HRD at the American Meteorological Society Centennial Meeting

HRD scientists recently attended the 100th American Meteorological Society Meeting in Boston. There, they presented 33 oral presentations and 10 posters. Left to right: Mu-Chich Ko, Andrew Kren, Joe Cione, Karina Apodaca, Michael Mueller, Sarah Ditchek, Steve Diaz, Jonathan Zawislak, Andy Hazelton, Lisa Bucci, Frank Marks, Shirley Murillo, Xuejin Zhang, John Cortinas, Eric Uhlhorn, and … Continue reading HRD at the American Meteorological Society Centennial Meeting

Paper on the unusual eyewall replacement cycles in Hurricane Irma released online in Monthly Weather Review

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

Paper on the intensification of tropical cyclones in wind shear published in Mausam

Hurricanes are fed by energy from the warm ocean. The center of a hurricane is surrounded by tall clouds, called cumulus clouds, that produce the heat needed to keep the spin, what we call vorticity, in the hurricanes going. When there are a lot of cumulus clouds around the hurricane's center, the hurricane spins more rapidly. However, … Continue reading Paper on the intensification of tropical cyclones in wind shear published in Mausam

HRD Monthly Science Meeting of December 2019

December’s science meeting, hosted by the National Hurricane Center, consisted of seven presentations: Michael Brennan (NHC): “NHC Forecast Verification and Challenges”Mark DeMaria (NHC): “A New Method for Creating a 2-D Surface Wind Field from the NHC Official Forecast”James Franklin (NHC): “HFIP Performance Measure For Rapid Intensification”Mu-Chieh (Laura) Ko (HRD): “A Review of Support Vector Machine … Continue reading HRD Monthly Science Meeting of December 2019

AOML Flies Science Missions into Succession of Atlantic Storms

“Many of the storms we flew in 2019 were ‘living on the edge,’ in that they were weak, vertically sheared, but also unpredictable. In previous years, we saw these storms intensify, such as Hurricane Michael in 2018. This season, many struggled to intensify. As we continue to build a dataset of these sheared storms, we … Continue reading AOML Flies Science Missions into Succession of Atlantic Storms

HRD Monthly Science Meeting of November 2019

November’s science meeting consisted of four presentations: Andy Hazelton -  “Global-Nested HAFS 2019 Real-time Demo Results” Ghassan Alaka - "2019 Basin-scale HWRF (HWRF-B): An HFIP Real-Time Demonstration Project on WCOSS" James Hlywiak -  “Sensitivities of the Decay of the Near-Surface Tropical Cyclone Wind Field to Inland Surface Roughness and Soil Moisture“ Rob Rogers -  “A comparison of a … Continue reading HRD Monthly Science Meeting of November 2019

2019 Hurricane Field Program Season in Review and Hotwash, 13 November 2019

The purpose of the season review and "hotwash" is to review the highlights from the season and discuss what went right / what went wrong / and what could be done better in the future with respect to Hurricane Field Program operations/plans/logistics, as well as provide feedback to AOC about the aircraft and their operations. … Continue reading 2019 Hurricane Field Program Season in Review and Hotwash, 13 November 2019

HRD Seminar – Alrick Green, NERTO – San Jose State University – 12 November 2019

Alrick, participating in the NOAA Experiential Research and Training Opportunities (NERTO) program, presented a seminar titled “Understanding the Role of Eddy Vorticity Fluxes on the Rapid Intensification of Hurricane Irma (2017) and Michael (2018)”.  ABSTRACT The relationship between rapid intensification and environmental forcing is investigated for Hurricane Irma (2017) and Hurricane Michael (2018) using the … Continue reading HRD Seminar – Alrick Green, NERTO – San Jose State University – 12 November 2019

Scientists show how Hurricane Edouard in 2014 rapidly intensified despite wind shear and dry air in paper released online in The Journal of the Atmospheric Sciences

Summary:  Tropical cyclones (TCs) usually weaken when there is a large change in the wind speed or direction with height (wind shear) or when there is dry air in the core.  Some TCs, like Hurricane Edouard (2014) can intensify, even rapidly, under these conditions. We use a series of model runs to understand how a … Continue reading Scientists show how Hurricane Edouard in 2014 rapidly intensified despite wind shear and dry air in paper released online in The Journal of the Atmospheric Sciences