Konstantinos Tsigaridis

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Konstantinos Tsigaridis

  • ASSOC. RESEARCH SCIENTIST
  • 212.678.5668
  • NASA/GSFC
  • Mail Code: 611
  • New York , NY 00125
  • Employer: COLUMBIA UNIVERSITY
  • Brief Bio

    My research interests aim in understanding the role aerosols play in the Earth system, by studying the interactions and feedbacks between the atmosphere, the terrestrial biosphere, the ocean, and climate.

    I am currently working on a variety of topics related to aerosol research and their sources, sinks, and interactions with climate at various levels of complexity. My studies range from detailed aerosol processes such as the formation of secondary organic aerosols (SOA), to centennial time scale climate variability related to natural variability and external forcings. While my main expertise is organic aerosols, I am also experienced in working with all other aerosol types as well as tropospheric gas-phase and heterogeneous chemistry. I have extensively used both box models that I developed, and 3-dimensional global models: the TM3 chemistry/transport model, the IPSL general circulation model LMDz-INCA, and the GISS modelE Earth System Model (ESM), for which I had contributed to the IPCC AR5 model development. Currently I am working with the next generation of the NASA GISS ESM, the GISS ModelE2, which is part of CMIP5.

    Topics that I either work on, or plan to work in the future include studies on:
    • missing aerosol species and sources, such as the primary oceanic aerosols and their importance on the remote marine atmosphere, the in-cloud and aerosol water aqueous formation of organic aerosols that can lead to brown carbon formation, the primary terrestrial biological particles, and the organic nitrogen
    • missing aerosol parameterizations, such as the effect of aerosol mixing on cloud condensation nuclei and aerosol absorption, the semi-volatility of primary organic aerosols, the importance of in-canopy processes on natural terrestrial aerosol and aerosol precursor sources, and the mineral dust iron solubility and bioavailability
    • the change of aerosol burden and its spatiotemporal distribution, especially with regard to its role and importance on gas-phase chemistry via photolysis rates changes and heterogeneous reactions in the atmosphere, as well as their effect on key gas-phase species like ozone
    • the physical and optical properties of aerosols, which affect aerosol transport, lifetime, and light scattering and absorption, with the latter being very sensitive to the vertical distribution of absorbing aerosols
    • aerosol-cloud interactions, which include cloud activation, the aerosol indirect effect and the impact of clouds on aerosol removal
    • changes on climate and feedbacks related with all these topics

    In order to understand the climate system as a whole, improve the aerosol representation in the GISS ModelE2 and contribute to future IPCC climate change assessments and CMIP activities, I am also interested in understanding the importance of natural and anthropogenic aerosol changes in the atmosphere on the terrestrial biosphere, the ocean and climate. The climate feedbacks involved with these changes, which are key in understanding the climate system as a whole, include:

    the importance of aerosol absorption on climate
    the impact of aerosol deposition which affects biology and, hence, emissions of aerosols and aerosol precursors via organic nitrogen, organic phosphorus and iron fertilization
    the importance of land use and land use changes on natural and anthropogenic aerosol sources
    the SOA sources and impact on climate, with special attention on the impact human activities have on natural SOA formation

    In order to quantitatively answer such questions I perform simulations of the past, present and future atmospheres, and make comparisons with measurements and remote sensing data, all of which help understand, evaluate and improve the model’s parameterizations and performance, and our understanding of the Earth system.

    Research Interests

    Earth system modeling


    Preindustrial, present and future atmospheric composition


    Paleoclimate atmospheric composition


    Aerosol direct and indirect effects


    Aerosol-climate interactions and feedbacks


    Atmosphere-terrestrial biosphere interactions and feedbacks


    Atmosphere-ocean interactions and feedbacks


    Education

    • Sep 1993 – Feb 1998: University Degree in Chemistry, Department of Chemistry, University of Crete.
    • Jun 1996 – Jul 1997: Diploma Thesis in Environmental Chemical Processes Laboratory (ECPL), Department of Chemistry, University of Crete. Title: Study of the anionic composition and its seasonal variation in rainwater of remote marine areas. Supervisor: N. Mihalopoulos.
    • Feb 1998 – Dec 2000: Master Thesis in Environmental Science and Engineering, Department of Chemistry, University of Crete. Title: Arithmetic simulation of the impact of biogenic hydrocarbons on the chemical composition of the atmosphere: The forest of Pertouli, Trikala, Greece. Supervisor: M. Kanakidou.
    • Dec 2000 – Dec 2003: Ph.D. in Environmental Science and Engineering, Department of Chemistry, University of Crete. Title: Simulation of the effect of organic aerosols on the atmosphere and its energy balance with the use of a 3D model. Supervisor: M. Kanakidou.
    • Mar 2004 – Dec 2004: Military service in the Greek Navy. Rank: petty officer.
    Languages: Greek (mother tongue), English (fluent), French (basic).

    Positions/Employment

    12 / 2003 - 12 / 2005

    Postdoctoral Fellow

    Department of Chemistry, University of Crete, Environmental Chemical Processes Laboratory
    1 / 2006 - 2 / 2008

    Postdoctoral fellow

    Laboratory CEA-CNRS-UVSQ, LSCE/IPSL
    3 / 2008 - 2 / 2010

    Postdoctoral fellow

    Oak Ridge Associated Universities, NASA Goddard Institute for Space Studies NPP fellow
    3 / 2010 - Present

    Associate research scientist

    Columbia University , Center for Climate Systems Research, Columbia University and NASA Goddard Institute for Space Studies

    Teaching Experience

    Teaching assistant
    • Feb. 1998 – Jun. 1998: Analytical Chemistry II Laboratory, Department of Chemistry, University of Crete.
    • Feb. 1998 – Jun. 1998: Computational Environmental Chemistry course, Department of Chemistry, University of Crete.
    • Oct. 1998 – Jan. 1999: General Chemistry I Laboratory, Department of Chemistry, University of Crete.
    • Feb. 1999 – Jun. 1999: Computational Environmental Chemistry course, Department of Chemistry, University of Crete.
    • Oct. 1999 – Jan. 2000: Computational Chemistry course, Department of Chemistry, University of Crete.
    Guest lecturer
    • Nov. 2010: Atmospheric Aerosols course, Department of Chemical Engineering, Columbia University.
    • Oct. 2011: Atmospheric Aerosols course, Department of Chemical Engineering, Columbia University.
    • Oct. 2011: Atmospheric Aerosols course, Department of Chemical Engineering, Columbia University.
    Master students
    • Kenneth Sinclair, Columbia University, Sep. 2011 – Sep. 2012.
    PhD students
    • Chloe Gao, Columbia University, Sep. 2013 – today.
    • Keren Mezuman, Columbia University, Sep. 2013 – today.

    Professional Societies

    American Geophysical Union (AGU) , 2008 - Present
    European Geophysical Union (EGU) , 2013 - Present

    Professional Service

    • Leader of the organic aerosol global modeling intercomparison exercise in the framework of AeroCom (http://aerocom.met.no).
    • Co-organizer of the international workshop entitled “Production mechanism, number concentration, size distribution, chemical composition, and optical properties of sea spray aerosols”, 4-6 June 2012, Raleigh, NC, USA.
    • Member of the scientific committee of the 12th International Conference on Meteorology, Climatology and Atmospheric Physics (COMECAP), 28-31 May 2014, Heraklion, Greece.
    • co-editor in Atmospheric Chemistry and Physics since 2013.
    • co-editor in Dataset Papers in Geosciences since 2012.
    • co-editor in International Journal of Atmospheric Sciences since 2012.

    Awards

    • 1998 – 2000: Master Thesis supported by the EPEAEK grant on Environmental Sciences and Engineering, University of Crete, Heraklion, Greece.
    • 2004 – 2005: Post-doctoral PYTHAGORAS II grant on “Study of the relative contribution of the natural variability and the anthropogenic influence on the levels and the climate role of aerosols and ozone over the East Mediterranean and on a global scale”, University of Crete, Heraklion, Greece.
    • 2008 – 2009: NASA Postdoctoral Program (NPP) fellowship, as a result of a successful proposal, NASA GISS, New York, USA.

    Publications

    Refereed

    Tsigaridis, K., N. Daskalakis, M. Kanakidou, et al. P. J. Adams, P. Artaxo, R. Bahadur, Y. Balkanski, S. E. Bauer, N. Bellouin, A. Benedetti, T. Bergman, T. K. Berntsen, J. P. Beukes, H. Bian, K. S. Carslaw, M. Chin, G. Curci, T. Diehl, R. C. Easter, S. J. Ghan, S. L. Gong, A. Hodzic, C. R. Hoyle, T. Iversen, S. Jathar, J. L. Jimenez, J. W. Kaiser, A. Kirkevåg, D. Koch, H. Kokkola, Y. H. Lee, G. Lin, X. Liu, G. Luo, X. Ma, G. W. Mann, N. Mihalopoulos, J.-J. Morcrette, J.-F. Müller, G. Myhre, S. Myriokefalitakis, S. Ng, D. O'Donnell, J. E. Penner, L. Pozzoli, K. J. Pringle, L. M. Russell, M. Schulz, J. Sciare, O. Seland, D. T. Shindell, S. Sillman, R. B. Skeie, D. Spracklen, T. Stavrakou, S. D. Steenrod, T. Takemura, P. Tiitta, S. Tilmes, H. Tost, T. van Noije, P. G. van Zyl, K. von Salzen, F. Yu, Z. Wang, Z. Wang, R. A. Zaveri, H. Zhang, K. Zhang, Q. Zhang, and X. Zhang. 2014. "The AeroCom evaluation and intercomparison of organic aerosol in global models." Atmos. Chem. Phys. 14 10845-10895 [doi:10.5194/acp-14-10845-2014]

    Trail, M., A. P. Tsimpidi, P. Liu, et al. K. Tsigaridis, J. Rudokas, P. Miller, A. Nenes, Y. Hu, and A. G. Russell. 2014. "Sensitivity of air quality to potential future climate change and emissions in the United States and major cities." Atmos. Environ. 94 552-563 [doi:10.1016/j.atmosenv.2014.05.079]

    Pan, X., M. Chin, R. Gautam, et al. H. Bian, D. Kim, P. R. Colarco, T. L. Diehl, T. Takemura, L. Pozzoli, K. Tsigaridis, S. E. Bauer, and N. Bellouin. 2014. "A multi-model evaluation of aerosols over South Asia: Common problems and possible causes." Atmos. Chem. Phys. Discuss. 14 (13): 19095-19147 [10.5194/acpd-14-19095-2014]

    Miller, R. L., G. A. Schmidt, L. Nazarenko, et al. N. L. Tausnev, S. E. Bauer, A. Del Genio, M. Kelley, K.-W. Lo, R. A. Ruedy, D. T. Shindell, I. Aleinov, M. P. Bauer, R. Bleck, V. M. Canuto, Y. Chen, Y. Cheng, T. L. Clune, G. S. Faluvegi, J. E. Hansen, R. J. Healy, N. Y. Kiang, D. Koch, A. A. Lacis, A. N. Legrande, J. Lerner, S. Menon, V. Oinas, C. Perez Garcia Pando, J. P. Perlwitz, M. J. Puma, D. Rind, A. Romanou, G. L. Russell, M. Sato, S. Sun, K. Tsigaridis, N. Unger, A. Voulgarakis, M.-S. Yao, and J. Zhang. 2014. "CMIP5 historical simulations (1850-2012) with GISS ModelE2." J. Adv. Model. Earth Syst. 6 (2): 441-477 [10.1002/2013MS000266]

    Kim, D., M. Chin, H. Yu, et al. T. Diehl, Q. Tan, R. A. Kahn, K. Tsigaridis, S. E. Bauer, T. Takemura, L. Pozzoli, N. Bellouin, M. Schulz, S. Peyridieu, A. Chedin, and B. Koffi. 2014. "Sources, sinks, and transatlantic transport of North African dust aerosol: A multimodel analysis and comparison with remote sensing data." J. Geophys. Res. Atmos. 119 6259-6277 [10.1002/2013JD021099]

    Mann, G. W., K. S. Carslaw, C. L. Reddington, et al. K. J. Pringle, M. Schulz, A. Asmi, D. V. Spracklen, D. A. Ridley, M. T. Woodhouse, L. A. Lee, K. Zhang, S. J. Ghan, R. C. Easter, X. Liu, P. Stier, Y. Lee, P. J. Adams, H. Tost, J. Lelieveld, S. E. Bauer, K. Tsigaridis, T. P. van Noije, A. Strunk, E. Vignati, N. Bellouin, M. Dalvi, C. E. Johnson, T. Bergman, H. Kokkola, K. von Salzen, F. Yu, G. Luo, A. Petzold, J. Heintzenberg, A. Clarke, J. A. Ogren, J. Gras, U. Baltensperger, U. Kaminski, S. G. Jennings, C. D. O'Dowd, R. M. Harrison, D. C. Beddows, M. Kulmala, Y. Viisanen, V. Ulevicius, N. Mihalopoulos, V. Zdimal, M. Fiebig, H.-C. Hansson, E. Swietlicki, and J. S. Henzig. 2014. "Intercomparison and evaluation of global aerosol microphysical properties among AeroCom models of a range of complexity." Atmos. Chem. Phys. 14 (9): 4679-4713 [10.5194/acp-14-4679-2014]

    Schmidt, G. A., M. Kelley, L. Nazarenko, et al. R. A. Ruedy, G. L. Russell, I. Aleinov, M. P. Bauer, S. E. Bauer, M. K. Bhat, R. Bleck, V. M. Canuto, Y. Chen, Y. Cheng, T. L. Clune, A. Del Genio, R. de Fainchtein, G. S. Faluvegi, J. E. Hansen, R. J. Healy, N. Y. Kiang, D. Koch, A. A. Lacis, A. N. Legrande, J. Lerner, K.-W. Lo, E. Matthews, S. Menon, R. L. Miller, V. Oinas, A. O. Oloso, J. P. Perlwitz, M. J. Puma, W. M. Putman, D. Rind, A. Romanou, M. Sato, D. T. Shindell, S. Sun, R. A. Syed, N. L. Tausnev, K. Tsigaridis, N. Unger, A. Voulgarakis, M.-S. Yao, and J. Zhang. 2014. "Configuration and assessment of the GISS ModelE2 contributions to the CMIP5 archive." J. Adv. Model. Earth Syst. 6 (1): 141-184 [10.1002/2013MS000265]

    Jiao, C., M. G. Flanner, Y. Balkanski, et al. S. E. Bauer, N. Bellouin, T. K. Berntsen, H. Bian, K. S. Carslaw, M. Chin, N. De Luca, T. Diehl, S. J. Ghan, T. Iversen, A. Kirkevag, D. Koch, X. Liu, G. W. Mann, J. E. Penner, G. Pitari, M. Schulz, O. Seland, R. B. Skeie, S. D. Steenrod, P. Stier, T. Takemura, K. Tsigaridis, T. van Noije, Y. Yun, and K. Zhang. 2014. "An AeroCom assessment of black carbon in Arctic snow and sea ice." Atmos. Chem. Phys. 14 (5): 2399-2417 [10.5194/acp-14-2399-2014]

    Bauer, S. E., A. Bausch, L. Nazarenko, et al. K. Tsigaridis, B. Xu, R. Edwards, M. Bisiaux, and J. McConnell. 2013. "Historical and future black carbon deposition on the three ice caps: Ice core measurements and model simulations from 1850 to 2100." J. Geophys. Res. Atmos. 118 (14): 7948-7961 [10.1002/jgrd.50612]

    Myhre, G., B. H. Samset, M. Schulz, et al. Y. Balkanski, S. E. Bauer, T. K. Berntsen, H. Bian, N. Bellouin, M. Chin, T. Diehl, R. C. Easter, J. Feichter, S. J. Ghan, D. Hauglustaine, T. Iversen, S. Kinne, A. Kirkevag, J.-F. Lamarque, G. Lin, X. Liu, M. T. Lund, G. Luo, X. Ma, T. van Noije, J. E. Penner, P. J. Rasch, A. Ruiz, O. Seland, R. B. Skeie, P. Stier, T. Takemura, K. Tsigaridis, P. Wang, Z. Wang, L. Xu, H. Yu, F. Yu, J.-H. Yoon, K. Zhang, H. Zhang, and C. Zhou. 2013. "Radiative forcing of the direct aerosol effect from AeroCom Phase II simulations." Atmos. Chem. Phys. 13 (4): 1853-1877 [10.5194/acp-13-1853-2013]

    Meskhidze, N., M. D. Petters, K. Tsigaridis, et al. T. Bates, C. ODowd, J. Reid, E. R. Lewis, B. Gantt, M. D. Anguelova, P. V. Bhave, J. Bird, A. H. Callaghan, D. Ceburnis, R. Chang, A. Clarke, G. de Leeuw, G. Deane, P. J. DeMott, S. Elliot, M.-C. Facchini, C. W. Fairall, L. Hawkins, Y. Hu, J. G. Hudson, M. S. Johnson, K. C. Kaku, W. C. Keene, D. J. Kieber, M. S. Long, M. Martensson, R. L. Modini, C. L. Osburn, K. A. Prather, A. Pszenny, M. Rinaldi, L. M. Russell, M. Salter, A. M. Sayer, A. Smirnov, S. R. Suda, T. D. Toth, D. R. Worsnop, A. Wozniak, and S. R. Zorn. 2013. "Production mechanisms, number concentration, size distribution, chemical composition, and optical properties of sea spray aerosols." Atmos. Sci. Lett. 14 (4): 207-213 [10.1002/asl2.441]

    Samset, B. H., G. Myhre, M. Schulz, et al. Y. Balkanski, S. Bauer, T. K. Berntsen, H. Bian, N. Bellouin, T. Diehl, R. C. Easter, S. J. Ghan, T. Iversen, S. Kinne, A. Kirkevag, J.-F. Lamarque, G. Lin, X. Liu, J. Penner, O. Seland, R. B. Skeie, P. Stier, T. Takemura, K. Tsigaridis, and K. Zhang. 2013. "Black carbon vertical profiles strongly affect its radiative forcing uncertainty." Atmos. Chem. Phys. 13 (5): 2423-2434 [10.5194/acp-13-2423-2013]

    Trail, M., A. P. Tsimpidi, P. Liu, et al. K. Tsigaridis, Y. Hu, A. Nenes, B. Stone, and A. G. Russell. 2013. "Potential impact of land use change on future regional climate in the Southeastern U.S.: Reforestation and crop land conversion." J. Geophys. Res. Atmos. 118 (20): 11,577-11,588 [10.1002/2013JD020356]

    Trail, M., A. P. Tsimpidi, P. Liu, et al. K. Tsigaridis, Y. Hu, A. Nenes, and A. G. Russell. 2013. "Downscaling a global climate model to simulate climate change over the US and the implication on regional and urban air quality." Geosci. Model Dev. 6 (5): 1429-1445 [10.5194/gmd-6-1429-2013]

    Tsigaridis, K., D. Koch, and S. Menon. 2013. "Uncertainties and importance of sea spray composition on aerosol direct and indirect effects." J. Geophys. Res. Atmos. 118 (1): 220-235 [10.1029/2012JD018165]

    Knobelspiesse, K. D., B. Cairns, M. I. Mishchenko, et al. J. Chowdhary, K. Tsigaridis, B. Van Diedenhoven, W. Martin, M. Ottaviani, and M. D. Alexandrov. 2012. "Analysis of fine-mode aerosol retrieval capabilities by different passive remote sensing instrument designs." Opt. Express 20 (19): 21,457-21,484 [10.1364/OE.20.021457]

    Kanakidou, M., R. A. Duce, J. M. Prospero, et al. A. R. Baker, C. Benitez-Nelson, F. J. Dentener, K. A. Hunter, P. S. Liss, N. Mahowald, G. S. Okin, M. Sarin, K. Tsigaridis, M. Uematsu, L. M. Zamora, and T. Zhu. 2012. "Atmospheric fluxes of organic N and P to the global ocean." Global Biogeochem. Cycles 26 (3): GB3026 [10.1029/2011GB004277]

    Rinaldi, M., S. Decesari, C. Carbone, et al. E. Finessi, S. Fuzzi, D. Ceburnis, C. D. O'Dowd, J. Sciare, J. P. Burrows, M. Vrekoussis, B. Ervens, K. Tsigaridis, and M. C. Facchini. 2011. "Evidence of a natural marine source of oxalic acid and a possible link to glyoxal." J. Geophys. Res. 116 (D16): D16204 [10.1029/2011JD015659]

    Myriokefalitakis, S., K. Tsigaridis, N. Mihalopoulos, et al. J. Sciare, A. Nenes, K. Kawamura, A. Segers, and M. Kanakidou. 2011. "In-cloud oxalate formation in the global troposphere: a 3-D modeling study." Atmos. Chem. Phys. 11 (12): 5761-5782 [10.5194/acp-11-5761-2011]

    O'Donnell, D., K. Tsigaridis, and J. Feichter. 2011. "Estimating the direct and indirect effects of secondary organic aerosols using ECHAM5-HAM." Atmos. Chem. Phys. 11 (16): 8635-8659 [10.5194/acp-11-8635-2011]

    Myriokefalitakis, S., E. Vignati, K. Tsigaridis, et al. C. Papadimas, J. Sciare, N. Mihalopoulos, M. C. Facchini, M. Rinaldi, F. J. Dentener, D. Ceburnis, N. Hatzianastasiou, C. D. O'Dowd, M. van Weele, and M. Kanakidou. 2010. "Global Modeling of the Oceanic Source of Organic Aerosols." Advances in Meteorology 2010 (939171): 1-16 [10.1155/2010/939171]

    Arneth, A., S. P. Harrison, S. Zaehle, et al. K. Tsigaridis, S. Menon, P. J. Bartlein, J. Feichter, A. Korhola, M. Kulmala, D. ODonnell, G. Schurgers, S. Sorvari, and T. Vesala. 2010. "Terrestrial biogeochemical feedbacks in the climate system." Nature Geosci 3 (8): 525-532 [10.1038/ngeo905]

    Bauer, S. E., S. Menon, D. M. Koch, T. C. Bond, and K. Tsigaridis. 2010. "A global modeling study on carbonaceous aerosol microphysical characteristics and radiative effects." Atmos. Chem. Phys. 10 (15): 7439-7456 [10.5194/acp-10-7439-2010]

    Karl, M., K. Tsigaridis, E. Vignati, and F. Dentener. 2009. "Formation of secondary organic aerosol from isoprene oxidation over Europe." Atmos. Chem. Phys. 9 (18): 7003-7030 [10.5194/acp-9-7003-2009]

    Myriokefalitakis, S., M. Vrekoussis, K. Tsigaridis, et al. F. Wittrock, A. Richter, C. Bruehl, R. Volkamer, J. P. Burrows, and M. Kanakidou. 2008. "The influence of natural and anthropogenic secondary sources on the glyoxal global distribution." Atmos. Chem. Phys. 8 (16): 4965-4981 [10.5194/acp-8-4965-2008]

    Tsigaridis, K., M. Krol, F. J. Dentener, et al. Y. Balkanski, J. Lathière, S. Metzger, D. A. Hauglustaine, and M. Kanakidou. 2006. "Change in global aerosol composition since preindustrial times." Atmos. Chem. Phys. 6 (12): 5143-5162 [10.5194/acp-6-5143-2006]

    Tsigaridis, K., J. Lathière, M. Kanakidou, and D. A. Hauglustaine. 2005. "Naturally driven variability in the global secondary organic aerosol over a decade." Atmos. Chem. Phys. 5 (7): 1891-1904 [10.5194/acp-5-1891-2005]

    Kanakidou, M., J. H. Seinfeld, S. N. Pandis, et al. I. Barnes, F. J. Dentener, M. C. Facchini, R. Van Dingenen, B. Ervens, A. Nenes, C. J. Nielsen, E. Swietlicki, J. P. Putaud, Y. Balkanski, S. Fuzzi, J. Horth, G. K. Moortgat, R. Winterhalter, C. E. Myhre, K. Tsigaridis, E. Vignati, E. G. Stephanou, and J. Wilson. 2005. "Organic aerosol and global climate modelling: a review." Atmos. Chem. Phys. 5 (4): 1053-1123 [10.5194/acp-5-1053-2005]

    Tsigaridis, K., and M. Kanakidou. 2003. "Global modelling of secondary organic aerosol in the troposphere: a sensitivity analysis." Atmos. Chem. Phys. 3 (5): 1849-1869 [10.5194/acp-3-1849-2003]

    Tsigaridis, K., and M. Kanakidou. 2002. "Importance of volatile organic compounds photochemistry over a forested area in central Greece." Atmos Environ 36 (19): 3137-3146 [10.1016/S1352-2310(02)00234-0]

    Gros, V., K. Tsigaridis, B. Bonsang, M. Kanakidou, and C. Pio. 2002. "Factors controlling the diurnal variation of CO above a forested area in southeast Europe." Atmos Environ 36 (19): 3127-3135 [10.1016/S1352-2310(02)00237-6]

    Kouvarakis, G., K. Tsigaridis, M. Kanakidou, and N. Mihalopoulos. 2000. "Temporal variations of surface regional background ozone over Crete Island in the southeast Mediterranean." J. Geophys. Res. 105 4399-4407 [doi:10.1029/1999JD900984]

    Kanakidou, M., K. Tsigaridis, F. J. Dentener, and P. J. Crutzen. 2000. "Human-activity-enhanced formation of organic aerosols by biogenic hydrocarbon oxidation." J. Geophys. Res. 105 9243-9354 [doi:10.1029/1999JD901148]

    Non-Refereed

    Schmidt, G. A., D. T. Shindell, and K. Tsigaridis. 2014. "Reconciling warming trends." Nature Geosci 7 (3): 158-160 [10.1038/ngeo2105]

    Brief Bio

    My research interests aim in understanding the role aerosols play in the Earth system, by studying the interactions and feedbacks between the atmosphere, the terrestrial biosphere, the ocean, and climate.

    I am currently working on a variety of topics related to aerosol research and their sources, sinks, and interactions with climate at various levels of complexity. My studies range from detailed aerosol processes such as the formation of secondary organic aerosols (SOA), to centennial time scale climate variability related to natural variability and external forcings. While my main expertise is organic aerosols, I am also experienced in working with all other aerosol types as well as tropospheric gas-phase and heterogeneous chemistry. I have extensively used both box models that I developed, and 3-dimensional global models: the TM3 chemistry/transport model, the IPSL general circulation model LMDz-INCA, and the GISS modelE Earth System Model (ESM), for which I had contributed to the IPCC AR5 model development. Currently I am working with the next generation of the NASA GISS ESM, the GISS ModelE2, which is part of CMIP5.

    Topics that I either work on, or plan to work in the future include studies on:
    • missing aerosol species and sources, such as the primary oceanic aerosols and their importance on the remote marine atmosphere, the in-cloud and aerosol water aqueous formation of organic aerosols that can lead to brown carbon formation, the primary terrestrial biological particles, and the organic nitrogen
    • missing aerosol parameterizations, such as the effect of aerosol mixing on cloud condensation nuclei and aerosol absorption, the semi-volatility of primary organic aerosols, the importance of in-canopy processes on natural terrestrial aerosol and aerosol precursor sources, and the mineral dust iron solubility and bioavailability
    • the change of aerosol burden and its spatiotemporal distribution, especially with regard to its role and importance on gas-phase chemistry via photolysis rates changes and heterogeneous reactions in the atmosphere, as well as their effect on key gas-phase species like ozone
    • the physical and optical properties of aerosols, which affect aerosol transport, lifetime, and light scattering and absorption, with the latter being very sensitive to the vertical distribution of absorbing aerosols
    • aerosol-cloud interactions, which include cloud activation, the aerosol indirect effect and the impact of clouds on aerosol removal
    • changes on climate and feedbacks related with all these topics

    In order to understand the climate system as a whole, improve the aerosol representation in the GISS ModelE2 and contribute to future IPCC climate change assessments and CMIP activities, I am also interested in understanding the importance of natural and anthropogenic aerosol changes in the atmosphere on the terrestrial biosphere, the ocean and climate. The climate feedbacks involved with these changes, which are key in understanding the climate system as a whole, include:

    the importance of aerosol absorption on climate
    the impact of aerosol deposition which affects biology and, hence, emissions of aerosols and aerosol precursors via organic nitrogen, organic phosphorus and iron fertilization
    the importance of land use and land use changes on natural and anthropogenic aerosol sources
    the SOA sources and impact on climate, with special attention on the impact human activities have on natural SOA formation

    In order to quantitatively answer such questions I perform simulations of the past, present and future atmospheres, and make comparisons with measurements and remote sensing data, all of which help understand, evaluate and improve the model’s parameterizations and performance, and our understanding of the Earth system.

    Refereed

    Tsigaridis, K., N. Daskalakis, M. Kanakidou, et al. P. J. Adams, P. Artaxo, R. Bahadur, Y. Balkanski, S. E. Bauer, N. Bellouin, A. Benedetti, T. Bergman, T. K. Berntsen, J. P. Beukes, H. Bian, K. S. Carslaw, M. Chin, G. Curci, T. Diehl, R. C. Easter, S. J. Ghan, S. L. Gong, A. Hodzic, C. R. Hoyle, T. Iversen, S. Jathar, J. L. Jimenez, J. W. Kaiser, A. Kirkevåg, D. Koch, H. Kokkola, Y. H. Lee, G. Lin, X. Liu, G. Luo, X. Ma, G. W. Mann, N. Mihalopoulos, J.-J. Morcrette, J.-F. Müller, G. Myhre, S. Myriokefalitakis, S. Ng, D. O'Donnell, J. E. Penner, L. Pozzoli, K. J. Pringle, L. M. Russell, M. Schulz, J. Sciare, O. Seland, D. T. Shindell, S. Sillman, R. B. Skeie, D. Spracklen, T. Stavrakou, S. D. Steenrod, T. Takemura, P. Tiitta, S. Tilmes, H. Tost, T. van Noije, P. G. van Zyl, K. von Salzen, F. Yu, Z. Wang, Z. Wang, R. A. Zaveri, H. Zhang, K. Zhang, Q. Zhang, and X. Zhang. 2014. "The AeroCom evaluation and intercomparison of organic aerosol in global models." Atmos. Chem. Phys. 14 10845-10895 [doi:10.5194/acp-14-10845-2014]

    Trail, M., A. P. Tsimpidi, P. Liu, et al. K. Tsigaridis, J. Rudokas, P. Miller, A. Nenes, Y. Hu, and A. G. Russell. 2014. "Sensitivity of air quality to potential future climate change and emissions in the United States and major cities." Atmos. Environ. 94 552-563 [doi:10.1016/j.atmosenv.2014.05.079]

    Pan, X., M. Chin, R. Gautam, et al. H. Bian, D. Kim, P. R. Colarco, T. L. Diehl, T. Takemura, L. Pozzoli, K. Tsigaridis, S. E. Bauer, and N. Bellouin. 2014. "A multi-model evaluation of aerosols over South Asia: Common problems and possible causes." Atmos. Chem. Phys. Discuss. 14 (13): 19095-19147 [10.5194/acpd-14-19095-2014]

    Miller, R. L., G. A. Schmidt, L. Nazarenko, et al. N. L. Tausnev, S. E. Bauer, A. Del Genio, M. Kelley, K.-W. Lo, R. A. Ruedy, D. T. Shindell, I. Aleinov, M. P. Bauer, R. Bleck, V. M. Canuto, Y. Chen, Y. Cheng, T. L. Clune, G. S. Faluvegi, J. E. Hansen, R. J. Healy, N. Y. Kiang, D. Koch, A. A. Lacis, A. N. Legrande, J. Lerner, S. Menon, V. Oinas, C. Perez Garcia Pando, J. P. Perlwitz, M. J. Puma, D. Rind, A. Romanou, G. L. Russell, M. Sato, S. Sun, K. Tsigaridis, N. Unger, A. Voulgarakis, M.-S. Yao, and J. Zhang. 2014. "CMIP5 historical simulations (1850-2012) with GISS ModelE2." J. Adv. Model. Earth Syst. 6 (2): 441-477 [10.1002/2013MS000266]

    Kim, D., M. Chin, H. Yu, et al. T. Diehl, Q. Tan, R. A. Kahn, K. Tsigaridis, S. E. Bauer, T. Takemura, L. Pozzoli, N. Bellouin, M. Schulz, S. Peyridieu, A. Chedin, and B. Koffi. 2014. "Sources, sinks, and transatlantic transport of North African dust aerosol: A multimodel analysis and comparison with remote sensing data." J. Geophys. Res. Atmos. 119 6259-6277 [10.1002/2013JD021099]

    Mann, G. W., K. S. Carslaw, C. L. Reddington, et al. K. J. Pringle, M. Schulz, A. Asmi, D. V. Spracklen, D. A. Ridley, M. T. Woodhouse, L. A. Lee, K. Zhang, S. J. Ghan, R. C. Easter, X. Liu, P. Stier, Y. Lee, P. J. Adams, H. Tost, J. Lelieveld, S. E. Bauer, K. Tsigaridis, T. P. van Noije, A. Strunk, E. Vignati, N. Bellouin, M. Dalvi, C. E. Johnson, T. Bergman, H. Kokkola, K. von Salzen, F. Yu, G. Luo, A. Petzold, J. Heintzenberg, A. Clarke, J. A. Ogren, J. Gras, U. Baltensperger, U. Kaminski, S. G. Jennings, C. D. O'Dowd, R. M. Harrison, D. C. Beddows, M. Kulmala, Y. Viisanen, V. Ulevicius, N. Mihalopoulos, V. Zdimal, M. Fiebig, H.-C. Hansson, E. Swietlicki, and J. S. Henzig. 2014. "Intercomparison and evaluation of global aerosol microphysical properties among AeroCom models of a range of complexity." Atmos. Chem. Phys. 14 (9): 4679-4713 [10.5194/acp-14-4679-2014]

    Schmidt, G. A., M. Kelley, L. Nazarenko, et al. R. A. Ruedy, G. L. Russell, I. Aleinov, M. P. Bauer, S. E. Bauer, M. K. Bhat, R. Bleck, V. M. Canuto, Y. Chen, Y. Cheng, T. L. Clune, A. Del Genio, R. de Fainchtein, G. S. Faluvegi, J. E. Hansen, R. J. Healy, N. Y. Kiang, D. Koch, A. A. Lacis, A. N. Legrande, J. Lerner, K.-W. Lo, E. Matthews, S. Menon, R. L. Miller, V. Oinas, A. O. Oloso, J. P. Perlwitz, M. J. Puma, W. M. Putman, D. Rind, A. Romanou, M. Sato, D. T. Shindell, S. Sun, R. A. Syed, N. L. Tausnev, K. Tsigaridis, N. Unger, A. Voulgarakis, M.-S. Yao, and J. Zhang. 2014. "Configuration and assessment of the GISS ModelE2 contributions to the CMIP5 archive." J. Adv. Model. Earth Syst. 6 (1): 141-184 [10.1002/2013MS000265]

    Jiao, C., M. G. Flanner, Y. Balkanski, et al. S. E. Bauer, N. Bellouin, T. K. Berntsen, H. Bian, K. S. Carslaw, M. Chin, N. De Luca, T. Diehl, S. J. Ghan, T. Iversen, A. Kirkevag, D. Koch, X. Liu, G. W. Mann, J. E. Penner, G. Pitari, M. Schulz, O. Seland, R. B. Skeie, S. D. Steenrod, P. Stier, T. Takemura, K. Tsigaridis, T. van Noije, Y. Yun, and K. Zhang. 2014. "An AeroCom assessment of black carbon in Arctic snow and sea ice." Atmos. Chem. Phys. 14 (5): 2399-2417 [10.5194/acp-14-2399-2014]

    Bauer, S. E., A. Bausch, L. Nazarenko, et al. K. Tsigaridis, B. Xu, R. Edwards, M. Bisiaux, and J. McConnell. 2013. "Historical and future black carbon deposition on the three ice caps: Ice core measurements and model simulations from 1850 to 2100." J. Geophys. Res. Atmos. 118 (14): 7948-7961 [10.1002/jgrd.50612]

    Myhre, G., B. H. Samset, M. Schulz, et al. Y. Balkanski, S. E. Bauer, T. K. Berntsen, H. Bian, N. Bellouin, M. Chin, T. Diehl, R. C. Easter, J. Feichter, S. J. Ghan, D. Hauglustaine, T. Iversen, S. Kinne, A. Kirkevag, J.-F. Lamarque, G. Lin, X. Liu, M. T. Lund, G. Luo, X. Ma, T. van Noije, J. E. Penner, P. J. Rasch, A. Ruiz, O. Seland, R. B. Skeie, P. Stier, T. Takemura, K. Tsigaridis, P. Wang, Z. Wang, L. Xu, H. Yu, F. Yu, J.-H. Yoon, K. Zhang, H. Zhang, and C. Zhou. 2013. "Radiative forcing of the direct aerosol effect from AeroCom Phase II simulations." Atmos. Chem. Phys. 13 (4): 1853-1877 [10.5194/acp-13-1853-2013]

    Meskhidze, N., M. D. Petters, K. Tsigaridis, et al. T. Bates, C. ODowd, J. Reid, E. R. Lewis, B. Gantt, M. D. Anguelova, P. V. Bhave, J. Bird, A. H. Callaghan, D. Ceburnis, R. Chang, A. Clarke, G. de Leeuw, G. Deane, P. J. DeMott, S. Elliot, M.-C. Facchini, C. W. Fairall, L. Hawkins, Y. Hu, J. G. Hudson, M. S. Johnson, K. C. Kaku, W. C. Keene, D. J. Kieber, M. S. Long, M. Martensson, R. L. Modini, C. L. Osburn, K. A. Prather, A. Pszenny, M. Rinaldi, L. M. Russell, M. Salter, A. M. Sayer, A. Smirnov, S. R. Suda, T. D. Toth, D. R. Worsnop, A. Wozniak, and S. R. Zorn. 2013. "Production mechanisms, number concentration, size distribution, chemical composition, and optical properties of sea spray aerosols." Atmos. Sci. Lett. 14 (4): 207-213 [10.1002/asl2.441]

    Samset, B. H., G. Myhre, M. Schulz, et al. Y. Balkanski, S. Bauer, T. K. Berntsen, H. Bian, N. Bellouin, T. Diehl, R. C. Easter, S. J. Ghan, T. Iversen, S. Kinne, A. Kirkevag, J.-F. Lamarque, G. Lin, X. Liu, J. Penner, O. Seland, R. B. Skeie, P. Stier, T. Takemura, K. Tsigaridis, and K. Zhang. 2013. "Black carbon vertical profiles strongly affect its radiative forcing uncertainty." Atmos. Chem. Phys. 13 (5): 2423-2434 [10.5194/acp-13-2423-2013]

    Trail, M., A. P. Tsimpidi, P. Liu, et al. K. Tsigaridis, Y. Hu, A. Nenes, B. Stone, and A. G. Russell. 2013. "Potential impact of land use change on future regional climate in the Southeastern U.S.: Reforestation and crop land conversion." J. Geophys. Res. Atmos. 118 (20): 11,577-11,588 [10.1002/2013JD020356]

    Trail, M., A. P. Tsimpidi, P. Liu, et al. K. Tsigaridis, Y. Hu, A. Nenes, and A. G. Russell. 2013. "Downscaling a global climate model to simulate climate change over the US and the implication on regional and urban air quality." Geosci. Model Dev. 6 (5): 1429-1445 [10.5194/gmd-6-1429-2013]

    Tsigaridis, K., D. Koch, and S. Menon. 2013. "Uncertainties and importance of sea spray composition on aerosol direct and indirect effects." J. Geophys. Res. Atmos. 118 (1): 220-235 [10.1029/2012JD018165]

    Knobelspiesse, K. D., B. Cairns, M. I. Mishchenko, et al. J. Chowdhary, K. Tsigaridis, B. Van Diedenhoven, W. Martin, M. Ottaviani, and M. D. Alexandrov. 2012. "Analysis of fine-mode aerosol retrieval capabilities by different passive remote sensing instrument designs." Opt. Express 20 (19): 21,457-21,484 [10.1364/OE.20.021457]

    Kanakidou, M., R. A. Duce, J. M. Prospero, et al. A. R. Baker, C. Benitez-Nelson, F. J. Dentener, K. A. Hunter, P. S. Liss, N. Mahowald, G. S. Okin, M. Sarin, K. Tsigaridis, M. Uematsu, L. M. Zamora, and T. Zhu. 2012. "Atmospheric fluxes of organic N and P to the global ocean." Global Biogeochem. Cycles 26 (3): GB3026 [10.1029/2011GB004277]

    Rinaldi, M., S. Decesari, C. Carbone, et al. E. Finessi, S. Fuzzi, D. Ceburnis, C. D. O'Dowd, J. Sciare, J. P. Burrows, M. Vrekoussis, B. Ervens, K. Tsigaridis, and M. C. Facchini. 2011. "Evidence of a natural marine source of oxalic acid and a possible link to glyoxal." J. Geophys. Res. 116 (D16): D16204 [10.1029/2011JD015659]

    Myriokefalitakis, S., K. Tsigaridis, N. Mihalopoulos, et al. J. Sciare, A. Nenes, K. Kawamura, A. Segers, and M. Kanakidou. 2011. "In-cloud oxalate formation in the global troposphere: a 3-D modeling study." Atmos. Chem. Phys. 11 (12): 5761-5782 [10.5194/acp-11-5761-2011]

    O'Donnell, D., K. Tsigaridis, and J. Feichter. 2011. "Estimating the direct and indirect effects of secondary organic aerosols using ECHAM5-HAM." Atmos. Chem. Phys. 11 (16): 8635-8659 [10.5194/acp-11-8635-2011]

    Myriokefalitakis, S., E. Vignati, K. Tsigaridis, et al. C. Papadimas, J. Sciare, N. Mihalopoulos, M. C. Facchini, M. Rinaldi, F. J. Dentener, D. Ceburnis, N. Hatzianastasiou, C. D. O'Dowd, M. van Weele, and M. Kanakidou. 2010. "Global Modeling of the Oceanic Source of Organic Aerosols." Advances in Meteorology 2010 (939171): 1-16 [10.1155/2010/939171]

    Arneth, A., S. P. Harrison, S. Zaehle, et al. K. Tsigaridis, S. Menon, P. J. Bartlein, J. Feichter, A. Korhola, M. Kulmala, D. ODonnell, G. Schurgers, S. Sorvari, and T. Vesala. 2010. "Terrestrial biogeochemical feedbacks in the climate system." Nature Geosci 3 (8): 525-532 [10.1038/ngeo905]

    Bauer, S. E., S. Menon, D. M. Koch, T. C. Bond, and K. Tsigaridis. 2010. "A global modeling study on carbonaceous aerosol microphysical characteristics and radiative effects." Atmos. Chem. Phys. 10 (15): 7439-7456 [10.5194/acp-10-7439-2010]

    Karl, M., K. Tsigaridis, E. Vignati, and F. Dentener. 2009. "Formation of secondary organic aerosol from isoprene oxidation over Europe." Atmos. Chem. Phys. 9 (18): 7003-7030 [10.5194/acp-9-7003-2009]

    Myriokefalitakis, S., M. Vrekoussis, K. Tsigaridis, et al. F. Wittrock, A. Richter, C. Bruehl, R. Volkamer, J. P. Burrows, and M. Kanakidou. 2008. "The influence of natural and anthropogenic secondary sources on the glyoxal global distribution." Atmos. Chem. Phys. 8 (16): 4965-4981 [10.5194/acp-8-4965-2008]

    Tsigaridis, K., M. Krol, F. J. Dentener, et al. Y. Balkanski, J. Lathière, S. Metzger, D. A. Hauglustaine, and M. Kanakidou. 2006. "Change in global aerosol composition since preindustrial times." Atmos. Chem. Phys. 6 (12): 5143-5162 [10.5194/acp-6-5143-2006]

    Tsigaridis, K., J. Lathière, M. Kanakidou, and D. A. Hauglustaine. 2005. "Naturally driven variability in the global secondary organic aerosol over a decade." Atmos. Chem. Phys. 5 (7): 1891-1904 [10.5194/acp-5-1891-2005]

    Kanakidou, M., J. H. Seinfeld, S. N. Pandis, et al. I. Barnes, F. J. Dentener, M. C. Facchini, R. Van Dingenen, B. Ervens, A. Nenes, C. J. Nielsen, E. Swietlicki, J. P. Putaud, Y. Balkanski, S. Fuzzi, J. Horth, G. K. Moortgat, R. Winterhalter, C. E. Myhre, K. Tsigaridis, E. Vignati, E. G. Stephanou, and J. Wilson. 2005. "Organic aerosol and global climate modelling: a review." Atmos. Chem. Phys. 5 (4): 1053-1123 [10.5194/acp-5-1053-2005]

    Tsigaridis, K., and M. Kanakidou. 2003. "Global modelling of secondary organic aerosol in the troposphere: a sensitivity analysis." Atmos. Chem. Phys. 3 (5): 1849-1869 [10.5194/acp-3-1849-2003]

    Tsigaridis, K., and M. Kanakidou. 2002. "Importance of volatile organic compounds photochemistry over a forested area in central Greece." Atmos Environ 36 (19): 3137-3146 [10.1016/S1352-2310(02)00234-0]

    Gros, V., K. Tsigaridis, B. Bonsang, M. Kanakidou, and C. Pio. 2002. "Factors controlling the diurnal variation of CO above a forested area in southeast Europe." Atmos Environ 36 (19): 3127-3135 [10.1016/S1352-2310(02)00237-6]

    Kouvarakis, G., K. Tsigaridis, M. Kanakidou, and N. Mihalopoulos. 2000. "Temporal variations of surface regional background ozone over Crete Island in the southeast Mediterranean." J. Geophys. Res. 105 4399-4407 [doi:10.1029/1999JD900984]

    Kanakidou, M., K. Tsigaridis, F. J. Dentener, and P. J. Crutzen. 2000. "Human-activity-enhanced formation of organic aerosols by biogenic hydrocarbon oxidation." J. Geophys. Res. 105 9243-9354 [doi:10.1029/1999JD901148]

    Non-Refereed

    Schmidt, G. A., D. T. Shindell, and K. Tsigaridis. 2014. "Reconciling warming trends." Nature Geosci 7 (3): 158-160 [10.1038/ngeo2105]

                                                                                                                                                                                            
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