1. QEvC issues Jitze van der Meulen, 20 Sept. 2005

2. Feedback mechanism Data generator Data use 1. Data control and validation versus reference 2. Evaluation versus requirements 3. Improvements versus technology 1. automatically?  part of control, automatic pre- validation & control 2. Manually by the operator * 3. R&D project

3. choice 1 data & warning, rather automatically, the easy way e.g. on-line via desktop 2 data & application, manually, help yourself e.g. by XLS macro

4. Presentaion of errors & bias  Gross errors & bias like in GDPS  Distribution & standard deviation

5. By aircraft Aircraft type Median LVR/LVW /°C Median ASC/DES /°C Median all data /°C width (50%) /°C A-300, A-3100.150.240.230.41 A-318, A-319, A-320, A- 321 0.46-0.040.060.90 A-320-0.22-0.17-0.180.29 A-318, A-319, A-3210.760.640.710.40 A-330, A-3400.180.090.140.30 B-7370.040.020.030.36 B-7470.080.07 0.30 B-757, B-767-0.050.080.050.48

6. Pressure altitude control

7. Position (lat, lon)

8. BUFR issues BUFR record length: 326 Edition number (should be 3!) : 2 Section 1 (length 18): Master table number : 0 Originating/generating sub-centre: 0 Originating/generating centre : 74 Update sequence number : 0 Optional section indicator : 0 ==> Optional section present : No Data category : 4 Data sub-category : 255 Version number of master tables : 2 Version number of local tables : 1 Year of century : 5 Month : 6 Day : 15 Hour : 13 Minute : 7 Byte 18 : 0 ------- Subset 1 (with 35 elements): 311001 Sequence: SINGLE LEVEL REPORT: ASDAR/AIR -1000000000 301051 Sequence: AIRCRAFT STATION DATA -1000000000 001006 AIRCRAFT FLIGHT NUMBER CCITT_IA5 LH3101 002061 AIRCRAFT NAVIGATIONAL SYSTEM CODE_TABLE 0 301011 Sequence: DATE -1000000000 004001 YEAR YEAR 2005 004002 MONTH MONTH 6 004003 DAY DAY 15 End Seq End Sequence -1000000000 301012 Sequence: HOUR/MINUTE -1000000000 004004 HOUR HOUR 13 004005 MINUTE MINUTE 7 End Seq End Sequence -1000000000 301021 Sequence: LATITUDE/LONGITUDE -1000000000 005001 LATITUDE (HIGH ACCURACY) 10**-5 DEGREE 5585500 006001 LONGITUDE (HIGH ACCURACY) 10**-5 DEGREE 1658667 End Seq End Sequence -1000000000 008004 PHASE OF AIRCRAFT FLIGHT CODE_TABLE 3 End Seq End Sequence -1000000000 007002 HEIGHT OR ALTITUDE (VERT.LOCATION) 10** 1 M 1159 012001 TEMPERATURE/DRY BULB TEMPERATURE 10**-1 K 2167 011001 WIND DIRECTION DEGREE_TRUE 228 011002 WIND SPEED 10**-1 M/S 108 011031 DEGREE OF TURBULENCE CODE_TABLE -1000000000 011032 HEIGHT OF BASE OF TURBULENCE 10** 1 M -1000000000 011033 HEIGHT OF TOP OF TURBULENCE 10** 1 M -1000000000 020041 AIRFRAME ICING CODE_TABLE -1000000000 End Seq End Sequence -1000000000 007007 HEIGHT M -1000000000 011036 MAXIMUM DERIVED EQUIVALENT VERTICAL GUST 10**-1 M/S -1000000000 011076 PEAK TURBUL.INTENSITY (EDDY DISS.RATE) 10**-2 M**(2/3)/S -1000000000 001008 AIRCRAFT REGISTRATION NUMBER CCITT_IA5 EU1498 002005 PRECISION OF TEMPERATURE OBSERVATION 10**-2 K -1000000000 002062 TYPE OF AIRCRAFT DATA RELAY SYSTEM CODE_TABLE 3 002064 AIRCRAFT ROLL ANGLE QUALITY CODE_TABLE 0

9. FM42 issues (not E-AMDAR) [2005-09-19] UDAF01 OEJD 190723 AMDAR 1906 ASC SVHZAPJ 1747N 04510E 0646 F163 MS040 034/012 TB/ S011= ASC SVHZAPJ 1747N 04513E 0646 F175 MS075 041/015 TB/ S011= ASC SVHZAPJ 1748N 04516E 0647 F186 MS100 041/015 TB/ S011= ASC SVHZAPJ 1749N 04520E 0648 F197 MS067 204/006 TB/ S011= /// SVHZAPJ 1755N 04555E 0653 F230 MS117 247/016 TB/ S111= DES SVHZAPJ 1741N 04641E 0700 F135 PS037 041/024 TB/ S011= /// SVHZAPJ 1729N 04703E 0707 F047 PS292 186/014 TB/ S111= DES SVHZAPJ 1730N 04710E 0709 F026 PS360 214/017 TB/ S011= ))) SVHZA)) ))))) )))))) )))) F))) ))))) )))/))) TB) ))))= ))) SVHZA)) ))))) )))))) )))) F))) ))))) )))/))) TB) )))) 333 F))) VG)))= UDAS01 RJTD 181000 PAB AMDAR 1810 LVR JP9Z4U57 3508N 13859E 180928 F310 MS330 224/032 TB/ S031 333 F310 VG///= LVR JP9Z4WV4 3337N 13600E 180928 F390 MS550 275/014 TB/ S031 333 F390 VG///= LVR JP9ZVYYZ 3403N 13044E 180929 F/// PS100 294/018 TB/ S031 333 F105 VG///= LVR JP9Z4WVU 3448N 13955E 180925 F170 MS030 289/005 TB/ S031 333 F170 VG///= LVR JP9Z4WVU 3454N 14024E 180930 F/// PS070 338/007 TB/ S031 333 F107 VG///= LVR JP9ZVY6Z 3441N 13903E 180930 F240 MS140 245/023 TB/ S031 333 F240 VG///= UDAS02 BABJ 181045 AMDAR 1810 LVR B-2221 3655N 11702E 181045 F255 ///// /////// TB/ S//1=

10. Timeliness: definition of parameter % % 50% time

11. Timeliness: definition of parameter 2004Q3

12. Timeliness Δ t : synchronisation of UTC 2004Q3 Δt < 0 Δt = 0

13.  ?