Jun Zhang participates in 2nd Boundary Layer Workshop

The 2nd Boundary Layer Workshop was held virtually on 1-2 June. The goal of the workshop is to continue the work from the previous one to improve our understanding and modeling of surface and atmospheric boundary layer processes. The event was organized by Tilden Meyers of NOAA's Air Resource's Laboratory and David Turner of NOAA's … Continue reading Jun Zhang participates in 2nd Boundary Layer Workshop

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.

HRD Monthly Science Meeting of April 2021

April's science meeting consisted of four presentations: Xiaomin Chen: "Boundary Layer Recovery and Precipitation Symmetrization Preceding Rapid Intensification of Tropical Cyclones under Shear" Andy Hazelton: "HAFS Ensemble of Hurricane Dorian (2019): Early Intensity and Long-Term Track" Jon Zawislak: "Accomplishments of NOAA's Airborne Hurricane Field Program and a Broader Future Approach to Forecast Improvement" Kathryn Sellwood: … Continue reading HRD Monthly Science Meeting of April 2021

HRD scientists participate in annual AVAPS Users Group Meeting

The annual meeting, held online this year, brings together developers and users of the Airborne Vertical Atmospheric Profiling System, the basis of the dropwindsondes released in and around tropical cyclones each summer since 1997. The AVAPS dropsondes are released from NOAA and Air Force aircraft to measure high-resolution profiles of temperature, pressure, humidity, and wind … Continue reading HRD scientists participate in annual AVAPS Users Group Meeting

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 was released online 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 was released online in Monthly Weather Review

Paper on a new way to estimate the size and intensity of tropical cyclones from Synthetic Aperture Radar released online in the Journal of Selected Topics in Applied Earth Observations and Remote Sensing

Summary: To warn people who are in harm’s way from a tropical cyclone (TC), not only is it important to know where it is going and how strong it will be, but also how large it is.  We usually measure that by looking at how far away from the center of the TC wind of … Continue reading Paper on a new way to estimate the size and intensity of tropical cyclones from Synthetic Aperture Radar released online in the Journal of Selected Topics in Applied Earth Observations and Remote Sensing