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Ozone-Watch Bulletins FPCN58 (descriptive)
Most recent chart
The OZONE WATCH bulletin (FPCN58) is produced on Thursday and transmitted on Friday. It presents the average departure between the ozone values observed over the 14 day period ending on Wednesday and the pre-1980 climatology. The most recent map is the graphical equivalent of the FPCN58 bulletin
Monthly: 2003 2002
2001
2000 1999
1998 1997
1996 1995
1994 1993
Annual: 2003 2002
2001
2000 1999
1998 1997
1996 1995
1994 1993
The graphics present the monthly and annual departure between the observed ozone values at each station and the pre-1980 climatology. Missing months are depicted with the letter "M". Monthly data may be missing for various reasons (tranmission and instrument problems, low sun angles, cloudy conditions, insufficient number of observations, etc).
Note : The above information is based on preliminary data. For official data, please contact the World Ozone Data Centre ( tel.: 416-739-4635 ).