The Saharan Air Layer: What is it? Why does NOAA track it?

As we move through the 2020 Atlantic Hurricane Season, you will no doubt hear a lot about the Saharan Air Layer—a mass of very dry, dusty air that forms over the Sahara Desert during the late spring, summer and early fall. This layer can travel and impact locations thousands of miles away from its African … Continue reading The Saharan Air Layer: What is it? Why does NOAA track it?

HRD Debrief for missions into EP95/Pre-Ivo in collaboration with OTREC – 3 March 2020

HRD researchers and our collaborators from the NSF-sponsored Organization of Tropical Eastern Pacific Convection (OTREC) experiment discussed the results from the 4 P-3 and 3 NCAR G-V HIAPER missions into EP95 which eventually became Hurricane Ivo in the Eastern Pacific. IFEX flew 4 P-3 missions from Liberia, Costa Rica into the disturbance that became Ivo, … Continue reading HRD Debrief for missions into EP95/Pre-Ivo in collaboration with OTREC – 3 March 2020

HRD Debrief for missions into Hurricane Dorian – 30 January 2020

HRD researchers discussed the results from the 15 P-3 and 10 G-IV missions into Hurricane Dorian, AL05 (26 August - 5 September 2019). The format of the debrief was different than in the past. A brief overview is provided of the storm and missions, followed by a series of 8 short presentations discussing planned and … Continue reading HRD Debrief for missions into Hurricane Dorian – 30 January 2020

Paper on daily changes in hurricanes published in Geophysical Research Letters

Summary: The very tall clouds that we see in satellite pictures of tropical cyclones (also known as hurricanes) fan out from the hurricane's center over the course of each day, what we call a diurnal cycle. This is because a pulse of thunderstorms and rain forms near the hurricane center each night and steadily moves … Continue reading Paper on daily changes in hurricanes published in Geophysical Research Letters

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 celebrates Aloha Friday

While the P3s are gathering data in Tropical Storm Nestor, HRD and friends celebrated the last regularly scheduled map discussion of the year with our annual Aloha Friday celebration.  This year's map discussion were presented by scientists and students from HRD, the Cooperative Institute for Marine and Atmospheric Studies/University of Miami, Penn State, San Jose … Continue reading HRD celebrates Aloha Friday

Jason Dunion’s presentation at the most recent AMS Hurricane Conference highlighted in the December 2018 issue of the AMS Bulletin

At the recent American Meteorological Society Conference on Hurricanes and Tropical Meteorology, Jason presented his work with co-authors Chris Thorncroft, Chris Velden, and Brian McNoldy about the diurnal cycle of convection in hurricanes.  This cycle is a dramatic outward expansion of clouds that begins moving away from the storm center each day around sunset and … Continue reading Jason Dunion’s presentation at the most recent AMS Hurricane Conference highlighted in the December 2018 issue of the AMS Bulletin