1 / 7

E-AMDAR QEvC update

Q. E-AMDAR QEvC update. Jitze van der Meulen, March, 5 th , 2006. E-AMDAR QEvC:. [1] Daily, [2] Monthly and [3] Quarterly reports, all available at QEvC public website: Daily BIAS & GROSS ERRORS of TA, FF & DD and AMOUNT and TIMELINESS of each aircraft

benedict-mcleod
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, March, 5th, 2006

  2. E-AMDAR QEvC: [1] Daily, [2] Monthly and [3] Quarterly reports, all available at QEvC public website: • DailyBIAS & GROSS ERRORS of TA, FF & DD andAMOUNT 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)

  3. QEvC focal issues: • 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)

  4. QEvC: special attention to: • 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

  5. QEvC features: • Automatic 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,check only: PA[Aerodrome] < PA[aircraft]- position LAT/LONcheck only: 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

  6. QEvC: possible new activities • Trends in timeliness (and TA, FF, DD), using an special XLS application (using ~ 10 days of the daily XLS-s) • Local coverage analyses (per aerodrome):- amounts by contour plots of ASC/DES data- frequency of availability- timeliness analyses.

  7. Q ? QEVC Website: http://www.knmi.nl/~meulenvd/eumetnet/E-Amdar/QEvC/

More Related