International Buoy Programme for the Indian Ocean ~ an Action Group of the Data Buoy Cooperation Panel ~
Report of the IBPIOReport of the IBPIO 2007/08 Intersessional Period
Presented to DBCP-XXIV13-16 October 2008, Cape Town, Republic of South Africa
Graeme BallChairman IBPIO
with contributions from Jean Rolland, Michel Trémant and Pierre Blouch
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 2
Outline
• Members, Meetings & Committee
• Program Review & Plans
• Network Status
• Performance Monitoring
• Discussion & Recommendations
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 3
Members, Meetings & Committee
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 4
Members of the IBPIO
AGENCY JOINED
Australian Bureau of Meteorology (ABOM) 1997
Global Drifter Center, NOAA/AOML, USA (GDC) 1997
Météo France (MF) 1997
National Institute of Oceanography, India (NIO) 1997
South African Weather Service (SAWS) 1997
National Institute of Ocean Technology, India (NIOT) 2001
Navoceano, USA (NAVO) 2001
Eduardo Mondlane University, Mozambique (EMU) 2007
Tropical Moored Buoy Implementation Panel (TIP) 2007
Kenya Meteorological Department (KMD) 2008
Indian National Centre for Ocean Information Services (INCOIS) 2008
Malaysian Meteorological Department (MMD) EOI
Mauritius Meteorological Service (MMS) EOI
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 5
IBPIO-XI (Cape Town, 2008)
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 6
Programme Review & Plans
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 7
Rescale table to 77%(12.85 cm x 18.73 cm)
3.3 (H) & 3.73 (V)
Programme Review
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 8
Drifting Buoy Deployments by Type
0
20
40
60
80
100
120
140
160
180
200
1996
-97
1997
-9819
98-99
1999
-00
2000
-0120
01-02
2002
-03
2003
-0420
04-05
2005
-06
2006
-0720
07-08
Nb
of b
uoys
Others
FGGE-W
FGGE
SVP-BW
SVP-B
SVP
Includes Iridium PP buoys2 – ABOM3 – Météo France
11 – INCOIS
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 9
Drifting Buoy Contributions to IBPIO
0
20
40
60
80
100
120
140
160
180
200
1996
-9719
97-98
1998
-9919
99-00
2000
-0120
01-02
2002
-0320
03-04
2004
-0520
05-06
2006
-0720
07-08
Nb
of b
uoys
Others
Upgrades
GDC
AU 8
FR 26
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 10
Drifting Buoy Contributions by Others
0
10
20
30
40
50
60
70
80
1996
-9719
97-98
1998
-9919
99-00
2000
-0120
01-02
2002
-0320
03-04
2004
-0520
05-06
2006
-0720
07-08
Nb
of b
uoys
OthersSAWSNavoNIOM-FBoM
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 11
2007/2008 Drifting Buoy Deployment Locations
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 12
Rescale table to 77%(12.85 cm x 18.73 cm)
3.3 (H) & 3.73 (V)
Programme Plans
Iridium
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 13
Network Status
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 14
Rescale map to 74%(12.66 cm x 22.12 cm)
1.59 (H) & 3.73 (V)
Map particulars
Scale: 74%
Size: 12.66 x 22.12
Posn: 1.59, 3.73
Global Buoy Network
IBPIO area of interest
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 15
Operational Drifting Buoys
Agency SST AP Wind
ABOM - 14 1
GDC 50 79* -
SAWS 1 0 -
MF - - -
NIO - 10 -
INCOIS 0 2 -
Total 51 105 1
* Includes upgrades
(as at 31 August 2008)
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 16
Network Growth (Drifting Buoys)
0
20
40
60
80
100
120
140
160
180
200
sep-96 sep-97 sep-98 sep-99 sep-00 sep-01 sep-02 sep-03 sep-04 sep-05 sep-06 sep-07
Act
ive
buoy
s
SST onlyAir Press.Wind
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 17
Number of Operational MSLP Buoys
IBPIO drifting buoys - Data availabilityMean number of operational buoys (MSLP)
0
20
40
60
80
100
120
140
janv-0
2mai-
02se
pt-02
janv-0
3mai-
03se
pt-03
janv-0
4mai-
04se
pt-04
janv-0
5mai-
05se
pt-05
janv-0
6mai-
06se
pt-06
janv-0
7mai-
07se
pt-07
janv-0
8mai-
08
Num
ber o
f of b
uoys
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 18
SST onlyAir PressureWind
Drifting Buoy Trajectories
Aug 2008Aug 2005
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 19
Performance Monitoring
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 20
Data Availability (Drifting Buoys)
IBPIO drifting buoys - Data availabilityAverage number of hourly MSLP values per day
0
500
1000
1500
2000
2500
3000
janv-0
2mai-
02se
pt-02
janv-0
3mai-
03se
pt-03
janv-0
4mai-
04se
pt-04
janv-0
5mai-
05se
pt-05
janv-0
6mai-
06se
pt-06
janv-0
7mai-
07se
pt-07
janv-0
8mai-
08
Num
ber o
f dai
ly o
bs.
Total <100 min < 50 min
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 21
Data Timeliness (Drifting Buoys)
IBPIO drifting buoys - Data timelinessPercentage of data arrived within 50 minutes
0
10
20
30
40
50
60
70
80
90
100
janv-0
2mai-
02se
pt-02
janv-0
3mai-
03se
pt-03
janv-0
4mai-
04se
pt-04
janv-0
5mai-
05se
pt-05
janv-0
6mai-
06se
pt-06
janv-0
7mai-
07se
pt-07
janv-0
8mai-
08
Perc
ent
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 22
Data Timeliness Comparison (Drifting Buoys)
Data timeliness - Percentage of drifting buoys dataarrived within 100 minutes
0
10
20
30
40
50
60
70
80
90
janv-0
2mai-
02se
pt-02
janv-0
3mai-
03se
pt-03
janv-0
4mai-
04se
pt-04
janv-0
5mai-
05se
pt-05
janv-0
6mai-
06se
pt-06
janv-0
7mai-
07se
pt-07
janv-0
8mai-
08
EGOS-EUCOS
IBPIO
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 23
Gross Errors (Drifting Buoys)
IBPIO drifting buoys - Data qualityGross Errors of differences with the French model outputs
0,0
0,5
1,0
1,5
2,0
2,5
3,0
janv-0
2mai-
02se
pt-02
janv-0
3mai-
03se
pt-03
janv-0
4mai-
04se
pt-04
janv-0
5mai-
05se
pt-05
janv-0
6mai-
06se
pt-06
janv-0
7mai-
07se
pt-07
janv-0
8mai-
08
Perc
ent
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 24
MSLP RMS Errors (Drifting Buoys)
IBPIO drifting buoys - Data qualityRMS of differences with the French model outputs
0,0
0,2
0,4
0,6
0,8
1,0
1,2
1,4
1,6
1,8
2,0
2,2
janv-0
2mai-
02se
pt-02
janv-0
3mai-
03se
pt-03
janv-0
4mai-
04se
pt-04
janv-0
5mai-
05se
pt-05
janv-0
6mai-
06se
pt-06
janv-0
7mai-
07se
pt-07
janv-0
8mai-
08hP
a
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 25
Data Availability (NIOT)
NIOT moored buoys - Data availabilityAverage number of hourly MSLP values per day
0
20
40
60
80
100
120
janv-0
2mai-
02se
pt-02
janv-0
3mai-
03se
pt-03
janv-0
4mai-
04se
pt-04
janv-0
5mai-
05se
pt-05
janv-0
6mai-
06se
pt-06
janv-0
7mai-
07se
pt-07
janv-0
8mai-
08
Num
ber o
f dai
ly o
bs.
Total <100 min < 50 min
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 26
Value of Buoy Observations
Mean daily pressure data availability index (Aug 2008)
(top #): 100 = 8 obs (SHIP & BUOY) per day per 500 km x 500 km.
(bottom #): Percentage of BUOY reports
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 27
Tropical Cyclone Kamba
Buoy WMO 33520 and Cyclone KambaIndian Ocean - March 2008
975
980
985
990
995
1000
1005
1010
1015
1020
01/03/2008 03/03/2008 05/03/2008 07/03/2008 09/03/2008 11/03/2008 13/03/2008 15/03/2008 17/03/2008
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 28
Discussion & Recommendations
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 29
Concerns About Data Timeliness
• IBPIO-XI expressed concerns about the delays in the Indian Ocean, particularly in the months July-Sept 2008: » There were delays affecting moored and drifting buoys transmitting
by INMARSAT via the Indian GTS Node, which have since improved.
» Other drifting buoys in the region transmitting via Argos had been affected by a problem with the Argos Antenna (Hyderabad).
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 30
Recommendation to DBCP-XXIV
1. That CLS reduce the delays in the region by both improving the performance of the existing antenna and enhancing the network. (Action CLS)
2. The panel to be informed about how well the region will be served by the new Argos-3 system in coming years. (Action CLS, DBCP TC)
13-16 October, 2008 2007/08 Intersessional Report of the IBPIO 31