Anton S Darmenov

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Anton S Darmenov

  • RESEARCH AST, METEOROLOGICAL STUDIES
  • 301.614.5493
  • NASA/GSFC
  • Mail Code: 610.1
  • Greenbelt , MD 20771
  • Employer: NASA
  • Brief Bio

    Dr. Anton Darmenov serves as an Aerosol modeler for NASA/GSFC/GMAO (Code 610.1). In this role, Dr. Darmenov is responsible for the development, implementation and enhancement of aerosol physics packages (such as MAM7 and GOCART) for the GMAO’s GEOS-5 modeling and data assimilation system. His expertise encompasses aerosol modeling, aerosol physics and atmospheric chemistry, and scientific programming. Dr. Darmenov’s research interests include atmospheric chemistry and aerosol modeling; aerosol optical and CCN/IN activation properties; direct and indirect effects of aerosol on climate; aerosol modeling to support aerosol data assimilation; integrated use of aerosol models and satellite observations. Prior to joining NASA/GSFC, Dr. Darmenov worked as an aerosol modeler for ERT, Inc. and SSAI, Inc. under the NASA GMAO’s scientific support services contract. Additionally, Dr. Darmenov has worked as a postdoctoral fellow in the School of Earth and Atmospheric Sciences at Georgia Institute of Technology where his primary research focused on blending model and satellite data for the purpose of identifying the regional thermal IR-signature of mineral dust.
    Dr. Darmenov was born in Bulgaria, where he earned a bachelor’s degree in physics from the Sofia University. He also received his master’s degree in physics specializing in nuclear and elementary particles physics from the Sofia University. He earned his doctorate in atmospheric sciences from the Georgia Institute of Technology.

    Research Interests

    Aerosol modeling


    Interaction of aerosol, clouds and radiation


    Direct and indirect effects of aerosol on climate


    Aerosol data assimilation


    Integrated use of aerosol models and satellite observations


    Biomass burning emissions


    Sources of atmospheric aerosols


    Current Projects

    Developing and Evaluating an Advanced Aerosol Module in GEOS-5 for Data Assimilation and Climate Studies

    This project aims at enhancing the aerosol modeling capabilities in NASA's Goddard Earth Observing System Model, Version 5 (GEOS-5) by the introduction of aerosol microphysics, a key feature for realistic representations of aerosol-cloud interactions and aerosol mixing state. The Modal Aerosol Module (MAM) that has been implemented at the NCAR Community Atmospheric Model version 5 (CAM5) is currently being adopted for GEOS-5. This project is a close collaboration between the Pacific Northwest National Laboratory (PNNL) and the NASA Goddard Space Flight Center (GSFC) Global Modeling and Assimilation Office (GMAO).

    GSFC-ESD Climate Modeling: Development and evaluation of aerosol emissions in high-resolution simulations conducted with GEOS-5

    Realistic representation of aerosols and their effects in Observing System Simulation Experiments (OSSEs) requires well tuned modeling system. Recognizing the fact that aerosol production and loss processes employ parameterizations that are resolution dependent model response to changes of spatial resolution needs to be examined and accounted for. Emissions of mineral dust and sea salt aerosols (the two most abundant natural aerosol species) in particular are sensitive to changes in model resolution because they are wind driven. New high resolution emission datasets of anthropogenic and biomass burning emissions also need to be developed in order to improve the realism of high-resolution aerosol simulations. This project aims at development and evaluation of aerosol emissions in global mesoscale AGCM simulations conducted with GEOS-5.

    Positions/Employment

    7 / 2013 - Present

    Research assistant

    NASA, Goddard Space Flight Center
    • Primary developer and maintainer of GEOS-5 aerosol modules.
    • Co-principal investigator and primary developer of baseline MAM7 implementation in GEOS-5.
    • Testing and validation of the new GEOS-5 aerosol chemistry and microphysics package using satellite (MODIS, MISR) observations and AERONET data.
    • Providing input from the MAM7 aerosol package to GEOS-5 cloud microphysics developers.
    • Model development, preparation and evaluation of updated emissions and oxidant fields in support of the next version of the Modern Era-Retrospective Analysis for Research and Applications  (MERRA 2).
    2 / 2012 - 6 / 2013

    Atmospheric aerosol modeler

    Science Systems and Applications, Inc., NASA Goddard Space Flight Center
    • Implementation, development and initial testing of the modal aerosol module MAM7 in GEOS-5.
    • Designed, developed and integrated in GEOS-5 an atmospheric chemistry component optimized for global aerosol modeling.
    • Created lookup tables with aerosol optical properties to support the integration of the modal aerosol model with the GEOS-5 radiation component.
    • Extended the Quick Fire Emission Dataset (QFED) inventory with primary emissions of chemical species that are included in the GMI chemical mechanism. Implemented a persistence model and estimates of emissions from unobserved areas utilizing MODIS fire radiative power (FRP) retrievals.
    3 / 2010 - 1 / 2012

    Atmospheric aerosol modeler

    Earth Resources Technology Inc., NASA Goddard Space Flight Center
    • Performed simulations with the coupled GEOS5/GOCART modeling system; performed code development, testing and validation of modeled aerosol distributions with NASA’s Earth Observing satellites data and ground based measurements.
    • Ensured compliance of the GEOS-5 output aerosol fields from the AR5 decadal hindcasts with the CMIP5 experimental protocol requirements.
    • Developed a satellite-data constrained parameterization of sea salt emissions for aerosol forecasting. The parameterization is currently used in the GEOS-5 Data Assimilation System.
    • Implemented a technique to optimize magnitude of global emissions of sea salt and dust aerosols for use in GEOS-5 using aerosol optical depth retrieved from MODIS and MISR.
    • Enhanced the GEOS-5 aerosol modeling capability by improving and maintaining the Quick Fire Emission Dataset (QFED); utilized aerosol optical depth from MODIS to improve estimates of biomass burning emissions for use in the GEOS-5 model.
    • Deloped a multi-decadal Fire Weather Index (FWI) dataset using the MERRA reanalysis.
    • Designed an aerosol microphysics ESMF-component based on the CESM/MAM aerosol micro-
      physics core module.
    1 / 2009 - 2 / 2010

    Postdoctoral fellow

    Georgia Institute of Technology, School of Earth & Atmospheric Sciences
    • Developed an integrated Asian Dust Database containing ground based meteorological observations, satellite data and results from numerical model simulations.
    • Maintained and validated the regional dust modeling system WRF-DuMo.
    8 / 2003 - 12 / 2008

    Research Assistant

    Georgia Institute of Technology, School of Earth & Atmospheric Sciences
    • Improved the capabilities of the Weather Research and Forecast (WRF) model coupled with Chemistry (WRF-Chem) to simulate atmospheric dust. Modified and optimized the existing code base for dust modeling applications.
    • Developed a coupled regional dust modeling system WRF-DuMo by incorporating the dust emission module DuMo into the WRF-Chem model.
    1 / 2003 - 8 / 2003

    Research Assistant

    University of Colorado at Boulder, Program of Atmospheric and Oceanic Sciences Investigated the capability of space-borne remote sensing instruments to detect and discriminate mineral dust from clouds.

    6 / 2002 - 1 / 2003

    Professional Research Assistant

    University of Colorado at Boulder, Program of Atmospheric and Oceanic Sciences Developed SQL database containing meteorological data fields and a web application for interactive database search.
    9 / 2000 - 4 / 2002

    Research Scientist

    Scientific Forming Technologies Inc. , Columbus, Ohio Maintained and enhanced the DEFORMTM products for MS Windows - DEFORM PC, DEFORM-PC PRO and DEFORM-TOOLS.

    Education

    Ph.D. in Atmospheric Sciences, 2008
    School of Earth and Atmospheric Sciences, Georgia Institute of Technology

    M.S. in Physics, 1998
    Faculty of Physics, Sofia University, Sofia, Bulgaria

    Professional Societies

    American Geophysical Union, 2008 - Present

    Professional Service

    • New (Early Career) Investigator Program in Earth Science, Proposal Review Panel, 2012.
    • NASA Earth and Space Science Fellowship 2012, Reviewer.

    Awards

    • Outstanding science support for design and implementation of an ESMF-compliant aerosol chemistry and microphysics package for the GEOS5 atmospheric general circulation model, NASA/GSFC GMAO, April, 2013.
    • Outstanding performance award for concerted group efforts in preparing CMIP5 ouput to be distributed on the Earth System Grid, NASA/GSFC GMAO, January, 2011.
    • Outstanding performance award for dedicated group efforts towards the challenging objectives for the ARRA tasks, NASA/GSFC GMAO, January, 2011.
    • Research excellence award, School of Earth and Atmospheric Sciences at the Georgia Institute of Technology, April 2007.
    • Best poster presentation award at the 3rd EAS Graduate Student Symposium, November, 2005.
    • “Eureka” Foundation scholarship, 1993.
    • XXIV International Physics Olympiad, Virginia, USA, July 1992: Honorable Mention for Recognition of Outstanding Achievement in Physics.

    Other Professional Information

    Fluent in Bulgarian and Russian.

    Publications

    Refereed

    Bian, H., P. R. Colarco, M. Chin, et al. G. Chen, J. M. Rodriguez, Q. Liang, D. Blake, D.-C. A. Chu, A. M. Da Silva, A. S. Darmenov, G. Diskin, H. E. Fuelberg, G. Huey, Y. Kondo, J. E. Nielsen, X. Pan, and A. Wisthaler. 2013. "Source attributions of pollution to the western Arctic during the NASA ARCTAS field campaign." Atmospheric Chemistry and Physics 13 4707-4721 [10.5194/acp-13-4707-2013]

    Darmenov, A. S., and I. N. Sokolik. 2009. "Spatial variability of satellite visible radiances in dust and dust-cloud mixed conditions: Implications for dust detection." Geophys. Res. Lett. 36 L14811 [doi:10.1029/2009GL038383]

    Darmenova, K., I. N. Sokolik, and A. Darmenov. 2005. "Characterization of east Asian dust outbreaks in the spring of 2001 using ground-based and satellite data." J. Geophys. Res. 110 D02204 [doi:10.1029/2004JD004842]

    Darmenov, A., and I. N. Sokolik. 2005. "Identifying the regional thermal-IR radiative signature of mineral dust with MODIS." Geophys. Res. Lett. 32 L16803 [doi:10.1029/2005GL023092]

    Talks, Presentations and Posters

    Improving the Representation of Aerosols in the GEOS-5 Modeling and Data Assimilation System. 5 / 2014
    Data-driven aerosol development in the GEOS-5 modeling and data assimilation system. 12 / 2013
    Improving the biomass burning emissions in the NASA GEOS5/GOCART model. 3 / 2011
    Investigating the environmental impact of the 2010 Russian fires with the NASA GEOS-5 modeling and data assimilation system. 12 / 2010
    Characterization of three dimensional spatiotemporal distribution of Asian dust by merging observations and predictions from the regional dust modeling system WRF-DuMo. 9 / 2008
    Probabilistic dust-cloud mask as a discrimination tool and a data confidence level indicator. 7 / 2006

    Brief Bio

    Dr. Anton Darmenov serves as an Aerosol modeler for NASA/GSFC/GMAO (Code 610.1). In this role, Dr. Darmenov is responsible for the development, implementation and enhancement of aerosol physics packages (such as MAM7 and GOCART) for the GMAO’s GEOS-5 modeling and data assimilation system. His expertise encompasses aerosol modeling, aerosol physics and atmospheric chemistry, and scientific programming. Dr. Darmenov’s research interests include atmospheric chemistry and aerosol modeling; aerosol optical and CCN/IN activation properties; direct and indirect effects of aerosol on climate; aerosol modeling to support aerosol data assimilation; integrated use of aerosol models and satellite observations. Prior to joining NASA/GSFC, Dr. Darmenov worked as an aerosol modeler for ERT, Inc. and SSAI, Inc. under the NASA GMAO’s scientific support services contract. Additionally, Dr. Darmenov has worked as a postdoctoral fellow in the School of Earth and Atmospheric Sciences at Georgia Institute of Technology where his primary research focused on blending model and satellite data for the purpose of identifying the regional thermal IR-signature of mineral dust.
    Dr. Darmenov was born in Bulgaria, where he earned a bachelor’s degree in physics from the Sofia University. He also received his master’s degree in physics specializing in nuclear and elementary particles physics from the Sofia University. He earned his doctorate in atmospheric sciences from the Georgia Institute of Technology.

    Refereed

    Bian, H., P. R. Colarco, M. Chin, et al. G. Chen, J. M. Rodriguez, Q. Liang, D. Blake, D.-C. A. Chu, A. M. Da Silva, A. S. Darmenov, G. Diskin, H. E. Fuelberg, G. Huey, Y. Kondo, J. E. Nielsen, X. Pan, and A. Wisthaler. 2013. "Source attributions of pollution to the western Arctic during the NASA ARCTAS field campaign." Atmospheric Chemistry and Physics 13 4707-4721 [10.5194/acp-13-4707-2013]

    Darmenov, A. S., and I. N. Sokolik. 2009. "Spatial variability of satellite visible radiances in dust and dust-cloud mixed conditions: Implications for dust detection." Geophys. Res. Lett. 36 L14811 [doi:10.1029/2009GL038383]

    Darmenova, K., I. N. Sokolik, and A. Darmenov. 2005. "Characterization of east Asian dust outbreaks in the spring of 2001 using ground-based and satellite data." J. Geophys. Res. 110 D02204 [doi:10.1029/2004JD004842]

    Darmenov, A., and I. N. Sokolik. 2005. "Identifying the regional thermal-IR radiative signature of mineral dust with MODIS." Geophys. Res. Lett. 32 L16803 [doi:10.1029/2005GL023092]

                                                                                                                                                                                            
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