ICOADS Web information page (Monday, 21-May-2012 17:02:13 UTC):

UK Met. Office VOSClim GTS BUFR Data

(A) Comparisons of Release 2.5 input data with deck 700 expanded UK Met. Office VOSClim GTS BUFR test data

Figures 1-3 and Examples 1-3 provide duplicate elimination results comparing Release 2.5 (R2.5) input data with a new test file (vosclimbufr700_test_imma.dat) of deck 700 data. In these results we have looked at the ship data versus real-time and delayed-mode receipts from these other decks:
  • 792 US Natl. Cntrs. for Environ. Pred. (NCEP) BUFR GTS: Ship Data
  • 926 International Maritime Meteorological (IMM) Data
  • 927 International Marine (US- or foreign-keyed ship data)
First, all the original deck 700 data were removed from the R2.5 input. Then one month (12/2003) of the new test file was preprocessed to remove exact duplicates (which resulted in a reduction to just 11% of that month's original size).


Figure 1. Deck 700 vosclimbufr700_test_imma.dat 12/2003 certain duplicates (DUPS 8-13) with deck 792. For each element, stacked bars of agreement (blue) vs. disagreement (red) (where missing vs. extant data counts as disagreement); and total extant deck 792 (+) and deck 700 (x). Thus any displacement between the symbol and the top of the bar represents missing data.

Examples 1. Transient matches between decks 792 vs. 700 (NCEP BUFR vs. VOSClim BUFR).
  • DS (ship course) noteworthy differences: deck 700 DS missing when deck 792 DS = 0 - stationary or 9 - unknown.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 1   0 6210 28530 0  000   1VCLM       0 104 51       98901  4  -50      -123          A               165  98  792
    200312 1   0 6210 28530 0 00 0   1VCLM       0 104 51       9890      -50      -123                          165  98  700
                                ^
    20031213 600 5040 32480 0  095   1MYMX5      02700 40 98 11101792  3   850  64   36 1 110411 50A   3     6 2 165 138  792
    20031213 600 5040 32480 0 00 5   1MYMX5      02700 40 98 1110179       850  64   36   110411 50              165 138  700
                                ^
    
  • D (wind direction) noteworthy differences: deck 700 D missing when deck 792 D = calm or variable.
                             A                                               W    D                              A A         
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 1 600-5870 29770 0  033   1ZDLP       03613  0 98 22100044  0    90   7    4 3  29887 AAA   0 021 6 3 165 531  792
    200312 1 600-5870 29770 0 0033   1ZDLP       0   3  0 98 2210004        90   7    4 3  29887                 165 531  700
                                                  ^^^                                                                        
    200312 11200 3740 19600 0  065   1WCX8884    03623180 98 21102452 25   900  50    0      335 6AA    11 01511 165 197  792
    200312 11200 3740 19600 0 0065   1WCX8884    0   3180 98 2110245       900  501  -2      335 6               165 197  700
                                                  ^^^                                                                        
    
  • WW (present weather) noteworthy differences: deck 700 WW missing when deck 792 WW = 0 - Cloud development not observed or not observable.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 1 500 4790 31180 0  071   1CFD3659    02104 72 97 02101163 12   34        23 3  27    A     4 1       165 173  792
    200312 1 500 4790 31180 0 0071   1CFD3659    02104 72 97  210116       34        23 3  27                    165 173  700
                                                            ^^                               ^^^^^^^
    200312 52100 4040   580 0  074   1FNCI       01204 98 98 00102200  2  160       110 3 1800 0 A00   4 213 6 4 165 178  792
    200312 52100 4040   580 0 0074   1FNCI       01204 98 98  010220      160       110 3 180000  00             165 178  700
                                                            ^^                               ^^^^^^^
    200312 71800-1860 12070 0  013   1V2FM       0 903 51 97 00100586 10  2620 259  258      0 0 900   4 110 7 3 165 370  792
    200312 71800-1860 12070 0 0013   1V2FM       0 903 51 97  010058      2620 259  258      000 900             165 370  700
                                                            ^^                               ^^^^^^^
    
  • DPT (dew-point temperature) noteworthy differences: when deck 700 DPTI (DPT indicator) = 1 - computed.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 1   0 5040 18070 0  025   1WRYW       02703 51 98277103404  0   400  25    0 1  62666 4AA   2 2281011 165 124  792
    200312 1   0 5040 18070 0 0025   1WRYW       02703 51 9827710340       400  251   4    62666 4               165 124  700
                                                                                  ^^^^^                                      
    200312 1   0 3770 20150 0  065   1WCX8884    02703 72 96636101707 36  1350 135  140      886 2AA   3 223 3 2 165 198  792
    200312 1   0 3770 20150 0 0065   1WCX8884    02703 72 9663610170      1350 1351 135      886 2               165 198  700
                                                                                  ^^^^^                                      
    200312 1   0 3230 13400 0  055   1S6TS       0 504144 97 26101204  0  1700 160  150 1 170877 521  12 7 515 7 165 191  792
    200312 1   0 3230 13400 0 0055   1S6TS       0 504144 97 2610120      1700 1601 154   170877 521             165 191  700
                                                                                  ^^^^^                                      
    200312 1 500 5090 18380 0  015   1WRYW       03003 46 98 22102407 20   500 -20 -300 1  64887 4AA   5 230 8 7 165 124  792
    200312 1 500 5090 18380 0 0015   1WRYW       03003 46 98 2210240       500 -201-290    64887 4               165 124  700
                                                                                  ^^^^^                                      
    
  • SI (SST method indicator) noteworthy differences: deck 700 SI missing when deck 792 SI = 1 - condenser inlet (intake).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 1 600 1020 32670 0  034   1WNPD       01003 98 97929101187 12  2560 244  240 1 261887 3AA   2 211 6 4 165 282  792
    200312 1 600 1020 32670 0 0034   1WNPD       01003 98 9792910118      2560 2441 239   261887 3               165 282  700
                                                                                        ^
    
  • NH (lower cloud amount) noteworthy differences: when deck 792 NH missing.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    20031213 600 4140   360 0  084   1FNCI       0 404 21 98 10102485  2  149       129 3 1530 0 A00   4 1       165 178  792
    20031213 600 4140   360 0 0084   1FNCI       0 404 21 98 1010248      149       129 3 153000  00             165 178  700
                                                                                              ^  
    
  • CL (low cloud type) noteworthy differences: deck 700 CL missing when deck 792 CL = A - low clouds not visible; or deck 792 CL = 9 - cumulonimbus ... and deck 700 CL = 8 - cumulus and stratocumulus other than ... .
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 11200  250 31690 0  032   1GLNE       01200 50 98 10101222 20  2830 232  207 3 2821 A 704   8 3       165 317  792
    200312 11200  250 31690 0 0032   1GLNE       01200 50 98 1010122      2830 232  207 3 2821   704             165 317  700
                                                                                               ^
    200312 11200  610  9130 0  065   1DQVJ       0 700 50 99 22100905  0  2750 246  235 1 299739 373   3 1     3 165 295  792
    200312 11200  610  9130 0 0065   1DQVJ       0 700 50    2210090      2750 246  235   299738 373             165 295  700
                                                                                               ^
    
  • H (cloud height) noteworthy differences: deck 700 H missing when deck 792 H = 10 - height of base of cloud not known.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 1   0 6210 28530 0  000   1VCLM       0 104 51       98901  4  -50      -123          A               165  98  792
    200312 1   0 6210 28530 0 00 0   1VCLM       0 104 51       9890      -50      -123                          165  98  700
                                                                                                 ^
    
  • CM (middle cloud type) noteworthy differences: deck 700 CM missing when deck 792 CM = A - middle clouds not visible; or deck 792 CM = 1 - altostratus ... and deck 700 CM = 5 - semi-transparent altocumulus ... .
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 2   0  100 31820 0  032   1GLNE       01000 80 98 10101124  0  2790 232  209 3 276111 5A5   8 5       165 317  792
    200312 2   0  100 31820 0 0032   1GLNE       01000 80 98 1010112      2790 232  209 3 276111 5 5             165 317  700
                                                                                                  ^    
    200312 2 600 -180   820 0  044   1FNFD       01804 51 99258101033 13  261       238 3 281773 71A      20     165 358  792
    200312 2 600 -180   820 0 0044   1FNFD       01804 51   25810103      261       238 3 281773 75              165 358  700
                                                                                                  ^
    
  • CH (high cloud type) noteworthy differences: deck 700 CH missing when deck 792 CH = A - high clouds not visible.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 1   0 4540 17240 0  025   1WCX8882    01904144 98 22103057 35   620  43   20      886 07A   3 232 5 5 165 159  792
    200312 1   0 4540 17240 0 0025   1WCX8882    01904144 98 2210305       620  431  19      886 07              165 159  700
                                                                                                   ^   
    

Figure 2. Deck 700 vosclimbufr700_test_imma.dat 12/2003 certain duplicates (DUPS 8-13) with deck 926. For each element, stacked bars of agreement (blue) vs. disagreement (red) (where missing vs. extant data counts as disagreement); and total extant deck 926 (+) and deck 700 (x). Thus any displacement between the symbol and the top of the bar represents missing data.

Examples 2. Transient matches between decks 700 vs. 926 (VOSClim BUFR vs. IMMT).
  • DS (ship course) noteworthy differences: when DS = 8 a correct deck 926 duplicate follows ; or deck 700 DS missing when deck 926 DS = 0 - stationary.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 1 600-3260 11500 0    3   1C6SU3    AU02000 40097 22101468  20 2000 1771 162 0    1110400   4 118 8 2 165 441  926
    200312 1 600-3260 11500 0 0083   1C6SU3      02003 41 98 2210146      2000 177  162      111 400             165 441  700
                                ^
    200312 1 600-3260 11500 0   83   1C6SU3    AU02003 41098 22101468  20 2000 1771 162      1110400   4 118 8 2 165 441  926
    200312 1 600-3260 11500 0 0083   1C6SU3      02003 41 98 2210146      2000 177  162      111 400             165 441  700
                                ^
    200312 2 600 2610 12210 0   00   1MHCQ7    GB0 103 93098 31101967 160 1670 1340 105 3 22688702     4 4 1 8 5 165 226  926
    200312 2 600 2610 12210 0 00 0   1MHCQ7      0 103 93 98 3110196      1670 134  105 3 226887 2               165 226  700
                                ^
    
  • VS (ship speed) noteworthy differences: no pattern.
    
    
  • D (wind direction) noteworthy differences: deck 700 D missing when deck 926 D = calm or variable.
    
    
  • WI (wind speed indicator) noteworthy differences: deck 926 WI = 0 - meter per second, estimated and deck 700 WI = 3 - knot, estimated or 4 - knot, measured.
    
    
  • W (wind speed) noteworthy differences: when WI not equal.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 21200-2630 10670 0   34   19KWH     AU01500100097 30101742  50 2000 1701 149 1 2204350336   6 41810 5 165 404  926
    200312 21200-2630 10670 0 0034   19KWH       01503103 98 3010174      2000 170  149   220435 336             165 404  700
                                                     ^^^^
    200312 21800-3730 12540 0   23   1ELXS8    AU01700 80097582         0 135     1 126 0 1508  0  0   5 318 8 6 165 442  926
    200312 21800-3730 12540 0 0023   1ELXS8      01704 77 98582           1350 130  126 0 1508     0             165 442  700
                                                     ^^^^
    
  • VV (visibility) noteworthy differences: deck 700 VV = deck 926 VV + 1.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 1   0-1860  9960 0   34   19KWH     AU01300100097 31101652 130 2250 1951 177 1 2407 50 76   8 420 9 4 165 367  926
    200312 1   0-1860  9960 0 0034   19KWH       01303 98 98 3110165      2250 195  177   2407 5  76             165 367  700
                                                          ^^
    200312 1 600  710 11350 0   22   1VJNV     AU0 200130096816100618 120 2630 2561 253 1    8 70 2    4 3 3 6 4 165 297  926
    200312 1 600  710 11350 0 0022   1VJNV       0 200130 9781610061      2630 256  253      8 7  2              165 297  700
                                                          ^^
    
  • WW (present weather) noteworthy differences: deck 700 WW missing when deck 926 WW = 0 - Cloud development not observed or not observable.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 11800 4610 17470 0   24   1MZGK7    GB02803 98096 0 100634  00  700  700  70 1  80   0                165 159  926
    200312 11800 4610 17470 0 0024   1MZGK7      02803 98 96   10063       700  70   70    80                    165 159  700
                                                            ^^                               ^^^^^^^
    
  • W1 (past weather) noteworthy differences: no pattern.
    
    
  • SLP (sea level pressure) noteworthy differences: no pattern.
    
    
  • WBTI (WBT indicator) noteworthy differences: decks alternate being missing.
    
    
  • WBT (wet-bulb temperature) noteworthy differences: deck 700 WBT = deck 926 WBT - 0.1; or decks alternate being missing.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 7   0  -70 13760 0   23   1VJNV     AU03610  0097 21100771 160 2920 2631 250 1 2816230646   0 0 1 8 2 165 335  926
    200312 7   0  -70 13760 0 0023   1VJNV       0   0  0 98 2110077      2920 262  250 0 281623 646             165 335  700
                                                                              ^^^^
    
  • DPT (dew-point temperature) noteworthy differences: no pattern.
    
    
  • SI (SST method indicator) noteworthy differences: deck 700 SI missing when deck 926 SI = 1 - condenser inlet (intake).
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 1   0 4580 16600 0   25   1MZGK7    GB01703154097 72101637 200  950  900  85 1 1008 70200   6 715 810 165 158  926
    200312 1   0 4580 16600 0 0025   1MZGK7      01703154 97 7210163       950  90   85   1008 7 200             165 158  700
                                                                                        ^
    
  • NH (lower cloud amount) noteworthy differences: when deck 926 NH = 9 - sky obscured or cloud amount cannot be estimated; or missing.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 3   0-3760 12700 0   23   1ELXS8    AU01704118098585         0 1400 1311 124 0 1518970 00   3 119 4 4 165 442  926
    200312 3   0-3760 12700 0 0023   1ELXS8      01704118 98585           1400 131  124 0 151887  00             165 442  700
                                                                                              ^ 
    200312 11800 3330 31690 0   55   1C6KD9    GB01303 82098606102026 110 2150 2050 199 0 2108 7042    4 314 4 4 165 209  926
    200312 11800 3330 31690 0 0055   1C6KD9      01303 82 9860210202      2150 205  199 0 210887 42              165 209  700
                                                                                              ^
    200312 91800 3950 32680 0   64   1MSTM6    GB02003129098 26101467 200 1880 1670 152 3 1798 503     5 427 9 7 165 210  926
    200312 91800 3950 32680 0 0064   1MSTM6      02003129 98 2610146      1880 167  152 3 179895 3               165 210  700
                                                                                              ^
    
  • CL (low cloud type) noteworthy differences: when deck 926 CL = 9 - cumulonimbus ... and deck 700 CL = 8 - cumulus and stratocumulus other than ... .
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 2   0  590  8700 0   65   1DQVJ     DE0 800100097809100803  30 2690 2501 243 1 29875904     5 2       165 294  926
    200312 2   0  590  8700 0 0065   1DQVJ       0 800100 9780910080      2690 250  243   298758 4               165 294  700
                                                                                               ^
    
  • H (cloud height) noteworthy differences: when deck 926 H missing.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 6   0-2100 11550 0   13   1V2FM     AU01700 30097   10124    0 2260 2001 185 0    3 10      5 1 0     165 405  926
    200312 6   0-2100 11550 0 0013   1V2FM       01703 31 98   10124      2260 200  185      3 1 4               165 405  700
                                                                                                 ^
    
  • CM (middle cloud type) noteworthy differences: when deck 926 CM = 1 - altostratus ... and deck 700 CM = 5 - semi-transparent altocumulus ... .
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 2 600 3090 31260 0   55   1C6KD9    GB01303 82097 32101646 260 2300 2120 202 0 2208 7041    3 314 4 4 165 209  926
    200312 2 600 3090 31260 0 0055   1C6KD9      01303 82 97 3210164      2300 212  186 0 220887 45              165 209  700
                                                                                                  ^    
    
  • CH (high cloud type) noteworthy differences: when CH = 0 and the other CH missing.
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 1 600 3570 32120 0   55   1C6KD9    GB01703 72098 11102576 220 2020 1950 191 0 2003220440   3 316 3 4 165 210  926
    200312 1 600 3570 32120 0 0055   1C6KD9      01703 72 98 1110257      2020 195  191 0 200332 44              165 210  700
                                                                                                   ^
    200312 31200-3810 13050 0   23   1ELXS8    AU01600 70097502         0 138     1 104 0 15387703     3 119 5 4 165 443  926
    200312 31200-3810 13050 0 0023   1ELXS8      01604 67 98502           1380 120  104 0 153887 300             165 443  700
                                                                                                   ^
    

Figure 3. Deck 700 vosclimbufr700_test_imma.dat 12/2003 certain duplicates (DUPS 8-13) with deck 927. For each element, stacked bars of agreement (blue) vs. disagreement (red) (where missing vs. extant data counts as disagreement); and total extant deck 927 (+) and deck 700 (x). Thus any displacement between the symbol and the top of the bar represents missing data.

Examples 3. Transient matches between decks 700 vs. 927 (VOSClim BUFR vs. keyed). Small sample all with ID = CGDS or CG2960.
  • DS (ship course) noteworthy differences: deck 700 DS missing when deck 792 DS = 0 - stationary.
  • VS (ship speed) noteworthy differences: no pattern.
  • D (wind direction) noteworthy differences: deck 700 D +/- 10 or 20 deck 927 D.
  • W (wind speed) noteworthy differences: deck 700 W +/- 5 or 10 deck 927 W; or deck 927 D = 361 - variable and W = 0.
  • SLP (sea level pressure) noteworthy differences: no pattern.
  • AT (air temperature) noteworthy differences: no pattern.
  • DPT (dew-point temperature) noteworthy differences: negative deck 927 DPT ~= negative deck 700 DPT/10; or no pattern.
  • SST (sea surface temperature) noteworthy differences: negative deck 927 SST, positive deck 700 SST; or no pattern.
                             A                                               W    D                              A A         
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 5 900 4410 28360 0 0000   1CGDS     CA0 704 62 99 00102848  70 -89      -109 3 -74000 100   0 0       165 170  927
    200312 5 900 4410 28360 0 00 0   1CGDS       0 704 62      10284      -89      -109    74                    165 170  700
                                ^                 ^^^ ^^^      ^^^^^     ^^^^      ^^^^  ^^^^
                             A                                               W    D                              A A         
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312 7 900 4840 27080 0 0000   1CG2960   CA01704 41 97 01102036 290  -60 -26   -4 7 -16557 311   0 0       165 169  927
    200312 7 900 4840 27080 0 00 0   1CG2960     01804 36      10200       -6       -43    16                    165 169  700
                                ^                 ^^^ ^^^      ^^^^^     ^^^^      ^^^^  ^^^^
                             A                                               W    D                              A A         
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    20031213 300 4530 27830 0 0000   1CG2960   CA03504 72 98 32102332  70 -680 -79  -12 3  49886 400   2 1       165 169  927
    20031213 300 4530 27830 0 00 0   1CG2960     03304 62      10235      -60      -121    49                    165 169  700
                                ^                 ^^^ ^^^      ^^^^^     ^^^^      ^^^^  ^^^^
                             A                                               W    D                              A A
                    L     L  T     N                               S   P     B   WP   D     S                    T TB  B    D
       Y M D   H    A     O ITTLDV I I        I CD   W   V V WW    L   PI   AT   BT   P S   S NCH CC W W W S S S T TS  1 B  C
       R O Y   R    T     N MCIISS D I        D 1I  DI  WI V W1    PA  PT   TI   TI   T I   TNHLIHMH D P H D P H I LI  0 1  K
    200312111800 4470 28450 0 0000   1CGDS     CA03614  0 96616 98657 220  45        44 3  55889 5AA   0 0       165 170  927
    200312111800 4470 28450 0 00 0   1CGDS       0 704  5       9866       45        44    51                    165 170  700
                                ^                 ^^^ ^^^      ^^^^^     ^^^^      ^^^^  ^^^^
    
Appendix A

Table A1. Number of extant BUFR data elements for 1 January 2011 in MetO BUFR (file ShipDay110101) and in NCEP BUFR (file sfcshp.ibm.20110101). Note: A question for the Met Office is why bulletin header fields (ID, CCCC, and BUID) were missing in BUFR file BuoyDay110101, but present in the ship data file (those fields are represented as character data in BUFR). The NCEP BUFR data we utilize for ICOADS are subject to dup-merge, which may account for some reduced counts in those data. In the column labeled "MetO_element_number - BUFR number and description," MetO_element number is "9999" for fields present only in the NCEP BUFR format. Where NCEP has chosen a different BUFR field to represent the same data element appearing in IMMA, this entry appears immediately below the Met Office field. Apparently not all the NCEP BUFR numbers are documented in the WMO Manual on Codes, and thus may be national configurations.
MetO_element_number - BUFR number and descriptionIMMA abbrev.MetO extantNCEP extant
0001 - 0 01 011 SHIP OR MOBILE LAND STATION IDENTIFIERID12297
9999 - 0 01 198 REPORT IDENTIFIERID3513
0002 - 0 05 002 LATITUDE (COARSE ACCURACY)LAT122973513
0003 - 0 06 002 LONGITUDE (COARSE ACCURACY)LON122973513
0004 - 0 04 001 YEARYR122973513
0005 - 0 04 002 MONTHMO122973513
0006 - 0 04 003 DAYDY122973513
0007 - 0 04 004 HOURHR122973513
0008 - 0 04 005 MINUTEHR122973513
0009 - 0 01 062 SHORT ICAO LOCATION INDICATORCCCC122973522
0010 - 0 35 021 BULLETIN BEING MONITORED (TTAAII)BUID122973522
0011 - 0 10 051 PRESSURE REDUCED TO MEAN SEA LEVELSLP94233273
0012 - 0 02 002 TYPE OF INSTRUMENTATION FOR WIND MEASUREMENTWI120483513
0013 - 0 11 011 WIND DIRECTION AT 10 MD9377
9999 - 0 11 001 WIND DIRECTIOND3180
0014 - 0 11 012 WIND SPEED AT 10 MW9485
9999 - 0 11 002 WIND SPEEDW3188
0015 - 0 11 003 U-COMPONENTSWU9281
0016 - 0 11 004 V-COMPONENTSWV9281
0017 - 0 12 101 TEMPERATURE/DRY-BULB TEMPERATUREAT96593219
0018 - 0 02 039 METHOD OF WET-BULB TEMPERATURE MEASUREMENTWBTI15141536
0019 - 0 12 102 WET-BULB TEMPERATUREWBT15141536
0020 - 0 12 103 DEW-POINT TEMPERATUREDPT58522809
0021 - 0 13 003 RELATIVE HUMIDITYSRH5783
0022 - 0 20 001 HORIZONTAL VISIBILITYVV24871815
0023 - 0 20 003 PRESENT WEATHER (SEE NOTE 1)WW113631474
0024 - 0 20 004 PAST WEATHER (1) (SEE NOTE 2)W114931494
0025 - 0 20 011 CLOUD AMOUNTN1599
9999 - 0 20 010 CLOUD COVER (TOTAL)N1627
0026 - 0 08 002 VERTICAL SIGNIFICANCE (SURFACE OBSERVATIONS)NH12297
0026 - 0 08 002 VERTICAL SIGNIFICANCE (SURFACE OBSERVATIONS)NH, CL, CM, CH4197
0027 - 0 20 011 CLOUD AMOUNTNH12451110
0028 - 0 20 013 HEIGHT OF BASE OF CLOUDH1738
9999 - 0 20 201 HEIGHT ABOVE SURFACE OF BASE OF LOWEST CLOUD SEENH3513
0029 - 0 08 002 VERTICAL SIGNIFICANCE (SURFACE OBSERVATIONS)CL12297
0030 - 0 20 012 CLOUD TYPECL1270
0030 - 0 20 012 CLOUD TYPECL, CM, CH4194
0031 - 0 08 002 VERTICAL SIGNIFICANCE (SURFACE OBSERVATIONS)CM12297
0032 - 0 20 012 CLOUD TYPECM930
0033 - 0 08 002 VERTICAL SIGNIFICANCE (SURFACE OBSERVATIONS)CH12297
0034 - 0 20 012 CLOUD TYPECH761
0035 - 0 01 012 DIRECTION OF MOTION OF MOVING OBSERVING PLATFORMDS10777
9999 - 0 01 193 TRUE DIRECTION OF SHIP DURING PAST 3 HOURSDS3315
0036 - 0 01 013 SPEED OF MOTION OF MOVING OBSERVING PLATFORMVS10845
9999 - 0 01 200 AVG SPD OF SHIP DURING PAST 3 HOURSVS3378
0037 - 0 02 038 METHOD OF WATER TEMPERATURE AND/OR SALINITY MEASUREMENTSI82942182
0038 - 0 22 043 SEA/WATER TEMPERATURESST84052273
0039 - 0 08 021 TIME SIGNIFICANCEBY12297
0040 - 0 04 001 YEARBY12219
0041 - 0 04 002 MONTHBM12219
0042 - 0 04 003 DAYBD12219
0043 - 0 04 004 HOURBH12219
0044 - 0 04 025 TIME PERIOD OR DISPLACEMENTBFL
0045 - 0 08 204 SURFACE TYPE INDICATORMST12219
0046 - 0 10 007 HEIGHTMSH12219
0047 - 0 10 051 PRESSURE REDUCED TO MEAN SEA LEVELBMP12219
0048 - 0 11 003 U-COMPONENTBSWU12219
0049 - 0 11 004 V-COMPONENTBSWV12219
0050 - 0 12 101 TEMPERATURE/DRY-BULB TEMPERATUREBSAT12219
0051 - 0 13 003 RELATIVE HUMIDITYBSRH12219
0052 - 0 22 043 SEA/WATER TEMPERATUREBSST8361
9999 - 0 01 203 SHIP CALL SIGN (8 CHARACTERS)3513
9999 - 0 02 001 TYPE OF STATION3512
9999 - 0 02 193 IND TYPE OF STATION OPERATION PAST/PRESENT WEATHERIX3512
9999 - 0 04 200 YEAR - TIME OF RECEIPT3522
9999 - 0 04 201 MONTH - TIME OF RECEIPT3522
9999 - 0 04 202 DAY - TIME OF RECEIPT3522
9999 - 0 04 203 HOUR - TIME OF RECEIPT3522
9999 - 0 04 204 MINUTE - TIME OF RECEIPT3522
9999 - 0 07 001 HEIGHT OF STATION3513
9999 - 0 08 202 RECEIPT TIME SIGNIFICANCE3522
9999 - 0 10 004 PRESSURE143
9999 - 0 10 061 3 HOUR PRESSURE CHANGEPPP2722
9999 - 0 10 063 CHARACTERISTIC OF PRESSURE TENDENCYA2866
9999 - 0 11 041 MAXIMUM WIND SPEED (GUSTS)24
9999 - 0 12 111 MAXIMUM TEMPERATURE1
9999 - 0 13 021 TOTAL PRECIPITATION PAST 6 HOURSRRR, TR3
9999 - 0 13 194 INDIC INCLUSION/OMISSION OF PRECIR3511
9999 - 0 20 005 PAST WEATHER (2)W21490
9999 - 0 20 031 ICE DEPOSIT (THICKNESS)ES23
9999 - 0 20 032 RATE OF ICE ACCRETIONRS12
9999 - 0 20 033 CAUSE OF ICE ACCRETIONIS18
9999 - 0 22 003 DIRECTION OF SWELL WAVESSD, SD21182
9999 - 0 22 011 PERIOD OF WAVESWP291
9999 - 0 22 012 PERIOD OF WIND WAVESWP1233
9999 - 0 22 013 PERIOD OF SWELL WAVESSP, SP21134
9999 - 0 22 021 HEIGHT OF WAVESWH299
9999 - 0 22 022 HEIGHT OF WIND WAVESWH1329
9999 - 0 22 023 HEIGHT OF SWELL WAVESSH, SH21154
9999 - 0 33 193 SDMEDIT/QUIPS QUALITY MARK FOR TEMPERATURE4
9999 - 0 33 195 SDMEDIT/QUIPS QUALITY MARK FOR WIND40
9999 - 0 33 207 SDMEDIT/QUIPS QUALITY MARK FOR PRESSURE34
9999 - 0 33 215 CORRECTED REPORT INDICATOR3513
9999 - 0 33 218 SDMEDIT/QUIPS QUALITY MARK FOR SEA SURFACE TEMPERATURE11
9999 - 0 35 022 BULLETIN BEING MONITORED (YYGGgg)3522
9999 - 0 35 194 BULLETIN BEING MONITORED (BBB)3522
9999 - 0 35 195 CHANNEL SEQUENCE NUMBER3522
9999 - 0 58 008 RAW REPORT STRINGSUPD43523

[Documentation and Software][Links to additional]


U.S. National Oceanic and Atmospheric Administration hosts the icoads website privacy disclaimer
Document maintained by icoads@noaa.gov
Updated: May 21, 2012 17:02:13 UTC
http://icoads.noaa.gov/deck700.html