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The Match technique was used to determine chemically induced ozone loss inside the stratospheric vortex during the Arctic winter 2002/2003. From end of Novem-ber 2002, which is the earliest start of a Match campaign ever, until end of March 2003 approximately 800 ozoneson-des were launched from 34 stations in the Arctic and mid latitudes. Ozone loss rates(More)
Q10: Why has an " ozone hole " appeared over Antarctica when ozone-depleting substances are present throughout the stratosphere?. O zone is present only in small amounts in Earth's atmosphere. Nevertheless, it is vital to human well-being and ecosystem health. Most ozone resides in the upper part of the atmosphere. This region, called the stratosphere, is(More)
A total ozone depletion of 68±7 Dobson units between 380 and 525 K from 10 December 2002 to 10 March 2003 is derived from ozone sonde data by the vortex-average method, taking into account both diabatic descent of the air masses and transport of air into the vortex. When the vortex is divided into three equal-area regions, the results are 85±9 DU for the(More)
The OHP Temperature and Ozone Intercomparison Campaign (OTOIC) took place at the Observatoire de Haute Provence, France, from 1–18 July 1997. The NASA God-dard Space Flight Center (GSFC) mobile lidar system was deployed at the Observa-toire de Haute Provence (OHP) during a blind intercomparison as a part of the contin-5 uous validation process within the(More)
  • L. Liu, F. Flatøy, +8 authors S. A. Isaksen
  • 2006
As part of the EU project FORMAT (Formaldehyde as a Tracer of Oxidation in the Tro-posphere), a field campaign was carried out in the vicinity of Milan during the summer of 2002. Results from a 3-D regional chemical transport model (NILU RCTM) were used to interpret the observations focusing primarily on HCHO and ozone. The per-5 formance of the model was(More)
Ozone measurements from ozonesondes, AROTAL, DIAL, and POAM III instruments during the SOLVE-2/VINTERSOL period are composited in a time-varying, flow-following quasi-conservative (PV-θ) coordinate space; the resulting composites from each instrument are mapped onto the other instruments' locations and times. The mapped 5 data are then used to intercompare(More)
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The Match technique was used to determine chemically induced ozone loss inside the stratospheric vortex during the Arctic winter 2002/2003. From end of November 2002, which is the earliest start of a Match campaign ever, until end of March 2003 approximately 800 ozonesondes were launched from 30 stations in the Arctic and mid 5 latitudes. Ozone loss rates(More)
A total ozone depletion of 68 Dobson units from 10 December 2002 to 10 March 2003 is derived by the vortex-average method taking into account both diabatic descent of the air masses and transport of air into the vortex. When the vortex is divided into three equal-area regions, the results are 85 DU for the collar region (closest to the 5 edge), 52 DU for(More)