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Dr. Altug Aksoy
Associate Scientist
Hurricane Research Division-CIMAS
phone: 305-361-4336
fax: 305-361-4402
Altug.Aksoy@noaa.gov

NOAA's Atlantic Oceanographic and Meteorological Laboratory
4301 Rickenbacker Causeway
Miami, FL 33149

Professional Interests

Dr. Aksoy has scientific interests in data assimilation, numerical weather prediction, and ensemble methods, and especially in their application to tropical and mesoscale meteorology, as well as remote sensing platforms such as radars, lidars, and satellites. He is jointly appointed at Hurricane Research Division and University of Miami's Cooperative Institute for Marine and Atmospheric Studies since 2008. He earned his Ph.D. degree from Texas A&M University Department of Atmospheric Sciences in 2005.

Dr. Aksoy is a member of the data assimilation group and is the main developer of the Hurricane Ensemble Data Assimilation System (HEDAS). This is an advanced data assimilation system designed to assimilate hurricane inner-core observations at the vortex and smaller scales. Observation platforms that are commonly utlized for this purpose include the tail Doppler radar, dropwindsondes, Stepped Frequency Microwave Scatterometer (SFMR), and in-situ flight-level sensors installed on the NOAA P-3 and G-IV and Air Force Reserve C-130 aircraft. HEDAS is designed as a state-of-the-art system to carry out research on new data assimilation techniques and to investigate the potential impacts of new observing platforms for hurricane applications. It utilizes an ensemble Kalman filter and is interfaced with NOAA's HWRF model. Using HEDAS, Dr. Aksoy is currently actively carrying out research in parameter estimation, radar data assimilation, and satellite data assimilation.

Dr. Aksoy is also actively involved in serving the atmospheric science community through his editor role for Monthly Weather Review (MWR) published by the American Meteorological Society. MWR is one of the most popular scientific journals in the areas of numerical weather prediction and data assimilation.

Current Research Projects

    Hightlighted Publications

    1. Aksoy, A. Parameter estimation. In Encylopedia of Atmospheric Sciences (2nd edition), G.R. North, J. Pyle, and F. Zhang (eds.). Academic Press, Volume 4, 181-186, doi:10.1016/B978-0-12-382225-3.00494-1 2014
    2. Aksoy, A., S.D. Aberson, T. Vukicevic, K.J. Sellwood, S. Lorsolo, and X. Zhang. Assimilation of high-resolution tropical cyclone observations with an ensemble Kalman filter using NOAA/AOML/HRD’s HEDAS: Evaluation of the 2008-2011 vortex-scale analyses. Monthly Weather Review, 141(6):1842-1865, doi:10.1175/MWR-D-12-00194.1 2013
    3. Aksoy, A., D.C. Dowell, and C. Snyder. A multicase comparative assessment of the ensemble Kalman filter for assimilation of radar observations, Part I: Storm-scale analyses. Monthly Weather Review, 137(6):1805-1824, doi:10.1175/2009MWR3086.1 2009

      Recently Published Peer-Reviewed Papers

      1. Aberson, S.D., A. Aksoy, K.J. Sellwood, T. Vukicevic, and X. Zhang. Assimilation of high-resolution tropical cyclone observations with an ensemble Kalman filter using HEDAS: Evaluation of 2008-2011 HWRF forecasts. Monthly Weather Review, 143(2):511-523, doi:10.1175/MWR-D-14-00138.1 2015
      2. Aksoy, A. Parameter estimation. In Encylopedia of Atmospheric Sciences (2nd edition), G.R. North, J. Pyle, and F. Zhang (eds.). Academic Press, Volume 4, 181-186, doi:10.1016/B978-0-12-382225-3.00494-1 2014
      3. Aksoy, A. Storm-relative observations in tropical cyclone data assimilation with an ensemble Kalman filter. Monthly Weather Review, 141(2):506-522, doi:10.1175/MWR-D-12-00094.1 2013

        Recent Presentations

        1. Aksoy, A., B. Klotz, J. Zhang, E. Uhlhorn, J. Cione, 2014: Model Sensitivity in Idealized, Ocean-Coupled Hurricane Simulations: Perturbations of Environment, Structure, and Model Physics Parameters. The 31st Conference on Hurricanes and Tropical Meteorology, April 2014, San Diego, California, American Meteorological Society.
        2. Aksoy, A., 2013: Vortex-Scale Data Assimilation with HEDAS in the 2013 Season and Impacts of Parameter Perturbations. NOAA Hurricane Forecast Improvement Project Biweekly Teleconference, December 2013, Miami, Florida.
        3. Aksoy, A., 2013: Parameter Sensitivity for Idealized Coupled HWRF Simulations in a Sheared Environment. NOAA Hurricane Forecast Improvement Project Annual Review, June 2013, Miami, Florida.

        Awards and Honors

        2012Certificate of RecognitionU.S. Department of Commerce NOAA/AOML
        2011Monthly Weather Review Editor’s AwardAmerican Meteorological Society
        2011Group Achievement Award to Genesis and Rapid Intensification ProcessesNASA
        2011Certificate of RecognitionU.S. Department of Commerce NOAA/AOML
        2003College of Geosciences Graduate Excellence ScholarshipTexas A&M University
        2002Mr./Mrs. Kenneth P. Pike FellowshipTexas A&M University
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