HRD Seminar – Dr. Yair Cohen, California Institute of Technology – 13 November 2018

Dr. Cohen presented a seminar titled “Gradient Non-Balance: A new approach for the outflow at the top of Tropical Cyclones: Theory, models and observations". ABSTRACT: The gradient non-balance is a flow-regime in which the gradient wind balance has no solutions or a given pressure map. This occurs only around a high pressure center, when the … Continue reading HRD Seminar – Dr. Yair Cohen, California Institute of Technology – 13 November 2018

Paper on how getting turbulence correct in forecast models can improve intensity forecasts in sheared storms released online in Monthly Weather Review

Summary:  Though tropical cyclones (TCs) are usually hundreds of miles across, the strongest wind occurs in gusts that can be smaller than 100 yards across, or the size of a football field. We call features that cover such a small area the “turbulent scale.” Other features that are important in forecasting TCs can be as … Continue reading Paper on how getting turbulence correct in forecast models can improve intensity forecasts in sheared storms released online in Monthly Weather Review

HRD Debrief for missions into Hurricane Michael – 26 October 2018

HRD researchers discussed the results from the 6 P-3 and 3 G-IV missions into Hurricane Michael, AL14 (8-10 October 2018). The agenda for the discussion was: Agenda: Missions Overview (Jon Zawislak) Deployment Overview (Jon Zawislak) 20181008H1 (Kelly Ryan) 20181009H1 (Rob Rogers) 20181009N2 (Jason Dunion/ John Kaplan) 20181009H2/Coyote (Kelly Ryan) 20181010H1 (Rob Rogers/ Jon Zawislak) EMC … Continue reading HRD Debrief for missions into Hurricane Michael – 26 October 2018

HRD observation team monthly meeting – 18 October 2018

The purpose of the observation team meetings is to bring together the people who use observations in their research on a regular basis to discuss issues they’re having, provide updates on observations they’re analyzing or collecting, and any other information that may be of interest to the broader group.  These meetings are also an excellent … Continue reading HRD observation team monthly meeting – 18 October 2018

HRD Monthly Science Meeting of September 2018

September’s science meeting consisted of three presentations: Miguel Cortez (NERTO intern) – The impact of Global Hawk Dropsonde Data Assimilated in Both Global and Regional Forecast Models During Hurricane Harvey Jon Poterjoy (Maryland) - Research Applications for the Basin-Scale HWRF Data Assimilation and Forecasting System Andy Hazelton - FV3 Hurricane Nest (HFV3) Development and Analysis … Continue reading HRD Monthly Science Meeting of September 2018

HRD Seminar – Saiprasanth Balachandran, Purdue University – 5 September 2018

Mr. Balachandran presented a seminar titled “Spatial, temporal, and spectral characteristics of convective asymmetries driving rapid intensity changes in tropical cyclones”. ABSTRACT: Understanding the role of convective asymmetries in influencing a change in tropical cyclone (TC) intensity is a challenging task. The inherent difficulty is because asymmetries can arise from different sources, occur at different … Continue reading HRD Seminar – Saiprasanth Balachandran, Purdue University – 5 September 2018

HRD Seminar – Kyle Ahern, Florida State University – 4 September 2018

Mr. Ahern presented a seminar titled “Observed and Simulated Boundary Layer Structures in the Hurricane Inner-core During Intensity Change”. ABSTRACT: GPS dropwindsonde data from Atlantic basin aircraft reconnaissance missions (Hock and Franklin 1999) between 1998 and 2015 are gathered to construct composites of the hurricane inner-core boundary layer during modes of intensity change. Sounding information … Continue reading HRD Seminar – Kyle Ahern, Florida State University – 4 September 2018

HRD Debrief for missions into Hurricane Lane – 30 August 2018

HRD researchers discussed the results from the 4 G-IV and 4 P-3 missions into Central Pacific Hurricane Lane (19-23 August 2018) representing the first NOAA P-3 mission to fly a Central Pacific storm. The agenda for the discussion was: Agenda: Storm Overview (Jon Zawislak) Missions Overview (Jon Zawislak) Deployment Overview (Jon Zawislak) CPHC Feedback (Tom Birchard, … Continue reading HRD Debrief for missions into Hurricane Lane – 30 August 2018

HRD Monthly Science Meeting of August 2018

August’s science meeting consisted of five presentations: Andrew Kren - HAMSR retrieval assimilation in the GSI system Josh Wadler (UM/RSMAS)- A Characterization of Turbulent Kinetic Energy and its Generation in Idealized Tropical Cyclone Simulations Gus Alaka - The Basin-Scale HWRF: 2018 HFIP Real-Time Demos Miguel Cortez (NERTO intern) – Summer 2018 NERTO update Stan Goldenberg … Continue reading HRD Monthly Science Meeting of August 2018