Transcript Slide 1

Mouth of the Columbia River Buoy System
Julie Thomas
Program Manager, CDIP
Executive Director, SCCOOS
Ilwaco, WA
June 18, 2009
COASTAL DATA INFORMATION PROGRAM
• Based at SIO
• 39 Wave Stations
• 14 People
• $2.5M+ / year budget
• Funded by:
CDBW
USACE
(SCCOOS
BEACON
ONR
CDIP Mission
SD Foundation…)
• Develop
US nearshore wave
climatology for more rational
design decisions
OUTLINE
1. Overview of the Coastal Data Information Program (CDIP)
2. Overview of the Datawell Wave Buoys, moorings and
deployment vessels.
3. Examples of existing customized Port products:
- Los Angeles/Long Beach – San Pedro Channel
- San Francisco
4. Mouth of the Columbia River – location
5. Funding
6. Examples of CDIP Products
7. Reliability Statistics
CDIP Wave Buoys Near Ports and Harbors
How important is consistency for
The inter and intra-state maritime
community?
Each port has its own unique
Set of challenges…no one
Template fits all!
Port/Harbor buoys
Other CDIP wave buoys
Integrated Ocean Observing System
(IOOS)
• Supports Science, Engineering, and
Marine Safety
• Sponsored by NOAA and USACE
• Plan Approved by IOOS Program
Office, March 2009
•Strategic placement of wave buoys for integration with global
and local wave models.
•High wave data quality standards
DATAWELL Directional
Wave Buoy
-Constructed in the Netherlands, robust,
reliable. Considered as the base system
for wave buoy comparisons in the
International Community (JCOMM)
-Centimeter accuracy in the wave height,
5 degrees resolution for wave direction.
-Data are transmitted via iridium satellite.
(full xyz and spectra are transmitted) . All
raw data are stored on board.
-- All data are disseminated on the CDIP
Website in near real-time. The data
update @ 30 minutes.
-The parameter (Hs, Tp, Dp, SST ) and
spectral data are transmitted to NDBC @
hour. Via AWIPS, data are transmitted to
the NWS Office.
- Alert system if buoy breaks loose.
MOORING SYSTEM
- 30
Compliant mooring
System designed to
maximize the
frequency response
of the buoy
Instrumentation.
m bungee that allows
for surface following buoy.
Bungee stretches to 4 x its
length
- Polypropolene line
- 1400 lbs of large anchor
chain
Gray’s Harbor Installation
1981 – present
Max Hs = 12m (2/06)
Umpqua (1/06)
Max Hs = 10.3m (1/07)
Cape Mendocino (3/99)
Max Hs = 9.98m (12/08)
The Coastal Wave Network Template
• Regional waves are monitored by a pair of
Outer & Inner Shelf Buoys.
outer
inner
Shelf
Break
Harbor
SHELF CROSS-SECTION
PLAN VIEW
The Coastal Wave Network Template
• Outer/Inner wave buoys are placed at wave model
boundaries for assimilation and validation.
Global
Model
Shelf
Model
Local
Model
Shelf Model
Shelf
Break
Local
Harbor
Model
CROSS SECTION
PLAN VIEW
Waves and Currents in the San Pedro Channel
SCCOOS providing currents
CDIP providing wave observations,
Nowcasts and forecasts.
http://sccoos.ucsd.edu/themes/harbors
Ports of Los
Angeles/Long Beach
Catalina
Website allows you to
click on your area of interest for
further details.
3 day wave forecast
Capability to send automated notification when thresholds are exceeded!
7 DAY FORECAST, WWW/CDIP
PEAK WAVE PERIOD 12-13 sec
Geo-referenced NOAA
charts to Google
SAN FRANCISCO BAR BUOY
Buoy-driven wave model predictions
CDIP Point Reyes Buoy
Long Period Swell
CDIP Bar Buoy
Short Period Seas
NOAA 46026
Swell + Sea
Prediction
Step 1. Validate Buoy-driven Regional Wave Transformation Hindcast at Bar Buoy.
Red=Model
Blue=Bar Buoy
February 2008 HINDCAST VALIDATION
Feb 23, 2008, 9pm. PST
3 m, 10 sec
Breaking Waves on the San Francisco Bar
Feb 24, 2008, 3p.m. PST
6 m, 14 sec
Breaking Waves on the San Francisco Bar
TOTAL:
116
IVO of SF Total
Bar
98
130
75
103
81
110
51
69
39
59
30
49
14
25
203
Marine Incidents
near
SF Bar
319
Number of Incidents
Fiscal
Surf
Year (FY) Cases
FY03
32
FY04
28
FY05
29
FY06
18
FY07
20
FY08
19
FY09
11
Bar Forecast Begun by MTR
120
100
80
60
40
20
0
FY03
FY04
FY05
Fiscal Year
FY06
IVO of SF Bar
FY07
FY08
FY09
Incidents in the Vicinity of SF Bar
PROPOSED LOCATIONS OF WAVE BUOYS AT THE MCR
ADDITIONAL COMMENTS (BILL O’REILLLY)
MCR
The buoys can be used to both drive coastal wave models at the
offshore and nested nearshore boundaries (hindcasts and
nowcast) as well as validate basin- and regional-scale ww3 model
forecasts at these critical hi res coastal model "handoff" locations.
You can use them in a more regional way. eg. to make wave
predictions for Willapa Bay as well, especially if you cheat the
inner shelf buoy slightly north of the Columbia River mouth.
USGS/USACE
Nominal Ebb tides
Max Ebb Tides
Summary
1. The MCR is a complex region. In order to obtain a good wave
model/bar forecast, you need high resolution directional wave
data.
2. The Inner/Outer Buoy concept has worked well.
Budget
Buoy, mooring, shipping, painting
$85,000
Salary (Admin, Tech, Programmer, BOR, JOT)
$10,000
Travel (5 days SD/Portland)
Sub Total
Overhead
TOTAL
$1300
________________
$96,300
27,700
__________________
$120,000
What does the $120K cover?
1.Order, shipment, paint, calibration,
2.Integration into CDIP system
3.Iridium configuration and costs,
4.Travel to Portland for installation,
5. Alert notification,
6.Data analysis, quality control, archive and
dissemination
7.Bill O’Reilly – wave model collaboration
Does not include
1.Vessel costs
2.Anchor chain
3.Local field team
Annual Maintenance
$20,000
-6,600
-----------$13,400 (CDIP)
Umpqua Buoy
% Deployed:
Percentage
of the year during
Spectral
data coverage:
2008which the buoy was deployed
and on site.
% Coverage:
Percentage
thewhich
deployed
period
for
% Deployed: Percentage
of the yearof
during
the buoy was
deployed
andwhich
on-site; good spectral data
% Coverage: Percentage of the deployed period for which good spectral data was obtained;
were
obtained.
Total
spectra: The number of spectra generated for the year.
Total spectra: The number of spectra files generated for the year.
Stn
Name
36
GRAYS HARBOR, WA
94
139
% Deployed
% Coverage
Total Spectra
100
99.81
17534
CAPE MENDOCINO, CA
99.92
96.74
16982
UMPQUA OFFSHORE, OR
99.91
100
17552
Reliability Statistics
2008
SAMPLE PRODUCTS
http://cdip.ucsd.edu
Hs(ft) Tp Dp SSt
California Swell Nowcast and Forecast Models
Gray’s Harbor Station Info Page
Min, Max, Mean
Customized Wave Model Nowcast and Forecast for the Navy
Directional
Spectrum plot
shows
Bi-modal wave
direction