Impact of NASA Satellite Data and Models on U.S. Coast ... Day 1... · Art Allen, U.S. Coast Guard...
Transcript of Impact of NASA Satellite Data and Models on U.S. Coast ... Day 1... · Art Allen, U.S. Coast Guard...
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Impact of NASA Satellite Data and Models on U.S. Coast Guard’s Decision Support Tool for Search and
Rescue in the Northeastern Pacific Ocean
3-Year: Sept. 2008-October. 2011 (April 2012)
PI: Yi Chao, Jet Propulsion Laboratory
Co-Is:
Carl Schoch, Alaska Ocean Observing System (AOOS.ORG)
Carter Ohlmann, Univ. of California at Santa Barbara
William Emery, Univ. of Colorado at Boulder
Eoin Howlett, Applied Science Association (ASA.COM)
Application Partner:
Art Allen, U.S. Coast Guard (USCG) 1
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Search And Rescue (SAR) Problem
• Create a SAR case when alerted
• Gather information about case
• Get environmental data & uncertainties
• Determine search area (knowledge, model)
• Estimate resource availability and capability
• Plan and perform the search
• Evaluate the completed search
• Repeat above until survivors
are found and rescued 2
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US Coast Guard (USCG) Search and Rescue (SAR) Operations Statistics
FY
Cases
Lives
Saved
2005 29,780 5,648
2006 28,323 5,290
2007 27,090 5,175
3 Improved decision making can be quantified by lives saved
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Decision Support Tool: Search and Rescue (SAR) Operations (SAROPS) by US Coast Guard and
Environmental Data Server (EDS) by industry-ASA
4 Data must be certified in the right place and right format
NASA Data and
Model are not
used, particularly
off the US west
coast
SAROPS/EDS
Seen by the
USCG controller
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NASA Applied Science Decision Support Project Objective
• Our primary objective is to work with our U.S. Coast Guard (USCG) partner to provide improved real-time, high-resolution ocean current and wind observational data as well as ocean circulation forecasts with error estimates for inclusion in the USCG Decision Support Tool (DST) known as Search and Rescue Operations (SAROPS).
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Proposed Architecture for the Search and Rescue Decision Support Tool
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R&D Institutions: NASA JPL, UCSB,
CU, Non-profit AOOS
Decision-Making
Partner: USCG
DS Tool Industry
Partner: ASA
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3-Year Work Plan • Year 1: Establish baseline performance (benchmarking)
– Data collection during a field experiment; Model testing and verification/validation; Benchmarking Decision Support Tool (DST)
• Year 2: Component refinement and integration – Understand data and model; Refine and improve the forecasting system;
Explore and ultimately use new NASA satellite data
• Year 3: Quantify the improvement and Transition from research to operations – Data collection during another field experiment, and compare with the year 1
field experiment benchmark to quantify the improvements enabled by NASA data and model; deliver our developed data and model forecast in real-time to the decision maker (i.e., US Coast Guard) through our industry partner ASA, the designated contractor for US Coast Guard, in the right place and format; Transition from research to operations to demonstrate actual decision making with improved results (e.g., reduction of response time, reduced search areas, planning for adequate resources) and socioeconomic benefits.
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Year 1: Establish baseline performance – Research & Development
• Data collection during a field experiment
• Model testing and verification/validation
– Benchmarking Decision Support Tool (DST)
Prince William Sound
Alaska 8
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Field Experiment: July 18-Aug 3, 2009
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Co-sponsors: Alaska Ocean
Observing System; Prince
William Sound Science Center
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National Weather Service Regional WRF Forecast by UAA/UAF
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1-km 3-km 9-km
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Regional Ocean Modeling System (ROMS)
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ROMS Data Assimilation to enable forecasting
Time
Stat
e o
f O
cean
(e
.g.,
T, S
, Cu
rre
nt)
T T+ 6 T+ 72
Forecast
True Ocean
Observations
Ensemble Forecast
Error
Nowcast
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Min (J) = 0.5 (x-xf)T B-1 (x-xf) + 0.5 (h x-y)T R-1 (h x-y)
xa = xf + xf
3-Dimensional Variational (3DVAR) Data Assimilation
y: observation
x: model
TS
f
TS
aaTS
f
uv
aTS
f
TS
uv
xx
xxx
xxx
x
x
x
S
T
v
u
x
Li, Z., Y. Chao, J.C. McWilliams, and K. Ide: A Three-Dimensional Variational Data Assimilation Scheme for the
Regional Ocean Modeling System. Journal of Atmospheric and Oceanic Technology, 25, 2074-2090, 2009.
Li, Z., Y. Chao, J. C. McWilliams, and K. Ide: A three-dimensional variational data assimilation scheme for the
Regional Ocean Modeling System: Implementation and basic experiments. Journal of Geophysical
Research (Oceans), 113, C05002, doi:10.1029/2006JC004042, 2008.
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Model Verification
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Ensemble Forecast
&
Error Estimation
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How is the forecast error growing with time
is VERY important
Observation Ensemble Forecast
Forecasting drifter trajectory
Dis
tan
ce (
km
)
20 40 60
Forecast
Time
(hour)
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One-Stop
Information
Portal
JPL ROMS
Analysis &
Forecast
End-to-End
Integration
for Data and
Models
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Year 2: Component refinement and integration
– Understand uncertainty (two different in situ sensors)
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starting positions
ending positions
USCG SLDMBs
Microstar drifters
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– Understand uncertainty
• In situ single-point vs remote sensing averaged measurements
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Year 2: Component refinement and integration
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– Understand uncertainty (model spatial variability)
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Year 2: Component refinement and integration
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Year 3: Transition from research to operations
http://ourocean.jpl.nasa.gov/PWS/
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Year 3: Relocating from Alaska to California
http://ourocean.jpl.nasa.gov/SCB
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Year 3: Transition from research to operations
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Year 3: Transition from research to operations
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Year 3: Quantify the improvement (by USCG)
Observed (green) vs 6-hour Nowcast (red) and 72-hour Forecast (white/yellow)
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Year 3: Quantify the improvement (by USCG) Observed (green) vs 6-hour Nowcast (red) and 72-hour Forecast (white/yellow)
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Publications – Schoch and Yi Chao (2010) Ocean Observing System
Demonstrated in Alaska, EOS, Transactions, American Geophysical Union (AGU), Vol. 91, No. 20, 181-182.
– Schoch and Chao et al., An Ocean Observing and Forecasting Experiment in Prince William Sound, Alaska, Bulletin of American Meteorological Society (BAMS), to appear in August 2011.
– Continental Shelf Research (CSR) special issue, with guest editors: Schoch and Chao, manuscripts (~20) in review, final publication early 2012, opportunity for another cover page; NASA contributed about 30%.
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$3K
surprise to
John!
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Future Challenge and Follow-Up Project Idea: To supply NASA global data and on-demand model
forecast in all USCG Search and Rescue areas