1 / 22

COST723-WG1- Working Group I: Data and Measurement Techniques Overview Herman G.J. Smit

Objectives WG1: Collecting of observational data of key parameter Data access Assessment of data & techniques of observations. COST723-WG1- Working Group I: Data and Measurement Techniques Overview Herman G.J. Smit

hinto
Download Presentation

COST723-WG1- Working Group I: Data and Measurement Techniques Overview Herman G.J. Smit

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. Objectives WG1: • Collecting of observational data of key parameter • Data access • Assessment of data & techniques of observations COST723-WG1- Working Group I: Data and Measurement Techniques Overview Herman G.J. Smit Research Centre Jülich, Institute for Chemisty and Dynamics of the Geosphere: Troposphere (ICG-II), P.O. Box 1913, 52428 Juelich, Germany (Email: h.smit@fz-juelich.de) Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  2. COST723-WG1: Collecting of data of key parameter (1) Key parameter are ??? • Identification (September 2001) of: • Humidity • Ozone • Temperature • Pressure Elaborate at this Workshop with requirements from WG 2&3 Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  3. COST723-WG1: Collecting of data of key parameter (2) Observation platforms are ??? • Ground based: • Balloon sondes • Remote sensing • Aircraft: • In-situ • Remote sensing • Satellites: • Remote sensing Set up Inventory at this Workshop Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  4. Elaborate at this Workshop COST723-WG1: Collecting of data of key parameter (4) Data access already on-line available??? On-line available: Documentation data access Not on-line available: Create data base for on-line access • Data Protocoll • Documentation of data usage Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  5. COST723-WG1: Assessment of Data & Techniques (1) Assessment of ??? • Instrumentation & Data sets • Documentation of • Techniques • Sampling • Precision &Accuracy • Data Quality • Comparability of data from different platforms through: • Cross validation of data sets • In-situ intercomparisons • Is there a standard data set Action plan at this Workshop Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  6. SPARC Assessment of Upper Tropospheric and Stratospheric Water Vapour 2000 STRATOSPHERIC PROCESSES AND THEIR ROLE IN CLIMATE SPARC A project of the WMO/ICSU/IOC World Climate Research Programme COST723-WG1: Assessment of Data & Techniques (2) State of the Art for Ozone and Water Vapor: SPARC-Assessments Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  7. Chapter 1: Instrumentation and Data Sets Chapter 2: Data Quality Chapter 3: Distribution and Variability of H2O in UT and Stratosphere SPARC Assessment of Upper Tropospheric and Stratospheric Water Vapour 2000 • However: • Strong Focus on Stratosphere • Lack of reliable H2O in UT/LS Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  8. SPARC Assessment of Upper Tropospheric and Stratospheric Water Vapour 2000 Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  9. MOZAIC-UTH: Comparison with MLS/UARS Satellite • MLS observe no ice super saturation (retrieval and/or limited horizontal resolution) • MLS lower than MOZAIC (Slope=0.64) • Large variations due to • Atmospheric variability & • Limited resolution of MLS (Z=4-5 km) Source: Read et al., UARS Microwave Limb Sounder upper tropospheric humidity measurement: Method and validation, J. Geophys. Res., 2000 Coincidence criterion: 1º x 1º x 1 km x 3 h Total: 384 Coincidences Aug.1994-Dec.1997 Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  10. MOZAIC-UTH: Comparison with POEM III Satellite 400 • POEM III= Polar Ozone and Aerosol Measurement III satellite operational since April 1998 • Good agreement POEM with MOZAIC (Slope=0.98) • Large variations due to • Atmospheric variability & • Limited resolution of POEM (X=250 km) Slope = 0.98 (r=0.70) Offset= 3.6 ppmv 300 200 MOZAIC-UTH (ppmv) 100 0 Source: Nedoluha et al., POAM III measurements of water vapor in the upper troposphere and lower most stratosphere, J. Geophys. Res., 2002 100 300 400 200 POEM-UTH (ppmv) Coincidence criterion: 2.5º x 2.5º x 1 km x 6 h Total: 200 Coincidences April 1998-Feb.2000 Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  11.  FISH-Lyman()  CRISTA-Satellite  CRISTA-Satellite Z=12.5 km Lat.35o-45oN Source: Offermann et al. J. Geophys.Res., 107, 2002 Coincidence in Time and Space (1): Water Vapor Variability Versus Horizontal Scale Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  12. Coincidence in Time and Space (2): CRISTA versus FISH Source: Offermann et al. J. Geophys.Res., 107, 2002 Source: Offermann et al. J. Geophys.Res., 107, 2002 Pressure: 160-280 hPa X  200 km ; t  2 hours N = 413 , Corr.Coef=0.93 Pressure: 175-225 hPa X  50 km ; t  2 hours N = 28 , Corr.Coef=0.97 Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  13. Coincidence in Time and Space (3): CRISTA versus CRISTA (Eigen Scatter) Source: Offermann et al. J. Geophys.Res., 107, 2002 Pressure: 215 hPa ; X  400 km ; t  2 hours ; Shaded Area is instrumental noise (11%) Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  14. RS80-Humicap-A: Comparison UTH with MOZAIC • Radiosounding station Lindenberg at 14.1oE, 52.2oN • Coindence less than (1 hour ; 2 degree lat. & long. ; ZAC +/-250m ) Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  15. Integrated Global Atmospheric Chemistry Observations IGACOAs part of IGOS = Integrated Global Observing Strategy Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  16. IGACO-Theme Report (Draft January 2004): Time Line Water Vapor Integrated Global Atmospheric Chemistry Observations System Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  17. LAUTLOS: Hygrometer intercomparison campaign at Sodankylä, February 2004 Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  18. Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  19. Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  20. IGACO-Theme Report (Draft January 2004): Time Line Stratospheric Ozone Integrated Global Atmospheric Chemistry Observations System Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  21. Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

  22. IGACO-Theme Report (Draft January 2004): Time Line Tropospheric Ozone Integrated Global Atmospheric Chemistry Observations System Herman G.J. Smit/FZJ-COST723-WG-I Overview Noordwijk-11-13 March 2004

More Related