slide1
Download
Skip this Video
Download Presentation
Met Office Verification -status

Loading in 2 Seconds...

play fullscreen
1 / 14

Met Office Verification -status - PowerPoint PPT Presentation


  • 95 Views
  • Uploaded on

Met Office Verification -status. Clive Wilson, Presented by Mike Bush at EWGLAM Meeting October 8-11, 2007. Outline. Main systems – area and station Use same packages for operations and R&D Mesoscale Limited area UKindex Trials Precipitation validation – radar, gauges High resolution

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Met Office Verification -status' - trula


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Met Office Verification -status

Clive Wilson, Presented by Mike Bush at EWGLAM Meeting October 8-11, 2007

outline
Outline
  • Main systems – area and station
    • Use same packages for operations and R&D
  • Mesoscale Limited area
    • UKindex
    • Trials
    • Precipitation validation – radar, gauges
    • High resolution
      • Fractions skill
      • Intensity scale
main systems
Main systems
  • 2 systems
      • Ver – only stores area averaged statistics/scores
        • Obs – surface, upper air, satellite winds, aircraft, radar precipitation
        • Analyses
        • Continuous and categorical statistics, skill scores
      • SBV- station based relational database (Oracle)
        • Enables greater flexibility
        • Conditional verification
        • Used for many operational and research forecasts
          • Model
          • Site specific
          • Forecasters
        • Continuous and categorical statistics, skill scores
nae and uk4 verification
NAE and UK4 verification
  • Operational:
    • UK index – surface parameters
    • Verification against radar composites (Nimrod)
    • “fuzzy” – Fractional skill score
  • Research
    • Intensity-scale
uk index
UK Index
  • Screen level Temperature, 10m wind
    • MSE skill
  • 6h precipitation, visibility, cloud cover, cloud base
    • Equitable threat score, 3 thresholds
  • All WMO 03 , UK stations
  • Equal weights to T+6 to +48 by 6h
  • Equal weights to each parameter
  • 36 month contingency tables, running means
  • I=100*S/So, So=value at March 2000
intensity scale 4km model precipitation
Intensity-scale 4km model precipitation

Highlights intensity-scales where worse than random forecast

ad