65th IHC Booklet/Program (pdf - 4.9MB) - Office of the Federal ...

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On the Characteristic Height Scales of the Hurricane Boundary Layer: Dropsonde Composite Analysis for the Purpose of Model Diagnostics Jun Zhang 1 Robert Rogers 2 , David Nolan 3 , Frank Marks 2 (Jun.Zhang@noaa.gov) 1 UM/CIMAS & NOAA/HRD, 2 (NOAA/HRD), 3 UM/RSMAS In this talk, we present composite analysis results using hundreds of GPS dropsonde data from 13 hurricanes. We focus on the investigation of the characteristic height scales of the hurricane boundary layer. The height scales are defined in a variety of ways: the height of the maximum total wind speed, the inflow layer depth, and the mixed layer depth. The height of the maximum wind speed and the inflow layer depth are referred to as the dynamical boundary layer heights, while the mixed layer depth is referred to as the thermodynamical boundary layer height. The data analyses show that there is a clear separation of the thermodynamical and dynamical boundary layer heights. Consistent with previous studies on the boundary layer structure in individual storms, the dynamical boundary layer height is found to decrease with decreasing radius to the storm center. The thermodynamic boundary layer height, which is much shallower than the dynamical boundary layer height, is also found to decrease with decreasing radius to the storm center. The results also suggest that using the traditional critical Richardson number method to determine the boundary layer height may not accurately reproduce the height scale of the hurricane boundary layer. These different height scales reveal the complexity of the hurricane boundary layer structure that should be captured in hurricane model simulations. Methodology and preliminary results of using the dropsonde composites to evaluate the PBL scheme used in the Hurricane Weather Research and Forecast (HWRF) model are discussed. Session 7 – Page 8
S E S Session 9 ITOP/TCS-10: Coupled Air-Sea Observations and TC Predictions S I O N 9
Page 1:
65th Interdepartmental Hurricane Co
Page 5 and 6:
The 2010 Atlantic Hurricane Season:
Page 7 and 8:
2010 Atlantic and Eastern North Pac
Page 9 and 10:
A Review of the Joint Typhoon Warni
Page 11: NOAA Aircraft Operations Center (AO
Page 15 and 16: Microwave sounder observations duri
Page 17 and 18: The 2010 GOES-R Proving Ground at t
Page 19 and 20: Developments in 2010 in in-flight r
Page 21: Surface-Reflected GPS Wind Speed Se
Page 25 and 26: Real-Time Airborne Ocean Measuremen
Page 27 and 28: WISDOM Intensity Program - Weather
Page 29 and 30: A Two-Dimensional Velocity Dealiasi
Page 31: Establishing an Improved National C
Page 35 and 36: Advancements to the Operational HWR
Page 37 and 38: 2011 operational HWRF model upgrade
Page 39 and 40: An Overview of COAMPS-TC Developmen
Page 41: Evaluation and Improvement of Ocean
Page 45 and 46: Prediction of Consensus TC Track Fo
Page 47 and 48: Large ensemble tropical cyclone int
Page 49 and 50: Evaluation and Development of Ensem
Page 51: Ensemble-based prediction and diagn
Page 55 and 56: Technology Transfer in Tropical Cyc
Page 57 and 58: Hurricane Intensity and Structure R
Page 59 and 60: Evaluation and Improvements of Clou
Page 61: Tropical Cyclone Inner-core Diagnos
Page 66 and 67: Multi-scale Observations of Cloud C
Page 68 and 69: Pre-Genesis Monitoring of the 3-D A
Page 70 and 71: Ocean observations in developing an
Page 72 and 73: Multi-Model Coupled Air-Sea Forecas
Page 75 and 76: Hurricane and Severe Storm Sentinel
Page 77 and 78: 2011 Plans for NOAA’s Intensity F
Page 79 and 80: Airborne Surface Water and Ocean To
Page 81 and 82: In this study we go further and per
Page 83: Intraseasonal to Seasonal Predictio
Page 87 and 88: International Best Track Archive fo
Page 89 and 90: Improvements to Statistical Intensi
Page 91 and 92: Improving SHIPS Rapid Intensificati
Page 93: S E S Session 12 Joint Hurricane Te
Page 96 and 97: Enhancements to the SHIPS Rapid Int
Page 98 and 99: Advanced Applications of Monte Carl
Page 100 and 101: ATCF Requirements, Intensity Consen
Page 102 and 103: Tools for Coordinating Aircraft Dur
Page 105 and 106: Real-time radar processing in the 2
Page 107 and 108: Improved Hurricane-force Surface Wi
Page 109 and 110: Wide Swath Radar Altimeter (WSRA) W
Page 111 and 112: Direct Interpretation of COSMIC Ref
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Coupled Air-Sea Observations in Tro
Page 115 and 116:
Assimilating COSMIC GPS RO data for
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Developing an Atlantic Ocean initia
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Improving Ocean Model Performance i
Page 121 and 122:
HWRF Model Diagnostic Improvements
Page 123 and 124:
A highly configurable vortex initia
Page 125 and 126:
An Update on the Status of FNMOC Pr
Page 127 and 128:
Diagnosing initial condition sensit
Page 129 and 130:
Objective Diagnosis of the Eyewall
Page 131 and 132:
Quantitative Comparison of Precipit
Page 133 and 134:
Vertical Wind Shear Impacts on Hurr
Page 135 and 136:
Hurricanes: Science and Society - a
Page 137 and 138:
SATellite Intensity CONsensus (SATC
Page 139 and 140:
What might a global TC reanalysis p
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