Professional Interests

My interests include: Tropical cyclones and their genesis, African Easterly Waves, aircraft observations including SFMR and Doppler radar, data assimilation of TC observations, track and intensity forecasts of tropical cyclones

Current Research Projects

• Advanced model diagnostics of tropical cyclone inner-core structure using aircraft observations
• Advanced prediction and modeling
• CIMAS Contributions to OAR Disaster Recovery Act Projects
• Data Rescue
• Development of Multiple Moving Nests Within a Basin-Wide HWRF Modeling
• Environmental and inner-core vertical shear TC impacts
• Environmental flow impacts on tropical cyclone inner-core structure
• Extra-tropical transition
• Hurricane Regional and Global Model Evaluation and Improvement Project
• Hurricane Surface Winds
• Inner-core structure of rapidly intensifying tropical cyclones
• Meso- and Miso-scale structures in the eye and eyewall of major hurricanes
• Model Error in HWRF Surface Layer and Boundary Layer Parameterizations
• Observations and modeling of ocean response to Hurricane Edouard (2014)
• Observing System Experiments with aircraft data
• Optimization of the NOAA G-IV Surveillance Aircraft Flight Patterns through Observing System Simulation Experiments
• Real-time Doppler winds
• Saharan Air Layer
• Services to Support the Hurricane Forecast Improvement Project
• SFMR Surface Wind Improvement in Heavy Rain Conditions
• SHIPS Rapid Intensification Index
• Storm-Relative Data Assimilation
• Using NOAA UAS Assets and OSSE/DA Capabilities to Improve Sampling Strategies and Numerical Prediction of Tropical Cyclone Track, Intensity, and Structure
• Vortex-Scale Data Assimilation With HEDAS

Hightlighted Publications

1. Klotz, B.W., and E.W. Uhlhorn. Improved stepped frequency microwave radiometer tropical cyclone surface winds in heavy precipitation. Journal of Atmospheric and Oceanic Technology, 31(11):2392-2408, doi:10.1175/JTECH-D-14-00028.1 2014.
2. Klotz, B. W., and H. Jiang, 2017: Examination of Surface Wind Asymmetries in Tropical Cyclones: Part I. General Structure and Wind Shear Impacts. Mon. Wea. Rev., 145, 3989–4009, doi: 10.1175/MWR-D-17-0019.1.
3. Klotz, B. W., and H. Jiang, 2016: Global composites of surface wind speeds in tropical cyclones based on a 12 year scatterometer database. Geophys. Res. Lett., 43, 10,480–10,488.

Recently Published Peer-Reviewed Papers

1. Aguilar, C., I.C. Enochs, K. Cohen, L. Chomiak, G. Kolodziej, A. Baker, and D. Manzello. Understanding differential heat tolerance of the threatened mountainous star coral Orbicella faveolata from inshore and offshore reef sites in the Florida Keys using gene network analysis. PLOS Climate, 3(11):e0000403, https://doi.org/10.1371/journal.pclm.0000403 2024
2. Aksoy, A. A Monte Carlo approach to understanding the impacts of initial-condition uncertainty, model uncertainty, and simulation variability on the predictability of chaotic systems: Perspectives from the one-dimensional logistic map. Chaos, 34(1):011102, https://doi.org/10.1063/5.0181705 2024
3. Alaka, G.J. Jr., J.A. Sippel, Z. Zhang, H.-S Kim, F. Marks, V. Tallapragada, A. Mehra, X. Zhang, A. Poyer, and S.G. Gopalakrishnan. Lifetime performance of the operational Hurricane Weather Research and Forecasting model (HWRF) for North Atlantic tropical cyclones. Bulletin of the American Meteorological Society, 105(6):E932-E961, https://doi.org/10.1175/BAMS-D-23-0139.1 2024