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 January 1 |
 January 15 |
 February 1 |
 February 15 |
 March 1 |
 March 15 |
 April 1 |
 April 15 |
 May 1 |
 May 15 |
 June 1 |
 June 15 |
 July 1 |
 July 15 |
 August 1 |
 August 15 |
 September 1 |
 September 15 |
 October 1 |
 October 15 |
 November 1 |
 November 15 |
 December 1 |
 December 15 |
NASA's Total Ozone Mapping Spectrometer (TOMS) instruments
provide global measurements of total column ozone on a daily
basis. Nimbus-7 TOMS and Meteor-3 TOMS together operated from
November 1978 -December 1994. A gap of one and a half years followed.
ADEOS TOMS provided data from August 17, 1996 until June 29,
1997 when the spacecraft failed. Earth Probe TOMS was launched
on July 2, 1996 and continues to provide near real-time data.
North Pole TOMS Data by Date | Ozone Concentrations | Ozone
Hole | ChemConnections