1 / 10

Monitoring and assimilation of SCIAMACHY data at ECMWF Antje Dethof, ECMWF

Monitoring and assimilation of SCIAMACHY data at ECMWF Antje Dethof, ECMWF. Mar. Mar. Apr. Apr. May. May. Jun. Jun. Mar. Mar. Apr. Apr. May. May. Monitoring of SCIAMACHY ozone columns. Global means, 1 Mar – 30 June 2004. ESA NRT retrievals. KNMI TOSOMI retrievals.

quincy
Download Presentation

Monitoring and assimilation of SCIAMACHY data at ECMWF Antje Dethof, ECMWF

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. Monitoring and assimilation of SCIAMACHY data at ECMWF Antje Dethof, ECMWF

  2. Mar Mar Apr Apr May May Jun Jun Mar Mar Apr Apr May May Monitoring of SCIAMACHY ozone columns Global means, 1 Mar – 30 June 2004 ESA NRT retrievals KNMI TOSOMI retrievals

  3. Monitoring of SCIAMACHY ozone columns, Global means 1 - 31 Oct 2004 ESA NRT retrievals KNMI TOSOMI retrievals Problem with climatology?

  4. ESA NRT L2 product, April 2004 Data gap SCIA [DU] (obs-fg)/fg [%] KNMI NRT L2 TOSOMI product

  5. Assimilation of SCIAMACHY (TOSOMI) ozone 23 May 2004 No SCIA With SCIA TOMS

  6. Assimilation of SCIAMACHY (TOSOMI) ozone 11 Sept 2004 No SCIA With SCIA TOMS

  7. with SCIA No SCIA with SCIA No SCIA Assimilation of SCIAMACHY (TOSOMI) ozone Fit to ozone sonde profiles

  8. Assimilation of SCIAMACHY (TOSOMI) ozone Fit to Neumayer ozone sonde profiles (lat=-71, lon=-8) Problem from assim. of ozone columns

  9. Assimilation of SCIAMACHY (TOSOMI) ozone Fit to SBUV/2 data from NOAA-16 (1 – 23 May 2004) Obs-ana=-10.5 DU Stdv=14.7 DU No SCIA with SCIA Obs-ana=3.2 DU Stdv=14.7 DU Ozone layer: 16 hPa - surface

  10. Conclusions • Passive monitoring shows: • Problems with ESA NRT SCI_RV__2P data before April 2004 (improved after 27 April 2004, but new problems in • October 2004) • Data coverage: Some data not available in NRT • (improved since August2004) • Differences between ESA and KNMI retrievals • (reduced after change on 27 April) • Assimilation of TOSOMI SCIAMACHY data : • Improved fit of ECMWF ozone column and profiles to • independent data • Included in the operational ECMWF system since • 28 September 2004

More Related