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Code Name Units Max Notes Max Number Database
QC Level* of Levels FSL AWIPS
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Profiles 1 200
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DD wind direction deg 1 2 X X
FF wind speed m/s 1 2 X X
U u wind component m/s 1 2 X X
V v wind component m/s 1 2 X X
T air temperature K 2 3 X X
TV virtual temperature kg/kg 2 3 X X
TD dewpoint temperature K 2 4 X X
RH relative humidity % 2 4 X X
Q specific humidity kg/kg 2 4 X X
DPD dewpoint depression K 2 4 X X
AH absolute humidity g/(m**3) 2 4 X X
WVMR water vapor mixing ratio g/kg 2 4 X X
REPWVQC reported water vapor QC code 0 5 X X
RH1 rh sensor 1 % 0 13,14 X
RH2 rh sensor 2 % 0 13,14 X
RHUNCER rh uncertainty % 0 13,14 X
TDUNCER dewpoint uncertainty K 0 13,14 X
MEDEDR median eddy dissipation rate m**(2/3)/s 1 15,16 X
MAXEDR maximum eddy dissipation rate m**(2/3)/s 1 15,16 X
TURBIDX turbulence index code 1 6,15,16 X X
HT pressure altitude m 2 7 X X
GPSHT geometric height determined by GPS m 0 13 X
BAROHT barometric-corrected height m 0 7 X
P pressure Pa 2 7 X X
LAT track latitude deg N 1 X X
LON track longitude deg E 1 X X
ICECOND icing condition code 1 8,15 X
ROLL aircraft roll angle flag code 0 9 X X
TDAYSEC ob. time in sec. since midnight UTC 0 X X
Single-level Observations
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DATASRC source that provided the data code 0 10 X
PRFTYPE profile type code 0 11 X X
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Code Name Character Notes Database
Size FSL AWIPS
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STALOC airport location 51 12 X
FLNUM flight number 13 X
TAILNUM tail number 12 (FSL) 9 (AWIPS) X X
Value Meaning
----- -------
45 Missing data
48 Normal operations, ground speed > 60 knots
49 Normal operations, nonmeasurement mode,
ground speed < 60 knots
50 Small RH, RH measured is < 1.5%; RH set to 1.5%
51 Humidity element is wet. RH at 5.0 volts for < 120 seconds
52 Humidity element contaminated.
RH at 5.0 volts for > 120 seconds
53 Heater fail
54 Heater fail and wet/contaminated humidity element
55 Single validity bad. One or more of the input parameters
for the mixing ratio calculation are invalid: TOT_PRESS,
MACH TAT_WVSS, or RH. If RH is full scale, RH is
considered valid to allow wet/contaminated status to be
posted.
56 Numeric error. Calculated mixing ratio at or above 100,
below 0.1-9, or negative, or absolute value of
denominator of calculations is less than 10-15.
57 Dew point is greater than temperature
Reported water vapor QC codes -- AWIPS database:
Value Meaning
----- -------
0 Normal operations, measurement mode
1 Normal operations, nonmeasurement mode
2 Small RH
3 Humidity element is wet
4 Humidity element contaminated
5 Heater fail
6 Heater fail and wet/contaminated humidity element
7 At least one of the input parameters used in the calculation
of mixing ratio is invalid
8 Numeric error
9 Sensor not installed
63 Missing data
Value Meaning
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0 median < 0.1 | maximum < 0.1
1 median < 0.1 | 0.1 <= maximum < 0.2
2 0.1 <= median < 0.2 | 0.1 <= maximum < 0.2
3 median < 0.1 | 0.2 <= maximum < 0.3
4 0.1 <= median < 0.2 | 0.2 <= maximum < 0.3
5 0.2 <= median < 0.3 | 0.2 <= maximum < 0.3
6 median < 0.1 | 0.3 <= maximum < 0.4
7 0.1 <= median < 0.2 | 0.3 <= maximum < 0.4
8 0.2 <= median < 0.3 | 0.3 <= maximum < 0.4
9 0.3 <= median < 0.4 | 0.3 <= maximum < 0.4
10 median < 0.1 | 0.4 <= maximum < 0.5
11 0.1 <= median < 0.2 | 0.4 <= maximum < 0.5
12 0.2 <= median < 0.3 | 0.4 <= maximum < 0.5
13 0.3 <= median < 0.4 | 0.4 <= maximum < 0.5
14 0.4 <= median < 0.5 | 0.4 <= maximum < 0.5
15 median < 0.1 | 0.5 <= maximum
16 0.1 <= median < 0.2 | 0.5 <= maximum
17 0.2 <= median < 0.3 | 0.5 <= maximum
18 0.3 <= median < 0.4 | 0.5 <= maximum
19 0.4 <= median < 0.5 | 0.5 <= maximum
20 0.5 <= median | 0.5 <= maximum
63 Missing value
The user can request either altitude or pressure, and the MADIS API will do the conversion and return the requested variable. In either case, the QC results from the altitude variable will be applied.
Value Meaning
----- -------
0 no ice is present
1 ice is present
Value Meaning
----- -------
0 good
1 bad
Value Meaning
----- -------
0 ACARS (direct to FSL from airlines)
1 MDCRS (from TG's BUFR file from ARINC)
2 appeared in both ACARS and MDCRS data streams
3 AMDAR data, including LH BUFR data
4 TAMDAR data (from AirDat, LLC)
5 Canadian AMDAR data from CMC
6 European AMDAR data
Value Meaning
----- -------
-1 Descending
1 Ascending
Note that the profiles are always ordered by ascending height. The
profile type indicates whether the data were taken on landing or
takeoff.
The RH uncertainty variable is the theoretical RSS (root-summed-squared) uncertainty of the consensus RH value in percent. Two error source components are used in the RSS calculation: temperature uncertainty (assumed to be +/- 0.4C) and the RH sensor uncertainty (assumed to be +/- 2% absolute error [not RH times 2%]). Other inputs to the calculation are air temperature, pressure altitude and indicated air speed. The uncertainty is additive with the reported humidity, so if RH is 30% and RHUNCER is 20%, the estimated range of the RH is 30% +-20%, i.e., 10-50%.
Dewpoint uncertainty is derived from the RH uncertanty variable in the following way. If the RH uncertainty is ≥ 0.49, the dewpoint uncertainty is set to 999. Otherwise, two subsidiary dewpoints are calculated by assuming the RH is 1) RH + RHUNCER, and, 2) RH - RHUNCER. The dewpoint uncertainty is one-half the difference between 1) and 2).