PACJET Projects |
HMT 2004
PACJET 2003
PACJET 2002
PACJET 2001
CALJET 1998
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Publications |
Snow Level Detection (pdf)
Orographic Precipitation (pdf)
ETL S-band Radar (pdf)
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Data |
GWINDEX
West Coast RUC
ETL Profiler Network
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Background |
About Pacjet
CALJET Summary
Societal Impacts and User Input
Linkages to National Priorities
USWRP
Data Assimilation Implementation Plan
NSSL Briefing
Press Release
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Programs Documents |
PACJET 2001 and a
Long-term Effort to Improve 0-24h West Coast Forecasts
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PACJET Community |
NOAA Research:
ETL,
NSSL,
FSL
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National Weather Service Western Region:
Eureka,
Hanford,
Medford,
Monterey,
Oxnard,
Portland,
Reno,
Sacramento,
San Diego,
Seattle,
CNRRC,
NWRFC
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Office of Marine and Aviation Operations:
AOC
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Naval Postgradute School
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DRI CIASTA
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CIRES
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SUNY Stony Brook
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National Centers for Environmental Prediction:
EMC,
HPC,
MPC
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National Environmental Satellite, Data
and Information Service
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CIMSS
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CIRA
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Operational Forecasting Components |
COMET Precipitation
Presentation
West Coast RUC
Aircraft Obs via AWIPS
GWINDEX Poster
Applications Development
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Research Components |
Modeling Research Components
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Related Experiments |
Winter Storm Reconnaissance (Central Pac.)
IMPROVE (Microphysics)
THORPEX (Synoptic Targeting)
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Observing Systems |
NOAA P-3
Wind Profiler Network
Satellite Products
NOAA S-band Radar
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Contact |
Marty Ralph
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Planning Workshops |
2001 - Monterey, CA
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Observing Systems
NOAA P-3
Tail Radar Data
The tail radar on the P-3 is a Doppler radar and provides detailed measurements of the
vertical and kinematic (wind) structure of storms in a swath roughly 80 km wide (40 km on
either side of the aircraft). These data have proved especially useful in research, and will
provide real-time measurements of the intensity of precipitation and depth of the storm, as
well as the height of the freezing level that will be included in the reconnaissance message.
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Data from the P3 Tail radar during CALJET.
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Fuselage Radar Data
The belly radar is not a Doppler radar, but it provides radar reflectivity measurements out to a
range of roughly 200 km. This capability allows on-board assessment of the position,
orientation, and strength of rain bands. Rain band motion can be determined by tracking
them over roughly an hour.
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Data from the P3 Fuselage Radar during CALJET.
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Wind Profiler Network
Profiler deployment for CRPAQS.
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Satellite Products
Cooperative Institute for Research in the Atmosphere (CIRA) AMSU Data
Tutorial: Polar Satellite
Products for the Operational Forecaster: Microwave
Cloud Liquid Water
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Rain Rate
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AVN Geopotential Height
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AMSU Geopotential Height
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S-band data
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S-band radar deployed at CALJET
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ETL S-band Radar
A new S-band vertical profiler with a coupler option for extending the
dynamic range of the radar's receiver has been developed by the NOAA
Environmental Technology Laboratory and successfully field tested during
CALJET. The 30 dB of added dynamic range provided by the coupler allows
the profiler to record radar reflectivity measurements in
moderate-to-heavy precipitation that otherwise would not have been
possible with this system because of receiver saturation. The radar
hardware, signal processor, and operating software are based on existing
S-band and UHF profiler technology developed at the NOAA Aeronomy
Laboratory. Results from a side-by-side comparison with the NOAA K-band
radar were used to determine the calibration and sensitivity of the
S-band profiler. In a typical cloud profiling mode of operation, the
sensitivity is -14 dBZ at 10 km or -25 dBZ at 3 km. During CALJET, the
profiler was deployed at Cazadero, California, near the crest of the
coastal mountains in a region climatologically prone to flooding. The
profiler was part of an integrated observing system designed for
measuring physical processes associated with orographic precipitation
enhancement. The CALJET S-band dataset is also being applied to the
problem of quantitative precipitation estimation using the WSR-88D
(NEXRAD) network.
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