George Tselioudis

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 - Awarded:

Dates: -

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 - Awarded:

Dates: -

Publications

Refereed

2024. "Contributions From Cloud Morphological Changes to the Interannual Shortwave Cloud Feedback Based on MODIS and ISCCP Satellite Observations." Journal of Geophysical Research: Atmospheres 129 (8): [10.1029/2023jd040540] [Journal Article/Letter]

2023. "On the impact of a dry intrusion driving cloud-regime transitions in a midlatitude cold-air outbreak." Journal of the Atmospheric Sciences [10.1175/jas-d-23-0040.1] [Journal Article/Letter]

2023. "Global warming in the pipeline." Oxford Open Climate Change 3 (1): [10.1093/oxfclm/kgad008] [Journal Article/Letter]

2022. "Use of Satellite Observations in Climate Model Evaluation of Clouds: A Time History Based on the NASA/GISS MODEL." Studies of Cloud, Convection and Precipitation Processes Using Satellite Observations 247-262 [10.1142/9789811256912_0013] [Article in Book]

2022. "Studies of Cloud, Convection and Precipitation Processes Using Satellite Observations." Lectures in Climate Change [10.1142/12862] [Book]

2022. "Detailing cloud property feedbacks with a regime-based decomposition." Climate Dynamics [10.1007/s00382-022-06488-7] [Journal Article/Letter]

2022. "Model evaluation of short-lived climate forcers for the Arctic Monitoring and Assessment Programme: a multi-species, multi-model study." Atmospheric Chemistry and Physics 22 (9): 5775-5828 [10.5194/acp-22-5775-2022] [Journal Article/Letter]

2022. "Future Climate Change under SSP Emission Scenarios with GISS‐E2.1." Journal of Advances in Modeling Earth Systems [10.1029/2021ms002871] [Journal Article/Letter]

2021. "Improved representation of atmospheric dynamics in CMIP6 models removes climate sensitivity dependence on Hadley cell climatological extent." Atmospheric Science Letters [10.1002/asl.1073] [Journal Article/Letter]

2021. "Evaluation of Clouds, Radiation, and Precipitation in CMIP6 Models Using Global Weather States Derived from ISCCP-H Cloud Property Data." Journal of Climate 34 (17): 7311–7324 [10.1175/jcli-d-21-0076.1] [Journal Article/Letter]

2021. "An Overview of Atmospheric Features Over the Western North Atlantic Ocean and North American East Coast—Part 2: Circulation, Boundary Layer, and Clouds." Journal of Geophysical Research: Atmospheres 126 (6): [10.1029/2020jd033423] [Journal Article/Letter]

2021. "CMIP6 Historical Simulations (1850‐2014) with GISS‐E2.1." Journal of Advances in Modeling Earth Systems 13 e2019MS002034 [10.1029/2019ms002034] [Journal Article/Letter]

2020. "Midlatitude Cloud Systems." Clouds and Climate 279-296 [10.1017/9781107447738.010] [Article in Book]

2020. "GISS‐E2.1: Configurations and Climatology." Journal of Advances in Modeling Earth Systems 12 (8): [10.1029/2019ms002025] [Journal Article/Letter]

2017. "Use of Cloud Radar Doppler Spectra to Evaluate Stratocumulus Drizzle Size Distributions in Large-Eddy Simulations with Size-Resolved Microphysics." Journal of Applied Meteorology and Climatology 56 (12): 3263-3283 [10.1175/jamc-d-17-0100.1] [Journal Article/Letter]

2017. "CMIP5 models' shortwave cloud radiative response and climate sensitivity linked to the climatological Hadley cell extent." Geophysical Research Letters 44 (11): 5739-5748 [10.1002/2017gl073151] [Journal Article/Letter]

2016. "The ‘Storm Curtain’ Effect: Poleward Shift of Clouds, Their Radiative Effects, and the Role of Midlatitude Storms." Springer Atmospheric Sciences 725-731 [10.1007/978-3-319-35095-0_104] [Article in Book]

2015. "Increases in tropical rainfall driven by changes in frequency of organized deep convection." Nature 519 451-454 [10.1038/nature14339] [Journal Article/Letter]

2015. "Clouds, aerosol, and precipitation in the marine boundary layer: An ARM Mobile Facility deployment." Bull. Amer. Meteorol. Soc. 96 (3): 419-440 [doi:10.1175/BAMS-D-13-00180.1] [Journal Article/Letter]

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] [Journal Article/Letter]

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] [Journal Article/Letter]

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] [Journal Article/Letter]

2012. "Atmospheric forcing of the Eastern Mediterranean Transient by midlatitude cyclones." Geophysical Research Letters 39 (3): L03703 [10.1029/2011GL050298] [Journal Article/Letter]

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] [Journal Article/Letter]

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] [Journal Article/Letter]

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] [Journal Article/Letter]

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] [Journal Article/Letter]

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] [Journal Article/Letter]

2010. "Decadal changes in tropical convection suggest effects on stratospheric water vapor." Geophys Res Lett 37 (14): L14806 [10.1029/2010GL044092] [Journal Article/Letter]

2009. "Storms, climate change, and the US economy: A national analysis." Reg Sector Econ Stud 9 (1): 1 [Journal Article/Letter]

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] [Journal Article/Letter]

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)] [Journal Article/Letter]

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] [Journal Article/Letter]

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] [Journal Article/Letter]

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] [Journal Article/Letter]

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] [Journal Article/Letter]

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] [Journal Article/Letter]

2006. "How Well Do We Understand and Evaluate Climate Change Feedback Processes?." J. Climate 19 (15): 3445-3482 [10.1175/JCLI3819.1] [Journal Article/Letter]

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] [Journal Article/Letter]

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] [Journal Article/Letter]

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] [Journal Article/Letter]

2003. "Evidence of impact of aviation on cirrus cloud formation." Atmos. Chem. Phys. 3 (5): 1633-1644 [10.5194/acp-3-1633-2003] [Journal Article/Letter]

2003. "Confronting Models with Data: The GEWEX Cloud Systems Study." Bull Amer Meteorol Soc 84 (4): 455-469 [10.1175/BAMS-84-4-455] [Journal Article/Letter]

2003. "Objective identification of cloud regimes in the Tropical Western Pacific." Geophys Res Lett 30 (21): 2082 [10.1029/2003GL018367] [Journal Article/Letter]

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] [Journal Article/Letter]

2002. "GCM simulations of the aerosol indirect effect: Sensitivity to cloud parameterization and aerosol burden." J Atmos Sci 59 692-713. [Journal Article/Letter]

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] [Journal Article/Letter]

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. [Journal Article/Letter]

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] [Journal Article/Letter]

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] [Journal Article/Letter]

1998. "Temperature dependence of low cloud optical thickness in the GISS GCM: Contributing mechanisms and climate implications." J Climate 11 3268-3281 [Journal Article/Letter]

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] [Journal Article/Letter]

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

1993. "Potential effects of cloud optical thickness on climate warming." Nature 366 (6456): 670-672 [10.1038/366670a0] [Journal Article/Letter]

1992. "Global patterns of cloud optical thickness variation with temperature." J Climate 5 1484-1495 [Journal Article/Letter]

Non-Refereed

2015. "The GEWEX Process Evaluation Study: GEWEX-PROES." GEWEX News 27 (4): 4-5 [Newsletter]

George Tselioudis

Positions/Employment

Research Physical Scientist

Research Scientist

Associate Research Scientist

Postdoctoral Fellow

Teaching Experience