1 / 20

Ozone service

Ozone service. NRT Total Ozone Column Total Ozone Forecast Total Ozone Record Ozone hole page Future activities. NRT Total Ozone Column. Product : - Total ozone column in near-real time (within 3 hours) based on GOME, SCIAMACHY and OMI

nova
Download Presentation

Ozone service

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ozone service • NRT Total Ozone Column • Total Ozone Forecast • Total Ozone Record • Ozone hole page • Future activities

  2. NRT Total Ozone Column Product : - Total ozone column in near-real time (within 3 hours) based on GOME, SCIAMACHY and OMI - NRT overpass files of about 100 ground stations Coverage : Global (limited coverage for GOME) Delivery:via FTP and web-access Archive : Archive of images and data sets,1996-present

  3. SCIAMACHY Tosomi ozone retrieval: Feb 2005 Low ozone over Northern Atlantic

  4. Total Ozone Forecast Description : Nine-day forecast, consisting of images and data setsof the ozone column. Based on assimilated ozone from SCIAMACHY and OMI. Frequency :Every 6 hours Coverage :Global on a grid of 1 x 1.25 degree Format :HDF and ASCII Delivery :FTP and web-access

  5. Forecast error verification

  6. Forecast error modelling • Analysis • Advection • Model error

  7. Typical forecast preformance: OmF total ozone rms(OmF) typically 3% bias within 1% 1% level -1% level

  8. Ozone forecasts "Anomaly correlation" for total ozone meaningful forecasts up to 7 days (outside tropics) Eskes et al., ACP, 2, 271, 2002

  9. Forecast of 26 Sept. 2002 (ozone hole split event) Analysis 7 day forecast GOME observation 9 day forecast J.Atmos.Sci. 62, 2005 special issue

  10. Total ozone service – Service Delivery Product : Assimilated ozone column from TOMS-N7, SBUV(NOAA-9), TOMS-EP, GOME, SCIAMACHY and OMI. Including overpass files of about 100 ground stations Coverage : Global Archive : Archive of images and data sets,1978-present Validation: • Data from 233 ground stations available • Only 91 stations selected with a useful dataset • Dobson, Brewer(3,4) and Filter-instruments • The OmF and OmA of the assimilated data analysed with a newly developed code (AssimPlot)

  11. Status of archived data TOMS Nimbus 7: 1978-1993 level 4 TOMS EarthProbe: 1996-2002 level 4 TOMS Meteor 3 : not yet available in the NASA DAAC TOMS ADEOS : data will not be made available SBUV NOAA9: 1992-1998 level 4 GOME : 1995-2003 level 2 and 4 GOME-NRT (EGOIs) : 1998-today level 2 SCIAMACHY : 2002-today level 2 and 4 OMI : 2004-today level 2 and 4 GOME-2 : 2007 level 4

  12. Low ozone, 19 January 2006

  13. NRT Total Ozone Column - Outlook

  14. Ozone hole service

  15. Ozone hole monitoring

  16. Conclusions • 30 years of ozone data available • Unique dataset with many interested users • Validation and level2 corrections are ongoing. • Regular reprocessing needed (reprocessing OMI, FRESCO+, degradation corrections, etc.)

  17. Outlook • Consistent dataset of 30 year of ozone • Tropospheric ozone from GOME and OMI

  18. GOME nadir profile assimilation Segers et al., Q.J.R. Meteorol. Soc., 131, 477-502, 2005

More Related