15th anniversary of publication of seminal work on wind profiles in the tropical cyclone eyewall from dropwindsondes

Starting in 1996, NOAA phased out use of the obsolete Omega DropWindsondes (ODW) in favor of the Global Positioning Satellite (GPS) Dropwindsondes.  In addition to being more accurate due to the superior navigation system, this next-generation sonde was also more moisture tolerant.  ODWs would fail in they were launched in areas of heavy rain, but …

Paper on the best way to input very large numbers of observations into weather models published in Monthly Weather Review

Summary: Almost all weather forecasts for times longer than a few hours in the future are made using complicated computer apps working together on the largest computers. This is known as numerical weather prediction, or NWP for short. One of the most important NWP apps takes all kinds of data and mixes them together to …

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 …

Best Student Poster at AMS 33rd Hurricane Conference

The Best Student Poster for Mesoscale Meteorology Award at the AMS 33rd Hurricane and Tropical Meteorology Conference was awarded to University of Utah student George (Trey) Alvey III and co-authored by HRD's Rob Rogers and Jon Zawislak along with U. Utah Professor Ed Zipser.  The poster was titled "Hurricane Edouard's (2014) Intensification: The Relationship between …

Jason Dunion wins 2018 Banner I. Miller Award

HRD's Jason Dunion, along with colleagues Chris Thorncroft, and Chris Velden, were presented with the prestigious Banner I. Miller Award at the AMS's 33rd Hurricane and Tropical Meteorology Conference for their paper "The tropical cyclone diurnal cycle of mature hurricanes".  The work was cited for "identifying a fundamental process in tropical cyclones and elegantly defining …