BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Diurnal ozone variations in the stratosphere revealed in observati
 ons from the Superconducting Submillimeter-Wave Limb-Emission Sounder (SMI
 LES) onboard the International Space Station (ISS) -  Takatoshi Sakazaki (
 Kyoto University)
DTSTART:20130416T130000Z
DTEND:20130416T140000Z
UID:TALK44507@talks.cam.ac.uk
CONTACT:Dr Amanda Maycock
DESCRIPTION:Considerable uncertainties remain in the global pattern of diu
 rnal variation in stratospheric ozone\, particularly lower to middle strat
 ospheric ozone\, which is the principal contributor to total column ozone.
  \n\nThe Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES)
  attached to the Japanese Experiment Module (JEM) onboard the Internationa
 l Space Station (ISS)\, was developed to gather high-quality global measur
 ements of stratospheric ozone at various local times\, with the aid of sup
 erconducting mixers cooled to 4 K by a compact mechanical cooler. \n\nUs
 ing the SMILES dataset\, as well as data from nudged chemistry-climate mod
 els (MIROC3.2-CTM and SD-WACCM)\, we show that the SMILES observational da
 ta have revealed the global pattern of diurnal ozone variations throughout
  the stratosphere. We also found that these variations can be explained by
  both photochemistry and dynamics. The peak-to-peak difference in the stra
 tospheric ozone mixing ratio (total column ozone) reached 8% (1%) over the
  course of a day. This variation needs to be considered when merging ozone
  data from different satellite measurements and even from measurements mad
 e using one specific instrument at different local times.
LOCATION:Todd Hamied Room\, Department of Chemistry
END:VEVENT
END:VCALENDAR