HRD observation team monthly meeting – 15 August 2019

The purpose of the observation team meetings is to bring together the people who use observations in their research on a regular basis to discuss issues they’re having, provide updates on observations they’re analyzing or collecting, and any other information that may be of interest to the broader group.  These meetings are also an excellent … Continue reading HRD observation team monthly meeting – 15 August 2019

Jun Zhang and Rob Rogers honored with Banner I. Miller Award

The American Meteorological Society has announced that Dr. Jun Zhang, Dr. David S. Nolan, Dr. Robert F. Rogers, and Dr. Vijay S. Tallapragada have won the 2020 Banner I.  Miller Award for their paper, “Evaluating the impact of improvements in the boundary layer parameterization on hurricane intensity and structure forecasts in HWRF,” which significantly advanced … Continue reading Jun Zhang and Rob Rogers honored with Banner I. Miller Award

Paper on how downdrafts in hurricanes affect intensity released online in Monthly Weather Review

Summary: This study looks at differences between tropical cyclones that strengthen and those that do not using data collected by dropsondes, small instruments released from hurricane hunter aircraft that measure wind, temperature, and moisture as they fall to the surface. Important Conclusions: 1. The fuel that supports tropical cyclones is the heat and moisture from … Continue reading Paper on how downdrafts in hurricanes affect intensity released online in Monthly Weather Review

HRD Seminar – George “Trey” Alvey, CIMAS/HRD – 16 July 2019

Trey presented a seminar titled “How do sheared tropical cyclones evolve towards symmetry before rapid intensification?" ABSTRACT: In seemingly similar environments, some moderately sheared tropical storms undergo rapid intensification (RI) evolving towards more symmetrical precipitation structures but others do not. What role do the vortex tilt, humidification, and precipitation symmetry play in helping distinguish those … Continue reading HRD Seminar – George “Trey” Alvey, CIMAS/HRD – 16 July 2019

HRD Seminar – Addison Alford, University of Oklahoma – 17 June 2019

Addison presented a seminar titled "Radar Observations of Landfalling Hurricanes: Synthesizing Three Years of SMART Radar Missions" ABSTRACT: The Shared Mobile Atmospheric Research and Teaching radars observed five landfalling tropical cyclones (TCs) from 2016-2018. The observations were largely targeted toward understanding asymmetric convective and dynamic processes. Such processes are thought to lead to the intensification … Continue reading HRD Seminar – Addison Alford, University of Oklahoma – 17 June 2019

HRD Monthly Science Meeting of June 2019

June’s science meeting consisted of eight presentations: George Halliwell: Impact of the Anomalously Warm Gulf of Mexico on Hurricane Michael (2018) Intensity Kathryn Sellwood: How do we get good data from Dropsondes? Nicolas Johnson (Hollings Scholar, UAH): Estimating Hurricane Surface Winds Addison Alford (OU): Structural Changes in the Hurricane Boundary Layer at Landfall Renee Richardson … Continue reading HRD Monthly Science Meeting of June 2019

HRD Monthly Science Meeting of May 2019

May’s science meeting consisted of seven presentations: Kelly Ryan: Projects featuring collaboration and consultation on OSEs, OSSEs, data visualization, and machine learning William Ramstrom: Nest Development for FV3 Michael Fischer: Potential mechanisms for two secondary eyewall formation events in Hurricane Irma (2017) Kelly Nunez (PSU): PV budget analysis of high resolution simulations to understand the … Continue reading HRD Monthly Science Meeting of May 2019

HRD Monthly Science Meeting of February 2019

February’s science meeting consisted of four presentations: Paul Reasor - "Estimating Wind Radii from Tail Doppler Radar" John Kaplan - "Gust Factor Distributions in Hurricanes Harvey and Irma, a Preliminary Analysis Michael Fischer - "Characteristics of Tropical Cyclone Rapid Intensification Events in Environments of Upper-Tropospheric Troughs" Xiaomin Chen - "Structural Changes Leading to Rapid Intensification … Continue reading HRD Monthly Science Meeting of February 2019