Paper on the bumpy ride encountered by Hurricane Hunters in Hurricane Felix released online in Monthly Weather Review

On September 2, 2007, a National Oceanic and Atmospheric Administration Hurricane Hunter airplane flew into Hurricane Felix when it was a category-5 hurricane north of Venezuela. The aircraft measured wind speed of 163 kt (188 mph) at the ocean surface and an upward wind speed of 60 kt (69 mph), the fastest upward wind ever […]

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New and Improved SFMR data set

The technique to process data from the Stepped Frequency Microwave Radiometer (SFMR), which observes surface wind speeds and rain rates within tropical cyclones, was upgraded prior to the 2015 hurricane season on all NOAA and Air Force Reserve Command hurricane reconnaissance aircraft. The processing method improves the observations across all wind speeds and rain rates. Brad […]

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HRD researchers contribute to new textbook on recent advances in tropical cyclone research

The book, co-edited by HRD scientist Sundararaman Gopalakrishnan, is based on a series of lectures by scientists from the US, India and Australia, at a workshop held in Bhubaneswar, India on 9-14 July 2012. It provides information on recent advances in tropical cyclone (hurricane and typhoon) observations, data assimilation (the process of getting these observations […]

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HRD observation team monthly meeting – 16 February 2017

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 […]

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HRD Monthly Science Meeting of February 2017

February’s science meeting consisted of 7 presentations: Bachir Annane: Impact of Simulated CYGNSS Ocean Surface Winds on Tropical Cyclone Analyses and Forecasts in a Regional OSSE Framework Mark Leidner (AER): Creating Vector Winds from Simulated CYGNSS Ocean Surface Wind Speed Retrievals Using Variational Analysis Brittany Dahl: Impact of Global Hawk Observing Strategies on Vortex-Scale Tropical Cyclone […]

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HRD observation team monthly meeting – 17 November 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 that may be of interest to the broader group.  These meetings are also an excellent […]

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HRD Monthly Science Meeting of November 2016

November’s science meeting consisted of 7 presentations: Shun-Nan Wu (RSMAS), “The signal of future TC intensification in the CloudSat measurements” Jon Zawislak (FIU/CIMAS/HRD), “The Relationship Between Precipitation and Environmental Forcing during Tropical Cyclone Formation” Leon Nguyen (HRD), “Thermodynamic and kinematic influences on precipitation symmetry in sheared tropical cyclones: Bertha and Cristobal (2014)” Brad Klotz (CIMAS/HRD): […]

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Paper on variations in the surface winds in tropical cyclones published in Geophysical Research Letters

 Summary: Special radars on satellites, known as scatterometers, use the relationship between the conditions on the ocean surface and surface wind speed and direction to provide a view of the surface winds in and around tropical cyclones (hurricanes in the Atlantic and east Pacific oceans). This manuscript is an initial study of the tropical […]

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HRD Debrief for missions into Tropical Storm Karl Hermine – 30 September 2016

HRD researchers discussed the results from the 7 P-3, 5 G-IV, and 2 Global Hawk missions into Tropical Storm Karl (20-24 September 2016). The agenda for the discussion was: Slides from the debrief are available at: ftp://ftp.aoml.noaa.gov/pub/hrd/blog/meetings/2016/HFP/Karl_debrief.pptx

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15th Anniversary of CAMEX-4

On August 16, 2001, NASA began the fourth in its Convection And Moisture EXperiment (CAMEX) field programs.  The CAMEX campaigns were designed to examine the moisture budgets and convective structure of tropical cyclones, and were carried out in conjunction with HRD’s annual hurricane field program. The 2001 campaign centered around NASA’s DC-8 and ER-2 research aircraft […]

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