HRD Monthly Science Meeting of May 2020

May's science meeting consisted of six presentations: Michael Fischer: An examination of local shear, vortex tilt, and tropical cyclone intensity change using airborne radar observations Erica Bower: Towards an Automated Approach to Analyzing Extreme Precipitation and Tropical Cyclones Hua Leighton: Ice Particle Size Distributions from Composites of Microphysics Observations Collected in Tropical Cyclones Laura Ko: … Continue reading HRD Monthly Science Meeting of May 2020

HRD Monthly Science Meeting of April 2020

April's science meeting consisted of four presentations: Xiaomin Chen -  "Evaluation of PBL schemes using a simple method of large-eddy simulations" Nicholas Foukal (WHOI) -  "Air-sea fluxes in the North Atlantic during extreme wind conditions" Andrew Hazelton - "Exploration of the Early Track and Intensity Uncertainty in Hurricane Dorian Using a HAFS Ensemble"  Frank Marks - "Pioneering … Continue reading HRD Monthly Science Meeting of April 2020

Paper on how Hurricane Michael (2018) intensified rapidly in the Gulf of Mexico released online in Monthly Weather Review

Weather forecasters use computer models to make predictions. These forecasts of the future depend on knowing what is happening now, what we call initial conditions. However, we can't measure the weather at every location on earth all the time, so we don't know exactly what these initial conditions are. Therefore, we run forecast models many … Continue reading Paper on how Hurricane Michael (2018) intensified rapidly in the Gulf of Mexico released online in Monthly Weather Review

HRD Monthly Science Meeting of March 2020

March’s science meeting consisted of four presentations: Lakemariam Worku: Diurnal Cycle of Rainfall and Convection over the Maritime Continent (the MC) Using TMPA and ISCCP Kathryn Sellwood: Calculating Shear from Dropsondes Michael Fischer: Tropical Cyclone Radar Archive of Dual-Doppler Analyses with Recentering (TC-RADAR) John Kaplan: Preliminary analysis of the impact of wind structure and eye predictors … Continue reading HRD Monthly Science Meeting of March 2020

HRD Debrief for missions into EP95/Pre-Ivo in collaboration with OTREC – 3 March 2020

HRD researchers and our collaborators from the NSF-sponsored Organization of Tropical Eastern Pacific Convection (OTREC) experiment discussed the results from the 4 P-3 and 3 NCAR G-V HIAPER missions into EP95 which eventually became Hurricane Ivo in the Eastern Pacific. IFEX flew 4 P-3 missions from Liberia, Costa Rica into the disturbance that became Ivo, … Continue reading HRD Debrief for missions into EP95/Pre-Ivo in collaboration with OTREC – 3 March 2020

Paper on how tropical cyclones can intensify in high shear released online in Monthly Weather Review

When the wind within about 150 miles of the center of a tropical cyclone (what we call the near environment) is very different at the bottom and the top of the storm (what we call wind shear), the storm usually weakens, especially if the storm is already weak. However, sometimes this doesn't happen, and the … Continue reading Paper on how tropical cyclones can intensify in high shear released online in Monthly Weather Review

Paper evaluating different schemes to predict convection in hurricanes released online in Weather and Forecasting

Forecasters and researchers use the Hurricane Weather Research and Forecasting (HWRF) model to forecast where a hurricane will go, how strong it will be, how large it will be, and where the strongest winds are. Hurricanes are made up of thunderstorms (what we call convection), but individual thunderstorms are too small for the models we … Continue reading Paper evaluating different schemes to predict convection in hurricanes released online in Weather and Forecasting

HRD Monthly Science Meeting of February 2020

February’s science meeting consisted of seven presentations: Kyle Ahern: Simulated Boundary Layer Structure in Hurricane Earl (2010) After Peak Intensity Udai Shimada: Self-Introduction and Research Plans at HRD Levi Cowan: Comparison of Atlantic Tropical Cyclone Interactions with Upper Tropospheric Jets During Intensification and Weakening Sim Aberson: Multiple vortices as seen in Tropical Cyclone Rina on … Continue reading HRD Monthly Science Meeting of February 2020

HRD Debrief for missions into Hurricane Dorian – 30 January 2020

HRD researchers discussed the results from the 15 P-3 and 10 G-IV missions into Hurricane Dorian, AL05 (26 August - 5 September 2019). The format of the debrief was different than in the past. A brief overview is provided of the storm and missions, followed by a series of 8 short presentations discussing planned and … Continue reading HRD Debrief for missions into Hurricane Dorian – 30 January 2020

Paper on differences in rainfall between tropical disturbances that form into tropical cyclones and those that don’t published in Monthly Weather Review

Summary: Many weather satellites are outfitted with instruments that can see through clouds to sense where and how hard it is raining (the rain rate), and how much of the rain is occurring in deep convective clouds (cumulus and cumulonimbus clouds that form when warm air rises). They can also see tropical disturbances, which are usually … Continue reading Paper on differences in rainfall between tropical disturbances that form into tropical cyclones and those that don’t published in Monthly Weather Review