QEv Centre, current status, new developments

1

• QEv Centre, current status, new developments
• Daily BIAS GROSS ERRORS of TA, FF DD and
  TIMELINESS of each aircraft (as BODY.TXT, also
  possible as XLS)
• Monthly OVERVIEW of TRENDS of BIAS of TA, FF DD
  based on the daily's refreshed every 3-7 days
  for an actual trend as XLS fig.s TBD
  Timeliness
• 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) for further RD

2

• Status Quo
• High degree of automation, low personal costs
• Focus on QEv - user interface, to stimulate
  feed-back (however feed back from operators to
  QEv is minimal-will not stimulate improvements)
• Daily data-set Applications and actual
  "Monthly" XLS provide a "help yourself" utility
• Technical coordinator (ST) take care for direct
  action, if necessary
• Quarterly reports informs on the overall status
  of the E-AMDAR systems and provide case issues
  triggering improvements.

3
Possible developments

• Automatic messaging (by QEvC to operators)
• Additional applications (local by operators)
• N x (e.g.. 10) daily TXT ? XLS with selected
  aircraft
• Application (XLS) macro linked to N XLS ?
  trend in TA, FF, DD timeliness

4
(No Transcript)
5
(No Transcript)
6
Outside HIRLAM area other background

• Instantaneously (real time availability of
  actual background), every 3H refresh (2x to Ev.
  delayed data)
• Input lat, lon, alt UTC ? TA, FF, DD

7
(No Transcript)
8
Criteria The critical (absolute) margins used for
selecting entries are          Air
Temperature TA(O)-TA(B) ? 0,5 ?C (0,5
K)          Wind speed f(O)f(B) ? 2,0 m/s
(? 4 Knots)          Wind direction d(O)d(B)
? 20 ? (Degrees) No criterion is stated
concerning standard deviations.
9
dK
10
(No Transcript)
11
Gross errors
For a number of observations extreme temperature
differences were observed
Aircraft with occasionally extreme temperature
differences (?T gt 20 K) are EU1035, EU2405,
EU3421, EU7864 and EU8736.
12
(No Transcript)
13
(No Transcript)
14
(No Transcript)
15
(No Transcript)
16
(No Transcript)
17
(No Transcript)
18
(No Transcript)
19
Case studies ?

• New issues for U or t-dew
• Profile specific
• Aircraft type related
• Spatial distribution
• Availability (interval distribution)
• Applications oriented
• BUFR code issues
• Turbulence data

20
(No Transcript)