HRD Monthly Science Meeting of June 2018

June’s science meeting consisted of three presentations: Sim Aberson – Extreme horizontal and vertical motions measured by dropsondes in tropical cyclones:  2017 update Erin Jones – Quantifying Spiral Gravity Waves Radiating from Tropical Cyclones Robert Rogers – Tropical Cyclone Vortex Development in Moderate Shear All the presentations are available on the anonymous ftp site at: ftp://ftp.aoml.noaa.gov/hrd/pub/blog/meetings/2018/Science/HRD_SciMeet_20180614.zip

Paper on the impact of dropwindsondes from the Global Hawk on forecasts released online in Monthly Weather Review

Summary:  A drone, what we call an unmanned aircraft system, can collect data in tropical cyclones (TCs) to improve forecasts.  Scientists have used the Global Hawk drone that can fly at an altitude of up to 60,000 feet for over 24 hours at a time since 2010. The Global Hawk releases dropwindsondes that measure wind, …

HRD Seminar – Dr. Andrew Hazelton, NOAA/GFDL, Princeton, NJ – 29 May 2018

Dr. Hazelton presented a seminar titled “High-Resolution fvGFS Forecasts of Atlantic Tropical Cyclones: Structural Analysis and Evaluation of the 2017 Atlantic Hurricane Season”. ABSTRACT: As numerical models reach finer horizontal and vertical resolution, evaluation of storm structure is critical to model assessment and improvement.  Structural metrics based on horizontal wind are examined in high-resolution TC forecasts …

AOML and HRD researchers at 33rd AMS Conference on Hurricanes and Tropical Meteorology, Ponte Vedra, FL – 15-20 April 2018

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 …

HRD Director, Frank Marks presents at NOAA’s 2018 Hurricane Season Awareness Webinar Series, 8 May 2018

The webinar was the first in a series of five webinars presented by NOAA’s Southeast and Caribbean Regional Collaboration Team (SECART) in advance of the 2018 Atlantic Hurricane Season by NOAA specialists from the National Hurricane Center (NHC), the Atlantic Oceanographic and Meteorological Laboratory (AOML), the National Weather Service Forecast Offices (WFOs) as they provide …

HRD Monthly Science Meeting of May 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 …

Paper on how small-scale changes in winds in hurricanes impact hurricane forecasts published in Weather and Forecasting

Summary: Forecasters and researchers use the Hurricane Weather Research and Forecasting (HWRF) model to forecast where a hurricane will go, how strong and large it will be, and where the strongest winds will be. Wind in hurricanes are different over very short distances like 100 m, or the length of a football field, what is …

HRD Monthly Science Meeting of April 2018

April’s science meeting consisted of five presentations: Andrew Kren - Impact of Global Hawk dropsonde data assimilated in the NCEP GFS model during SHOUT: Hurricanes Matthew and Nicole in 2016 Hui Christophersen - Impact of Global Hawk Dropsondes on Tropical Cyclone Analyses and Forecasts Sim Aberson -  1-km HEDAS analysis of Hurricane Patricia just after peak …

HRD Seminar – Dr. Jeff Kepert, Bureau of Meteorology, Melbourne, Australia – 23 April 2018

Dr. Kepert presented a seminar titled “Bias correction of tropical cyclone size and structure in the ECMWF global ensemble prediction system". ABSTRACT: Global EPS systems provide very valuable warning of severe weather risk, including tropical cyclones. One limitation arises because the spatial resolution of the EPS is necessarily too coarse to capture the fine details …