SALLJEX Aircraft: P-3 Meteorology Navigation and State Parameters - Standard
Tape Format (NOAA/AOC)
1.0 General Information
The SALLJEX Aircraft: P-3 Meteorology Navigation and State Parameters dataset in
NOAA/AOC Standard Tape format is one of several datasets archived by the
University Corporation for Atmospheric Research/Joint Office for Science
Support (UCAR/JOSS) in support of the South American Low Level Jet EXperiment
(SALLJEX). The data were collected by the National Oceanic and Atmospheric
Administration/ Aircraft Operations Center P-3 aircraft (NOAA/AOC).
2.0 Data Contact
Jose Meitin (meitin@ucar.edu)
3.0 Data and Format Information
3.1 Detailed Data Description
This dataset is comprised of binary data files in NOAA/AOC Standard Tape Format.
Data collected aboard the NOAA P-3 aircraft by AOC are stored to tape and
labeled by flight number. The flight number consists of the year, month, and
day of the flight presented as YYMMDD, followed by a one-letter designator
indicating which P-3 the data came from. For example, flight number 010901i
indicates the data were collected aboard the NOAA43 P-3 on Sept 1, 2001. See
table 3.1.1 for a complete list of possible designators. Note that only the
NOAA43 was flown during SALLJEX, so all data files have names like YYMMDDi.
Table 3.1.1 - aircraft designators
Aircraft Designator Notes
NOAA42 (N42RF) H First P3
NOAA43 (N43RF) I Second P3
During a P-3 flight, data are collected at two different rates: fast and slow.
Slow data is collected at a rate of one record per second (1 Hz). The frequency
at which fast data is collected varies. The lowest is 10 Hz for the radar
altimeter 159 and 40 Hz for the the inertial parameters (lat,lon,heading,pitch,
roll,etc.).
After a flight, all output from the standard suite of instrumentation aboard
the P3 are quality controlled (QC) with respect to other similar values. A
choice is made of which pressure and temperature values will be used and
modifications/edits are made to erroneous data that may be observed for the
selected sensors. All pressure and temperature sensors are bench calibrated once
a year.
The data are stored in two types of records. Slow data records are always 440
bytes long. Ten slow data records are output to the file at a time, creating
4400 byte data blocks. Fast and slow data are interleaved onto a single tape.
Fast data files always include slow data. Slow data files may contain fast data
as well. All of the data are raw field data.
The output of this process is data in the NOAA/AOC Standard Tape Format. This
is the data provided in this dataset.
3.2 Detailed Format Description
Conventions
This data uses the following angle conventions. These are the same conventions
used in the C-130 data.
a) pitch: positive is nose up
b) roll: positive is right wing down (facing forward)
c) attack: positive has the airstream coming from below the aircraft's
center line
d) sideslip: positive has the airstream coming from the right side of
the aircraft (facing forward)
e) drift angle: positive has the ground track to the right of true heading
For more information, refer to RAF Bulletin No. 23, Fig. 2.1 available on line:
http://raf.atd.ucar.edu/Bulletins/bulletin23.html
This data uses the following velocity conventions. These are the same
conventions used in the C-130 data.
a) U, E and X are E/W components (positive is to the east)
b) V, N and Y are N/S components (positive is to the north)
c) W is vertical component (positive is up, away from earth's surface)
For more information, refer to RAF Bulletin No. 9 available on line:
http://raf.atd.ucar.edu/Bulletins/b9appdx_B.html#WINDS
Record format
There are 6 record types within the AOC Standard Tape Format. These record
types are as follows:
TYPE 1 - HEADER RECORD. CONTAINS INFORMATION REGARDING FLIGHT
IDENTIFICATION.
TYPE 2 - ORIGINAL DATA TRANSFORMATION RECORD. CONTAINS
COEFFICIENTS REQUIRED TO CONVERT ORIGINAL TAPE
PARAMETERS TO SCIENTIFIC UNITS...RAW DATA ON RECORD 4
TO PROCESSED DATA ON RECORD 5.
TYPE 3 - CONVERTED DATA TRANSFORMATION RECORD. ESSENTIALLY A
METHOD FOR PROPER PLACING OF THE DECIMAL POINT IN RECORD 5.
TYPE 4 - ORIGINAL DATA RECORD.
TYPE 5 - CONVERTED/DERIVED DATA RECORD.
TYPE 6 - TRAILER RECORD.
Each record type is described in more detail below. Note that word address
refers to the location in the record of the parameter.
3.2.1 TYPE 1 - HEADER RECORD
WORD PARAMETER
-------------------------------------
1. TYPE OF RECORD (1)
2. NUMBER OF WORDS IN RECORD (17)
3. AIRCRAFT NUMBER (42 OR 43)
4. YEAR OF FLIGHT
5. MONTH
6. DAY
7. HOUR BEGINNNING OF FLIGHT
8. MINUTE
9. SECOND
10. HOUR END OF FLIGHT
11. MINUTE
12. SECOND
13. DATE PROCESSED MO DY Y (XXXXX)
14. DATE OF PROGRAM MO DY Y (XXXXX)
15. NOT USED
16. NOT USED
17. NUMBER OF TAPE
3.2.2 TYPE 2 - ORIGINAL DATA TRANSFORMATION RECORD
IMPORTANT NOTES ON THE TYPE 2 RECORD FOR N43RF
The word address refers to the location in the TYPE 4 record of the
parameter. The four values following the word address are the static
constants for that parameter as determined by AOC's calibration laboratory.
Since the information on Record 4 of the standard tape is in engineering
units (counts) a conversion coefficient must be applied to convert the
counts to a voltage. Excluding the intercept (A0), the conversion
coefficient is multiplied to the remaining static constants in the
following manner:
A1 = A1(static cal lab constant) * conversion coef.
A2 = A2(static cal lab constant) * (conversion coef. **2)
A3 = A3(static cal lab constant) * (conversion coef. **3)
TRANSFORMATION RECORD - TYPE 2
WORD PARAMETER
-----------------------------------------
1. TYPE (2)
2. NUMBER OF WORDS IN RECORD (404)
IF THE WORD ADDRESS IS POSITIVE THEN THE FOLLOWING FORMAT HOLDS
TRUE,
3. WORD ADDRESS IN TYPE 4 RECORD
4. CUBIC COEFFICIENT A3
5. SQUARE COEFFICIENT A2
6. SLOPE A1
7. INTERCEPT A0
8. WORD ADDRESS IN TYPE 4 RECORD
ETC.
PARM(raw) = A3*(counts) + A2*(counts) + A1*(counts) + A0
**************************************************************************
If the word address is a negative number, the third and fourth numbers are
coefficients used to compute the dynamic calibration constant for the
parameter. The fifth number is the offset that was calculated from the
most recent calibration flight.
IF THE WORD ADDRESS IS NEGATIVE THEN THE FOLLOWING FORMAT HOLDS TRUE
WORD PARAMETER
-----------------------------------------
8. WORD ADDRESS IN TYPE 4 RECORD
9. BLANK (ALL ZEROS)
10. SLOPE
11. INTERCEPT
12. OFFSET FROM TOWER FLY BY
13. WORD ADDRESS IN TYPE 4 RECORD
ETC.
*****************************************************************
The following lines of code describe the computation of the
dynamic calibration constants for the parameters:
NOTE!! PSW - Rosemount static pressure from wingtip
PQW - Rosemount dynamic pressure from wingtip
PSF - Rosemount static pressure from fuselage
PQF1 - Rosemount dynamic pressure from fuselage (1281)
PQF2 - Rosemount dynamic pressure from fuselage (1221)
TT1 - Total temperature 1 from fuselage
TT2 - Total temperature 2 from fuselage
DW1 - Dewpoint temperature 1
DW2 - Dewpoint temperature 2
DAP - Measured dynamic attack pressure
DBP - Measured dynamic slip pressure
AP(1) - Measured attack pressure from fuselage
BP(1) - Measured slip pressure from fuselage
AA - Attack angle
SA - Slip angle
IMPORTANT NOTICE!!! Beginning with Hurricane Season 1993 the measured
static and dynamic pressures will be dynamically
corrected using the following equations,
PQERR= .17701*pqm - .0129067*pqm**2 + .00190547*pqm**2.5
- 7.8284e-05*pqm**3, where pqm is measured dyn. pressure
PQCOR = -PQERR
ALTERR= -.35 + .50/(1.+(psm/410.)**(-25))
- (.15/(1.+(psm/640.)**(-12)), where psm is
ALTCOR = -ALTERR measured static pressure
PS = PSM + PQCOR + ALTCOR, corrected static pressure
PQ = PQM - PQCOR - ALTCOR, corrected dynamic pressure
These aforementioned equations are the results from a trailing cone flight.
Word Equation
-145 DW1(calc) = DW1(measured) + Offset
-166 DW2(calc) = DW2(measured) + Offset
-146 AA(calc) = Intercept + Slope*(AP(1)/DAP)
-148 SA(calc) = Intercept + Slope*(BP(1)/DBP)
2. 404.
1.0000E+02 0.0000E+00 0.0000E+00 1.0000E+00 -1.100E+01
9.7000E+01 0.0000E+00 0.0000E+00 1.0000E+00 0.0000E+00
1.4200E+02 0.0000E+00 0.0000E+00 3.6621E-04 0.0000E+00
1.4300E+02 0.0000E+00 0.0000E+00 3.7396E-03 -7.311E-01
1.4400E+02 0.0000E+00 0.0000E+00 2.1909E-03 -6.536E-01
1.4500E+02 0.0000E+00 0.0000E+00 3.3159E-03 -1.755E+01
1.6600E+02 0.0000E+00 0.0000E+00 3.0674E-03 -7.090E-02
1.5200E+02 8.9244E-13 -4.808E-08 2.9788E-03 4.0947E+00
2.0500E+02 8.3276E-13 -4.520E-08 2.9456E-03 4.2246E+00
1.5400E+02 5.2296E-13 -1.526E-08 2.1861E-03 1.0148E+01
1.5600E+02 0.0000E+00 0.0000E+00 1.4963E-03 0.0000E+00
1.5700E+02 0.0000E+00 0.0000E+00 1.4963E-03 0.0000E+00
1.4600E+02 0.0000E+00 0.0000E+00 2.1011E-03 8.2000E-03
1.4700E+02 0.0000E+00 0.0000E+00 5.2708E-03 -5.915E-01
1.4800E+02 0.0000E+00 0.0000E+00 2.1013E-03 -2.750E-02
1.4900E+02 0.0000E+00 0.0000E+00 5.2379E-03 2.1010E-01
1.5000E+02 0.0000E+00 0.0000E+00 2.4403E-02 2.5151E+02
1.5100E+02 0.0000E+00 0.0000E+00 5.0352E-03 -2.083E-01
1.7400E+02 0.0000E+00 0.0000E+00 2.4408E-02 2.5003E+02
1.7500E+02 0.0000E+00 0.0000E+00 5.0400E-03 5.7000E-03
1.7600E+02 0.0000E+00 0.0000E+00 1.0546E-02 -1.823E+00
1.5800E+02 0.0000E+00 0.0000E+00 2.1073E-03 -7.272E-01
1.5900E+02 0.0000E+00 0.0000E+00 2.1018E-03 -9.610E-02
1.6000E+02 0.0000E+00 0.0000E+00 5.2702E-03 3.2220E-01
1.6200E+02 0.0000E+00 0.0000E+00 1.5224E-03 -9.940E-02
1.6300E+02 0.0000E+00 0.0000E+00 3.7277E-03 1.6070E-01
1.6400E+02 0.0000E+00 0.0000E+00 5.1879E-03 -2.066E-01
1.9000E+02 0.0000E+00 0.0000E+00 3.0518E-03 0.0000E+00
1.9100E+02 0.0000E+00 0.0000E+00 3.0518E-03 0.0000E+00
1.9200E+02 0.0000E+00 0.0000E+00 3.0518E-03 0.0000E+00
-1.500E+02 0.0000E+00 -2.280E-01 2.9350E-02 0.0000E+00
-1.510E+02 0.0000E+00 9.8043E-01 0.0000E+00 0.0000E+00
-1.740E+02 0.0000E+00 -2.527E-01 -1.026E-02 0.0000E+00
-1.750E+02 0.0000E+00 1.0294E+00 0.0000E+00 0.0000E+00
-1.760E+02 0.0000E+00 1.0302E+00 0.0000E+00 0.0000E+00
-1.450E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
-1.660E+02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
-1.460E+02 0.0000E+00 6.2500E+00 1.0260E+00 0.0000E+00
-1.480E+02 0.0000E+00 7.5414E+00 3.5000E-01 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
3.2.3 TYPE 3 - CONVERTED DATA TRANSFORMATION RECORD
WORD PARAMETER
---------------------------------------
1. TYPE (3)
2. NUMBER OF WORDS IN RECORD (192)
3. WORD ADDRESS IN TYPE 5 RECORD
4. DIVISOR
5. WORD ADDRESS
6. DIVISOR
ETC.
Y = X(WORD ADDRESS) / DIVISOR
CONTENTS OF RECORD 3
3
192
12 1 13 10 14 1 15 10 16 1 17 10 18 10
19 10 20 10 21 10 22 10 23 10 24 10 25 10
26 10 27 10 28 10 29 10 30 10 31 10 32 10
33 10 34 10 35 1 36 10 37 10 38 10 39 10
40 1 41 1 42 10 43 1 44 10 45 1 46 10
47 10 48 10000 49 10000 50 10 51 10 52 10 53 10
54 10 55 10 56 10 57 10 58 10 59 10 60 10
61 100 62 100 63 10 64 10 65 10 66 10 67 10
68 10 69 1000 70 1000 71 1 72 100 73 100 74 100
75 1 76 1 77 0 78 0 79 0 80 10 81 10
82 10 83 0 84 0 85 0 86 0 87 0 88 0
89 0 90 0 91 0 92 0 93 0 94 0 95 0
96 0 97 0 98 0 99 0 100 0 101 0 102 0
103 0 104 0 105 0 106 0
3.2.4 TYPE 4 - ORIGINAL DATA RECORD
------------------------------------------------------------------
N43RF 222 WORD TYPE 4 RECORD SALLJEX 2003
------------------------------------------------------------------
The type 4 record contains raw data from the AOC slow tape. The
data are recorded as 16 bit HP words. Most of the data is recorded
as integer counts and must be converted to volts and then to mean-
ingful units by using the type 2 record. All of the navigation
data is stored in a special format, and can only be read by
performing special bit shifting operations. If examination of
the raw navigation data is desired, ask AOC for a copy of the
bit shifting subroutine called PACK.
Beginning with the 2000 Hurricane Season, locations 32-38 contain
GPS data from the ASHTECH BR2G system (BR2G prefix).
Array
Location Description
-----------------------------------------------------------------------
1 Type of record (4)
2 Number of words in record (222)
3 MS byte: Slow tape ID LS byte: Aircraft #
4 Size of slow tape logical record = 220
5-10 Micro 99 time - yr,mo,da,hr,mn,sc
11-13 Time based generator 1 - hr,mn,sc; binary (not BCD)
14-16 Time based generator 2 - same as TBG 1
17-19 Collins GPS time of fix - hr, min,sec; same as TBG's
20-21 Collins GPS altitude - MS bit = -102400*32 ft
22-23 Collins GPS latitude - MS bit = -PI*4 radians
24-25 Collins GPS longitude - MS bit = -PI*4 radians
26-27 Collins GPS north vel. - MS bit = -1638.4*2 knots
28-29 Collins GPS east vel. - MS bit = -1638.4*2 knots
30-31 Collins GPS vert. vel. - MS bit = -2048*2 ft/sec
32 BR2G GPS Data Time; 0 - 36000, lsb= 1/100 sec
33 BR2G GPS Altitude; +/- 32767, lsb= 1 foot
34-35 BR2G GPS Latitude; msb= -PI*4 radians
36-37 BR2G GPS Longitude; msb= -PI*4 radians
38 BR2G GPS Status and Horiz. Dilution of Precision
bits 15,14: 00 - no position, 01 - uncorrected
10 - diff corrected, 11 - almanac used
bits 13,8: # of satellites used,
ls byte- HDOP 00 - 99
39 Spare
40 Collins GPS north accel. - MS bit = -128 m/s**2
41 Collins GPS east accel. - MS bit = -128 m/s**2
42 Collins GPS vert. accel. - MS bit = -128 m/s**2
43 Collins GPS Ch. 1 Status 1
44 Collins GPS Ch. 1 Status 2
45-52 Collins GPS Ch. 2-5 Status - same format as Ch. 1
53 Collins GPS Figure of Merit (FOM) word
Note: Time FOM from word 64 is in reserved bits
(12,11,5,4 in HP notation; 3,4,10,11 in Collins
notation)
54 Collins GPS expected horiz. error - ls bit- 1 meter
55 Collins GPS expected vert. error - ls bit- 1 meter
LS byte - count starting at array location 41.
56 Spare
57-58 INE 1 Altitude - MS bit = -102400*32 ft
59-60 INE 1 Latitude - MS bit = -PI*4 radians
61-62 INE 1 Longitude - MS bit =-PI*4 radians
63-64 INE 1 North Vel. - MS bit = -1638.4*2 knots
65-66 INE 1 East Vel. - MS bit = -1638.4*2 knots
67-68 INE 1 Vert speed - MS bit = -2048*2 ft/sec
69-70 INE 1 Drift Angle - MS bit = -PI*4 radians
71-72 INE 1 Heading - MS bit = -PI*4 radians
73-74 INE 1 Pitch Angle - MS bit = -PI*4 radians
75-76 INE 1 Roll Angle - MS bit = -PI*4 radians
77-96 INE 2 Data - Same as INE 1
97 APN 232 RA data in meters; 1 sec avg
98 Spare; 1 sec avg
99 Spare; 1 sec avg
100 RA - APN159 Synchro data in meters; 1 sec avg
101 RA - APN159 digital encoder in meters
102 # of INE bursts av'd this sec; MS byte:INE 1
LS byte:INE 2
103 GPS and APN232 RA burst count; ms nybble - GPS
lat/lon/alt burst count, 2ND nyble - GPS velocity
east/north/vert burst count,
LS byte - APN232 RA number of words averaged
this second.
104 # of ISEC word 98 and 99 samples avg this second;
ms byte- ISEC(98), ls byte- ISEC(99)
105 Dig_Err: Error flags for Dig. Avg; bit 0 for APN232
106 Spare
107 ADC unit status - from ADC slow data burst
108 IAU unit status - from IAU burst
109 Operator selections: MS nybble - temp probe
nybble 2 - nav. unit
nybble 3 - alt. source
110 Status from Wing Wiring Junction Box
111 Status from Cloud Physics Station
112 Status from Flight Director Station
113 Spare
114 Event switch data - Nav, Sta1, Sta2, Sta3
115 Event switch data - Nrack, Sta5, C3X, Sta7
116 Event switch data - F/D, Pilot
117
118
119 Formvar count
120 Formvar speed
121
122-140 Spare
141 M29 10 msec tic when time was read - use for clock
drift tracking.
142 J-W Liquid water
143 RMST TOTAL TEMP #1
144 RMST TOTAL TEMP #2
145 Dew Point 1 (DW1) GENERAL EASTERN
146 AP Alpha (attack) Pressure
147 DAP Differential Alpha Pressure
148 BP Beta (slip) Pressure
149 DBP Differential Beta (slip) pressure
150 PSW Rosemount static pressure from wingtip(#1281)
151 PQW Rosemount dynamic pressure from win#tip(#1281)
152 RD Radiometer Down measures SST (PRT-5)
153
154 RS Side (CO2) radiometer temperature
155
156 Vertical Acceleration 2
157 Vertical Acceleration 1
158 RADOME ATTACK PRESSURE
159 RADOME SIDESLIP PRESSURE
160 RADOME DIFF. PRESSURE (RPQ)
161 RADOME IMPACT PRESSURE
162 Spare
163-165 Spare
166 DEWPOINT #2 (DW2) Edge Tech 137
167 Spare
168 Spare
169 DEWPOINT #3 (DW3) Buck Research 1011C
170 DEWPOINT BALANCE (DW3) Buck Research 1011C
171-172 Spare
173 King Liquid water
174 PSF - COPILOT ROSEMOUNT #1281 (FUSELAGE)
175 PQF1 - COPILOT ROSEMOUNT #1281 (FUSELAGE)
176 PQF2 - COPILOT ROSEMOUNT #1221F(FUSELAGE)
177 TT1 Heater Current
178 TT2 Heater Current
179-188 Spare
189 Spare
190 Spare
191 Spare
192 Spare
193 Eppley Up Pyranometer 1 (yellow)
194 Eppley Up Pyranometer 2 (Red)
195 Eppley Up Pyranometer 3 (Clear)
196 Up Pyrgeometer
197 Up Pyrgeometer Case Temp
198 Up Pyrgeometer Dome Temp
199 Down Pyranometer 1 (Yellow)
200 Down Pyranometer 2 (Red)
201 Down Pyranometer 3 (Clear)
202 Down Pyrgeometer
203 Down Pyrgeometer Case Temp
204 Down Pyrgeometer Dome Temp
205 Up PRT-5 Radiometer
206 Spare
207 Spare
208 Spare
209 Spare
210 Spare
211 Spare
212 Spare
213 Spare
214 Spare
215 Spare
216-221 Spare
222 Checksum for this second
3.2.5 TYPE 5 - CONVERTED/DERIVED DATA RECORD
April 10, 2003 DATA RECORD TYPE 5 (SALLJEX 2003)
WORD SYM PARAMETER WORD SYM PARAMETER
1 TP TYPE(5) 26 HD HEADING (TRUE)
2 WD NO. WORDS/RECORD 27 PC PITCH
3 HR HOUR 28 RL ROLL
4 MN MINUTE 29 AA ATTACK ANGLE
5 SC SECOND 30 SA SLIP ANGLE
6 RC1 RECORD COUNT 31 J-W LIQ. WATER
7 RC2 RECORD COUNT 32 PQ DYNAMIC PRESSURE
8 SW1 SWITCHES 33 TD DEWPOINT TEMPERATURE
9 SW2 SWITCHES 34 RU RADIOMETER UP (IF AVAIL)
10 FL1 ERROR FLAGS 35 SW3 SWITCHES
11 FL2 ERROR FLAGS 36 UTAIL E/W VELOCITY OF TAIL
12 Xla1 LATITUDE (DEG) 37 VTAIL N/S VELOCITY OF TAIL
13 Xla2 LATITUDE (MIN) 38 WTAIL VERT VELOCITY OF TAIL
14 Ylo1 LONGITUDE (DEG) 39
15 Ylo2 LONGITUDE (MIN) 40 GA GEOPOTENTIAL ALT. (METER)
16 Ralt RADAR ALTITUDE (METER) 41 PALT PRESSURE ALT. (METER)
17 PS PRESSURE 42 DV D-VALUE
18 TA AMBIENT TEMPERATURE 43 HT HEIGHT STANDARD
WORD SYM PARAMETER WORD SYM PARAMETER
19 TW1 DEWPOINT SENSOR 44 SP SURFACE PRESSURE
20 RD RADIOMETER DOWN 45 RH RELATIVE HUMIDITY
21 RS RADIOMETER SIDE 46 TV VIRTUAL TEMPERATURE
22 GS GROUND SPEED 47 WAS VERTICAL AIRSPEED
23 TS TRUE AIRSPEED 48 GM RATIO SPECIFIC HEATS
24 WGS VERT. GROUND SPEED 49 AMA MACH NUMBER
25 TK TRACK 50 DA DRIFT
51 GSX E/W GROUND SPEED 67 WSB AVERAGE WIND SPEED
52 GSY N/S GROUND SPEED 68 WDB AVERAGE WIND DIR
53 TX E/W TRUE AIRSPEED 69 AV1 VERTICAL ACCELEROMETER #1
54 TY N/S TRUE AIRSPEED 70 AV2 VERTICAL ACCELEROMETER #2
55 WX E/W WIND SPEED 71 WAC SEC. WIND AVERAGED OVER
56 WY N/S WIND SPEED 72 BT1 AXBT1
57 WZ VERTICAL WIND SPEED 73 BT2 AXBT2
58 WS WIND SPEED 74 BT3 AXBT3
59 WD WIND DIRECTION 75 NAV 1 = INE 1
2 = INE 2
60 EW SAT. VAPOR PRES
76 ITMP TOTAL TEMP USED: 1 OR 2
61 EE VAPOR PRESSURE
77-78 NOT USED
62 MR MIXING RATIO
79 KING LIQ. WATER VOLTAGE
80 DPJ's VERT GRND SPEED
63 PT POTENTIAL TEMP
81 DPJ's VERT AIR SPEED
64 ET EQUIVALENT POT.TEMP.
82 DPJ's VERT WIND
65 WXB E/W AVERAGE WIND
83-106 NOT USED
66 WYB N/S AVERAGE WIND
PLEASE NOTE:
THE WORDS ARE 16 BITS LONG
THE RECORD LENGTH IS 106 WORDS
THE BLOCK LENGTH IS 10 RECORDS...10 x 106 = 1060 WORDS
WORDS 6 AND 7 ARE RECORD COUNTS TOTAL COUNT=RC1+RC2
WORDS 8,9,35 ARE EVENT SWITCHES
HIGH ORDER BIT OF WORD 8 IS SWITCH 1
WORDS 78 THRU 106 ARE BLANK EXCEPT FOR HURRICANE TAPES
WORDS 10 AND 11 ARE ERROR FLAGS
FLAG 1 IS IN HIGH ORDER BIT OF WORD 10. IF THE BIT IS ON,
A 1 INSTEAD OF A 0, THE DATA MAY BE IN ERROR.
THE FOLLOWING IS A LIST ASSOCIATING AN ERROR FLAG TO A
PARAMETER:
FLAG 1 TIME FLAG 11 TRUE AIRSPEED
2 LATITUDE 12 VERTICAL SPEED
3 LONGITUDE 13 TRACK
4 RADAR ALT 14 HEADING
5 AMBIENT PRESS 15 PITCH
6 AMBIENT TEMP 16 ROLL
7 DEWPOINT TEMP 17 ATTACK ANGLE
8 DOWN RADIOMETER 18 SLIP ANGLE
9 SIDE RADIOMETER 19 LIQUID WATER
10 GROUND SPEED 20 DYNAMIC PRESS
3.2.6 TYPE 6 - TRAILER RECORD
WORD PARAMETER
-------------------------------------
1. TYPE OF RECORD (6)
2. NUMBER OF WORDS IN RECORD (15)
3. NOT USED
4. TOTAL LENGTH OF FLIGHT IN SECONDS (UP TO 32677 SECONDS)
5. NUMBER OF SECONDS FLIGHT LASTS PAST 32677 SECONDS
6. HOUR TAKE OFF TIME
7. MINUTE " " "
8. SECOND " " "
9. HOUR BEGINNING OF REEL (BLOCK OUT TIME)
10. MINUTE " " "
11. SECOND " " "
12. HOUR END TIME OF REEL (BLOCK IN TIME)
13. MINUTE " " " "
14. SECOND " " " "
15. LAST REEL? (1=YES, 0=NO)
4.0 Quality Control
This data is provided as-is. No quality control has been performed on this
data by the University Corporation for Atmospheric Research/Joint Office for
Science Support (UCAR/JOSS).
5.0 References
All documentation were provided via personal communication from NOAA/AOC.