james pinto project scientist ii ncar research applications laboratory [email protected] ncar/ral...
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James PintoProject Scientist II
NCAR Research Applications [email protected]
NCAR/RAL Perspective onAviation-based Requirements for RUA
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Rapid Update Analysis Workshop, 3 June 2015
Alaska C&VFAA camera locations
- Provide 1st guess analysis to AAWU for developing C&V charts - Generate analysis that combines available met data (METAR, satellite, etc) with C&V info from FAA cameras - Effort currently lead by Rita Roberts (RAL) and Bob Hallowell (MIT-LL) - Requirements: Cloud base analysis, RH trends
1000 camera locations with multiple view angles.
VFR MVFR
VFRMVFRIFR
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Rapid Update Analysis Workshop, 3 June 2015
Dust Storm Analysis and NowcastsWRF-chem Aerosol Optical Depth
- builds on WRF-Chem modeling framework - implemented for Saudi Arabia’s Presidency of Meteorology & Environment (PME)
> guidance on aerosol optical depth, all dust, & dust near surface - Requirements: Surface wind gusts, stability profiles, surface moisture
MODIS Optical Depth
Slide courtesy Yubao Lui (RAL)
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Rapid Update Analysis Workshop, 3 June 2015
MCS InitiationMCS Detection JJA 2013 OBS MCS-I Frequency
Pinto et al. 2015
• Peak frequency 8% / (500 km)2 in SE• Mean Frequency = 0.3 % / (500 km)2
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Rapid Update Analysis Workshop, 3 June 2015
MCS Initiation - PredictionMCS Initiation Detection MCS-I Likelihood
Requirements: Improved model initialization – boundary locations, stability profiles, PBL moisture
mem1
mem2
memNReliability
MCS-I within 125 km +/- 1 hr
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Rapid Update Analysis Workshop, 3 June 2015
Nowcasting MCS Initiation with Data Mining
- Random Forest to asses which variables most useful for predicting MCS Initiation - Ahijevych et al. 2015 - Requirements: Stability, Moisture (surface and integrated), shear, boundaries
HRRR Predictors Ordered By Mean Importance
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Rapid Update Analysis Workshop, 3 June 2015
Turbulence Analysis and Nowcasts NEXRAD Turbulence Detection Algorithm (NTDA)
◦ Prototype running in real-time over entire CONUS (133 NEXRADS)◦ 5 min updates
NEXRAD
EDR
Slide courtesy Bob Sharman (RAL)
- Requirements: 15 min trends in stability, u,v,w, hydrometeor profiles
~400 aircraft w/ in situ EDR
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Rapid Update Analysis Workshop, 3 June 2015
Precip Type & Icing Potential Analysis
- EOL’s Particle identification software uses dual polarization, temperature profile analysis (slide courtesy Scott Ellis) - Requirements: T,q(z) accurately depicting melt layer
Retrieval Algorithms using Polarimetric Radar Data
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Rapid Update Analysis Workshop, 3 June 2015
Requirements Summary
C&V - Cloud base Analysis, RH(z) trends
Convection - Stability, Moisture (surface and integrated), shear, boundaries
Turbulence - 15 min trends in stability, u,v,w profiles
Precip Type - T,q(z) especial in vicinity accurately depicting melt layer
Icing - T,q(z), cloud geometry, liquid water content, specific humidity
Dust Storm/ Haze - Requirements: Surface wind gusts, stability profiles, surface moisture, optical depth
Variable-dependent Analysis Uncertainty Critical
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Rapid Update Analysis Workshop, 3 June 2015
Aviation-relevant Projects in RAL• Ceiling and Visibility - Combine satellite, metars, FAA camera into C&V analysis for AK - Haze and dust storms analysis/prediction
• Inflight Icing - CIP/FIP - Probability of icing, severity, supercooled liquid drops - High ice water content (HIWC) - Precip type retrievals from polarimetric radar
• Turbulence and Wind Shear - NCAR Turbulence Detection Algorithm (NTDA) - In situ Eddy Dissipation Ratio (EDR) - Juneau Airport Wind System (JAWS)
• Convection - Probabilistic MCS-I nowcasting - Lightning analysis and nowcasting
RUA Nowcasting Workshop, 3-4 Jun 2015