Paper on how tropical cyclones can intensify in high shear released online in Monthly Weather Review

When the wind within about 150 miles of the center of a tropical cyclone (what we call the near environment) is very different at the bottom and the top of the storm (what we call wind shear), the storm usually weakens, especially if the storm is already weak. However, sometimes this doesn't happen, and the … Continue reading Paper on how tropical cyclones can intensify in high shear released online in Monthly Weather Review

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 2018

June’s science meeting consisted of three presentations: Sim Aberson – Extreme horizontal and vertical motions measured by dropsondes in tropical cyclones:  2017 update Erin Jones – Quantifying Spiral Gravity Waves Radiating from Tropical Cyclones Robert Rogers – Tropical Cyclone Vortex Development in Moderate Shear All the presentations are available on the anonymous ftp site at: ftp://ftp.aoml.noaa.gov/hrd/pub/blog/meetings/2018/Science/HRD_SciMeet_20180614.zip

NOAA Hurricane Research overview for WMO Region IV Training Workshop, NHC – 26 February 2018

To demonstrate how tropical cyclone research is used to improve forecast guidance HRD researchers Drs. Frank Marks, Robert Rogers, and Jason Sippel presented summaries of “NOAA’s Hurricane Research”, “Aircraft Observations of Tropical Cyclones”, and  "Tropical Cyclone Modeling and Data Assimilation"  to the World Meteorological Organization Regional Association IV Training Workshop held in the National Hurricane … Continue reading NOAA Hurricane Research overview for WMO Region IV Training Workshop, NHC – 26 February 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

Jason Sippel attends the 18th Cyclone Workshop in Sainte Adele, Quebec

The Cyclone Workshop (1-6 October) provides a forum for discussions on current research topics in the field of synoptic and mesoscale meteorology.  The Workshop is organized by and for researchers and operational meteorologists, and covers a broad range of topics including: extratropical cyclone lifecycles, global dynamics and energetics, severe local storms, tropical-extratropical interactions, tropical cyclone … Continue reading Jason Sippel attends the 18th Cyclone Workshop in Sainte Adele, Quebec

HRD Monthly Science Meeting of April 2017

April’s science meeting consisted of 6 presentations: Gus Alaka: 2016 Basin-Scale HWRF MET-TC Verification 2016 Atlantic Basin Xuejin Zhang: Basin-scale HWRF Verification Mu-Chieh Ko (Laura): HIWPP Precipitation Evaluation – Selected cases of 2016 Atlantic Hurricane Season Kathryn Sellwood: Assimilating Hurricane Imaging Radiometer (HIRAD) Surface Wind Speeds for Analyses and Forecasts of Tropical Cyclones Pete Finocchio … Continue reading HRD Monthly Science Meeting of April 2017

HRD observation team monthly meeting – 16 February 2017

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 – 16 February 2017

HRD scientists participate in HFIP Annual Review, NHC, Miami, FL – 11-12 January 2017

The HFIP program is coordinated through 3 strategic planning teams (Model Development, Data Assimilation/Ensemble, and Post Processing and Verification Development) and 3 tiger teams (High Resolution Physics, Ensemble Product, and Ocean Model Impact). The HFIP strategic planning teams develop our multi-year strategy for improving hurricane forecast guidance, while the tiger teams are responsible for overseeing … Continue reading HRD scientists participate in HFIP Annual Review, NHC, Miami, FL – 11-12 January 2017