Table 8.a   Reason codes associated with step "PREPRO", program code 001 (last revised 9/25/2008).

NOTE 1:
FOR ALL DATA TYPES EXCEPT TOVS AND GOES RETRIEVALS, THE ENCODED QUALITY MARKER FOR SPECIFIC HUMIDITY (QQM) IS SET TO THE ENCODED QUALITY MARKER FOR TEMPERATURE (TQM). THEREFORE, ANY EVENTS ON TQM FOR THESE DATA TYPES ARE ALSO EVENTS ON QQM. THE EVENTS ON QQM LISTED HERE ARE SEPARATE FROM THOSE ON TQM.

NOTE 2:
FOR ALL DATA TYPES, THE ENCODED QUALITY MARKER FOR WIND U- AND V-COMPONENTS (WQM) IS ALSO THE ENCODED QUALITY MARKER FOR WIND SPEED AND DIRECTION (DFQ) AND FOR WIND SPEED (SQM). IN ADDITION, ALL ENCODED EVENTS FOR THE UOB,VOB,WQM SEQUENCE ALSO APPLY TO THE DDO,FFO,DFQ SEQUENCE.

 

KEY:
IN "R.CODE" COLUMN:
                                      B - OCCURS IN ALL OPERATIONAL VERSIONS OF PREPRO.
                                      N - CURRENTLY DOES NOT OCCUR IN ANY OPERATIONAL VERSION OF PREPRO.

     IN "MNEMONIC" COLUMN:
                                     ## - QUALITY MARKER IS USUALLY DEFINED AS THE WORSE OF THE TWO SPANNING LEVEL QUALITY MARKERS FOR THE DATA USED TO CREATE THE OBSERVATION (OF THE SAME DATA TYPE).
                                    @@ - QUALITY MARKER IS USUALLY DEFINED AS THE WORSE OF THE PAIR OF HEIGHT AND TEMPERATURE QUALITY MARKERS ON THE TWO SPANNING LEVELS FOR THE DATA USED TO CREATE THE OBSERVATION.
                                     ** - OBSERVATION OR QUALITY MARKER IS OBTAINED AS DEFINED IN EVENT MEANING.


 

R.CODE MEANING MNEMONICS AFFECTED AND NEW VALUE FOR OBS, Q.M.
100 B OBSERVATION AND QUALITY MARKER ON REPORT LEVEL UNCHANGED FROM ORIGINAL VALUES READ INTO PROGRAM PREPDATA.
EVENTS # 101-129 PERTAIN TO DATA OBSERVATIONS AND QUALITY MARKERS THAT ARE GENERATED BY PREPRO. DATA OBSERVATIONS WERE MISSING PRIOR TO PREPRO.
101 N OBSERVATION ON UPPER-AIR CATEGORY 4 (WINDS-BY-HEIGHT) LEVEL CREATED VIA LINEAR AVERAGING OF REPORTED DATA ON SPANNING LEVELS. PRC-> POB= **,PQM= ##
ZRC-> ZOB= **,ZQM= ##
TRC-> TOB= **,TQM= ##
102 N OBSERVATION ON UPPER-AIR REPORT LEVEL CREATED VIA LINEAR LOG-P INTERPOLATION OF REPORTED DATA ON SPANNING LEVELS. TRC-> TOB= **,TQM= ##
WRC-> UOB,VOB= **,WQM= ##
103 B(PRC)
       N(ZRC,TRC)
OBSERVATION ON UPPER-AIR REPORT LEVEL CREATED VIA HYDROSTATIC INTEGRATION OF REPORTED DATA ON SPANNING LEVELS. {PRC AFFECTED ONLY FOR CATEGORY 4 (WINDS-BY-HEIGHT) LEVELS.} PRC-> POB= **,PQM= ##
ZRC-> ZOB= **,ZQM= @@
TRC-> TOB= **,TQM= ##
105 N NEW REPORT PRESSURE LEVEL CREATED. PRESSURE OBSERVATION CONSIDERED TO BE OF NEUTRAL QUALITY. {FOR SSM/I WIND SPEED AND ERS AND QUIKSCAT SCATTEROMETER WIND REPORTS, PRESSURE OBSERVATION IS ASSIGNED THE VALUE OF 1013 MB (LOGIC IS CURRENTLY NOT IN PLACE TO ASSIGN REASON CODE FOR THIS EVENT). OTHERWISE, PRESSURE OBSERVATION IS ASSIGNED TO THE SPECIAL "CATEGORY 7" 25 OR 50 MB PRESSURE LEVELS ONTO WHICH OBSERVATIONS ARE INTERPOLATED FOR UPPER-AIR REPORTS (REGIONAL VERSION ONLY).} PRC-> POB= **,PQM= 2
116 B PRESSURE CALCULATED FROM REPORTED ALTITUDE VIA U.S. STANDARD ATMOSPHERE. CATEGORY 6 (SINGLE-LEVEL AIRCRAFT/ SATWND/ RECCO) LEVEL OR CATEGORY 4 (WINDS-BY-HEIGHT) UPPER-AIR LEVEL FOR REPORT WITH NO VALID HEIGHT LEVELS. 

CALCULATED PRESSURE OBSERVATION IS CONSIDERED TO BE OF NEUTRAL QUALITY.

PRC-> POB= **,PQM= 2

Most PREPRO "events" are not yet assigned a reason code, so it is missing. In this case the observation and/or quality marker may or may not be the original value. (This will change in the future as events and their reason codes are added to the PREPRO step.)
 


Table 8.b   Possible future reason codes associated with events currently occurring in step "PREPRO", program code 001 (last revised 9/25/2008).

NOTE 1:
FOR ALL DATA TYPES EXCEPT TOVS AND GOES RETRIEVALS, THE ENCODED QUALITY MARKER FOR SPECIFIC HUMIDITY (QQM) IS SET TO THE ENCODED QUALITY MARKER FOR TEMPERATURE (TQM). THEREFORE, ANY EVENTS ON TQM FOR THESE DATA TYPES ARE ALSO EVENTS ON QQM. THE EVENTS ON QQM LISTED HERE ARE SEPARATE FROM THOSE ON TQM.

NOTE 2:
FOR ALL DATA TYPES, THE ENCODED QUALITY MARKER FOR WIND U- AND V-COMPONENTS (WQM) IS ALSO THE ENCODED QUALITY MARKER FOR WIND SPEED AND DIRECTION (DFQ) AND FOR WIND SPEED (SQM). IN ADDITION, ALL ENCODED EVENTS FOR THE UOB,VOB,WQM SEQUENCE ALSO APPLY TO THE DDO,FFO,DFQ SEQUENCE.

NOTE 3:
ONLY SURFACE LAND AND GREAT LAKES MARINE REPORTS CAN ENCODE MEAN SEA- LEVEL PRESSURE (PMO, PMQ, PMR) DATA. ALL REPORT TYPES ENCODE SURFACE PRESSURE (POB, PQM, PRC) DATA. 

 

KEY:
IN "EVENT" COLUMN:
                                   G - OCCURS IN GFS/GDAS VERSION OF PREPRO.
                                   E - OCCURS IN NAM/NDAS VERSION OF PREPRO.
                                   R - OCCURS IN RUC VERSION OF PREPRO.
                                   C - OCCURS IN CDAS VERSION OF PREPRO.
                                   B - OCCURS IN ALL OPERATIONAL VERSIONS OF PREPRO.
                                   N - CURRENTLY DOES NOT OCCUR IN ANY OPERATIONAL VERSION OF PREPRO.

IN "MNEMONIC" COLUMN:
                                   ## - QUALITY MARKER IS USUALLY DEFINED AS THE WORSE OF THE TWO SPANNING LEVEL QUALITY MARKERS FOR THE DATA USED TO CREATE THE OBSERVATION (OF THE SAME DATA TYPE).
                                   @@ - QUALITY MARKER IS USUALLY DEFINED AS THE WORSE OF THE PAIR OF HEIGHT AND TEMPERATURE QUALITY MARKERS ON THE TWO SPANNING LEVELS FOR THE DATA USED TO CREATE THE OBSERVATION.
                                    ** - OBSERVATION OR QUALITY MARKER IS OBTAINED AS DEFINED IN EVENT MEANING.
                                    && - QUALITY MARKER IS BASED ON QUALITY OF SOUNDING DATA USED TO CREATE DATA. 

IN "MEANING" COLUMN:
                                    @ - LIMIT IS 150 MB BELOW 700 MB, 200 MB BETWEEN 700 AND 601 MB, 100 MB BETWEEN 600 AND 251 MB, AND 50 MB AT AND ABOVE 250 MB. THE REFERENCE PRESSURE  HERE IS THAT ON THE BOTTOM SPANNING LEVEL.
                                     # - LIMIT (IN METERS) IS DEFINED AS 30.0 - (PR/50.0) , WHERE PR IS THE PRESSURE (MB) ON THE NEXT LEVEL ABOVE WITH A VALID REPORTED HEIGHT.
                                     $ - D-VALUE IS DEFINED AS THE DIFFERENCE BETWEEN A  REPORTED SURFACE (OR MEAN SEA-LEVEL) PRESSURE AND THE U.S. STANDARD ATMOSPHERE PRESSURE AT THE HEIGHT OF THE REPORTED ELEVATION. THIS RANGE IS -75 TO +50 MB FOR ALL TYPES EXCEPT SPLASH-LEVEL DROPWINSONDE AND RECONNAISSANCE WITH ESTIMATED MEAN SEA-LEVEL PRESSURE (OI/SSI REPORT TYPE 182) WHERE THE RANGE IS -215 TO +50 MB TO ALLOW FOR HURRICANE PRESSURES.
                                     % - THE BASELINE CHECK IS ACCOMPLISHED BY COMPUTING THE STATION HEIGHT (ELEVATION) BASED ON THE HEIGHTS OF THE TWO MANDATORY PRESSURE LEVELS THAT SPAN THE SURFACE PRESSURE LEVEL (IF THE SURFACE PRESSURE IS GREATER THAN 1000 MB, THEN USES 1000 MB AND THE  NEXT MANDATORY LEVEL ABOVE, EITHER 925 OR 850 MB) AND THE REPORTED SURFACE PRESSURE VALUE FOR A NON-SATELLITE UPPER-AIR REPORT. ASSUMES A CONSTANT LAPSE RATE OF -6.5 DEG. C/KM. IF THE DIFFERENCE BETWEEN THIS COMPUTED STATION HEIGHT AND THE REPORTED STATION HEIGHT (ELEVATION) IS GREATER THAN OR EQUAL TO 20 METERS THEN THE REPORT HAS FAILED THE BASELINE CHECK.
 
 
R.CODE MEANING MNEMONICS AFFECTED AND NEW VALUE FOR OBS, Q.M.
EVENTS # 101-129 PERTAIN TO DATA OBSERVATIONS AND QUALITY MARKERS THAT ARE GENERATED BY PREPRO. DATA OBSERVATIONS WERE MISSING PRIOR TO PREPRO.
104 B OBSERVATION ON REPORT LEVEL CREATED FROM OTHER TYPES OF REPORTED OBSERVATIONS ON THE SAME LEVEL. QQM EQUALS TQM FOR ALL REPORT TYPES EXCEPT GOES RETRIEVALS. QRC-> QOB= **,QQM= **
106 B SURFACE MARINE REPORT WITH A MISSING REPORTED ELEVATION (OR A REPORTED ELEVATION GREATER THAN 10,000 METERS). HEIGHT (ELEVATION) OBSERVATION IS ASSIGNED THE VALUE OF ZERO METERS. HEIGHT OBSERVATION IS CONSIDERED TO BE OF NEUTRAL QUALITY. ZRC-> ZOB= 0,ZQM= 2
107 B SURFACE LAND REPORT WITH MISSING MEAN SEA-LEVEL PRESSURE AND ELEVATION GREATER THAN 0 BUT LESS THAN 7.5 METERS. MEAN SEA-LEVEL PRESSURE OBSERVATION SET TO REPORTED SURFACE PRESSURE OBSERVATION VALUE IF VALID. MEAN SEA-LEVEL PRESSURE OBSERVATION QUALITY IS SET TO THAT OF SURFACE PRESSURE OBSERVATION IF IT IS SUSPECT OR BAD, OTHERWISE IT IS CONSIDERED TO BE OF NEUTRAL QUALITY. PMR-> PMO= POB,PMQ= **
108 B SURFACE MARINE ATLAS BUOY REPORT. REPORTED SURFACE PRESSURE IS MISSING. SURFACE PRESSURE OBSERVATION IS ASSIGNED THE U.S. STANDARD ATMOSPHERE VALUE OF 1013 MB. SURFACE PRESSURE OBSERVATION IS CONSIDERED TO BE OF SUSPECT QUALITY. PRC-> POB=1013,PQM= 3
109 B SURFACE LAND REPORT WITH MISSING SURFACE PRESSURE, MISSING ALTIMETER SETTING AND ELEVATION GREATER THAN 0 BUT LESS THAN 7.5 METERS. SURFACE PRESSURE OBSERVATION SET TO REPORTED MEAN-SEA LEVEL PRESSURE OBSERVATION VALUE IF VALID. SURFACE PRESSURE OBSERVATION QUALITY IS SET TO THAT OF MEAN SEA-LEVEL PRESSURE OBSERVATION IF IT IS SUSPECT OR BAD, OTHERWISE IT IS CONSIDERED TO BE OF NEUTRAL QUALITY. PRC-> POB= PMO,PQM= **
110 B SURFACE REPORT WITH MISSING SURFACE PRESSURE, MISSING ALTIMETER SETTING AND ELEVATION GREATER THAN 0 BUT LESS THAN 7.5 METERS. SURFACE PRESSURE OBSERVATION SET TO REPORTED MEAN SEA-LEVEL PRESSURE OBSERVATION VALUE IF VALID. SURFACE PRESSURE OBSERVATION IS CONSIDERED TO BE OF BAD QUALITY BECAUSE MEAN SEA-LEVEL PRESSURE IS OUTSIDE D-VALUE RANGE (SEE $). PRC-> POB= PMO,PQM= 15
111 B SURFACE MARINE REPORT WITH MISSING SURFACE PRESSURE, MISSING ALTIMETER SETTING AND ELEVATION GREATER THAN 0 BUT LESS THAN 7.5 METERS. SURFACE PRESSURE OBSERVATION SET TO REPORTED MEAN-SEA LEVEL PRESSURE OBSERVATION VALUE IF VALID. SURFACE PRESSURE OBSERVATION QUALITY IS SET TO THAT OF MEAN SEA-LEVEL PRESSURE OBSERVATION.  PRC-> POB= PMO,PQM= PMQ
112 B SURFACE LAND OR GREAT LAKES MARINE REPORT WITH MISSING SURFACE PRESSURE, MISSING ALTIMETER SETTING, ELEVATION GREATER THAN 7.5 METERS, AND VALID MEAN SEA-LEVEL PRESSURE. SURFACE PRESSURE OBSERVATION IS CALCULATED FROM MEAN SEA-LEVEL PRESSURE, REPORTED TEMPERATURE AND ELEVATION. SURFACE PRESSURE OBSERVATION IS CONSIDERED TO BE OF SUSPECT QUALITY UNLESS MEAN SEA-LEVEL PRESSURE QUALITY IS BAD. IN THIS CASE SURFACE PRESSURE OBSERVATION IS CONSIDERED TO BE OF BAD QUALITY. PRC-> POB= **,PQM= **
113 B SURFACE REPORT WITH MISSING SURFACE PRESSURE, MISSING ALTIMETER SETTING, ELEVATION GREATER THAN 7.5 METERS, AND VALID MEAN SEA-LEVEL PRESSURE. SURFACE PRESSURE OBSERVATION IS CALCULATED FROM MEAN SEA-LEVEL PRESSURE, REPORTED TEMPERATURE AND ELEVATION. SURFACE PRESSURE OBSERVATION IS CONSIDERED TO BE OF BAD QUALITY BECAUSE REPORTED MEAN SEA-LEVEL PRESSURE IS OUTSIDE D-VALUE RANGE (SEE $). PRC-> POB= **,PQM= 15
114 N OBSERVATION ON REPORT LEVEL CREATED FROM OTHER TYPES OF OBSERVATIONS ON THE SAME LEVEL. THE OTHER OBSERVATIONS WERE EARLIER CREATED VIA LINEAR LOG-P INTERPOLATION OF REPORTED DATA ON SPANNING LEVELS. QRC-> QOB= **,QQM= ##
115 B SAME AS # 111 EXCEPT MEAN SEA-LEVEL PRESSURE CONTAINS AN SDM EVENT. PRC-> POB= PMO,PQM= PMQ
117 B FLIGHT-LEVEL RECONNAISSANCE REPORT WITH PRESSURE ON CATEGORY 6 (FLIGHT-LEVEL) LEVEL CALCULATED FROM REPORTED ALTITUDE AND TEMPERATURE ON THIS LEVEL AND FROM REPORTED PRESSURE AND HEIGHT ON A SECOND LEVEL (VIA U.S. STANDARD ATMOSPHERE LAPSE RATE). SECOND LEVEL IS EITHER A NEARBY MANDATORY LEVEL OR THE NEARBY SEA-LEVEL FOR LOW-LEVEL FLIGHTS. CALCULATED CATEGORY 6 PRESSURE OBSERVATION IS CONSIDERED TO BE OF NEUTRAL QUALITY. PRC-> POB = **,PQM= 2
118 B SAME AS # 107 EXCEPT SURFACE PRESSURE CONTAINS AN SDM EVENT. PMR-> PMO= POB,PMQ= **
119 B SAME AS # 109 EXCEPT MEAN SEA-LEVEL PRESSURE CONTAINS AN SDM EVENT. PRC-> POB= PMO,PQM= **
120 B SAME AS # 112 EXCEPT MEAN SEA-LEVEL PRESSURE CONTAINS AN SDM EVENT.  PRC-> POB= **,PQM= **
121 N SAME AS # 112 EXCEPT MEAN SEA-LEVEL PRESSURE IS ALSO MISSING. SURFACE PRESSURE OBSERVATION IS CALCULATED FROM U.S. STANDARD ATMOSPHERE MEAN SEA-LEVEL PRESSURE (1013.3 MB), REPORTED TEMPERATURE AND ELEVATION. SURFACE PRESSURE OBSERVATION IS CONSIDERED TO BE OF SUSPECT QUALITY. PRC-> POB= **,PQM= 3
122-129 RESERVED FOR FUTURE USE
EVENTS # 130-190 PERTAIN TO DATA QUALITY MARKERS AND/OR OBSERVATIONS THAT ARE CHANGED BY PREPRO. THE DATA OBSERVATIONS WERE NOT MISSING PRIOR TO PREPRO.
130 B REPORT WITH A REPORTED PRESSURE OBSERVATION THAT IS GREATER THAN 1075 MB. PRESSURE OBSERVATION IS CONSIDERED TO BE OF BAD QUALITY. PRC-> PQM= 15
131 B UPPER-AIR REPORT CATEGORY 4 (WINDS-BY-HEIGHT) LEVEL WITH A CALCULATED HEIGHT CREATED FROM A SPANNING LEVEL THAT DID NOT REPORT HEIGHT. (THE U.S. STANDARD ATMOSPHERE HEIGHT WAS TEMPORARILY STORED FOR THIS SPANNING LEVEL.) CALCULATED HEIGHT OBSERVATION IS CONSIDERED TO BE OF BAD QUALITY. ZRC-> ZQM= 15
132 B REPORT WITH A REPORTED SURFACE OR MEAN SEA-LEVEL (FOR SURFACE LAND REPORTS) PRESSURE OBSERVATION THAT IS OUTSIDE THE D-VALUE RANGE (SEE $). THE OBSERVATION IS CONSIDERED TO BE OF BAD QUALITY. PRC-> PQM= 15
PMR-> PMQ= 15
133 B UPPER-AIR REPORT. ALL OBSERVATIONS ON A CATEGORY 4 (WINDS-BY-HEIGHT) LEVEL THAT WERE CREATED FROM DATA ON A SPANNING LEVEL WITH A PRESSURE OF BAD QUALITY ARE THEMSELVES CONSIDERED TO BE OF BAD QUALITY. PRC-> PQM= 15
ZRC-> ZQM= 15
TRC-> TQM= 15
WRC-> WQM= 15
134 B UPPER-AIR REPORT. HEIGHT OBSERVATION ON A CATEGORY 4 (WINDS-BY-HEIGHT) LEVEL IS CONSIDERED TO BE OF SUSPECT QUALITY. ZRC-> ZQM= 3
135 B UPPER-AIR REPORT. WIND OBSERVATION ON A CATEGORY 4 (WINDS-BY-HEIGHT) LEVEL ORIGINALLY HAVING A KEEP FLAG OR A GOOD QUALITY MARKER IS DOWNGRADED TO BE OF NEUTRAL QUALITY. WRC-> WQM= 2
136-137 RESERVED FOR FUTURE USE
138 B REPORT THAT IS OVER LAND AND DATA CARD SWITCHES ARE SET TO EXCLUDE ALL DATA OF THIS TYPE OVER LAND. OBSERVATION IS FLAGGED FOR NON-USE BY ANALYSIS. (PMR AFFECTED ONLY FOR SURFACE MARINE REPORTS.)  PRC-> PQM= 15
ZRC-> ZQM= 15
TRC-> TQM= 15
QRC-> QQM= 15
WRC-> WQM= 15
PMR-> PMQ= 15
139 E,R
       N
GOES SATELLITE RETRIEVAL WITH SATELLITE NUMBER/RETRIEVAL TYPE COMBINATION THAT IS SET TO BE EXCLUDED BY DATA CARD SWITCHES. OBSERVATION IS FLAGGED FOR NON-USE BY ANALYSIS. {PWR IS VALID FOR NAM/NDAS AND RUC, OTHER TYPES ARE NOT VALID FOR ANY OPERATIONAL VERSION.} PWR-> PWQ= 15
PRC-> PQM= 15
ZRC-> ZQM= 15
TRC-> TQM= 15
QRC-> QQM= 15
140 N UPPER-AIR REPORT FROM AN INDIAN RADIOSONDE (WMO BLOCK 42 OR 43) AND DATA CARD SWITCHES ARE SET TO EXCLUDE ALL DATA. OBSERVATION IS FLAGGED FOR NON-USE BY ANALYSIS. PRC-> PQM= 15
ZRC-> ZQM= 15
TRC-> TQM= 15
QRC-> QQM= 15
PWR-> PWQ= 15
141 B SURFACE LEVEL DATA FOR AN UPPER-AIR RECONNAISSANCE OR DROPWINSONDE REPORT. OBSERVATION IS FLAGGED FOR NON-USE BY ANALYSIS. (SURFACE LEVEL DATA ARE PROCESSED AS UNIQUE OI/SSI REPORT TYPE 182.)  PRC-> PQM= 15
ZRC-> ZQM= 15
TRC-> TQM= 15
QRC-> QQM= 15
142 N SURFACE LEVEL DATA FOR A GOES SOUNDING. OBSERVATION IS CONSIDERED TO BE OF SUSPECT QUALITY. ZRC-> ZQM= 3
TRC-> TQM= 3
QRC-> QQM= 3
143 B UPPER-AIR REPORT LEVEL WITH REPORTED PRESSURE GREATER THAN REPORTED SURFACE PRESSURE. OBSERVATION IS CONSIDERED TO BE OF BAD QUALITY. PRC-> PQM= 15
TRC-> TQM= 15
WRC-> WQM= 15
144-145 RESERVED FOR FUTURE USE
146 C PAOBS MEAN SEA-LEVEL PRESSURE BOGUS REPORT. PRESSURE OBSERVATION IS CONSIDERED TO BE OF GOOD QUALITY. PRC-> PQM= 1
147 B UPPER-AIR REPORT LEVEL WITH EITHER: 1) PRESSURE BELOW 400 MB AND EITHER MISSING DEWPOINT OR DEWPOINT BELOW 215 K; OR 2) PRESSURE ABOVE HIGHEST CATEGORY 2 SIGNIFICANT-TEMPERATURE) OR CATEGORY 5 (TROPOSPHERE) LEVEL WITH HEIGHT OR TEMPERATURE DATA. TEMPERATURE OBSERVATION ORIGINALLY HAVING A KEEP FLAG OR A GOOD QUALITY MARKER IS DOWNGRADED TO BE OF NEUTRAL QUALITY. TRC-> TQM= 2
148 B UPPER-AIR REPORT LEVEL WITH CALCULATED VIRTUAL TEMPERATURE GREATER THAN 375K BELOW 100 MB OR GREATER THAN 325K ABOVE 100 MB. IF SIGNIFICANT LEVEL HEIGHTS ARE GENERATED, SENSIBLE TEMPERATURE IS USED. TEMPERATURE OBSERVATION IS CONSIDERED TO BE OF BAD QUALITY. TRC-> TQM= 15
149 N UPPER-AIR REPORT LEVEL WHERE THE DIFFERENCE BETWEEN THE PRESSURE ON THE FIRST LEVEL BENEATH WITH EITHER A REPORTED OR CALCULATED HEIGHT AND THE PRESSURE ON THIS CATEGORY 2 (SIGNIFICANT-TEMPERATURE) {OR CATEGORY 1 (MANDATORY), IF HEIGHT MISSING} LEVEL ONTO WHICH A HEIGHT IS BEING CALCULATED VIA HYDROSTATIC INTEGRATION EXCEEDS THE LIMIT (SEE @). CALCULATED HEIGHT OBSERVATION IS CONSIDERED TO BE OF BAD QUALITY. ZRC-> ZQM= 15
150 B SURFACE REPORT WITH REPORTED MEAN SEA-LEVEL PRESSURE THAT IS OF BAD QUALITY. SURFACE PRESSURE OBSERVATION THAT ORIGINALLY WAS NON-BAD IS THEN ALSO CONSIDERED TO BE OF BAD QUALITY. PRC-> PQM= 15
151 N UPPER-AIR REPORT LEVEL WHERE THE DIFFERENCE BETWEEN THE REPORTED HEIGHT AND THE CALCULATED HEIGHT (VIA HYDROSTATIC INTEGRATION) ON THE FIRST LEVEL ABOVE WITH A REPORTED HEIGHT EXCEEDS THE LIMIT (SEE #). THE HEIGHT OBSERVATION CALCULATED VIA HYDROSTATIC INTEGRATION ON THIS CATEGORY 2 (SIGNIFICANT-TEMPERATURE) OR CATEGORY 5 (TROPOSPHERE) {OR CATEGORY 1 (MANDATORY), IF HEIGHT MISSING} LEVEL IS CONSIDERED TO BE OF BAD QUALITY. ZRC-> ZQM= 15
152 B SURFACE LAND REPORT WITH REPORTED SURFACE PRESSURE THAT IS OF BAD QUALITY. REPORTED MEAN-SEA LEVEL PRESSURE OBSERVATION THAT ORIGINALLY WAS NON-BAD IS THEN ALSO CONSIDERED TO BE OF BAD QUALITY.  PMR-> PMQ= 15
153 RESERVED FOR FUTURE USE
154 B UPPER-AIR REPORT LEVEL THAT IS A DUPLICATE IN PRESSURE WITH ANOTHER LEVEL. IF WIND OBSERVATION IS TRANSFERRED FROM A CATEGORY 4 (WINDS-BY-HEIGHT) LEVEL ONTO A DUPLICATE LEVEL WITH MISSING OR BAD HEIGHT, THEN ITS QUALITY IS DOWNGRADED TO BE NEUTRAL IF IT ORIGINALLY HAD A KEEP FLAG OR WAS OF GOOD QUALITY. WRC-> WQM= 2
155 B SURFACE REPORT WITH REPORTED MEAN SEA-LEVEL PRESSURE THAT IS OUTSIDE D-VALUE RANGE (SEE $). SURFACE PRESSURE OBSERVATION THAT ORIGINALLY WAS NON-BAD IS THEN ALSO CONSIDERED TO BE OF BAD QUALITY. PRC-> PQM= 15
156 B SURFACE REPORT WITH REPORTED SURFACE PRESSURE THAT IS OUTSIDE D-VALUE RANGE (SEE $). MEAN-SEA LEVEL PRESSURE OBSERVATION THAT ORIGINALLY WAS NON-BAD IS THEN ALSO CONSIDERED TO BE OF BAD QUALITY. PMR-> PMQ= 15
157 B SURFACE LAND REPORT IS OUTSIDE THE BOUNDARY OF THE LFM GRID DOMAIN. DATA CARD SWITCHES ARE SET TO EXCLUDE ALL WIND DATA, AND ALL MASS DATA WHERE THE SURFACE PRESSURE HAS BEEN CALCULATED FROM THE REPORTED MEAN SEA-LEVEL PRESSURE, TEMPERATURE, AND ELEVATION. OBSERVATION IS FLAGGED FOR NON-USE BY ANALYSIS. PRC-> PQM= 15
ZRC-> ZQM= 15
TRC-> TQM= 15
QRC-> QQM= 15
WRC-> WQM= 15
PMR-> PMQ= 15
158  RESERVED FOR FUTURE USE
159 C ACARS REPORT WITH PRESSURE ALTITUDE LESS THAN 7500 FEET. DATA CARD SWITCHES ARE SET TO EXCLUDE ALL DATA. OBSERVATION IS FLAGGED FOR NON-USE BY ANALYSIS. PRC-> PQM= 15
ZRC-> ZQM= 15
TRC-> TQM= 15
QRC-> QQM= 15
WRC-> WQM= 15
160 N SATELLITE LAND OR GREAT LAKES MARINE REPORT WITH MISSING SURFACE PRESSURE, MISSING ALTIMETER SETTING, MISSING MEAN SEA-LEVEL PRESSURE AND ELEVATION GREATER THAN 7.5 METERS. SPECIFIC HUMIDITY OBSERVATION IS CALCULATED FROM AN ESTIMATED SURFACE PRESSURE (BASED ON U.S. STANDARD ATMOSPHERE). SPECIFIC HUMIDITY OBSERVATION IS CONSIDERED TO BE OF SUSPECT QUALITY. QRC-> QQM= 3
161 RESERVED FOR FUTURE USE
162 B FLIGHT-LEVEL RECONNAISSANCE REPORT WITH PRESSURE ON CATEGORY 6 (FLIGHT-LEVEL) LEVEL CALCULATED FROM REPORTED ALTITUDE ON THIS LEVEL (VIA U.S. STANDARD ATMOSPHERE). PRESSURE AND HEIGHT ARE REPORTED ON A SECOND LEVEL (EITHER NEARBY MANDATORY LEVEL OR SEA-LEVEL), BUT HEIGHT OBSERVATION IS OF BAD QUALITY. CALCULATED CATEGORY 6 PRESSURE OBSERVATION IS CONSIDERED TO BE OF SUSPECT QUALITY. PRC-> PQM= 3
163 B PRESSURE CALCULATED FROM REPORTED ALTITUDE VIA U.S. STANDARD ATMOSPHERE. CATEGORY 6 (SINGLE-LEVEL AIRCRAFT/ SATWND) LEVEL. REPORTED HEIGHT CONTAINS AN SDM EVENT. CALCULATED PRESSURE OBSERVATION IS CONSIDERED TO HAVE THE SAME QUALITY AS THAT OF THE HEIGHT (ALTITUDE) OBSERVATION. PRC-> PQM= ZQM
164 N UPPER-AIR REPORT LEVEL ONTO WHICH A HEIGHT IS BEING CALCULATED VIA HYDROSTATIC INTEGRATION. ONE OR BOTH OF THE SPANNING LEVEL HEIGHTS HAS AN EVENT OF 149 OR 165. CALCULATED HEIGHT OBSERVATION IS CONSIDERED TO BE OF BAD QUALITY. ZRC-> ZQM= 15
165 N UPPER-AIR REPORT LEVEL WHERE THE DIFFERENCE BETWEEN THE PRESSURE ON THE FIRST LEVEL BENEATH WITH EITHER A REPORTED OR CALCULATED HEIGHT AND THE PRESSURE ON THE FIRST LEVEL ABOVE WITH A REPORTED HEIGHT EXCEEDS THE LIMIT (SEE @). THE HEIGHT OBSERVATION CALCULATED VIA HYDROSTATIC INTEGRATION ON THIS CATEGORY 2 (SIGNIFICANT-TEMPERATURE) OR CATEGORY 5 (TROPOSPHERE) {OR CATEGORY 1 MANDATORY), IF HEIGHT MISSING} LEVEL IS CONSIDERED TO BE OF BAD QUALITY. ZRC-> ZQM= 15
166 N UPPER-AIR REPORT LEVEL ONTO WHICH A HEIGHT IS BEING CALCULATED VIA HYDROSTATIC INTEGRATION. ONE OR BOTH OF THE SPANNING LEVEL HEIGHTS HAS AN EVENT OF 195 OR 197. CALCULATED HEIGHT OBSERVATION IS CONSIDERED TO BE OF BAD QUALITY. ZRC-> ZQM= 15
167 N UPPER-AIR REPORT LEVEL ONTO WHICH A HEIGHT IS BEING CALCULATED VIA HYDROSTATIC INTEGRATION. ONE OR BOTH OF THE SPANNING LEVEL HEIGHTS HAS AN EVENT OF 151. CALCULATED HEIGHT OBSERVATION IS CONSIDERED TO BE OF BAD QUALITY. ZRC-> ZQM= 15
168 B REPORT THAT IS ONE OF A SUB-TYPE FOR WHICH DATA CARD SWITCHES ARE SET TO EXCLUDE ALL DATA OF THAT SUB-TYPE (E.G., SATELLITE WIND REPORTS). OBSERVATION IS FLAGGED FOR NON-USE BY ANALYSIS. PRC-> PQM= 15
ZRC-> ZQM= 15
TRC-> TQM= 15
QRC-> QQM= 15
WRC-> WQM= 15
169 B SURFACE REPORT (ALL TYPES). HEIGHT (ELEVATION) OBSERVATION IS CONSIDERED TO HAVE THE SAME QUALITY AS THAT OF THE PRESSURE OBSERVATION. ZRC-> ZQM= PQM
170 B UPPER-AIR, ACARS AIRCRAFT OR SURFACE REPORT (ALL TYPES).  OBSERVED OR CALCULATED DEWPOINT TEMPERATURE IS LESS THAN 215 KELVIN.  BOTH DEWPOINT AND OBSERVED OR CALCULATED SPECIFIC HUMIDITY OBSERVATIONS ARE CONSIDERED TO BE OF BAD QUALITY. QRC-> QQM= 15
171-190 RESERVED FOR FUTURE USE
EVENTS # 191-199 PERTAIN TO DATA OBSERVATIONS AND/OR QUALITY MARKERS THAT ARE GENERATED BY THE SDMEDIT FUNCTION IN THE DUMPING PROCESS. (NOTE: IN ALL CASES PWR AFFECTED ONLY FOR SSM/I AND GOES RETRIEVALS.)
191 B SDM HAS CHANGED THE VALUE OF THE OBSERVATION. OBSERVATION IS CONSIDERED TO BE OF GOOD QUALITY. PRC-> POB= **,PQM= 1
ZRC-> ZOB= **,ZQM= 1
TRC-> TOB= **,TQM= 1
WRC-> UOB,VOB= **, WQM= 1
PWR-> PWO= **,PWQ= 1
192 B OCEAN PRODUCTS CENTER HAS CHANGED THE VALUE OF THE OBSERVATION FOR A SURFACE MARINE REPORT. OBSERVATION IS CONSIDERED TO BE OF GOOD QUALITY. TRC-> TOB= **,TQM= 1
WRC-> UOB,VOB= **, WQM= 1
PRC-> POB= **,PQM= 1
193 B OBSERVATION IS DEEMED SUSPECT BY AUTOMATIC QUALITY CONTROL CHECKS AND IS SUBSEQUENTLY REJECTED BY SDM. OBSERVATION IS CONSIDERED TO BE OF BAD QUALITY. PRC-> PQM= 11
ZRC-> ZQM= 11
TRC-> TQM= 11
WRC-> WQM= 11
PWR-> PWQ= 11
194 B OBSERVATION IS DEEMED SUSPECT BY AUTOMATIC QUALITY CONTROL CHECKS BUT IS SUBSEQUENTLY ACCEPTED BY SDM. OBSERVATION IS CONSIDERED TO BE OF GOOD QUALITY. PRC-> PQM= 1
ZRC-> ZQM= 1
TRC-> TQM= 1
WRC-> WQM= 1
PWR-> PWQ= 1
195 B REPORT IS ON MANUAL REJECT LIST. OBSERVATION IS FLAGGED FOR NON-USE BY ANALYSIS.  PRC-> PQM= 12
ZRC-> ZQM= 12
TRC-> TQM= 12
WRC-> WQM= 12
PWR-> PWQ= 12
196 B SDM HAS PLACED A KEEP FLAG ON THE OBSERVATION. DATA WILL BE USED BY THE ANALYSIS. (PMR AFFECTED ONLY FOR SURFACE MARINE REPORTS FOR WHICH A KEEP FLAG CAN BE PLACED ON THE OBSERVATION BY OCEAN PRODUCTS CENTER. OPC CAN ALSO PLACE A KEEP FLAG ON TQM AND WQM FOR MARINE SURFACE REPORTS.) PRC-> PQM= 0
ZRC-> ZQM= 0
TRC-> TQM= 0
WRC-> WQM= 0
PWR-> PWQ= 0
PMR-> PMQ= 0
197 B SDM HAS PLACED A PURGE FLAG ON THE OBSERVATION. DATA ARE FLAGGED FOR NON-USE BY ANALYSIS. {PMR AFFECTED ONLY FOR SURFACE REPORTS FOR WHICH A PURGE FLAG CAN BE PLACED ON THE OBSERVATION BY OCEAN PRODUCTS CENTER. (IN THIS CASE PQM ALSO FLAGGED). OPC CAN ALSO PLACE A PURGE FLAG ON TQM AND WQM FOR MARINE SURFACE REPORTS.}  PRC-> PQM= 14
ZRC-> ZQM= 14
TRC-> TQM= 14
WRC-> WQM= 14
PWR-> PWQ= 14
PMR-> PMQ= 14
198-199 RESERVED FOR FUTURE USE


 


Table 8.c   Other unrecorded events in PREPRO that result in originally reported observational data not being processed into the PREPBUFR file (last revised 9/25/2008).

KEY:
                               G - OCCURS IN GFS/GDAS VERSION OF PREPRO.
                               E - OCCURS IN NAM/NDAS VERSION OF PREPRO.
                               C - OCCURS IN CDAS VERSION OF PREPRO.
                               B - OCCURS IN ALL OPERATIONAL VERSIONS OF PREPRO.
                               N - CURRENTLY DOES NOT OCCUR IN ANY OPERATIONAL VERSION OF PREPRO.
 

B - An entire report is excluded from processing if either its latitude or its longitude is reported as missing or outside the range of possible values.

E - An entire report is excluded from processing if it is outside the acceptable data search area as set in the data card switches. 

B - An entire report is excluded from processing if it is outside the acceptable time window as set in the data card switches.

B - An upper-air category 4 (winds-by-height) level is excluded from processing if its spanning levels with reported pressure and/or height are out of order.

B - An entire flight level reconnaissance report (report type 132/232) which is reporting an estimated sea-level pressure is excluded from processing if its reported sea-level pressure is less than 938.25 mb or greater than 1063.25 mb. The surface mass data for this report will later be processed as a surface report with report type 182 (reconnaissance report with estimated mean sea-level pressure).

C - When ATOVS processing is set to filter retrievals to 250 km resolution, every eleventh ATOVS retrieval is excluded from processing (done via a namelist switch). 

B - An entire surface land report is excluded from processing if its reported elevation is either missing or greater than 10,000 meters.

B - An entire surface report (land or marine) is excluded from processing if its reported surface pressure, altimeter setting and mean sea-level pressure are all missing. The exception are marine ATLAS buoy reports.

B - An entire surface marine report is excluded from processing if it is  located over the Great Lakes and has a reported elevation of less than 7.5 meters.

B - An entire surface marine report is excluded from processing if its reported surface pressure is missing and its reported elevation is greater than 7.5 meters.

B - Any observational variable is excluded from processing if its packed value is greater than 32767. The exception is height, where the limit is 99999. 

B - In general, all observational data on a pressure level that is a duplicate to another pressure level in the report is excluded from processing if its quality marker is worse or the same as the duplicate value.

N - An entire Indian satellite cloud-drift wind report is excluded from processing if its reported latitude is greater than 40 degrees North. It is assumed that this reported latitude is in error. Note: This data type is currently not operational in either the NAM or GFS/GDAS version.