Tag Archives: Jun A. Zhang

HRD observation team monthly meeting – March 2016

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 … Continue reading

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Posted in Data Assimilation, Dynamics and Physics, HFIP-Hurricane Forecast Improvement Project, Modeling and Prediction, Observations, Presentations | Tagged , , , , , , , , , | Leave a comment

HRD observation team monthly meeting – February 2016

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 … Continue reading

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Posted in Data Assimilation, Dynamics and Physics, HFIP-Hurricane Forecast Improvement Project, Modeling and Prediction, Observations, Presentations | Tagged , , , , , , , , , , , , , , , , , , , , | Leave a comment

HRD Monthly Science Meeting of February 2016

February’s science meeting consisted of 2 presentations: Jun Zhang – Impact of boundary-layer vertical diffusion on HWRF forecasts of tropical cyclone rapid intensification Hui Christophersen – On the impact of NASA Global Hawk unmanned aircraft dropwindsondes on tropical cyclone track, intensity … Continue reading

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Paper on the eyewall replacement cycle in model forecasts published in Geophysical Research Letters

The paper can be accessed at http://onlinelibrary.wiley.com/doi/10.1002/2015GL066436/full.

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Paper on turbulence near the surface in tropical cyclones published in The Journal of the Atmospheric Sciences

The paper can be accessed at http://journals.ametsoc.org/doi/abs/10.1175/JAS-D-14-0373.1.

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HRD employees honored at awards ceremony

A number of HRD employees were honored at an awards ceremony at AOML earlier in December.  Among the honorees: Jun Zhang earned a CIMAS Gold Medal for efforts to improve the surface layer and vertical-diffusion parameterization within the HWRF model to … Continue reading

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10th Anniversary of Hurricane Wilma

In the early morning hours of October 24, 2005, Hurricane Wilma came ashore on Florida’s Gulf coast.  The storm had set records and then ravaged the Yucatan Peninsula prior to this final landfall, but it still had plenty of power … Continue reading

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HRD Monthly Science Meeting of October 2015

October’s science meeting consisted of 4 presentations: Ghassan Alaka – A preliminary analysis of Joaquin Jason Dunion – Interesting observations from the P-3 lower-fuselage radar Jun Zhang – Effects of vertical and horizontal turbulent mixing on simulated hurricane intensity and … Continue reading

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Paper on the impact of very small-scale winds on hurricane forecasts published in Monthly Weather Review

The National Hurricane Center uses 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. This paper looks at … Continue reading

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10th Anniversary of Hurricane Rita

Early on the morning of September 24, 2005, Major Hurricane Rita came ashore near the Texas/Louisiana border.  In the midst of the very active 2005 hurricane season, Rita caused considerable panic as it approached the coast, with scenes of destruction … Continue reading

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