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
Tag: Hurricane Ensemble Data Assimilation System (HEDAS)
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
AOML and HRD researchers at 33rd AMS Conference on Hurricanes and Tropical Meteorology, Ponte Vedra, FL – 15-20 April 2018
Thirty-one AOML and HRD scientists participated in the recent 33rd AMS Conference on Hurricanes and Tropical Meteorology in Ponte Vedra, FL, as authors or co-authors on 65 presentations and 19 posters. Roughly 783 presentations (507 oral presentations in 67 sessions and 276 posters in 2 session) were submitted to the conference. Of the 567 TC-related presentations … Continue reading AOML and HRD researchers at 33rd AMS Conference on Hurricanes and Tropical Meteorology, Ponte Vedra, FL – 15-20 April 2018
HRD Monthly Science Meeting of April 2018
April’s science meeting consisted of five presentations: Andrew Kren - Impact of Global Hawk dropsonde data assimilated in the NCEP GFS model during SHOUT: Hurricanes Matthew and Nicole in 2016 Hui Christophersen - Impact of Global Hawk Dropsondes on Tropical Cyclone Analyses and Forecasts Sim Aberson - 1-km HEDAS analysis of Hurricane Patricia just after peak … Continue reading HRD Monthly Science Meeting of April 2018
HRD Monthly Science Meeting of January 2018
January’s science meeting consisted of three presentations: Jon Zawislak: Preliminary results on the sources of condensate in the hurricane outflow layer Sim Aberson: Observations of gravity waves in tropical cyclones Jason Dunion: Assessing tropical cyclone intensity change in moderate vertical wind shear using dropsondes: thermodynamics of the lower troposphere All the presentations are available on … Continue reading HRD Monthly Science Meeting of January 2018
Paper on Hurricane Patricia, the most intense hurricane ever recorded in the Western Hemisphere, published in the Bulletin of the American Meteorological Society
In October 2015, off the west coast of Mexico, Hurricane Patricia became the strongest hurricane ever recorded in the western hemisphere, intensifying faster than any other storm on record. A unique set of observations were collected in Patricia. National Oceanic and Atmospheric Administration (NOAA) and National Aeronautics and Space Administration/Office of Naval Research (ONR) aircraft … Continue reading Paper on Hurricane Patricia, the most intense hurricane ever recorded in the Western Hemisphere, published in the Bulletin of the American Meteorological Society
Paper on accounting for the location of dropwindsondes during measurements published in the Journal of Atmospheric and Oceanic Technology
Summary: Hurricane Hunter aircraft have been releasing instruments called dropwindsondes to measure pressure, temperature, moisture, and wind speed and direction in hurricanes for two decades. Data from dropwindsondes released near the storms have led to better forecasts of where they will go, but improvements to forecasts of how strong they will get have lagged. Part … Continue reading Paper on accounting for the location of dropwindsondes during measurements published in the Journal of Atmospheric and Oceanic Technology
Paper on a new, efficient way to do ensemble-based data assimilation published in the Journal of Atmospheric and Oceanic Technology
HRD Monthly Science Meeting of July 2017
July’s science meeting consisted of 6 presentations: Steve Guimond (NASA) - "Reviving the Imaging Wind and Rain Airborne Profiler (IWRAP) for Hurricane Research: A Case Study of Hurricane Rita (2005)" Mu-Chieh (Laura) Ko - "Preliminary Review – HWRF-B 2016 Retrospective Dataset" Robert Rogers - "The Challenge of Intensity Forecasting in Moderate Shear" Emily Paltz (Hollings … Continue reading HRD Monthly Science Meeting of July 2017
