Summary: Accurate forecasts of hurricane strength are necessary to protect people in the path of a storm. The strongest winds in a hurricane are found near the center of the storm, in a ring of dangerous weather called the eyewall. As a hurricane grows older, it is common for the eyewall to eventually weaken and get … Continue reading Paper on the unusual eyewall replacement cycles in Hurricane Irma released online in Monthly Weather Review
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
Prof. Didlake presented a seminar titled “Asymmetric aspects of secondary eyewall formation in tropical cyclones”. A recording of the presentation is available on the anonymous ftp site: ftp://ftp.aoml.noaa.gov/hrd/pub/blog/seminars/2019/Didlake_HRD_Seminar_20190211.mp4
Also, hurricane seasonal forecasts and summer interns at AOML. Read about these topics and more at http://www.aoml.noaa.gov/keynotes/PDF-Files/July-Aug2018.pdf.
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 August 2018
Summary: When hurricanes become strong, they sometimes form a second eyewall around the main eyewall. This second ring of strong winds and heavy rain means that strong, damaging winds could cover a larger area than before. However, it also means that the storm might temporarily weaken. Understanding and predicting this process is therefore very important. … Continue reading Paper on how eyewall replacement cycles start published in The Journal of the Atmospheric Sciences
Read the paper online at https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2017JD027771.
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
May’s science meeting consisted of three presentations: Jonathan Zawislak - The Relationship Between Observed Thermodynamic and Precipitation Properties During TC Intensity Change Paul Reasor - Vortex Alignment Processes in Vertically-Sheared Tropical Storms John Kaplan - Statistical Rapid Intensification Model Development: Recent Results and Efforts to Include Storm Structure All the presentations are available on the … Continue reading HRD Monthly Science Meeting of May 2018
Summary: NOAA Hurricane Hunter aircraft have a Doppler radar that measures wind through the entire hurricane. We analyzed these radar data collected in many hurricanes since 2004. Previous studies found that the location of the fastest upward moving air (what we call updrafts) may tell us how strong the storm will be a few hours … Continue reading Paper on updrafts in hurricanes and how they relate to intensity changes published in Monthly Weather Review