1. Altimeter and scatterometer seminar SMHI, March 2012 Altimetry data products Julia Figa Saldaña

2. Altimeter and scatterometer seminar SMHI, March 2012 Outline Altimeter product families – timeliness vs. accuracy Formats Data access (NRT and archive) Visualisation

3. Altimeter and scatterometer seminar SMHI, March 2012 Current altimetry missions with operational data dissemination Jason1OSTM/Jason2ENVISAT-RA2 CNESCNESESANASA ‘Operational aspect’ NOAA EUMETSAT NRT data from Cryosat over ocean have been recently made available are available by NOAA (John.Lillibridge@noaa.gov) – best effort basisJohn.Lillibridge@noaa.gov

4. Altimeter and scatterometer seminar SMHI, March 2012 Jason1 and 2 products overview

5. Altimeter and scatterometer seminar SMHI, March 2012 Jason1 and 2 products overview

6. Altimeter and scatterometer seminar SMHI, March 2012 Jason1 and 2 products overview

7. Altimeter and scatterometer seminar SMHI, March 2012 Jason1 and 2 products overview For Jason1: One NRT product: ‘OSDR’ (equivalent to the ‘OGDR’)

8. Altimeter and scatterometer seminar SMHI, March 2012 ENVISAT RA2 products overview

9. Altimeter and scatterometer seminar SMHI, March 2012 ENVISAT RA2 products overview

10. Altimeter and scatterometer seminar SMHI, March 2012 ENVISAT RA2 products overview

11. Altimeter and scatterometer seminar SMHI, March 2012 Multi-mission products – SSALTO/DUACS Cross-calibrated Common format (netCDF) Minimum timeliness is 1 day – enough for operational oceanography Along-track and also gridded products (1/3 deg x 1/3 deg) Available from AVISO and also on EUMETCast

12. Altimeter and scatterometer seminar SMHI, March 2012 SSALTO/DUACS SSH gridded products (1/3°x1/3° on a Mercator grid) Ssalto/Duacs Gridded Sea level anomalies Contents: gridded sea surface heights computed with respect to a seven-year mean, and corresponding geostrophic velocity anomalies Use: study of ocean variability (mesoscale circulation, seasonal variation, El Niño...), including operational oceanography (near-real time products) Delayed time and NRT (1 day) Ssalto/Duacs Gridded Absolute Dynamic Topography Contents: gridded sea surface heights above geoid and corresponding absolute geostrophic velocities Use: study of the general circulation (ocean gyres...) Delayed time and NRT (1 day) Ssalto/Duacs Monthly mean and Climatology Gridded Sea level anomalies Contents: Monthly and seasonal gridded sea surface heights computed with respect to a seven-year mean (averaged sea surface heights averaging month by month and climatological sea surface heights calculated by averaging sea level anomalies over a same month). Use: long-term variability, seasonal and climate studies Delayed time monthly/ seasonal/ climate Source AVISO

13. Altimeter and scatterometer seminar SMHI, March 2012 SSALTO/DUACS along-track products Ssalto/Duacs Sea level anomalies Contents: along-track sea surface heights, computed with respect to a seven-year mean. Use: study of ocean variability (mesoscale circulation, seasonal variation, El Niño...), including operational oceanography (near-real time products) Delayed time and NRT (1 day) Ssalto/Duacs Absolute Dynamic Topography Contents: along-track sea surface heights above geoid Use: study of the general circulation (ocean gyres...) Delayed time and NRT (1 day) Source AVISO

14. Altimeter and scatterometer seminar SMHI, March 2012 Wind and wave multi-mission gridded products Gridded Wind / Wave products Contents: Near-real time significant wave height and wind speed modulus Use: Marine meteorology, ocean-atmosphere gas transfer studies Description : Gridded (1°x1°, regular grid) Available in netCDF from AVISO and on EUMETCast Delayed time and NRT (1 day) Source AVISO

15. Altimeter and scatterometer seminar SMHI, March 2012 Altimeter NRT products overview Prod Name Param.Spacing of observ. Product duration DelaySourceAccess pointFormat OGDRGlobal SWH, wind speed, range 6 km along track Ground station dump (2-4 h) 2.5 (5 h) EUM+ NOAA EUMETCast/ NOAA DDS/ NASA JPL ftp netCDF OGDR- BUFR EUMETCast/ NOAA DDS/ GTS BUFR OGDR- SSHA EUMETCast/ NOAA DDS netCDF OSDRGlobal SWH, wind speed 6 km along track Ground station dump (2-4 h) 2.5 (5 h) CNESEUMETCast/ AVISO ftp / NASA JPL ftp netCDF Meteo- France (encoding) EUMETCast/ GTS BUFR RA2_ WWV Global SWH, wind speed 7 km along track Ground station dump (<100 min) 3 hESAESRIN ftp/ GTS/ NASA JPL ftp ENVISAT native/ netCDF/BUFR

16. Altimeter and scatterometer seminar SMHI, March 2012 Data bulletins on the GTS J2 OGDR-BUFR ISZX01, originating centres KNES and EUMS J1 OSDR: ISZ[A-D, I-L]01,originating centre LFPW RA2 BUFR: ISXXii (ii from 41 to 60), originating centre EUSR ASCAT OSI SAF global: ISXXii (ii from 01 to 06 for 25 km and 11 to 16 for 12.5 km) originating centre EHDB ASCAT EARS regional: ISXNii (ii from 01 to 06 for 25 km and 11 to 16 for 12.5 km) originating centre EHDB OSCAT – not assigned yet ASCAT Coastal – not assigned yet

17. Altimeter and scatterometer seminar SMHI, March 2012 Helpdesk Jason1: aviso@cls.fr OSTM/Jason2: ops@eumetsat.int ESPCOperations@noaa.gov aviso@cls.fr RA2: eohelp@esa.int

18. Altimeter and scatterometer seminar SMHI, March 2012 Operational and quasi-operational dissemination systems Global Telecommunication System EUMETCast (GEONETCast) Internet-based: NOAA DDS AVISO ftp PODAAC ftp

19. Altimeter and scatterometer seminar SMHI, March 2012 Off-line data access for familiarisation EUMETSAT data centre – ASCAT OSI SAF scatterometer winds and Jason2 OGDR complete product family NOAA CLASS – Jason2 O/I/GDR complete product family AVISO catalogue – Jason1 OSDR and Jason2 O/I/GDR complete family* ESA portal – ENVISAT RA2 complete product family PODAAC – Jason1/2, SeaWinds and ASCAT scatterometer winds in netCDF* * Opendap available

20. Altimeter and scatterometer seminar SMHI, March 2012 Data familiarisation – BRAT tool http://www.altimetry.info/html/data/toolbox_en.html

21. Altimeter and scatterometer seminar SMHI, March 2012 EUMETSAT data centre http://www.eumetsat.int/Home/Main/DataProducts/ProductNavigator

22. Altimeter and scatterometer seminar SMHI, March 2012 EUMETSAT archive user interface http://www.eumetsat.int/Home/Main/DataAccess/EOPortal/

23. Altimeter and scatterometer seminar SMHI, March 2012 NOAA CLASS http://www.class.noaa.gov

24. Altimeter and scatterometer seminar SMHI, March 2012 AVISO Catalogue http://www.aviso.oceanobs.com/

25. Altimeter and scatterometer seminar SMHI, March 2012 ESA portal http://earth.esa.int/dataproducts/

26. Altimeter and scatterometer seminar SMHI, March 2012 PODAAC http://podaac.jpl.nasa.gov/

27. Altimeter and scatterometer seminar SMHI, March 2012 ASCAT data familiarisation for Nowcasting applications

28. Altimeter and scatterometer seminar SMHI, March 2012 http://eumetrain.org/eport.html