html5-img
1 / 7

E-AMDAR QEvC update

Q. E-AMDAR QEvC update. Jitze van der Meulen, Sept, 18 th , 2006. E-AMDAR QEvC:. As ASCII encoded ‘Body.txt’ files: XLS format under test. [1] Daily, [2] Monthly and [3] Quarterly reports, all available at QEvC public website:

marv
Download Presentation

E-AMDAR QEvC update

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. Q E-AMDAR QEvC update Jitze van der Meulen, Sept, 18th, 2006

  2. E-AMDAR QEvC: As ASCII encoded ‘Body.txt’ files: XLS format under test [1] Daily, [2] Monthly and [3] Quarterly reports, all available at QEvC public website: • DailyBIAS & GROSS ERRORS of TA, FF, DD & AMOUNT andTIMELINESS of each aircraft • MonthlyOVERVIEW of TRENDS of BIAS of TA, FF & DD and AMOUNTSbased on the daily's [during month refreshed every 3-7 days for an actual trend] • Quarterly EVALUATION with statistics (amount, averages, standard dev.) and gross errors reports + timeliness for a three months period + logistics and operational issues + special studies (analyses) XLS files with macro, showing graphs Delay in production, new ideas for case studies always welcome E-AMDAR QEvC update

  3. QEvC focal issues: QE test and check criteria: to be modified? • Evaluation & requirements of AMDAR systems- to be updated? • Recognizing the improvements- long term trends (> year) ? • Special R&D to investigate weakness/strengths of AMDAR for specific applications- for NWP (Local Area Models) & local use (Aerodrome – actual upper air profiles) • New variables to evaluate? Quarterly reports to report on periods > 3 months ? User oriented QEv ? Selected users? Humidity, turbulence ? E-AMDAR QEvC update

  4. QEvC: special attention to: A suitable, uniform parameter should be defined • Timeliness- definition: t(REC – OBS)?- suitable parameter for evaluation (50% availability interval, or 60 min. delay percentage ?)- time of day dependent ? • Profiles from ASC/DEC:- performance as a function of pressure altitude (PA)- observation density, frequency, timeliness • Suitability of LHW data for NWP (PA = 10 km only)- frequency (availability), area density,timeliness To test PA, local 10’ atm. pressures (QFE) should be made available Specific requirements to be investigated for long haul data E-AMDAR QEvC update

  5. QEvC features: • Automatic Daily QEv of- temperature TA, wind speed (FF) & -direction (DD)using HITLAM (3H update) as reference.- timeliness t(TEC)-t(OBS),special check:t(OBS) < t(REC)* • Manual QEv, part of special cases (rather complex):- pressure altitude PA,special check: PA[Aerodrome] < PA[aircraft] *- position LAT/LONspecial check: LAT/LON [first OBS of ASC] or [last OBS of DES]  LAT/LON [Aerodrome] * * Note:TA, FF and FF QEv is affected by incorrect LAT/LON or PA ! E-AMDAR QEvC update

  6. QEvC: new activities • Trends in timeliness (and TA, FF, DD), using an special XLS application (using ~ 10 days of the daily XLS-s): performed by the operator using the daily results (under development) • Local coverage analyses (per aerodrome) (case studies only?):- amounts by contour plots of ASC/DES data- frequency of availability- timeliness analyses. • Control of code formats (ASCII, BUFR)(daily, weekly, monthly?) E-AMDAR QEvC update

  7. Comments and suggestions are very welcome ! All reports & software are available at:QEVC Website: http://www.knmi.nl/~meulenvd/eumetnet/E-Amdar/QEvC/ Also: ASDAR: http://www.knmi.nl/samenw/geoss/wmo/Amdar/ASDAR Middle East AMDAR:http://www.knmi.nl/samenw/geoss/wmo/Amdar/ARABIA/index.htm • Daily reports (update ~ every 4 days) • Monthly report (actual: update ~ every 4 days) • Quarterly reports Q E-AMDAR QEvC update

More Related