Summary: When tropical cyclones move out of the tropics toward the poles, they reach areas where fronts exist and where the ocean, whose warm water fuels tropical storms, is relatively cool. When this happens, the storms go through extratropical transition (ET) and become like other storms in the mid latitudes. The storms can cause catastrophic […]
Category Archives: Dynamics and Physics
HRD researchers discussed the results from the two P-3 and one Global Hawk mission into Hurricane Franklin (8-9 August 2017). The agenda for the discussion was: Mission Overview (Reasor) Science Discussions 20170808H1 (Zawislak) 20170809H1 (Rogers) EMC input (Sippel) Additional field program issues Slides from the debrief are available at: ftp://ftp.aoml.noaa.gov/pub/hrd/blog/meetings/2017/HFP/franklin17_debrief_main.pptx
Summary: Scatterometers are instruments on aircraft or satellites that are used to measure wind speed and direction at the ocean surface. In this follow-up to a 2016 study, the surface wind in tropical cyclones around the world are studied using a large set of measurements from 2000 to 2011. The impact of tropical cyclone intensity, […]
Read the entire article at http://onlinelibrary.wiley.com/doi/10.1002/2016JC012399/full.
Intensity Forecast Experiment (IFEX) Program Director Paul Reasor and HRD Director Frank Marks briefed the Aircraft Operations Center (AOC) personnel at their brand new facility at Lakeland Linder Regional Airport on IFEX plans for 2017 and Hurricane Forecast Improvement Project progress, respectively. The two presentations are available in a .zip archive on the anonymous ftp […]
July’s science meeting consisted of 6 presentations: Steve Guimond (NASA) – “Reviving the Imaging Wind and Rain Airborne Profiler (IWRAP) for Hurricane Research: A Case Study of Hurricane Rita (2005)” Mu-Chieh (Laura) Ko – “Preliminary Review – HWRF-B 2016 Retrospective Dataset” Robert Rogers – “The Challenge of Intensity Forecasting in Moderate Shear” Emily Paltz (Hollings […]
June’s science meeting consisted of 7 presentations: Brad Klotz – “Guidance on Observational Undersampling over the Tropical Cyclone Lifecycle” Pete Black – “Coordinating the the Global Hawk (NASA, NOAA, EPOCH) with the HRD AIPEX module (HFP)” Jon Zawislak and Heather Holbach – “Data Display, Archival, and Legacy (DDAL)” Leon Nguyen – “Science Motivation for Analysis […]
Listen to and read the story at https://weather.com/storms/hurricane/news/atmospheric-gravity-waves-hurricane-detection-intensity.
Read it at https://www.eurekalert.org/pub_releases/2017-05/uomr-ssa051517.php.
May’s science meeting consisted of 3 presentations: Jonathan Zawislak: Validation of tropical cyclone precipitation in HWRF using satellite observations Hua Chen – Azimuthal distribution of deep convection, environmental factors, and tropical cyclone rapid intensification: A perspective from HWRF ensemble forecasts of Hurricane Edouard Stephanie Stevenson (University of Albany/SUNY): Understanding intensity changes signaled by tropical cyclone lightning […]
