Counting of VOS reports

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The tables here below are computed from ship's reports received at Meteo-France. It is based on the best knowledge we have about the country of recruitment for the ships. Normally ODAS platforms reporting their data in SHIP code are excluded. Fixed stations and oil riggs are normally also excluded. However, a few of them have their observations still counted here. Percentages are the results of comparisons with the previous year.


Comments

  • The total number of ship reports increased by 4.4% and 3.8% in 2003 and 2004, respectively. In parallel, the number of VOS decreased by 10.7% in 2003 and 4.1% in 2004.
  • The increasing number of observations is mainly due to automation. This kind of ibservation increased by 8.4% and 14.6% in 2003 and 2004, respectively. The number of obervations carried out by "manned VOS" decreased in 2004 moreover.


Manual and automatic VOS observations

Year Number
of ships
Number of ship
observations
World Ocean
Number of ship
observations
EUCOS area
2006 3,081 -3.3% 1,032,755 -1.9% 449,867 +5.3%
2005 3,186 -4.7% 1,053,934 -0.6% 427,337 -12.2%
2004 3,344 -4.1% 1,060,707 +3.8% 486,809 +0.8%
2003 3,488 -10.7% 1,022,345 +4.4% 482,744 +5.2%
2002 3,904   979,564   458,834  

Manual VOS observations

Year Number of ship
observations
World Ocean
Number of ship
observations
EUCOS area
2006 651,904 -6.8% 220,534 -6.0%
2005 699,471 -1.2% 234,544 -12.1%
2004 708,256 -0.9% 266,846 -4.4%
2003 714,869 +2.7% 279,258 +2.0%
2002 695,970   273,897  


Automatic VOS observations

Year Number of ship
observations
World Ocean
Number of ship
observations
EUCOS area
2006 380,354 +7.3% 237,836 +23.4%
2005 354,463 +0.6% 192,793 -12.4%
2004 352,451 +14.6% 219,963 +8.1%
2003 307,476 +8.4% 203,486 +10.0%
2002 283,594   184,937  

Variation for EUCOS and non-EUCOS VOS

2006 Number
of ships
Number of ship
observations
World Ocean
Number of ship
observations
EUCOS area
EUCOS ships 1,262 +2.8% 541,802 +3.4% 335,922 +10.7%
Non EUCOS ships 1,818 -7.1% 458,796 -9.2% 114,783 -3.0%
Callsign SHIP 1   31,660 +51.9% 7,615 +34.9%
Total 3,381 +6.1% 1,032,258 -2.1% 458,320 +7.3%


2005 Number
of ships
Number of ship
observations
World Ocean
Number of ship
observations
EUCOS area
EUCOS ships 1,228 +7.7% 524,196 +6.8% 303,318 -0.6%
Non EUCOS ships 1,957 -11.2% 508,897 -8.1% 118,376 -33.0%
Callsign SHIP 1   20,841 +29.9% 5,643 +10.7%
Total 3,186 -4.7% 1,053,934 -0.6% 427,337 -12.2%


2004 Number
of ships
Number of ship
observations
World Ocean
Number of ship
observations
EUCOS area
EUCOS ships 1,140 -3.0% 490,979 +1.7% 305,068 -0.7%
Non EUCOS ships 2,204 -4.7% 553,679 +5.4% 176,644 +2.6%
Callsign SHIP 1   16,049 +13.0% 5,097 +54.3%
Total 3,344 -4.1% 1,060,707 +3.8% 486,809 +0.8%


2003 Number
of ships
Number of ship
observations
World Ocean
Number of ship
observations
EUCOS area
EUCOS ships 1,175 +5.1% 482,761 +4.8% 307,311 +1.5%
Non EUCOS ships 2,313 -15.4% 525,378 +13.5% 172,130 +20.7%
Callsign SHIP 1   14,206 -53.4% 3,303 -75.3%
Total 3,488 -10.7% 1,022,345 +4.4% 482,744 +5.2%