RAMMB CIRA 4th Quarter Report
July August September 2008

 

Tropical Cyclone External Interactions

J. Knaff made a formal request to the Joint Typhoon Warning Center to provide a statistical evaluation of the wind radii and MSLP provided by the Multi-Platform  Tropical Cyclone – Surface Wind Project (MTC-SWP, a current PSDI project) for all storms advised upon during the 1 September – 31 December period. (J. Knaff)

CIRA and RAMMB co-hosted a tropical cyclone research interaction between CIRA, RAMMB, CSU and NCAR tropical cyclone researchers.   Topics discussed and participants are listed below.  Another workshop is tentatively planned for December 2008 at NCAR.  (J. Knaff)

Topic

Participant

Progress Toward An Extended Flight-Level Dataset

Jonathan Vigh(CSU)

Observations of Small Eyes in Atlantic Hurricanes from Aircraft Reconnaissance

Kate Musgrave (CSU)

Active Hurricane Cores

Wayne Schubert (CSU)

A Case Study on Mesoscale Vortex Merger and Scale Interaction Leading to Tropical Cyclone Genesis

Asuka Suzuki (NCAR/Georgia Tech University)

Wave Accumulation and Tropical Cyclone Genesis

James Done (NCAR)

High Resolution Radar and In-situ Observations of the Hurricane Boundary Layer During Landfall

Curtis Alexander (NCAR, University of Oklahoma)

Parameterizing SST Cooling Beneath a Hurricane Inner Core: A Simple Study Using the GFDL and HWRF Coupled Models

Andrea Schumacher (CIRA)

 A Preliminary Look at the NCEP HWRF Version 2008 Rerun of Hurricane Wilma

 Kate Maclay (CIRA/CSU)

Evaluation and Improvement of an Analytic Model for the Maximum Intensity of Tropical Cyclones.

George Bryan (NCAR)

Extremes as a bellwether of climate shift

Greg Holland (NCAR)

A Multi-platform Tropical Cyclone Surface Wind Analysis and Related Products

John Knaff (RAMMB)

Applications of NHC's Wind Probability Model

 Mark DeMaria (RAMMB)

High resolution (1km from AVHRR and MODIS) infrared imagery from Hurricane Katrina (2005), which  was collected as part of GOES-R Risk Reduction activities, was shared with M. Nguyen of Monash University to aid in her studies of the short-term variability of Katrina’s intensity as it relates to asymmetries.  Her modeling studies show that convective organization goes through distinct periods of axisymmeterization and intensification followed by periods of asymmetries and weakening or constant intensities.  She will examine this imagery for similar temporal evolution in IR asymmetries.  (J. Knaff)

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