Study on the impact of mountains on rainfall and intensity of tropical cyclones published in Monthly Weather Review

This paper explores the effect of mountainous terrain on the structure of a tropical cyclone eyewall by using a numerical model to simulate the landfall of a typhoon in the Central Mountain Range (CMR) of Taiwan and its reemergence over water after crossing the CMR. It was found that the presence of the CMR disrupted … Continue reading Study on the impact of mountains on rainfall and intensity of tropical cyclones published in Monthly Weather Review

Paper on observations of updrafts in hurricanes from NOAA Hurricane Hunter aircraft published in The Journal of Geophysical Research

This study uses NOAA airborne Doppler radar data to tie together the many different characteristics of convective rainband updrafts that have been documented, both by observations and from modeling studies. The results help shed light on how these updraft circulations are organized and what underlying dynamics might contribute to the observed organization. You can access … Continue reading Paper on observations of updrafts in hurricanes from NOAA Hurricane Hunter aircraft published in The Journal of Geophysical Research

Rob Rogers gave invited presentation at the opening ceremony for the Asia-Pacific Typhoon Collaborative Research Center (AP-TCRC) – 29 November 2021

On 29 November, 2021, Rob Rogers gave an invited virtual talk entitled "Advances in the Understanding and Prediction of Tropical Cyclone Intensity Change from Airborne Observations" at a new international joint tropical cyclone research organization, named the Asia-Pacific Typhoon Collaborative Research Center (AP-TCRC). The AP-TCRC is supported by the ESCAP/WMO Typhoon Committee (the Committee) and … Continue reading Rob Rogers gave invited presentation at the opening ceremony for the Asia-Pacific Typhoon Collaborative Research Center (AP-TCRC) – 29 November 2021

Flights continue in Hurricane Ida

NOAA has so far completed five flights into and around Hurricane Ida as it crossed over the Cayman Islands and western Cuba toward its forecast landfall along the Louisiana coast. Two synoptic surveillance missions were conducted by the NOAA G-IV high-altitude aircraft to gather dropwindsonde and Doppler radar data around the hurricane to be ingested … Continue reading Flights continue in Hurricane Ida

NOAA Hurricane Hunters fly into and around Fred, Grace, and Henri, and gear up for the next system

NOAA Hurricane Hunters completed 6 missions into Tropical Storm Fred, and 11 and 7 missions in and around Hurricanes Grace and Henri, respectively. The first mission into Fred occurred before the system had a well-defined center and was not yet named a tropical depression. Subsequent missions sampled the dry air and wind shear around Fred … Continue reading NOAA Hurricane Hunters fly into and around Fred, Grace, and Henri, and gear up for the next system

Study shows for the first time how and where dry air in the tropical cyclone core can impact intensity. Paper published in The Journal of the Atmospheric Sciences

In the middle atmosphere in and around tropical cyclones, around 2 to 5 km above the surface, air is cooler and drier than near the ocean surface. It is well known that this cool, dry air can be brought down toward the surface by heavy rain in thunderstorms, where the air flows toward the tropical … Continue reading Study shows for the first time how and where dry air in the tropical cyclone core can impact intensity. Paper published in The Journal of the Atmospheric Sciences

HRD Monthly Science Meeting of July 2021

July's science meeting consisted of five presentations: Sophie Grimsley (Lapenta Intern): "Project Check-in: Hurricane Intensity Change and Boundary Layer Processes" Nick Mesa (Lapenta Intern): "Investigating Intensity Changes Related to Thermodynamic Processes Using Near-coincident Aircraft and Satellite Observations" Laura Ko: "A Consensus Machine Learning Model for Hurricane RI Probabilistic Predictions" Sim Aberson: "Including High-Resolution AMVs in … Continue reading HRD Monthly Science Meeting of July 2021

HRD scientists participate in the 34th American Meteorological Society Conference on Hurricanes and Tropical Meteorology

34th Conference on Hurricanes and Tropical Meteorology Virtual Meeting The 34th AMS Conference on Hurricanes and Tropical Meteorology was held virtually 10-14 May after being postponed from 2020. This is the premiere meeting for operational and research scientists who work on understanding and forecasting tropical cyclones and other tropical weather around the world. HRD scientist … Continue reading HRD scientists participate in the 34th American Meteorological Society Conference on Hurricanes and Tropical Meteorology