Two part paper on convective bursts in hurricanes published in Monthly Weather Review

These two papers analyze extreme upward air currents, called “convective bursts,” in hurricanes that have been believed to be important for hurricane intensification. We use the Weather Research and Forecasting (WRF) model to look at convective bursts in two hurricanes: Hurricane Dean from 2007 and Hurricane Bill from 2009. In the first paper, we study […]

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Paper on easterly waves in the Eastern Pacific that can form into tropical cyclones published in The Journal of the Atmospheric Sciences

“Easterly waves” are areas of low air pressure in the tropics that move westward and may become tropical cyclones. The most well-known type of easterly wave is the “African easterly wave,” which moves from West Africa north of the equator into the Atlantic Ocean and sometimes into the Pacific. Although almost all Northeast Pacific tropical […]

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HRD seminar – Alex Fierro, University of Oklahoma/CIMMS and NSSL – 25 September 2015

Alex presented a seminar “A cloud-scale lightning data assimilation technique implemented within the WRF-ARW model: Proof of concept and real-time evaluation” Abstract: To improve the analysis and short-term forecasts of convection, a new technique for assimilating total lightning data into the WRF-ARW model at cloud-resolving scales has been developed and evaluated over a large number […]

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HRD seminar – Jian-Wen Bao, ESRL/PSD – 24 September 2014

Jian-Wen presented a seminar on “Microphysics Parameterization Evaluation: An NWP Model Critic’s Perspective”. Abstract Despite the fact that microphysics parameterization schemes used in numerical weather prediction (NWP) models can be as complex as being capable of resolving the evolution of hydrometeor size spectra, operational centers still cannot computationally afford to run any NWP models with […]

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HRD seminar – Ghassan “Gus” Alaka, Colorado State University – 8 September 2014

Gus presented a seminar on “Intraseasonal Variability of African Easterly Wave”. Abstract African easterly waves (AEWs) and associated perturbation kinetic energy (PKE) exhibit significant intraseasonal variability in tropical North Africa during boreal summer. Since AEWs are seed disturbances to Atlantic tropical cyclones, oscillations in AEW activity in West Africa directly impact tropical cyclogenesis in the […]

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HRD Seminar: Dr. Krishna Kishore Osuri, Indian Institute of Technology, Bhubaneswar – 13 March 2014

Dr. Osuri presented a seminar on “Extreme Weather Events over India: Mesoscale assimilation and prediction”. A copy of the presentation is available on the anonymous ftp site: ftp://ftp.aoml.noaa.gov/hrd/pub/blog/seminars/2014/Krishna_HRD_presentation_13March2014-Final.ppt

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