HRD Monthly Science Meeting of July 2021

July's science meeting consisted of five presentations: Sophie Grimsley (Lapenta Intern): "Project Check-in: Hurricane Intensity Change and Boundary Layer Processes" Nick Mesa (Lapenta Intern): "Investigating Intensity Changes Related to Thermodynamic Processes Using Near-coincident Aircraft and Satellite Observations" Laura Ko: "A Consensus Machine Learning Model for Hurricane RI Probabilistic Predictions" Sim Aberson: "Including High-Resolution AMVs in … Continue reading HRD Monthly Science Meeting of July 2021

Paper on two rapidly intensifying typhoons released online in the Bulletin of the American Meteorological Society

For more information, contact aoml.communications@noaa.gov. The article is available at https://doi.org/10.1175/BAMS-D-20-0223.1. The authors thank the US NCEP, JTWC, NRL, the Remote Sensing Systems, NOAA NESDIS, the European Union’s Copernicus and the AVISO team, and theArgo team for providing essential data sets. I.-I. L. acknowledges support from the Ministry of Science and Technology, Taiwan. R. R. … Continue reading Paper on two rapidly intensifying typhoons released online in the Bulletin of the American Meteorological Society

HRD Monthly Science Meeting of June 2021

June's science meeting consisted of six presentations: Nick Mesa (HRD): “Investigating intensity changes related to thermodynamic processes using near-coincident aircraft and satellite observations” Sophie Grimsley (HRD): “Hurricane Intensity Change and Boundary Layer Processes” Chris Landsea (NHC): "Was 2020 a Record-Breaking Hurricane Season?  Yes, but… (Why did the new average number of Named Storms go up … Continue reading HRD Monthly Science Meeting of June 2021

HRD scientists participate in the 34th American Meteorological Society Conference on Hurricanes and Tropical Meteorology

34th Conference on Hurricanes and Tropical Meteorology Virtual Meeting The 34th AMS Conference on Hurricanes and Tropical Meteorology was held virtually 10-14 May after being postponed from 2020. This is the premiere meeting for operational and research scientists who work on understanding and forecasting tropical cyclones and other tropical weather around the world. HRD scientist … Continue reading HRD scientists participate in the 34th American Meteorological Society Conference on Hurricanes and Tropical Meteorology

Paper on how the ocean allowed for the intensification of Hurricane Michael to category-5 status before landfall published in the Journal of Geophysical Research – Oceans

Ocean observations showed very warm water at the surface and below, and computer simulations show that these ocean conditions supported intensification despite unfavorable atmospheric conditions. For more information on this study, contact aoml.communications@noaa.gov. Read the whole study at https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2020JC016969.

Paper that reviews what we know about intensity change published in Atmosphere

This paper is an overview of what we currently know about processes important in tropical cyclone intensity change and the research that has been done during the past 15 years using aircraft data. The paper describes the eye and eyewall and how they change in time, the region close to the ocean surface where the … Continue reading Paper that reviews what we know about intensity change published in Atmosphere

Paper looking at how model forecasts of what is happening near the ocean surface in tropical cyclones changes as the space between forecast points gets smaller published in Monthly Weather Review

The energy that fuels tropical cyclones comes from heat and moisture from the warm ocean below.  This energy is transferred from the ocean to the atmosphere and the momentum is transported from atmosphere to surface by what we call turbulent processes in the atmosphere near the ocean surface (what we call the planetary boundary layer … Continue reading Paper looking at how model forecasts of what is happening near the ocean surface in tropical cyclones changes as the space between forecast points gets smaller published in Monthly Weather Review

Paper describing how tropical cyclones in shear rapidly develop published in the Journal of the Atmospheric Sciences

Tropical Cyclones (TCs) occur over warm water in the ocean, and this warmth and moisture is what feeds the engine that keeps the TC going.  They are made up of thunderstorms, what we call deep convection, and within the convection, there are both convective updrafts and convective downdrafts.  The temperature in the atmosphere goes down … Continue reading Paper describing how tropical cyclones in shear rapidly develop published in the Journal of the Atmospheric Sciences