George Tselioudis

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George Tselioudis

  • RSCH AST, EARTH SCIENCES REMOTE SENS
  • 212.678.5565
  • NASA GISS
  • 2880 Broadway
  • New York , NY 10025
  • Employer: NASA
  • Positions/Employment

    2013 - Present

    Research Physical Scientist

    NASA Goddard Institute for Space Studies, New York  
    1999 - 2013

    Research Scientist

    Department of Applied Physics, Columbia University, NASA Goddard Institute for Space Studies, New York  
    1994 - 1999

    Associate Research Scientist

    Department of Applied Physics, Columbia University, NASA Goddard Institute for Space Studies, New York  
    1992 - 1994

    Postdoctoral Fellow

    Columbia University, NASA Goddard Institute for Space Studies, New York  

    Teaching Experience

    • 2014-present, Adjunct Professor, Columbia University Department of Applied Physics and Applied Math
    • 1995-1997, Adjunct Associate Professor, City University of New York
    • 1993-2002, Instructor, NASA/GISS Institute on Climate and Planets
    • 1991, Instructor, Barnard College STEP (Science and Technology Education) Program

    Education

    • Ph.D. Columbia University, 1992 — Atmospheric Sciences-Clouds and Radiation, Climate Change
    • M.S. University of Miami, 1987 — Meteorology-Tropical Meteorology, Air-Sea Interaction
    • B.S. Aristotle University of Thessaloniki, Greece, 1983 — Physics

    Professional Service

    • Coordinator, WGCM Cloud Feedback Model Intercomparison Project (CFMIP)
    • Member, Executive Board, Infrastructure for the European Network for Earth System Modeling (IS-ENES)
    • Author, Intergovernmental Panel for Climate Change (IPCC) Fourth Assessment Report
    • Member, EU Cloud Intercomparison, Process Study and Evaluation Project (EUCLIPSE) Science Team
    • Chair, GEWEX Cloud Systems Study Working Group on Midlatitude Layered Clouds
    • Member, GEWEX Cloud Systems Study Science Steering Group
    • Member, Department of Energy Atmospheric Radiation Measuring Program Science Team
    • Member, NASA Modeling and Analysis Project Science Team
    • US National Reviewer, IPCC Third Assessment Report
    • Reviewer, NOAA, NASA, NSF, and EU proposals
    • Reviewer, Nature, Journal of Geophysical Research-Atmospheres, Journal of Climate, Journal of the Atmospheric Sciences, Monthly Weather Review, Geophysical Resaarch Letters

    Awards

    • 2004 American Geophysical Union (AGU) Charles Falkenberg Award
    • 2001 NASA/GISS Popular Science Article Award
    • 1993 NASA/GISS Publication of the Year Award

    Grants

    Constraining the climate sensitivity of the GISS and GMAO models using process based eevaluation methods, NASA Modeling and Analysis (MAP) Program
      ; P.I.
    Advancing clouds lifecycle representation in numerical models using innovative analysis tools and models that bridge ARM observations and models over a breadth of scales, DOE Atmospheric Science Research (ARM) Program
      ; P.I.

    Publications

    Refereed

    Grise, K. M., L. M. Polvani, G. Tselioudis, Y. Wu, and M. D. Zelinka. 2013. "The ozone hole indirect effect: Cloud-radiative anomalies accompanying the poleward shift of the eddy-driven jet in the Southern Hemisphere." Geophys. Res. Lett., 40 (14): 3688-3692 [10.1002/grl.50675]

    Tselioudis, G., W. Rossow, Y.-C. Zhang, and D. Konsta. 2013. "Global Weather States and Their Properties from Passive and Active Satellite Cloud Retrievals." J. Climate, 26 (19): 7734-7746 [10.1175/JCLI-D-13-00024.1]

    Tselioudis, G., C. Douvis, and C. Zerefos. 2012. "Does dynamical downscaling introduce novel information in climate model simulations of precipitation change over a complex topography region?" Int. J. Climatol., 32 (10): 1572-1578 [10.1002/joc.2360]

    Romanski, J., A. Romanou, M. Bauer, and G. Tselioudis. 2012. "Atmospheric forcing of the Eastern Mediterranean Transient by midlatitude cyclones." Geophysical Research Letters, 39 (3): L03703 [10.1029/2011GL050298]

    Bender, F. A., V. Ramanathan, and G. Tselioudis. 2012. "Changes in extratropical storm track cloudiness 1983–2008: observational support for a poleward shift." Clim Dyn, 38 (9-10): 2037-2053 [10.1007/s00382-011-1065-6]

    Tselioudis, G., and W. B. Rossow. 2011. "Time Scales of Variability of the Tropical Atmosphere Derived from Cloud-Defined Weather States." J Climate, 24 (3): 602-608 [10.1175/2010JCLI3574.1]

    Philandras, C. M., P. T. Nastos, J. Kapsomenakis, et al. K. C. Douvis, G. Tselioudis, and C. S. Zerefos. 2011. "Long term precipitation trends and variability within the Mediterranean region." Natural Hazards and Earth System Science, 11 (12): 3235-3250 [10.5194/nhess-11-3235-2011]

    Haynes, J. M., C. Jakob, W. B. Rossow, G. Tselioudis, and J. Brown. 2011. "Major Characteristics of Southern Ocean Cloud Regimes and Their Effects on the Energy Budget." J. Climate, 24 (19): 5061-5080 [10.1175/2011JCLI4052.1]

    Romanou, A., G. Tselioudis, C. Zerefos, et al. C. A. Clayson, J. A. Curry, and A. Andersson. 2010. "Evaporation–Precipitation Variability over the Mediterranean and the Black Seas from Satellite and Reanalysis Estimates." J. Climate, 23 (19): 5268-5287 [10.1175/2010JCLI3525.1]

    Tselioudis, G., E. Tromeur, W. B. Rossow, and C. S. Zerefos. 2010. "Decadal changes in tropical convection suggest effects on stratospheric water vapor." Geophys Res Lett, 37 (14): L14806 [10.1029/2010GL044092]

    Saad-Lessler, J., and G. Tselioudis. 2009. "Storms, climate change, and the US economy: A national analysis." Reg Sector Econ Stud, 9 (1): 1.

    Zerefos, C. S., K. Eleftheratos, C. Meleti, et al. S. Kazadzis, A. Romanou, C. M. Ichoku, G. Tselioudis, and A. Bais. 2009. "Solar dimming and brightening over Thessaloniki, Greece, and Beijing, China." Tellus B, 61 (4): 657-665 [10.1111/j.1600-0889.2009.00425.x]

    Zerefos, C. S., K. Eleftheratos, P. Zanis, D. S. Balis, and G. Tselioudis. 2007. "Search for Man-Made Cirrus Contrails over Southeast Asia." Terrestrial, Atmospheric and Oceanic Sciences, 18 (3): 459 [10.3319/TAO.2007.18.3.459(EA)]

    Williams, K. D., and G. Tselioudis. 2007. "GCM intercomparison of global cloud regimes: present-day evaluation and climate change response." Clim Dyn, 29 (2-3): 231-250 [10.1007/s00382-007-0232-2]

    Tselioudis, G., and P. Kollias. 2007. "Evaluation of ECMWF cloud type simulations at the ARM Southern Great Plains site using a new cloud type climatology." Geophys Res Lett, 34 (3): L03803 [10.1029/2006GL027314]

    Kollias, P., G. Tselioudis, and B. A. Albrecht. 2007. "Cloud climatology at the Southern Great Plains and the layer structure, drizzle, and atmospheric modes of continental stratus." J. Geophys. Res., 112 (D9): D09116 [10.1029/2006JD007307]

    Eleftheratos, K., C. S. Zerefos, P. Zanis, et al. D. S. Balis, G. Tselioudis, K. Gierens, and R. Sausen. 2007. "A study on natural and manmade global interannual fluctuations of cirrus cloud cover for the period 1984-2004." Atmos Chem Phys, 7: 2631-2642 [10.5194/acp-7-2631-2007]

    Tselioudis, G., and W. B. Rossow. 2006. "Climate feedback implied by observed radiation and precipitation changes with midlatitude storm strength and frequency." Geophysical Research Letters, 33 (2): L02704 [10.1029/2005GL024513]

    Bony, S., R. Colman, V. M. Kattsov, et al. R. P. Allan, C. S. Bretherton, J. Dufresne, A. Hall, S. Hallegatte, M. M. Holland, W. Ingram, D. A. Randall, D. J. Soden, G. Tselioudis, and M. J. Webb. 2006. "How Well Do We Understand and Evaluate Climate Change Feedback Processes?" J. Climate, 19 (15): 3445-3482 [10.1175/JCLI3819.1]

    Rossow, W. B., G. Tselioudis, A. Polak, and C. Jakob. 2005. "Tropical climate described as a distribution of weather states indicated by distinct mesoscale cloud property mixtures." Geophysical Research Letters, 32 (21): L21812 [10.1029/2005GL024584]

    Jakob, C., G. Tselioudis, and T. Hume. 2005. "The Radiative, Cloud, and Thermodynamic Properties of the Major Tropical Western Pacific Cloud Regimes." J Climate, 18 (8): 1203-1215 [10.1175/JCLI3326.1]

    Tselioudis, G., W. B. Rossow, A. N. Gentilcore, and J. Katzfey. 2004. "The Data Integration for Model Evaluation Web Site: A One-Stop Shop for Model Evaluation." Bulletin of the American Meteorological Society, 85 (6): 830-835 [10.1175/BAMS-85-6-830]

    Zerefos, C. S., K. Eleftheratos, D. S. Balis, et al. P. Zanis, G. Tselioudis, and C. Meleti. 2003. "Evidence of impact of aviation on cirrus cloud formation." Atmos. Chem. Phys., 3 (5): 1633-1644 [10.5194/acp-3-1633-2003]

    Randall, D., S. Krueger, C. Bretherton, et al. J. Curry, M. Moncireff, B. Ryan, D. Starr, M. Miller, W. Rossow, G. Tselioudis, and B. Wielicki. 2003. "Confronting Models with Data: The GEWEX Cloud Systems Study." Bull Amer Meteorol Soc, 84 (4): 455-469 [10.1175/BAMS-84-4-455]

    Jakob, C., and G. Tselioudis. 2003. "Objective identification of cloud regimes in the Tropical Western Pacific." Geophys Res Lett, 30 (21): 2082 [10.1029/2003GL018367]

    Tselioudis, G., and C. Jakob. 2002. "Evaluation of midlatitude cloud properties in a weather and a climate model: Dependence on dynamic regime and spatial resolution." J Geophys Res, 107 (D24): 4781 [10.1029/2002JD002259]

    Menon, S., A. D. Del Genio, D. Koch, and G. Tselioudis. 2002. "GCM simulations of the aerosol indirect effect: Sensitivity to cloud parameterization and aerosol burden." J Atmos Sci, 59: 692-713.

    Tselioudis, G., Y. Zhang, and W. R. Rossow. 2000. "Cloud and radiation variations associated with northern midlatitude low and high sea level pressure regimes." J Climate, 13 (2): 312-327 [10.1175/1520-0442(2000)013<0312:CARVAW>2.0.CO;2]

    Ryan, B. F., J. J. Katzfey, D. J. Abbs, et al. C. Jakob, U. Lohmann, B. Rockel, L. D. Rotstayn, R. E. Stewart, K. K. Szeto, G. Tselioudis, and M. K. Yau. 2000. "Simulations of a cold front by cloud-resolving, limited-area, and large-scale models, and a model evaluation using in situ and satellite observations." M Weather Rev, 128: 3218-3235.

    Lohmann, U., G. Tselioudis, and C. Tyler. 2000. "Why is the cloud albedo - Particle size relationship different in optically thick and optically thin clouds?" Geophys Res Lett, 27 (8): 1099-1102 [10.1029/1999GL011098]

    Parikh, J. A., J. S. DaPonte, J. N. Vitale, and G. Tselioudis. 1999. "An evolutionary system for recognition and tracking of synoptic-scale storm systems." Pattern Recogn Lett, 20 (11-13): 1389-1396 [10.1016/S0167-8655(99)00110-5]

    Tselioudis, G., A. D. Del Genio, R. Kovari, R. Kovari, and M. S. Yao. 1998. "Temperature dependence of low cloud optical thickness in the GISS GCM: Contributing mechanisms and climate implications." J Climate, 11: 3268-3281.

    Parikh, J. A., J. S. DaPonte, J. N. Vitale, and G. Tselioudis. 1997. "Comparison of genetic algorithm systems with neural network and statistical techniques for analysis of cloud structures in midlatitude storm systems." Pattern Recogn Lett, 18 (11-13): 1347-1351 [10.1016/S0167-8655(97)00115-3]

    Tselioudis, G., and W. B. Rossow. 1994. "Global, multiyear variations of optical thickness with temperature in low and cirrus clouds." Geophys Res Lett, 21 (20): 2211-2214 [10.1029/94GL02004]

    Tselioudis, G., A. A. Lacis, D. Rind, and W. B. Rossow. 1993. "Potential effects of cloud optical thickness on climate warming." Nature, 366 (6456): 670-672 [10.1038/366670a0]

    Tselioudis, G., W. B. Rossow, and D. Rind. 1992. "Global patterns of cloud optical thickness variation with temperature." J Climate, 5: 1484-1495.

    Publications

    Refereed

    Grise, K. M., L. M. Polvani, G. Tselioudis, Y. Wu, and M. D. Zelinka. 2013. "The ozone hole indirect effect: Cloud-radiative anomalies accompanying the poleward shift of the eddy-driven jet in the Southern Hemisphere." Geophys. Res. Lett. 40 (14): 3688-3692 [10.1002/grl.50675]

    Tselioudis, G., W. Rossow, Y.-C. Zhang, and D. Konsta. 2013. "Global Weather States and Their Properties from Passive and Active Satellite Cloud Retrievals." J. Climate 26 (19): 7734-7746 [10.1175/JCLI-D-13-00024.1]

    Tselioudis, G., C. Douvis, and C. Zerefos. 2012. "Does dynamical downscaling introduce novel information in climate model simulations of precipitation change over a complex topography region?" Int. J. Climatol. 32 (10): 1572-1578 [10.1002/joc.2360]

    Romanski, J., A. Romanou, M. Bauer, and G. Tselioudis. 2012. "Atmospheric forcing of the Eastern Mediterranean Transient by midlatitude cyclones." Geophysical Research Letters 39 (3): L03703 [10.1029/2011GL050298]

    Bender, F. A., V. Ramanathan, and G. Tselioudis. 2012. "Changes in extratropical storm track cloudiness 1983–2008: observational support for a poleward shift." Clim Dyn 38 (9-10): 2037-2053 [10.1007/s00382-011-1065-6]

    Tselioudis, G., and W. B. Rossow. 2011. "Time Scales of Variability of the Tropical Atmosphere Derived from Cloud-Defined Weather States." J Climate 24 (3): 602-608 [10.1175/2010JCLI3574.1]

    Philandras, C. M., P. T. Nastos, J. Kapsomenakis, et al. K. C. Douvis, G. Tselioudis, and C. S. Zerefos. 2011. "Long term precipitation trends and variability within the Mediterranean region." Natural Hazards and Earth System Science 11 (12): 3235-3250 [10.5194/nhess-11-3235-2011]

    Haynes, J. M., C. Jakob, W. B. Rossow, G. Tselioudis, and J. Brown. 2011. "Major Characteristics of Southern Ocean Cloud Regimes and Their Effects on the Energy Budget." J. Climate 24 (19): 5061-5080 [10.1175/2011JCLI4052.1]

    Romanou, A., G. Tselioudis, C. Zerefos, et al. C. A. Clayson, J. A. Curry, and A. Andersson. 2010. "Evaporation–Precipitation Variability over the Mediterranean and the Black Seas from Satellite and Reanalysis Estimates." J. Climate 23 (19): 5268-5287 [10.1175/2010JCLI3525.1]

    Tselioudis, G., E. Tromeur, W. B. Rossow, and C. S. Zerefos. 2010. "Decadal changes in tropical convection suggest effects on stratospheric water vapor." Geophys Res Lett 37 (14): L14806 [10.1029/2010GL044092]

    Saad-Lessler, J., and G. Tselioudis. 2009. "Storms, climate change, and the US economy: A national analysis." Reg Sector Econ Stud 9 (1): 1

    Zerefos, C. S., K. Eleftheratos, C. Meleti, et al. S. Kazadzis, A. Romanou, C. M. Ichoku, G. Tselioudis, and A. Bais. 2009. "Solar dimming and brightening over Thessaloniki, Greece, and Beijing, China." Tellus B 61 (4): 657-665 [10.1111/j.1600-0889.2009.00425.x]

    Zerefos, C. S., K. Eleftheratos, P. Zanis, D. S. Balis, and G. Tselioudis. 2007. "Search for Man-Made Cirrus Contrails over Southeast Asia." Terrestrial, Atmospheric and Oceanic Sciences 18 (3): 459 [10.3319/TAO.2007.18.3.459(EA)]

    Williams, K. D., and G. Tselioudis. 2007. "GCM intercomparison of global cloud regimes: present-day evaluation and climate change response." Clim Dyn 29 (2-3): 231-250 [10.1007/s00382-007-0232-2]

    Tselioudis, G., and P. Kollias. 2007. "Evaluation of ECMWF cloud type simulations at the ARM Southern Great Plains site using a new cloud type climatology." Geophys Res Lett 34 (3): L03803 [10.1029/2006GL027314]

    Kollias, P., G. Tselioudis, and B. A. Albrecht. 2007. "Cloud climatology at the Southern Great Plains and the layer structure, drizzle, and atmospheric modes of continental stratus." J. Geophys. Res. 112 (D9): D09116 [10.1029/2006JD007307]

    Eleftheratos, K., C. S. Zerefos, P. Zanis, et al. D. S. Balis, G. Tselioudis, K. Gierens, and R. Sausen. 2007. "A study on natural and manmade global interannual fluctuations of cirrus cloud cover for the period 1984-2004." Atmos Chem Phys 7 2631-2642 [10.5194/acp-7-2631-2007]

    Tselioudis, G., and W. B. Rossow. 2006. "Climate feedback implied by observed radiation and precipitation changes with midlatitude storm strength and frequency." Geophysical Research Letters 33 (2): L02704 [10.1029/2005GL024513]

    Bony, S., R. Colman, V. M. Kattsov, et al. R. P. Allan, C. S. Bretherton, J. Dufresne, A. Hall, S. Hallegatte, M. M. Holland, W. Ingram, D. A. Randall, D. J. Soden, G. Tselioudis, and M. J. Webb. 2006. "How Well Do We Understand and Evaluate Climate Change Feedback Processes?" J. Climate 19 (15): 3445-3482 [10.1175/JCLI3819.1]

    Rossow, W. B., G. Tselioudis, A. Polak, and C. Jakob. 2005. "Tropical climate described as a distribution of weather states indicated by distinct mesoscale cloud property mixtures." Geophysical Research Letters 32 (21): L21812 [10.1029/2005GL024584]

    Jakob, C., G. Tselioudis, and T. Hume. 2005. "The Radiative, Cloud, and Thermodynamic Properties of the Major Tropical Western Pacific Cloud Regimes." J Climate 18 (8): 1203-1215 [10.1175/JCLI3326.1]

    Tselioudis, G., W. B. Rossow, A. N. Gentilcore, and J. Katzfey. 2004. "The Data Integration for Model Evaluation Web Site: A One-Stop Shop for Model Evaluation." Bulletin of the American Meteorological Society 85 (6): 830-835 [10.1175/BAMS-85-6-830]

    Zerefos, C. S., K. Eleftheratos, D. S. Balis, et al. P. Zanis, G. Tselioudis, and C. Meleti. 2003. "Evidence of impact of aviation on cirrus cloud formation." Atmos. Chem. Phys. 3 (5): 1633-1644 [10.5194/acp-3-1633-2003]

    Randall, D., S. Krueger, C. Bretherton, et al. J. Curry, M. Moncireff, B. Ryan, D. Starr, M. Miller, W. Rossow, G. Tselioudis, and B. Wielicki. 2003. "Confronting Models with Data: The GEWEX Cloud Systems Study." Bull Amer Meteorol Soc 84 (4): 455-469 [10.1175/BAMS-84-4-455]

    Jakob, C., and G. Tselioudis. 2003. "Objective identification of cloud regimes in the Tropical Western Pacific." Geophys Res Lett 30 (21): 2082 [10.1029/2003GL018367]

    Tselioudis, G., and C. Jakob. 2002. "Evaluation of midlatitude cloud properties in a weather and a climate model: Dependence on dynamic regime and spatial resolution." J Geophys Res 107 (D24): 4781 [10.1029/2002JD002259]

    Menon, S., A. D. Del Genio, D. Koch, and G. Tselioudis. 2002. "GCM simulations of the aerosol indirect effect: Sensitivity to cloud parameterization and aerosol burden." J Atmos Sci 59 692-713.

    Tselioudis, G., Y. Zhang, and W. R. Rossow. 2000. "Cloud and radiation variations associated with northern midlatitude low and high sea level pressure regimes." J Climate 13 (2): 312-327 [10.1175/1520-0442(2000)013<0312:CARVAW>2.0.CO;2]

    Ryan, B. F., J. J. Katzfey, D. J. Abbs, et al. C. Jakob, U. Lohmann, B. Rockel, L. D. Rotstayn, R. E. Stewart, K. K. Szeto, G. Tselioudis, and M. K. Yau. 2000. "Simulations of a cold front by cloud-resolving, limited-area, and large-scale models, and a model evaluation using in situ and satellite observations." M Weather Rev 128 3218-3235.

    Lohmann, U., G. Tselioudis, and C. Tyler. 2000. "Why is the cloud albedo - Particle size relationship different in optically thick and optically thin clouds?" Geophys Res Lett 27 (8): 1099-1102 [10.1029/1999GL011098]

    Parikh, J. A., J. S. DaPonte, J. N. Vitale, and G. Tselioudis. 1999. "An evolutionary system for recognition and tracking of synoptic-scale storm systems." Pattern Recogn Lett 20 (11-13): 1389-1396 [10.1016/S0167-8655(99)00110-5]

    Tselioudis, G., A. D. Del Genio, R. Kovari, R. Kovari, and M. S. Yao. 1998. "Temperature dependence of low cloud optical thickness in the GISS GCM: Contributing mechanisms and climate implications." J Climate 11 3268-3281

    Parikh, J. A., J. S. DaPonte, J. N. Vitale, and G. Tselioudis. 1997. "Comparison of genetic algorithm systems with neural network and statistical techniques for analysis of cloud structures in midlatitude storm systems." Pattern Recogn Lett 18 (11-13): 1347-1351 [10.1016/S0167-8655(97)00115-3]

    Tselioudis, G., and W. B. Rossow. 1994. "Global, multiyear variations of optical thickness with temperature in low and cirrus clouds." Geophys Res Lett 21 (20): 2211-2214 [10.1029/94GL02004]

    Tselioudis, G., A. A. Lacis, D. Rind, and W. B. Rossow. 1993. "Potential effects of cloud optical thickness on climate warming." Nature 366 (6456): 670-672 [10.1038/366670a0]

    Tselioudis, G., W. B. Rossow, and D. Rind. 1992. "Global patterns of cloud optical thickness variation with temperature." J Climate 5 1484-1495

                                                                                                                                                                                            
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