HRD Monthly Science Meeting of September 2020

September's science meeting consisted of three presentations:  Andy Hazelton - "HAFSV0.1B (HAFS-globalnest) performance for Hurricane Laura: Verification and Evaluation of TC structure"Evan Forde - “Identification of Atlantic Basin Tropical Cyclones in Proximity to Significant Dry Air Events in Total Precipitable Water Imagery (1987-2015)”Sim Aberson - "In Search of the Elusive Eyewall Me/iso-scale ?" The three presentations are … Continue reading HRD Monthly Science Meeting of September 2020

HRD Monthly Science Meeting of June 2020

June's science meeting consisted of six presentations: Jason Sippel: "Some thoughts about recent G-IV impact results" Sarah Ditchek: "Quantifying the Radial Impact of Dropsondes Using the Basin-Scale HWRF" Dave Nolan: "Evaluation of the Surface Wind Field Over Land in WRF Simulations of Hurricane Wilma (2005)" Lakemariam Worku: "Forecasting a Continuum Environmental Threats - Tropical Cyclone … Continue reading HRD Monthly Science Meeting of June 2020

HRD Monthly Science Meeting of May 2020

May's science meeting consisted of six presentations: Michael Fischer: An examination of local shear, vortex tilt, and tropical cyclone intensity change using airborne radar observations Erica Bower: Towards an Automated Approach to Analyzing Extreme Precipitation and Tropical Cyclones Hua Leighton: Ice Particle Size Distributions from Composites of Microphysics Observations Collected in Tropical Cyclones Laura Ko: … Continue reading HRD Monthly Science Meeting of May 2020

HRD Seminar – Dr. Altug Aksoy (CIMAS/HRD) – 3 March 2020

Dr. Aksoy presented a seminar titled “Assimilation of Coyote UAS Observations in Hurricane Maria (2017): Optimization of Data Impact”. ABSTRACT The Coyote is a low-altitude small unmanned aircraft system (sUAS) that is air-launched from the NOAA WP-3D (P-3) hurricane hunter aircraft through its existing standard A-size sonobuoy launch capability. Its meteorological sensors directly measure temperature, … Continue reading HRD Seminar – Dr. Altug Aksoy (CIMAS/HRD) – 3 March 2020

HRD Monthly Science Meeting of February 2020

February’s science meeting consisted of seven presentations: Kyle Ahern: Simulated Boundary Layer Structure in Hurricane Earl (2010) After Peak Intensity Udai Shimada: Self-Introduction and Research Plans at HRD Levi Cowan: Comparison of Atlantic Tropical Cyclone Interactions with Upper Tropospheric Jets During Intensification and Weakening Sim Aberson: Multiple vortices as seen in Tropical Cyclone Rina on … Continue reading HRD Monthly Science Meeting of February 2020

HRD Debrief for missions into Hurricane Dorian – 30 January 2020

HRD researchers discussed the results from the 15 P-3 and 10 G-IV missions into Hurricane Dorian, AL05 (26 August - 5 September 2019). The format of the debrief was different than in the past. A brief overview is provided of the storm and missions, followed by a series of 8 short presentations discussing planned and … Continue reading HRD Debrief for missions into Hurricane Dorian – 30 January 2020

HRD Monthly Science Meeting of October 2019

October’s science meeting consisted of seven presentations: Sim Aberson -  “A comparison of SAMURAI, HEDAS, and radar analyses for Hurricane Patricia (and a sneak peek into Dorian)” Lisa Bucci - "Understanding the response of tropical cyclone structure to the assimilation of synthetic wind profiles" Hui Christophersen - "TROPICS Radiance OSSE Update" Xiaomin Chen -  “A … Continue reading HRD Monthly Science Meeting of October 2019

HRD Seminar – Jeff Steward, UCLA / National Central University in Taiwan – 25 June 2019

Jeff presented a seminar titled “Solving the Ensemble Square-Root Kalman Filter equations using matrix functions without an actual matrix - the "perfect" large-scale, scalable parallel method to assimilate all-sky satellite radiances in an ensemble” ABSTRACT: All-sky (clear or cloudy) satellite radiances are difficult to assimilate, but have a huge potential to improve NWP forecasts such … Continue reading HRD Seminar – Jeff Steward, UCLA / National Central University in Taiwan – 25 June 2019

HRD Monthly Science Meeting of April 2019

April’s science meeting consisted of four presentations: Sim Aberson - A Preliminary Look at High-resolution HEDAS analyses of Pre-Sergio (2018) Xuejin Zhang - Development of Moving Nest in FV3GFS Ghassan Alaka - HWRF Verification: Overall Progress & 2018 Highlights Lisa Bucci - Exploring TC Predictability in an OSSE framework Three of the four presentations are … Continue reading HRD Monthly Science Meeting of April 2019

Paper on the impact of dropwindsondes from the Global Hawk on forecasts published in Monthly Weather Review

Summary:  A drone, what we call an unmanned aircraft system, can collect data in tropical cyclones (TCs) to improve forecasts.  Scientists have used the Global Hawk drone that can fly at an altitude of up to 60,000 feet for over 24 hours at a time since 2010. The Global Hawk releases dropwindsondes that measure wind, … Continue reading Paper on the impact of dropwindsondes from the Global Hawk on forecasts published in Monthly Weather Review