Real-Time Dissemination of Airborne Doppler Radar Data from the NOAA P-3 Aircraft: A Progress Report PI: John Gamache (HRD) Collaborators: Peter Dodge, Joe Griffin, Nancy Griffin, Paul Leighton (HRD), and Alison Krautkramer (TPC/JHT) Points of Contact: James Franklin and Colin McAdie at NHC EMC collaborator: Qingfu Liu Thanks to NOAA/AOC http://www.aoml.noaa.gov/hrd/project2003/ doppler.html
Transcript
Slide 1
Real-Time Dissemination of Airborne Doppler Radar Data from the
NOAA P-3 Aircraft: A Progress Report PI: John Gamache (HRD)
Collaborators: Peter Dodge, Joe Griffin, Nancy Griffin, Paul
Leighton (HRD), and Alison Krautkramer (TPC/JHT) Points of Contact:
James Franklin and Colin McAdie at NHC EMC collaborator: Qingfu Liu
Thanks to NOAA/AOC
http://www.aoml.noaa.gov/hrd/project2003/doppler.html
Slide 2
Project Goals Develop a airborne-Doppler hurricane wind- field
analysis in real time and make portions of it available to
hurricane specialists at the Tropical Prediction Center Send
reliable observations to the Environmental Modeling Center at NCEP
for data-assimilation testing in numerical hurricane
simulations
Slide 3
Main Goals of this Presentation List and describe briefly the
tasks required for this project Present the kinds of wind fields we
have developed in real time on the P3 Compare analysis briefly with
GPS sondes for one case Future work
Slide 4
Vertically scanning X-band Doppler radar aboard the NOAA P-3
Aircraft NOAA Antenna Jorgensen et al., JAM, 1983
Slide 5
HRD Software Prior to JHT Three-dimensional variational
analysis of winds from airborne Doppler radar data Higher
resolution radius height cross-section of wind along the inbound
and outbound legs
Slide 6
Project Requirements Automated Quality Control of Raw Doppler
Data (completed) Software to generate batch job files (completed)
Software to generate output files that can be transmitted off the
aircraft by SATCOM to EMC (completed) Software to generate tagged
files to send analyses to TPC via SATCOM (in progress) Network
communication path to TPC and EMC (in progress)
Slide 7
Doppler Radial VelocityHurricane Humberto 232855 UTC 23 Sep
2001 Raw (except for standard Bargen-Brown unfolding) HRD QC
Slide 8
Real-Time 2004 airborne-Doppler Accomplishments in Hurricane
Ivan Three-dimensional wind fields and vertical profiles produced
in real time in Hurricane Ivan (2004)--1 per flight during N43RF
flights on Sep 12, 13, and 15 Files of trimmed quality-controlled
radial velocities produced that could be sent to EMC by SATCOM
Slide 9
Wind speed in m/s at 1-km altitude Hurricane Ivan 12 September
1115-1145 UTC (digital camera picture of N43RF airborne
workstation)
Slide 10
Radial wind (m/s) along outbound (SE) flight leg
Slide 11
Wind speed in m/s along outbound (SE) flight leg
Slide 12
After flight cartesian airborne-Doppler analysis of winds from
same flight leg at 1-km altitude in Hurricane Ivan 1115-1145 UTC on
12 September 2004 Available real time in 2005
Slide 13
Comparison of Doppler Vertical Cross Section with GPS Eyewall
Sonde Wind speed m/s GPS sonde Doppler analysis
Slide 14
Automatic QC (minutes) Manual QC (weeks) Horizontal plots of
total wind speed at 2 km altitude Hurricane Isabel 1710 UTC 12 Sep
2004
Slide 15
50100150 Radius from center (km) 50100150 Radius from center
(km) Automatic QC (minutes) Manual QC (weeks) m/sRadius-height
cross-sections of radial wind Hurricane Isabel 1710 UTC Sep 12
2004
Slide 16
NWS GEMPAK display of automatic Doppler analysis at 1600 ft
altitude. Wind barbs at left and total earth-relative wind speed in
knots on right Display developed at TPC by Alison Krautkramer
Hurricane Ivan on 12 Sep 2004 at 1453 UTC Grand Cayman Possible
further application: Modification of flight plan to find max
wind.
Slide 17
Summary We can produce real-time airborne Doppler wind analyses
reliably They are available in either a three-dimensional form, or
as two-dimensional radial profiles of winds. Radial profiles have
higher radial and vertical resolution than the three-dimensional
fields since solution of mass continuity is not required
Slide 18
Future Work Compute comparison statistics with dropsondes
Modify package to work on the G4-upgrade Doppler radar and linux
system Apply automatic QC and analysis to large archive of airborne
Doppler data (this spring-- 2004) Modify quality control software
to allow manual QC after automatic QC (for research)
Slide 19
Thank you
Slide 20
GEMPAK wind barbs at 3200 ft altitude Developed at TPC by
Alison Krautkramer Hurricane Ivan on 12 Sep 2004 at 1453 UTC