphere: An assessment." Venus 459-500.
Rind, D., R. A. Kahn, M. Chin, et al. S. Schwartz, L. Remer, G. Feingold, H. Yu, P. Quinn, and R. Halthore. 2009. "The Way Forward, in Atmospheric Aerosol Properties and Climate Impacts." A Report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research. [Mian Chin, Ralph A. Kahn, and Stephen E. Schwartz (eds.)]. National Aeronautics and Space Administration, Washington, D.C., USA.
Rind, D., M. Chin, G. Feingold, et al. D. Streets, R. A. Kahn, S. Schwartz, and H. Yu. 2009. "Modeling the Effects of Aerosols on Climate, in Atmospheric Aerosol Properties and Climate Impacts." A Report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research. [Mian Chin, Ralph A. Kahn, and Stephen E. Schwartz (eds.)]. National Aeronautics and Space Administration, Washington, D.C., USA.
Remer, L., M. Chin, P. DeCola, et al. G. Feingold, R. Halthore, R. A. Kahn, P. Quinn, D. Rind, S. Schwartz, D. Streets, and H. Yu. 2009. "Executive Summary, in Atmospheric Aerosol Properties and Climate Impacts." A Report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research. [Mian Chin, Ralph A. Kahn, and Stephen E. Schwartz (eds.)]. National Aeronautics and Space Administration, Washington, D.C., USA.
Kahn, R. A., H. Yu, S. Schwartz, et al. M. Chin, G. Feingold, L. A. Remer, D. Rind, R. Halthore, and P. L. Decola. 2009. "Introduction, in Atmospheric Aerosol Properties and Climate Impacts." A Report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research. [Mian Chin, Ralph A. Kahn, and Stephen E. Schwartz (eds.)]. National Aeronautics and Space Administration, Washington, D.C., USA.
Yu, H., P. Quinn, G. Feingold, et al. L. Remer, R. A. Kahn, M. Chin, and S. Schwartz. 2009. "Remote Sensing and In Situ Measurements of Aerosol Properties, Burdens, and Radiative Forcing." in Atmospheric Aerosol Properties and Climate Impacts, A Report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research. [Mian Chin, Ralph A. Kahn, and Stephen E. Schwartz (eds.)]. National Aeronautics and Space Administration, Washington, D.C., USA.

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