FLAT90: INSTRUMENTS Messages: 140 Entries..

reset sampling rate for propvane #3 (cosmos:202) 
 
Was set to 200Hz, so that we were getting data samples at 0.8 Hz (since 
report interval was 250) 
 
 

ati sonic zeros 
 
ati on marigold:200 - 
 
      offset      jitter 
ch 1.  -205        +7 
ch 2.   -21       +/-2 
ch 3.     0       +/-1 
 
 
ati on marigold:201 - 
 
      offset      jitter 
ch 1.   -19       +/-2 
ch 2.   -26       +/-1 
ch 3.     2       +/-1 
 
 

Changed prop pitch values in prop-vanes, since 
these were never updated to reflect the new props. 
 
serial#     sid      ht   old value  new value 
-------  ---------- ----  ---------  --------- 
 
 0001    cosmos 200  1m      288        291  
 0002    cosmos 201  2m      290        290  
 0003    cosmos 202  4m      293        296  
 0004    cosmos 203  7m      294        294  
 0005    cosmos 204 10m      291        293  
 0006    cosmos 205 13m      295        294  
 
There remains a question about the 4 m  
prop-vane because the sampling frequency 
during calibration was set to 200/sec 
rather than 250/sec. 
 

New ATI sonic biases entered 
 
These values were entered about 2 minutes ago (9/12/90 0150 GMT) 
 
ATI#1 1332 2994 1669 1611 1722 1658 
ATI#2 1183 1233 1723 1895 1720 2078 
ATI#3 3083 3349 1722 1722 2079 2323 
 
by spo with twh looking on. 
 
 

Zero values for UW sonics 
 
These values need to be entered into the preprocess calibration data values 
for FLAT: 
 
UW#1 a = -127  b = 8  c = 29 
UW#2 a = 180 b = -130 c = 176 
 
Note that speed of sound biases still need to be determined 
 

heat flux plates 
 
	the heat flux plates were installed in the ground. the table below identifies each sensor. 
assignment to analog channels has not been fully defined. Sensors are located east of sawhorse approximately 5 meters. 
 
	plate id	depth @		calibration   ((W/m^2)/mV) 
 
	blue		11cm *		42.6 
	red		3cm  *		38.4 
	yel		3cm		38.4 
 
	* - sensors are stacked one above the other. Tsoil probes at same depth within 6 cm. 
	@ - measurement is from bottom of furrow. 
 

Checked all five sonics with xstrip and rserial. 
All appear to be noise-free. 
 

Semmer mounted radiation sensors: 
 
Serial#       Name                Calibration 
 
90076    Net radiometer        13.4 (W/m^2)/mV 
26416F3  Up Pyrgeometer (PIR)  3.69 microV/(W/m^2) 
26214F3  Up PSP                8.72 microV/(W/m^2) 
26226F3  Dn PSP                8.85 microV/(W/m^2)    
27907F3  Dn Pyrgeometer (PIR)  3.60 microV/(W/m^2) 
 

NOAA ATI SONIC 
 
	The NOAA ati sonic was attached to serial channel 200 of Marigold today. 
The sensor is working; however, the message format has not been added to the configuration. 
 

RADIATION SENSORS 
 
	The radiation sensors were attached to cosmos today. 
An A/D board with one filter board was interface to cosmos. 
The filter board has all 8 channels set to gains of 200 with .5 hz 
filters. Channel assignments are in the table below. 
"channel_config" was modified to handle 8 analog channels on cosmos. 
No other files have been modified yet with respect to assignments. 
 
 
  channel	gain		filter		sensor		serial #	calibration 
ADAM	phys 
 
100	107	200		.5 hz		G.3m 		yellow		38.4 (W/m^2)/mV   
101	106	200		.5 hz		G.3m 		red 		38.4 (W/m^2)/mV  * 
102   	105	200		.5 hz		G.11m 		blue 		42.6 (W/m^2)/mV	 * 
103   	104	200		.5 hz		pyg.out.rad	27907F3		3.60 microV/(W/m^2) 
104   	103	200		.5 hz		pyg.in.rad	26416F3		3.69 microV/(W/m^2) 
105  	102	200		.5 hz		psp.out.rad	26226F3		8.85 microV/(W/m^2) 
106  	101	200		.5 hz		psp.in.rad	26214F3		8.72 microV/(W/m^2) 
107   	100	200		.5 hz		net.rad		90076		13.4 (W/m^2)/mV 
 
* - these two sensors are stacked one on top of the other. 
 
	 
			S.R. Semmer 
 

TSOIL CHANNEL 
 
	The tsoil probe was attached to channel 207 of cosmos this morning. "channel_config" 
was changed, and an archive file was started. At this time, we are not sure if Tupper and Tlower 
are correct. 
 
			S.R. Semmer 
 

TSOIL PROBE ORDER 
 
	Referring to the format message in "sio_converters" the tsoil probes are in 
the reverse order. This should be confirmed by somebody else. If this is the case, software 
may need to be changed. Charlie should be the one to decide about the software issue. 
 
 
			S.R. Semmer 
 
 

Level electronics mounted 
 
About 1100 local, the level electronics were mounted and connected.  Initial  
readings showed about +/-.3 degree variations from wind shaking (~6 m/s).   
 
I will work on the analog output from the display unit so we can look at this 
in more detail.  (Only one axis works on the display unit now.)   
 
Initial readings were in range of the levels, on the order of 1 degree, so overall 
alignment appears okay. 
 

spiking (code 01) on sat3 
 

wind speed on top annemometer (cosmos:205) 
about 50% to low. Direction looks okay. 
 

u channel on sat3 (marigold:202) definitely out.  
Currently reading 24541 cm/sec! 
 

top winds completely gone now (cosmos:205) 
 

From 10 am until 1:30 pm, Gerry Albright and Tom Horst 
used the Nikon theodolite to measure the azimuths of the 
prop-vanes and sonics.  The theodolite was oriented  
with a compass to true north, using a declination of 
13 deg E.  The orientations of the anemometers were 
determined by setting up the theodolite about 150 m 
in front of the anemometer and moving it until the  
line of sight coincided with the anemometer orientation. 
The prop-vane alignments are the orientation of their 
booms, the ATI sonic alignment is that of the u axis,  
and the UW sonic alignment is that of the boom. 
 
10 m prop-vane tower 
-------------------- 
 1 m prop-vane     124 deg 43' 35" 
 2 m prop-vane     124 deg 43' 46" 
 4 m prop-vane     124 deg 34' 00" 
 7 m prop-vane     124 deg 34' 08" 
10 m prop-vane     123 deg 26' 35" 
15 m prop-vane     123 deg 27' 18" 
 
 8 m ati sonic     123 deg 46' 42" 
 
10 m "UW" tower 
--------------- 
 5 m uw  sonic     123 deg 08' 25" 
 8 m ati sonic     121 deg 44' 06"* 
 
15 m "ATI" tower 
---------------- 
 5 m uw  sonic     122 deg 46' 12" 
 8 m ati sonic     121 deg 24' 58" 
 
NOAA tower 
---------- 
 5 m ati sonic     122 deg 34' 33" 
 
* repeat measurement (after moving theodolite) = 121 deg 21' 48" 
 

 
calibration coeeficients for the soviet sonic and fast t instrument: 
 
        gain            offset 
 
      u  -1.49 m/s/V      0.0 m/s 
      v  -1.31 m/s/V      0.0 m/s 
      w  -0.98 m/s/V      0.0 m/s 
 
     t1   1.21 degC/V     0.0 degC 
     t2   1.06 degC/V     0.0 degC 
 

 
Looked at sonic data with rserial.  The status is as follows 
 
marigold 201  suw1  data okay 
marigold 202  sat3  no data 
ragwort  200  sat2  spike flag 01 
ragwort  201  suw2  data okay 
cosmos   206  sat1  data okay 
 
 

 
 
calibration for Al Bedard's pressure sensors: 
 
 6mV / .001 mb 
 
on a +-5V analog channel, 
 
 (5V / 32767counts) * (1 mb / 6 V) = 0.00002543 mb/count 
 

Steve Oncley and Tom Horst moved the sonics from the  
comparison array to the tke budget array.  The current 
sonic configuration is  
 
10 m "UW" tower 
--------------- 
ragwort 200    suw1  @ 4 m 
ragwort 201    suw2  @ 7 m 
 
15 m "ATI" tower 
---------------- 
marigold 200   sat1  @ 4 m 
marigold 201   sat2  @ 7 m 
marigold 202   sat3  @ 13 m 
 
Checked for noise with rserial and found 
noise codes: 
 
sat2  01 
sat3  03 
 

Raised psychrometer tower after playing 
with wick at 10m.  Tower had been lowered 
around 23:00. 
 

prop at 15 meters 
 
	The anemometer at 15 meters was removed on the 19th in the morning. Upon examination, 
a broken wire existed in the cable to the direction encoder. Why this had anything to do 
with the wind speed going bad is a mystery. Once repaired, the sensor was working ok. 
Installation on the tower took place late in the afternoon, about 5 pm, on the 19th. 
 

Soviet sensor calibrations should have signs reversed for u, v and w. 
 Log entry #66 has been updated to reflect this. 
 

 
 
discovered that ati sonic at 4m has not been decoded since yesterday (#262) 
afternoon. Channel config did not get read by ingest until we 
recycled the adams today around 1900Z 
 

Mounted the PAM and fast pressure sensors 
today on the 15 m "ATI" tower at 4, 7, and 
13 m. 
 

Sonic level output during intercomparison 
 
ATI#2	       X -0.26 > -0.30 
(UW mast)      Y +0.00 > +0.06 
 
ATI#3          X +0.14 > +0.21 
(ATI mast)     Y +1.37 > +1.47 
 
all values in degrees - obtained by reading the LCDs on the  
funky display unit. 
 

Temp Profile - 10m twet 
 
	The 10m twet is reading high again. Since the test done 2 days ago showed good results 
by playing with the wick, I would assume the electronics is ok. Hopefully today we can lower 
the mast and try again. Maybe replace the wick or the psychrometer. 
 

Changed transducers on SAT3, u axis. 
The new zero wind readings on u and v are: 
 
u  70 +/- 7 
v  37 +/- 7 
 

More radiation sensors 
 
	Added the surface temperature sensor to cosmos today. 
It is interfaced into physical channel 114, logical 109, of the A/D. 
The output signal of this sensor is 0 to 1 volt 
representing -25 to 75 degrees C. The amplifier gain is set at 5. 
	The soviet net radiation sensor was placed on channel 108, logical, 
gain setting is 200. 
 
  channel		gain		filter		sensor		calibration 
logical	phys 
 
108	115		200		.5hz		net.rad.ussr	xxxxxx 
109	114		5		.5hz		t.surface	100 C/volt * 
 
* - t.surface has a -25 C offset, ie, .25 volt output = 0 C 
 
 
	These channels have been entered in channel_config, archive_config, and preprocess. 
 

2 Transducers changed on ATI#3, U1 and U2 
 
New zero for U from Tom using xstrip is 71 +/-7.  This has to be entered into the HC11. 
I'll do that now. 
 

Transducer changed on ATI#2, U1 (top path). 
 
New zero value will have to be entered.  Approximate zero was 50, but this was in windy 
conditions - another zero value should be taken and entered. 
 

New zero values entered in ATI#3 
 
Based on running ati_bias_calc for the values: 
old biases: 3083 3349 1722 1722 2079 2323 
zero winds: .71 .00 .00 @n=10 
delta cs: -1.30 .69 .61 @n=20 
c_ind: 339.85 @n=10 
T,Tw,P = 16.3 7.7 (psyc @ 10m) 837.95 (PAM baro @ 13m) 
new biases: 4127 4089 1760 1760 2151 2395 
 
Note that all values changed, when only U1 should have changed.  This either 
means that ati_bias_calc has an error, that the path lengths are not the same 
and equal to .25m (to be checked from the array measurements), or something else. 
 
 

Made zero wind readings on SAT2 & 3. 
 
Made the reading on SAT3 around mid-day and got 
u axis, 70 +/- ~7 counts 
v axis, 37 +/- ~7 counts 
 
The signal in both cases consisted of a baseline and 
unipolar excursion from the baseline.  The readings 
above were taken at the midpoint of the excursions. 
 
Made the readings on SAT2 after sunset and got 
u axis, -46 +/- 1 count 
 
Tried to redo SAT3, but aster crashed while Steve 
Semmer was attempting a back-up. 
 
 

All sonics clean at this time. 
 

Entered new biases for SAT2: 
 
ati_bias_calc: 
Enter the 6 present bias values: 
1183 1233 1723 1895 1720 2078 
Enter u,v,w values taken with the zero chamber: 
-.46 0. 0. 
Enter number of raw samples averaged for zero winds: 
10 
Enter delta cu,cv,cw values from M mode: 
.13 .03 -.17 
Enter number of raw samples averaged for delta c: 
20 
Enter indicated speed of sound: 
337.50 
Enter number of raw samples averaged for c_ind: 
10 
Enter Td, Tw, P (C and mb): 
12.31 6.11 845.78 
The corresponding humdity is:     4.47014 g/kg 
The calculated speed of sound is:     339.045 
The dc_dN factor is:     2.29903E-02 
The absolute sound speed bias correction is:   336 
The delta c bias corrections are:   57  13  -74 
The zero wind bias corrections are:   -100  0  0 
New biases are:   1362  1612  2046  2218  2130  2488 
 
 

All ASTER sonics spike-free 
 
 

Entered prop-vane orientation from  
theodolite measurements: 
 
 adam chnl   ht  input* output* 
----------  ---  -----  ------ 
cosmos 200  1 m  304.7   304.4 
cosmos 201  2 m  304.7   304.5 
cosmos 202  4 m  304.6   304.4 
cosmos 203  7 m  304.6   304.4 
cosmos 204 10 m  303.4   303.8 
cosmos 205 15 m  303.4   303.7 
 
*with prop-vane fixed by jig to 
be oriented with boom. 
 

DUE TO METALOG CRASH, DATE SHOULD BE: Sun Sep 23 15:01:08 GMT jd 
-------------------------- 
 
Checked sonic data for spikes with rserial.  All 
sonics are clean at this time.  Also checked the 
fast pressure sensors and the AIR fast T probes 
with xstrip.  Again data look good.  Finally, 
looked at winds and temps with graphic display 
and data look good.  twh 
 
 

DUE TO METALOG CRASH, DATE SHOULD BE: Sun Sep 23 21:26:28 GMT 1990 
---------------------------- 
 
Checked sonics, fast T's and pressure sensors. 
Data look ok. 
 
 

wet bulb at 10m is dead - currently reading -3.16 degC 
 

twet at 10 meters has come back to life! 
 

twet at 10m has flaked out again 
 

NOAA profilers: paper problems 
 
The 915 profiler had a paper jam in the printer during the output of the 19:00 (local) 
profile.  It seems to have kept on going, however.  Unfortunately, the problem was found at 
10:08 local, so the last profile was also lost. 
 
The acoustic sounder also ran out of paper, just after finishing hour 08:00.  It was 
refilled at 10:04 local, so all but the very beginning of hour 09:00 was lost. 
 
Both appear to be running okay now.  I'll check on the 915 at the next hour. 
 

Acoustic sounder out of ink again 
 
It printed about 10 minutes of data on the reloaded paper, and then ran out 
of ink.  New cartridge was just installed (10:39 local). 
 

USSR Net Radiation sensor 
 
	Visited the radiation farm between 17:00 and 18:00 gmt 
to attached the USSR net radiation sensor. Signal output 
looks good. Calibration information for sensor is 
16.0875 microv/(W/m^2)). A gain of 200 is used in the 
amplifier/filter stage. This translates into a calibration 
coefficient of .047425811. 
 

PSYC-10m: DOWN!!! 
 
	The 10m psychrometer went dead sometime last night 
during the network crash. Time of death is unknown. 
 
	The tower was lowered and psychrometer was 
replaced. Old unit was 35, new unit is 36. One should 
remember that 36 was the psychrometer with the high 
wet bulb temperature. The wick was changed. 
 
	Time at tower was 19:30 to 20:00 GMT. 
 

10m Psychrometer - Twet still bad 
 
	After changing the psychrometer at 10m, the 
twet is still about .2 C high. This problem will 
be with us until we get a new psychrometer. 
 

Level output turned on. 
 
Marigold 114 and 115 are now connected to the X(pitch) and Y(roll) outputs from the 
level display (hopefully, respectively).  Steve S. is about to start archiving. 
The output is +/- 0.5 V for both, which corresponds to an angle of +/5 degrees 
(actually, only +/-4 degrees), however they are wired into a +/-5 V inputs on the 
amp/filter board.  There isn't a need to change the amp/filter inputs since the 
resolution is still adequate to resolve .01 degree. 
 

USSR T1 calibration changed 
 
The sign of the calibration for t1.4m.ussr was changed to negative at Michael's 
request. 
 

ATI #3 still spiking a bit 
 

15m.prop 
 
	The speed information at the 15m 
height has gone bad again. This occurred 
at 3:20 GMT. At this time, I do not see any 
obvious reasons as to why it has gone bad. 
Maybe the fix last time was not the real 
problem. I will have Charlie bring up the 
spare wind board. 
 

Tsoil Probes 
 
	After generating plots for the tsoil 
probes, they appear to be backwards, ie, 3cm 
unit is the 10 cm unit and versa. This was 
noted back at time of installation; however, 
nothing was changed. I'll speak to Charlie 
tomorrow. 
 

prop-15m 
 
	The 15m prop came back to 
life! Looking at a time plot, the 
sensor speed stopped at about 4.2 m/s 
It came back on at approximately the 
same speed. We may have a loose contact 
where the speed encoder connects to 
the shaft wires. We'll have to wait and 
see. 
 

prop-15m 
 
	As the wind speed dropped below 
4 m/s, the 15m prop speed slowly died. 
I do not think it is the encoder since 
the output is digital. If we were to 
loose signal, it should be at the high 
speeds. 
 

HOT-WIRE 
 
	Favorable winds called for 
hot-wire operations. Started collection 
data at 16:20 GMT. There were no problems 
getting the instrument running. I would 
recommend after turning everything on and 
confirming things are working ok in the base 
that the bridge adjustment be reset. This 
way the electronics has a chance to stablize. 
 
	I was not successful in running 
Steve's 'ql.sh' routine to verify data on tape. 
The program would boom out with a 
"log10: SING error" followed by a 
"ERROR  5 in AGNUMB - EXPONENT TOO LARGE". 
I went ahead and started recording on tape 
anyway. 
 
	When starting a new tape, the first 
7 or 8 messages from daisy seem to get 
written to tape; ie; the light blinks. 
After that there is a 10 to 15 second delay 
before things start going again. I assume 
it has something to do with the exabyte 
wanting to put a header file at the 
beginning of tape. Maybe this is why S.O.'s 
program failed. I'll talk to Charlie about 
it. 
 

Spare PYG 
 
	Since we had a spare PYG and 
the response from the two other units 
is questionable, I decided to install the 
third unit on the sawhorse. It is on 
the south end looking up. The necessary 
configuration files have been changed so 
we can monitor this sensor. The calibration 
information has also been entered in  
preprocess.config in directory config. 
NOTE: Other preprocess.configs will not 
have this change unless done by the 
owner. 
 
Channel - 110 (113 physical) 
ADAM - cosmos 
sensor id - 26417F 
calibration - 4.79 microvolts/(W/m^2)) 
position - incoming radiation 
name - pyg.spare.rad 
 

10m twet still reading too warm. 
 

pyrgeometers rewired 
 
Found that the wrong leads of the cables from 
the pyg's were connected to the analog channels. 
Signal was being read across the thermister 
rather than the thermopile. Rewired analog  
connexctions to read termopile + thermister. 
 

Gary says to get the oil changed in brown crewcab 
 

4m.psyc water bottle filled 
 

t.4m.uw, sonic.4m.uw restarted 
 

ATI sonic thresholding and zeros were reset today. 
Between noon and 3pm MDT Ski and JMW reset thresholds 
on ATI.4m.u  ATI.7m.u  ATI.13m.v  ATI.13m.w. For the 
4m.u we also put on zero wind box and manually reset 
the zero level on the pot. However, there was 
about a 5m/s wind at the time. No zeroing was done  
on the ASTER computer. Ski says the 4m.u board is 
noisy, aand may quickly give us spikes again if 
the winds are stronger. 13m.w had a lot of noise before 
thresholding,  and an apparent bias. Now only a bias 
is obvious. Tom suggests that if the winds are light 
tomorrow that we put the zero box  on all of the 
rethresholded paths and record the bias levels 
using xstrip. 
 

Rebalanced hot wire and set back to operate 
at ~20:35. 
 
 

Wim, Joost, Tom and Steve at uw tower from 
~20:50-22:20.   
 
Wim and Joost moved the IR 
electronics box from the SW face of the 
tower to the E face.  It was originally 
a little less than 1 m above the sonic boom 
(4 m) and after moving, it is a little more 
than 1 m above the boom. 
 
Tom and Steve checked out the AIR fast T at 
4 m on the uw tower and found that it had 
been in the `null' position. 
 
 

Checked data and found 
some spiking on u component of ati 
sonics at 7 and 13 m.  However, 
wind is from the SE, so no point 
in adjusting thresholds to accomodate 
this condition. 
 
2m wet bulb temperature looks better 
now that Steve worked on it before 
leaving yesterday. 
 
 

Gerry used the Nikon theodolite, oriented by 
shooting the sun, to get the azimuth of the 
prop-vanes and sonic anemometers: 
 
Level	Props         UW        ATI       NOAA 
-------------------------------------------------- 
1 m	117.35.20   
2 m	117.36.50   
4 m	117.36.50  116.15.55  117.39.52  115.21.38   
7 m	117.36.50  115.38.00  116.37.18 
10 m	115.58.20 
15 m	115.58.22             117.39.08 (@13 m) 
 
 

IR sensor removed 
 
Wim was up the UW mast from 00:00 to 00:30 to take his sensor back to 
the lab and thence to The Netherlands.  A fast T cal was also done at the 
tail end of this period. 
 

Level changed to 13 m 
 
The level system was disconnected for the last hour, but has just been  
turned back on and switched from reading the ATI sonic at 7 m to the 
ATI at 13 m. 
 

Sonic levels adjusted 
 
uw.7, AT was raised slightly 
 
ati.13, U1 was raised, U2 was lowered (I think) 
 
ati.7, V1 was raised, U2 was lowered (I Think) 
 
I don't think these changed the zeros, though ati.13 U is possible. 
 
This was done during the afternoon (1430-1600 local) today - Steve 
was at the masts 
 

noaa sonic is stopping intermittantly 
 

t.13m.ati replaced and calibrated 
 
Cal counts are: 
4000 - 7172 - 3982 - 7143 - 3950  (delta ~ 3175)  (should be 3277) 
3792 - 6962 - 3772 - 6945 - 3752  (delta = 3281) 
3672 - 6847 - 3665 - 6842 - 3656  (delta = 3280) 
 
These values were obtained by switching from operate to cal to oper to cal to oper staying 
at each position 2 seconds (only 1 sec for the last reading). 
 
 

noaa sonic still intermittant 
 

v.ati.7m still looks bad 
 

Prop reconfiguration 
 
Because the prop which was at 7m (W004) has been acting up (and because 
I broke it's propeller), it has been moved to 1m.  The prop which was at 
1m (W001?) has been moved up to 7m.  
 
In addition, it was found that the bearings on W003 (4m) are rough and 
may have contributed to the speed drop-outs.  The spare prop (W007?) will 
be put in its place.  Thus, in a few minutes the arrangement should be: 
15 m  W006 
10 m  W005 
 7 m  W001 
 4 m  W007 
 2 m  W002 
 1 m  W004 
 
Since the alignment of the 1 m and 7 m booms differed by only 30 seconds 
of arc according to the theodolite measurements, the direction was not 
reset for W001.   
 
W007 will be programmed with W003's pitch and direction. 
 
 

prop at 1m died during the night - 
this one had been at 7m. Could be temperature? 
This is prop ser. #4 
 

Level changed from 13m to 7m 
 
Turning power off while changing the cables caused daisy to crash.  Power was rewired 
for the level circuit to raw power, which hopefully will prevent this in the future. 
 
The level output looks strange - X is 0 and Y is offscale (for both 7m and 13m).   
This should be looked at further sometime. 
 
 

Prop at 1 m back after power cycling 
 
This was done about an hour ago.  Simply disconnecting the serial cable and reconnecting 
appeared to bring the prop back to life.  (Recall that this is the unit which kept on 
crashing at 7m - maybe we should cannibalize the old 4m (W003) for an HC11 board to  
keep this running better.) 
 
 

Playing around with v.ati.7m triggering 
 
The received wave on VR2 (on the top of the board) is having trouble.  There are a weak 
positive-going, a rather strong negative-going, and a strong positive-going half cycles. 
Currently, it is triggering on the strong +, and appears to have a wind speed bias of  
20 m/s.  The best point appears to be the strong -, but the sonic would have to be rezeroed, 
and the wind speed is now strong enough (6 m/s) to make that difficult).  I will now reset  
it to the weak + and hope the signal improves. 
 
The signal got better, but didn't appear to be a function of triggering.  Probably, 
triggering on the strong + was best, since the wind values appear to be a bit low. 
The winds are too strong to be able to detect the change of one wave ~= 1 m/s.  Zero  
should be checked the next time winds die down. 
 
 

Prop at 1 m has new HC11 board 
 
The HC11 board from the old 4m prop (W003) was just put in the body of the old 7m prop  
(W004) which was at 1m after the swap yesterday.  New coefficients were loaded in, and 
the boom alignment set to 297.6 (is this true or magnetic?). 
 
Hopefully, this will stop the crashes which have been happening with this prop #4. 
 
 

annemometer offset errors 
 
looking at the propvane traces, it's obvious that there 
are offset errors in direction at 1m and 7m. This must 
be due to the values we used for the boom alignment, 
since the offsets are identical for the 2 props. These 
two props had been reset in the last two days. We did 
not account for mag. declination when we did the boom 
alignment. 
 

Replaced 1m prop that had been broken and glued 
(marked with IV on the prop) with a new prop. 
There are no distinushing markings on either 
the prop or the box it came in. Prop was down 
for replacement at apprx 20:55 UTC. 
 

Balanced hotwire bridge at apprx 23:15 GMT 
 

the observed delta c values were 334  -225  -111. 
We entered these to ati_bias_calcs as 3.34, -2.25 and  
-1.11.  Not sure about these units. 
 
Bias calcs for 13m.ati: 
 
 
Enter the 6 present bias values: 
4127 
4089 
1760 
1760 
2151 
2395 
Enter u,v,w values taken with the zero chamber: 
0.0 0.48 0.27 
Enter number of raw samples averaged for zero winds: 
10 
Enter delta cu,cv,cw values from M mode: 
3.34 -2.25 -1.11 
Enter number of raw samples averaged for delta c: 
20 
Enter indicated speed of sound: 
342.60 
Enter number of raw samples averaged for c_ind: 
10 
Enter Td, Tw, P (C and mb): 
18.95 9.10 828.7 
The corresponding humdity is:     4.78672 g/kg 
The calculated speed of sound is:     342.965 
The dc_dN factor is:     2.35251E-02 
The absolute sound speed bias correction is:   78 
The delta c bias corrections are:   1420  -956  -472 
The zero wind bias corrections are:   0  102  57 
New biases are:   2785  2747  2896  2692  2758  2888 
 

After zeroing 13m.ati, the w component improved 
somewhat, but still has a noticeable bias of approx 
-0.5 m/s. Since it seems that this is not the 
result of a true zero bias offset (we put the  
zero wind box on the w-axis twice and got the 
identically same offset value of 0.27 m/s, so we  
our correction was right) the conclusion is that 
it must be coming from somewhere else. Could 
the sonic have a big enough tilt to give this 
big of an offset? Seems unlikely.  
 

10m twet is still reading high 
 
 

Checked all tower sensors this morning, and all 
appeared to be working well. 
 

PROPS- 1m & 4m 
 
	After discussions with Tom and 
looking at the logbook notes, it appears 
that the boom angles used for the 1m and 
7m props were the new angles shot by 
Gerry. No other angles for other heights 
were changed. 
 
	OLD 	NEW 
1m	304.7   297.6 
4m	304.6	297.4 
 
	This explains the angle error. 
Since conditions are good now, we will 
have to wait until later to correct. 
The correction will be to use the old 
angles (less work!) 
 
	The new propeller on the 1m sensor, 
change done on the 14th, was never calibrated 
in the tunnel. The pitch angle used is the 
pitch for the number 4 prop, 294. 
A call will be made to Boulder to try and 
get numbers 7 and 8 up here. 
 
 

PROP-1m 
 
Since around 00:00 GMT, the 1m prop 
has gone down. Jim tryed recycling 
power; results not good. Will examine 
it tomorrow. 
 

PROP - 1m 
 
	Based on time plot of winds, 
the 1m sensor came back to life at 
approximately 03:10 GMT. Seems to 
working ok now. 
 
 

HOTWIRE - started 
 
Hot wire was balanced, the probe exposed, and  
restarted at 16:32 GMT. Two broken T's were 
brought in. Presently, SS and JB are walking out to 
replace the two T's. The pressure signals look 
suspiciously like they are picking up dynamic 
pressure effects, especially on the 4m probe. 
 

ATI sonics are spiking in the u components, 
especially when wind speeds are greater than 
15m/s. 
 

PAM - station 7 
 
	Worked on PAM # 7 between 23:00 
and 00:00 GMT. Found the antenna was loose. 
Added wind/rain board to box. Transmit time 
looked good, length of transmit looked good. 
Madam had some problems coming up after 
reset. Could not track problem to any 
specific item. Left station running in an 
operational mood. 
 

LEVEL SIGNAL 
 
	Tom changed the level signal 
from 7m to 13m at 00:16 GMT. 
 

Steve and Tom at ati tower after about 
16:15 to work on 4 m pressure sensor. 
The hose connection at the pressure 
port was found to be defective.  Steve 
will remount it and RTV both ends of 
the hose. 
 
 

Reg Hill, Rod Freilich, and Jim Wilson 
arrived to set up scintillation measurements. 
They began to set up the northern end of 
their path near the Daisy shelter about 17:45. 
 
 

PROP - 1m 
 
	The 1m prop has gone down again 
at 16:30 GMT. Will try to look at serial 
cabling. 
 

Fixed 4m pressure hose and reinstalled 
at ~20:45.  Then checked connections at 
both ends of the hoses at all three  
levels with the spray can, finishing 
about 21:15.  All levels look ok with 
this test and the 4m signal appears to 
be improved, that is, it has about the 
same magnitude as the other levels and 
is not obviously correlated with wind 
speed. 
 
 

Reset parameters in prop-vanes  
at ~20:25 
 
     serial #   azimuth    prop  prop pitch   
    ---------  ----------  ----  ---------- 
ht   old new   old    new         old  new 
---  --- ---   ---    ---         ---  --- 
1 m   3   3   297.4  304.7  x     294  295* 
2 m   2   2   305.2  305.2  2     290  290 
4 m   2   7   297.4  304.6  3     296  296 
7 m   1   1   304.4  304.4  1     291  291 
 
*In anticipation of using prop#8 when 
it arrives. 
 
 

WPL - SCINTILLOMETER 
 
	Spent the late afternoon 
interfacing the WPL scintillometer 
into ASTER. There were no major 
hassles, only operator errors. 
All signals are analog and are interfaced 
through marigold. 
Below are the channel assignments, 
sid, did, and calibrations assigned 
along with the amplifier/filter 
information. 
 
AMP/FILTER 
 
   channel     gain    filter  sampling 
ADAM	phys 
 
107	100	1	none	1 hz 
106	101	1	none	1 hz 
113	102  1	none	1 hz 
 
 
CONFIG PARAMETERS 
 
  sid              did           calibration 
 
marigold:107  cn2la.wpl (800)    .0001525925 
marigold:106  cn2lsr.wpl (801)   .0001525925 
marigold:113  level.wpl (802)    .0001525925 
 
ARCHIVE LOCATION 
 
/home/aster/raw_data/noaa/wpl 
 

HOTWIRE - STARTED 
 
	The hotwire archiving was 
restarted at 01:21 GMT. 
 

PROP - 1m 
 
	The propeller on the 1m sensor 
was changed to number 8. The old propeller 
will be number 9. This occurred at approximately 
15:30 GMT. 
 

Lowered psychrometer mast about 17:30 
to replaced wicks and fill bottles. 
Replaced 10m sensor 36 with 35. 
 
Raised it back up about 19:30.  Found 
that the new psychrometer (35) had a 
PAM rom, so moved 7m sensor to 10m. 
 
 

USSR - down 
 
	Stopped archiving ussr sensor at 
19:57 GMT. 
 

PAM  
 
	Spent a part of the afternoon 
looking at PAM stations. Station 3 still 
has a psyc. problem; could not determine 
if it is the psyc. or serial board. Tryed 
another serial board without any luck. 
 
	Got the psyc. at station 4 running 
by resetting the serial board. Also moved 
pin 8 to pin 13 on the GIB cable. 
 
	Communication between madam and 
handar at station 7 is bad. It was raining 
so I could not change any cards. 
 

USSR - netrad 
 
	The ussr net radiation sensor 
was down most of yesterday. The differential 
input signals were shorted during that time. 
The instrument was installed at 14:45 GMT 
today. 
 

Instrument inventory this morning shows 
all instruments appear to be performing 
satisfactorily. 
 
 

USSR - started 
 
	Started ussr archiving at 18:47 
 

1 m psychrometer is suspiciously 
warmer than others.  In particular, 
see the record for JD293, 0000-1500, 
 
We swapped 1 m and 2 m sensors  
between 19:45 and 19:55 to check 
further and decided that it still 
looked phoney.  Steve will put its 
ROM into the new sensor meant for 
10 m and we will put it back at 
1 m.  (We returned the 2 m sensor 
to its original position.) 
 
New sensor installed at 1 m at 20:15. 
The temperature profile now looks 
more reasonable. 
 
 

USSR - stopped 
 
	Archiving of the ussr sonic was 
stopped at 00:39 GMT. 
 

USSR - sonic up 
 
	Started archiving ussr data at 
15:37 GMT. 
 

Moved psychrometer to 15 m. 
 
We were at the towers from 16:15 
to 17:45 to reconfigure the psychrometers. 
We moved the 10 m psychrometer back to 
7 m, moved the 1 m to 2 m, and moved the 
2 m to 15 m. 
 
Steve modified archive_config to archive 
the 15 m psychrometer data (marigold 207) 
in psyc/psyc.15m. 
 
 

USSR - stopped 
 
	Stopped archiving of ussr sensor 
at 00:58 GMT. 
 

USSR - sonic up 
 
	Archiving of sonic data started 
at 15:25 GMT. 
 

Instrument inventory shows most channels 
fairly good. 
 
4 m ati sonic has ~ 3 m/s offset on u channel 
compared to other ati's. 
7 m ati sonic has ~ 3 m/s offset on v channel 
compared to other ati's. 
 
 

Installed Gill sonic anemometer on Soviet 
tower at 4.2 m height.  It is pointing 
nominally to the NNE.  The installation 
was from ~19:30 to ~20:30. 
 
 

RADITION CHANGES 
 
	Since today was a day of confusion 
and changes to the operation configuration, 
changes were made to the radiation parameters. 
 
	The spare pygeometer was removed from 
the system to make room for the thermistors on 
the pyg.in sensor. Below is the critical information. 
These parameters come through cosmos. 
 
   channel       gain    filter       item      cal 
phys.   ADAM 
 
110     5(b)      1       .5      pyg.in.dome   - 
111     4(b)      1       .5      pyg.in.case   - 
 
 

PSYC - 1m 
 
	The 1m psychrometer was installed 
around 19:00 GMT. Sensor id number 51. 
 

Sodar backed up. 
 
Sometime ago (the last plot was at 0900 today, though I could swear that it was still 
writing disk files) the sodar's disk filled up.  I've just backed it up onto tape which 
restarted it.  This may be bad since we were doing Wyngaard's balloons today. 
 
 

Level electronics switched from 
13 m to 7 m at ~22:45.  Note that 
the level output is not being 
recorded because these analog 
channels are being used for the  
Gill sonic. 
 
 

soviet sonic removed from aster 
 

soviet net radiometer removed 
 

PYG - temps 
 
	The gain settings for the output 
signals from the pyg. temperature sensors, pyg.in.dome 
and pyg.in.case, were changed from a gain of 1 to 10 at 21:26 GMT. 
These signals are cosmos analog channels 110,111. 
 

NEW NET 
 
	A spare net radiation sensor was 
added to cosmos. It's input is on channel 
108. Gain setting of amplifier is 100, sensor 
serial number is 90079, calibration is 13.3 W/(m^2)mv. 
Calibration used in preprocess is .020294809. 
 

profiler tuned up this afternoon by Jim Jordan. 
The north beam was completely dead, and has been 
for several days at least, maybe for more than a week. 
This was fixed. Also changed the high resolution mode 
from 60m to 100m. This gave much higher height coverage 
by the high mode. The profilers were also releveled. It 
appears that they were pretty far from level as the 
feet sank into the ground. This would have made any of 
the data questionable. JJ also noticed ground clutter 
in the lowest gate of the west beam, biasing the wind 
toward zero. 
 

NOAA SONIC DEAD! 
 
	Due to an unfortunate accident, the 
noaa tower crashed today, ie, took at dive into 
the ground. Nobody was hurt; however, the sonic is 
no longer operational. It will be removed from 
archiving. For more details, talk to Jim. 
 

PAM - station 5 
 
	Cathy has been working on station 5 
to get the radiation sensors running. Unfortunately, 
we did not have the correct power supply card in the 
PAM station. The sensors were checked out by pulling 
the supply card from station 4. Jim agreed to leaving 
the radiation sensors running instead of the pressure 
sensor of Carmen Nappa. We will make a request for a new 
power card from Boulder. 
 

LEVELS -  7m to 13m 
 
	Level signals were changed from 7m to 13m height. 
Changed at 1:16 GMT. 
 
 

Instrument check summary: v.7m.ati has noise; u.4m.ati 
has a negative bias of 2m/s; w.13m.ati haas a negative 
bias of -0.3m/s; uw.7 has spikes simultaneously in all 
three channels. 
   Pressure intercomparisons shows best agreement at 
13m between 13.new and b.13.new; the drift in a.13.new 
is at least 4 times larger. The 7.new sensor shows the 
largest drifts of all --- prehaps it's a heating 
effect, since the drifts on days 304/305 seemed to be 
worst at 14-16 UTC both days. Daily plots of new and 
old PAM pressures show some occasionaly big 
discrepancies, on order 0.15 mb/hour. 
 

PAM RADIATION SENSORS 
	The radiation sensors installed on the PAM (10/30) 
have the following serial numbers: pyg 246671F3, PSP 2635??F3, 
				   Rnet 90082, Everest 1042. 
 
 
 
 

Instrument Status, 1700 GMT 3 Nov: 
 
    Sonics: All ATI's are dead from ice and snow 
            Both uw's look ok, with occasional spikes 
 
    T's   : All are dead 
    q     : Looks good 
    p     : All pp's, new.p, and old.p look good 
    psyc's: The 15m  speed is out; the 1m T seems to 
             have a 2 deg warm bias. We may go out  
             today and switch the 1m/2m T's just 
             to maake sure. 
    rad   : covered with snow 
 

SCINTILLOMETER - level signal 
 
	The level signal for the scintillometer was 
reconfigured into ops6. Looking at the signal, it appears 
the gain setting for that analog channel was never set back 
to the orignal gain, ie, 1. The channel gain was changed for the 
GILL sonic test. Gains for that instrument were 2 with a 5 volt 
offset. I donot see the need to reset the gain since the problem 
has been noted. 
 
	This does bring up the question about our sonic level 
signals. Since they also were on the GILL sonic channels. Looking 
at xstrip of these signals, they appear ok. 
 

All sensors have heavy riming, particularly 
the radiation sensors, prop-vanes and sonics. 
I freed the 2m prop-vane and brushed some 
loose ice crystals off the radiometers, but 
all props and radiometers are still rimed. 
 
 

Rime has begun to melt off the instruments. 
UW sonics appear to be free of spikes, but 
ati's are still spiking. 
 
 

installed ozone sensor in chem shelter, 
on marigold channel #112 at aprox. 23:15 
 
 

Instrument status: 
 
   sonics: 13m.ati.w has considerable spikes, but 
           probably still useful. 
           4m.ati.w does not show spikes as it did 
           yesteerday, but the signal looks noisy 
           in comparison to the 4m.uw.w. 
           7m.uw.u,v,w have spikes, but probably 
           useful. 
 
   pp's, t's, q, propvanes aand psychrometers all 
           look good. 
 

Ozone data 
 
Went out to the shelter to check ozone sensor. 
Nov 14 10:30     35 ppb 
Nov 14 13:12     37 ppb 
Nov 14 14:05     39-40 ppb 
 

PSYC - 4m, 15m 
 
	Water was added to the 4m and 15m psycs. 
This was from 22:00 to 23:00 GMT. Instead of lowering 
the tower, Tony climbed up and pulled the psycs out. 
This was not the easiest job; however, it worked. 
 
 

SCINTILLOMETER - removed 
 
	NOAA removed the scintillometer this morning. 
Therefore data coming in on marigold channels 106, 107, 
and 113 are to be considered bad from 19:00 GMT.