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BUREAU OF METEOROLOGY, AUSTRALIA
MONITORING OF THE QUALITY OF
LAND SURFACE OBSERVATIONS
IN RA-V
CONSOLIDATED LIST OF SUSPECT
STATIONS
JANUARY - JUNE 2001
REPORT No. 9
Data Management Section
Central Operations & Systems
Branch
Bureau of Meteorology, Australia
CONTENTS
1. Introduction
2.
Global Data Monitoring Statistics
3.1 Plot of Suspect Stations for Land
Surface Observations for MSLP on RA-V world map
3.2 Plots of Suspect Stations showing residuals of MSLP
1. Introduction
Within the
Data Management Section (DMS) of the Bureau Of Meteorology (Australia) lie
responsibilities for collecting a full set of meteorological data in real-time
from the WMO Global Observing System, and for making such data available to Analysis_Prognosis
models along with some indication as to reliability of report content.
Real-time
judgement as to whether a reported element be assimilated by models relies
largely on first guess fields, supplemented by observations from any
neighbouring stations. Additionally, listings of platforms which are currently
considered suspect are presented to the Analysis model.
To monitor
platform performance, and also to expose likely positional errors, selected
reported elements are paired with the interpolated first-guess value from the
global model (6 hour forecast field) and analysed statistically each 6 months
in a format which accords with the CBS recommended standards for the exchange
of monitoring results. All observations used are unvalidated or "raw"
data.
As part of
WMO responsibilities as a WMC, copies of this report are made available to
major GDPS Centres participating in data monitoring activities.
2. Global Data Monitoring Statistics
The
following table and figures contain information relating to the monitoring of
the quality of land surface observations in Region V.
To achieve
more complete reporting profiles for the investigation of suspect stations,
observations were not retrieved for statistical analysis until 24 hours after
real-time, thus not all values used in such computations may have been
available to the assimilation processing.
Further
figures will be incorporated into this document as more comprehensive quality
control procedures are implemented by Data Management.
2.1 Land Surface Observations (Synop)
Table 1
contains a list of synoptic stations which are considered to have reported
suspect observations of mean sea level pressure (MSLP) during the 6 months.
The
criteria for quality control are given on the header page of Table 1. Stations
which exhibited 100% gross errors for the 6 months are included, with asterisks
substituted for their poorly defined statistical measures.
Mr. B.
Sumner
Manager
Data
Management Section
Central
Operations & Systems Branch
Australia
TABLE 1
MONITORING OF
SURFACE DATA
MONTHLY SUSPECT
LIST
MONITORING CENTRE:
DMS MELBOURNE
JANUARY to JUNE
2001
********************
MONITORING PROCEDURES :-
PERIOD : SIX
CALENDAR MONTHS
DATA MONITORED :
REPORTS FROM EACH UNIQUE IDENTIFIER
FOR SYNOP
AREA : FULL
GLOBAL
STANDARD OF COMPARISON :
+6H FIRST GUESS FIELD FROM THE AUSTRALIAN GLOBAL
ASSIMILATION PREDICTION (GASP) MODEL
OBSERVATION TIMES :
00, 06, 12, 18 UTC
ELEMENT MONITORED :
MSLP - MEAN SEA LEVEL PRESSURE (hPa)
PARAMETERS MONITORED :-
NOBS :
NUMBER OF OBSERVATIONS RECEIVED (WITH FIRST
GUESS
AVAILABLE) EXCLUDING DUPLICATES
NGE :
NUMBER OF OBSERVATIONS WITH GROSS ERRORS
PGE :
PERCENTAGE OF OBSERVATIONS WITH GROSS ERRORS
SD :
STANDARD DEVIATION OF DIFFERENCE BETWEEN
OBSERVATIONS AND BACKGROUND FIELD
EXCLUDING
OBSERVATIONS WITH GROSS ERRORS
BIAS
: MEAN OF DIFFERENCE BETWEEN
OBSERVATIONS AND BACKGROUND FIELD
EXCLUDING
OBSERVATIONS WITH GROSS ERRORS
RMS :
ROOT MEAN SQUARE OF DIFFERENCE BETWEEN
OBSERVATIONS AND BACKGROUND FIELD
EXCLUDING
OBSERVATIONS WITH GROSS ERRORS
GROSS ERROR LIMIT :
15.0 hPa
SELECTION CRITERIA :
NOBS >= 120 AND ONE OR MORE
OF THE FOLLOWING:
1. |BIAS|
>= 3.0hPa
2.
SD >= 5.0hPa
3.
PGE >= 25%
MONTHLY LIST OF
SUSPECT LAND SURFACE STATIONS FOR JAN to JUN 2001
-------------------------------------------------------------------
WMO REGION 1
STN NO. LAT
LONG HT(M) TIME ELEM
NOBS NGE PGE
SD BIAS RMS
61492 16.1
-13.5 18 ALL
MSLP 356 0
0 1.4 3.5
3.8
62271 24.2
23.3 436 ALL
MSLP 446 2
0 1.6 3.8
4.2
62941 4.9
31.6 457 ALL
MSLP 159 1
1 2.8 3.6
4.6
65401 10.9
-1.1 203 ALL
MSLP 155 0
0 1.6 4.3
4.5
65404 10.1
-2.5 323 ALL
MSLP 258 0
0 1.4 3.7
4.0
65416 9.0
-2.5 301 ALL
MSLP 223 0
0 1.9 3.0
3.6
65418 9.5
-0.9 173 ALL
MSLP 175 0 0 1.5 3.7
3.9
68016 -19.3
12.7 0 ALL
MSLP 313 0
0 2.1 3.9
4.5
WMO REGION 2
STN NO. LAT
LONG HT(M) TIME ELEM
NOBS NGE PGE
SD BIAS RMS
24688 63.3
143.1 741 ALL
MSLP 713 97
14 5.8 1.9
6.1
30967 49.9
115.8 623 ALL
MSLP 525 2
0 2.5 -6.1
6.6
31137 56.3
131.1 850 ALL
MSLP 709 12
2 5.4 1.9
5.7
36535 48.8
82.4 512 ALL
MSLP 711 4
1 3.3 3.6
4.9
40700 39.7
48.1 45 ALL
MSLP 432 0
0 2.0 -4.5
4.9
40726 36.8
45.7 1385 ALL
MSLP 457 2
0 3.0 3.4
4.5
40741 36.5
61.2 236 ALL
MSLP 465 0
0 2.2 -3.9
4.5
40754 35.7
51.3 1191 ALL
MSLP 611 1
0 3.1 -3.3
4.5
40757 35.5
53.4 1171 ALL
MSLP 426 0
0 3.3 -3.6
4.9
41396 16.0
49.0 700 ALL
MSLP 330 0
0 1.4 4.6 4.8
41530 34.0
71.6 360 ALL
MSLP 419 0
0 2.0 -3.0
3.7
44203 51.1
99.7 1583 ALL
MSLP 688 94
14 5.3 3.0
6.0
44207 50.4
100.2 1687 ALL
MSLP 689 13
2 5.0 1.9
5.4
44212 49.8
92.1 936 ALL
MSLP 687 144
21 5.6 3.4
6.5
44213 49.7
94.4 1232 ALL
MSLP 688 105
15 5.6 3.0
6.4
44215 49.1
91.7 1591 ALL
MSLP 665 12
2 5.4 -.5
5.4
44218 48.0
91.7 1406 ALL
MSLP 695 11
2 5.6 -2.4
6.1
44225 48.7
98.3 1723 ALL
MSLP 652 133
20 5.7 2.6
6.2
44265 46.1
91.6 1186 ALL
MSLP 668 106
16 5.1 4.6
6.9
44272 47.8
96.8 1753 ALL MSLP
672 17 3
6.3 -.6 6.3
44275 46.8
98.1 2255 ALL
MSLP 689 26
4 6.3 -.9
6.3
44277 46.4
96.3 2147 ALL
MSLP 691 6
1 5.1 -1.6
5.3
44284 46.7
100.1 2117 ALL
MSLP 694 31
4 5.5 2.8
6.2
50727 47.2
119.9 1028 ALL
MSLP 719 0
0 2.6 3.0
4.0
51076 47.7
88.1 737 ALL
MSLP 719 2
0 4.0 3.7
5.4
51087 47.0
89.5 827 ALL MSLP 718
16 2 4.5 4.3 6.2
51334 44.6
82.9 321 ALL
MSLP 717 3
0 3.7 3.5
5.1
51379 44.0
89.6 794 ALL
MSLP 719 8
1 4.4 3.4
5.6
51463 43.8
87.7 919 ALL
MSLP 719 4
1 4.1 3.0
5.1
51495 43.5
91.6 874 ALL
MSLP 717 21
3 2.9 7.5
8.0
51747 39.0
83.7 1099 ALL
MSLP 719 2
0 5.0 -1.1
5.2
51777 39.0
88.2 889 ALL
MSLP 718 0
0 5.4 -1.2 5.5
53192 44.0
114.9 1128 ALL
MSLP 718 0
0 2.8 3.6
4.5
54587 39.0
123.2 10 ALL
MSLP 711 0
0 1.4 -3.7
4.0
56096 33.4
104.9 1079 ALL
MSLP 720 0
0 3.2 -3.3
4.6
WMO REGION 3
STN NO. LAT
LONG HT(M) TIME ELEM
NOBS NGE PGE
SD BIAS RMS
80099 7.1
-70.7 128 ALL
MSLP 260 0
0 1.8 -5.6
5.9
80315 3.0
-75.3 443 ALL
MSLP 473 0 0 1.6
-3.3 3.7
82331 -3.1
-60.0 72 ALL
MSLP 523 0
0 1.3 3.1
3.4
82445 -4.3
-55.6 45 ALL
MSLP 518 0
0 1.1 3.2
3.4
82678 -6.8
-43.0 127 ALL
MSLP 524 0
0 1.0 3.3
3.5
82765 -7.3
-47.5 193 ALL
MSLP 503 0
0 1.2 3.6
3.8
82780 -7.1
-41.5 208 ALL
MSLP 521 0
0 1.0 3.1
3.2
83214 -10.3
-54.9 285 ALL
MSLP 500 1
0 4.2 -6.4
7.6
83319 -14.7
-52.3 315 ALL
MSLP 509 0
0 1.5 4.2
4.5
83361 -15.6
-56.1 151 ALL
MSLP 511 0
0 1.8 3.9
4.3
83773 -23.1
-48.9 793 ALL
MSLP 503 3
1 1.5 -10.8
10.9
84401 -5.2
-80.6 55 ALL
MSLP 567 0
0 1.7 5.6
5.8
84425 -5.9
-76.1 184 ALL
MSLP 193 0
0 1.5 5.0
5.3
84452 -6.8
-79.8 34 ALL
MSLP 562 1
0 1.9 3.3
3.8
84455 -6.4
-76.4 282 ALL
MSLP 410 2
0 2.4 6.0
6.5
84501 -8.1
-79.0 30 ALL
MSLP 418 1
0 1.5 4.8
5.1
84515 -8.4
-74.6 149 ALL
MSLP 561 0
0 2.0 3.2
3.8
84720 -14.9
-74.9 567 ALL
MSLP 272 0
0 1.3 5.3
5.5
84782 -18.1
-70.3 458 ALL
MSLP 454 0
0 1.6 8.0
8.2
85041 -11.0
-68.8 235 ALL
MSLP 284 1
0 1.6 6.3
6.5
85141 -14.5
-67.6 204 ALL
MSLP 209 0
0 1.9 3.7
4.1
85365 -22.0
-63.7 645 ALL
MSLP 243 0
0 2.5 3.7
4.4
85394 -22.8
-64.3 381 ALL
MSLP 197 0
0 2.4 4.2
4.8
85406 -18.4
-70.3 55 ALL
MSLP 706 0
0 1.6 5.2
5.4
85418 -20.5
-70.2 48 ALL
MSLP 711 0
0 1.5 4.3
4.6
85442 -23.4
-70.4 140 ALL
MSLP 714 0
0 1.3 3.4
3.7
85836 -43.6
-71.8 277 ALL
MSLP 231 1
0 1.8 3.3
3.7
87222 -28.6
-65.8 454 ALL
MSLP 686 1
0 2.5 -3.3
4.1
87803 -42.9
-71.2 785 ALL
MSLP 706 2
0 2.4 -3.5
4.3
WMO REGION 4
STN NO. LAT
LONG HT(M) TIME ELEM
NOBS NGE PGE
SD BIAS RMS
71075 58.2
-103.7 492 ALL
MSLP 284 0
0 3.4 -3.6
5.0
71498 66.1
-96.5 61 ALL
MSLP 228 0
0 2.4 -3.9
4.6
71506 67.0
-136.2 720 ALL
MSLP 706 3
0 2.7 -5.2
5.8
71977 68.8
-140.8 542 ALL
MSLP 207 0
0 2.6 -3.2
4.1
72375 35.1
-11.2 2139 ALL
MSLP 675 68
10 6.1 -2.6
6.6
72570 40.5
-107.5 1915 ALL
MSLP 649 2 0 4.3
3.8 5.7
76118 30.4
-109.7 1040 ALL
MSLP 188 2
1 5.8 -8.2
10.0
76220 29.0
-107.8 1932 ALL
MSLP 348 24
7 4.5 7.6
8.8
76243 28.7
-100.5 250 ALL
MSLP 473 1
0 2.1 5.3 5.7
76323 26.9
-105.7 1661 ALL
MSLP 417 5
1 4.6 4.8
6.7
76390 25.5
-101.0 1790 ALL
MSLP 558 0
0 2.6 -3.1
4.0
76632 20.1
-98.7 2417 ALL
MSLP 124 1
1 3.0 -5.9
6.6
76658 19.2
-103.7 494 ALL
MSLP 194 0
0 1.7 5.3
5.6
76680 19.4
-99.2 2303 ALL
MSLP 171 0
0 3.3 -5.0
6.0
76687 19.5
-96.9 1389 ALL
MSLP 604 0
0 2.0 3.9
4.4
76726 18.9
-99.2 1618 ALL
MSLP 457 0
0 2.5 -4.4
5.1
76743 18.0
-92.9 10 ALL
MSLP 502 0
0 1.5 5.6
5.8
76762 17.5
-99.5 1265 ALL
MSLP 452 0
0 2.1 -5.1
5.5
76773 17.8 -97.8 1680
ALL MSLP 160
0 0 2.2 3.1 3.8
76843 16.8
-93.1 528 ALL
MSLP 517 0
0 1.2 5.4
5.6
76855 15.6
-96.5 43 ALL
MSLP 327 0
0 1.9 -3.1
3.6
76903 14.9
-92.3 118 ALL
MSLP 539 0
0 1.5 5.9
6.1
78482 18.2
-71.1 12 ALL
MSLP 389 0
0 2.5 -3.8
4.6
STN NO. LAT
LONG HT(M) TIME ELEM
NOBS NGE PGE
SD BIAS RMS
78718 14.4
-89.2 626 ALL
MSLP 191 0
0 1.4 -3.0
3.3
WMO REGION 5
STN NO. LAT
LONG HT(M) TIME ELEM
NOBS NGE PGE
SD BIAS RMS
92010 -6.1
145.4 1587 ALL
MSLP 271 0
0 1.1 9.3
9.4
96753 -6.5
106.8 250 ALL
MSLP 143 0
0 .8 6.0
6.0
97008 3.6
125.5 38 ALL
MSLP 501 0
0 .8 3.3
3.4
97126 -2.5
120.4 50 ALL
MSLP 610 0
0 1.2 -3.3
3.5
97378 -10.7
123.1 1 ALL
MSLP 264 192
73 3.4 -13.4
13.8
WMO REGION 6
STN NO. LAT
LONG HT(M) TIME ELEM
NOBS NGE PGE
SD BIAS RMS
14528 44.8
15.9 250 ALL
MSLP 331 0
0 3.0 3.6
4.7
37788 42.2
44.4 854 ALL
MSLP 689 2
0 5.1 -2.5
5.7
40296 31.0
35.5 -350 ALL
MSLP 685 0
0 1.3 3.3
3.6
WMO REGION ANTARCTICA
STN NO. LAT
LONG HT(M) TIME ELEM
NOBS NGE PGE
SD BIAS RMS
89512 -70.8
11.8 102 ALL
MSLP 694 2
0 2.3 -3.1
3.8
3. 1 Plot of
Suspect Stations for Land Surface Observations for MSLP on RA-V world map
3.2 Plots of Suspect Stations
Showing Residuals of MSLP
