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

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 Seminar – Dr. Karina Apodaca, CSU/CIRA and AOML/HRD – 24 October 2018

Dr. Apodaca presented a seminar titled “Advances in new data assimilation methodologies and observations for the benefit of NOAA operations". ABSTRACT: In an effort to advance the operational weather forecasting enterprise a vital objective is having the ability to accurately predict severe weather. Integrating new methodologies to enhance data assimilation systems and incorporating new and … Continue reading HRD Seminar – Dr. Karina Apodaca, CSU/CIRA and AOML/HRD – 24 October 2018

HRD Debrief for missions into Hurricane Florence, EP96 Genesis, and G-IV SAL Mission – 22 October 2018

HRD researchers discussed the results from the 3 P-3 and 9 G-IV missions into Hurricane Florence, AL06 (8-13 September 2018). The agenda for the discussion was: Agenda: Missions Overview (Jon Zawislak) Deployment Overview 20180908H1 (Jon Zawislak) 20180909H1 (Jon Zawislak) 20180910H1 (Jon Zawislak) NESDIS / Ocean Winds (Joe Sapp NESDIS) HRD researchers also discussed the results … Continue reading HRD Debrief for missions into Hurricane Florence, EP96 Genesis, and G-IV SAL Mission – 22 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 Debrief for missions into Tropical Storm Gordon and Hurricane Isaac – 17 October 2018

HRD researchers discussed the results from the 3 P-3 missions into Tropical Storm Gordon, AL07 (3-4 September 2018) . The agenda for the discussion was: Agenda: Missions Overview (Jon Zawislak) Deployment Overview (Jon Zawislak) 180903H1 (Robert Rogers) 180904H1 (Ghassan Alaka) 180904H2 (Hui Christophersen) HRD researchers also discussed the results from the 5 P-3 missions into … Continue reading HRD Debrief for missions into Tropical Storm Gordon and Hurricane Isaac – 17 October 2018

HRD Seminar – Dr. Jonathan Poterjoy, University of Maryland – 16 October 2018

Dr. Poterjoy presented a seminar titled “Regional Weather Prediction Using an 'Iterative' Local Particle Filter". ABSTRACT: Particle filters (PFs) are sequential Monte Carlo methods that can solve data assimilation problems characterized by non-Gaussian error distributions for prior model variables or measurements. From the perspective of a geoscientist, PFs contain several theoretical properties that make them … Continue reading HRD Seminar – Dr. Jonathan Poterjoy, University of Maryland – 16 October 2018

HRD Seminar – Evan Forde – 26 September 2018

Mr. Forde presented a seminar titled “Identification of Atlantic Basin Tropical Cyclones in Proximity to Significant Dry Air Events in Total Precipitable Water Imagery (1987-2015)”. ABSTRACT: A study analyzing total precipitable water (TPW) data from 1987-2015,  has identified 126 Atlantic basin TCs that were in proximity to significant dry air events (SDAEs) including Saharan Air … Continue reading HRD Seminar – Evan Forde – 26 September 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