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

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

Recently Published Peer-Reviewed Papers

  1. 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
  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

Manuscripts in Review

  1. Aksoy, A, 2013: Parameter Estimation in Atmospheric Sciences. Accepted to be published in Encyclopedia of Atmospheric Sciences, 2nd ed., G. R. North, Ed.
  2. Aksoy, A., E. Uhlhorn, J. Zhang, B. Klotz, J. Cione, 2013: Idealized Tropical Cyclone Simulations Initialized with an Observation-Based Axisymmetric Vortex. To be submitted to the Journal of the Atmospheric Sciences.

    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.
    4. Aksoy, A., T. Vukicevic, J. D. Whitaker, S. G. Gopalakrishnan, and S. D. Aberson, 2012: Recent Advances in vortex-scale data assimilation using NOAA/AOML/HRD's HWRF Ensemble Data Assimilation System (HEDAS). The 30th Conference on Hurricanes and Tropical Meteorology, April 2012, Ponte Vedra Beach, Florida, American Meteorological Society.
    5. Aksoy, A., 2012: Assimilation of high-resolution hurricane inner-core data with the HWRF Hurricane Ensemble Data Assimilation System (HEDAS): Evaluation of the 2008-2011 vortex-scale analyses. National Hurricane Center Seminar, February 2012, 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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