CHATS: whatever Messages: 32 Entries..

Serial numbers logged during tear-down of horizontal array:

Hot films, west to east:  SF4, SF5, SF2, SF7, SF3
(I'm not sure where I read these numbers, likely from the BNC cables)

Lower array S/N's:

Pos	Sonic	Licor
1b	0367
2b	0672
3b	0855	1163
4b	0538	0813
5b	0366	1164
6b	0378	1167
7b	0677	1166
8b	0376
9b	0121

Upper array S/N's:

Pos	Sonic	KH2O
1t	0377
2t	012?
3t	0537	1133
4t	1124	1392
5t	1119	1389
6t	0800	1391
7t	1121	1258
8t	0539
9t	0247

Here's the list of the serial numbers of the instruments as we took them
off the 30m tower.  

Also, we took a measurement of top of the 14m boom.  It was actually
located 14.15m (to the top of the uppermost wood block).  I think we
should enter this too.

Thanks,

Ned


instrument      serial #
----------      --------
 1.5m CSAT      0673
      kh2o      1393

 3.0m CSAT      0674

 4.5m CSAT      1120
      kh2o      1390

 6.0m CSAT      0119

 7.5m CSAT      0540
      kh2o      1394

 9.0m CSAT      0536

10.0m CSAT      0671
      kh2o      1101

11.0m CSAT      0364

12.5m CSAT      0743


14.0m CSAT      1123
      kh2o(h)   1397
      kh2o(e)   1392

18.0m CSAT      0738

23.0m CSAT      1117
      kh2o      1525

29.0m CSAT      0744

Removed CDC instrument from  30 m tower this morning.

The Duke/Avisaar helicopter flew photo, pr, and data flights this morning.

1jun07  10:40-12:45  Tower Climbed

Removed scintillometer, cables, and 787 cable ties +/-50.

Initially the winds were very light from the north or non-existent.
By the end they had shifted toward the south.

1jun07  10:05 - 10:30  array climbed

Cut off tail of pressure port tubing to help lowering the array
tomorrow without impacting the tree.
Also Don went up to double check the location of the leave area
index measurement marks.

31may07  tower climbed 11:42-12:18

Removed scintillometer electronics box.
Because of favorable winds, and I didn't want Don L.
to have to tail the heavier more awkward optics sensing
head, we decided to leave it on the tower until another
day.

The orchard will be sprayed with Asana XL on Wed night. 

No orchard entry for 12 hours and significant precautions for the following
24 hours (total of 36 hours). Precautions include washing, not rubbing eyes,
long sleeves etc. http://msds.dupont.com/msds/pdfs/EN/PEN_09004a2f800068f1.pdf
give the Material Safety Data Sheet. 

Active ingredients are:
Esfenvalerate (known as)
(S)-cyano (3-phenoxyphenyl)methyl(S) -4- chloro-alpha-(1-methylethyl)
benzeneacetate (8.4%)

Ian Faloona's formaldehyde instrument was installed in the trailer today. It
was too windy to place it on the PAM tower by base and so John and I will do 
it when the winds are becalmed. Ian will return with additional equipment that
is still being worked on so it will be some days before data is taken.

Ian is from UC Davis.

21may07 11:15 - 12:50  Tower Climbed

Branches trimmed.
The breezy conditions were causing some branches to blow into the 9m trh,
and some other stuff.   Clipped these, and hopefully didn't 'clip' one
of the hotfilm wires at same time...

14m kh2o head swapped....see entry 274

19may07 10:40 - 11:20  Tower Climbed

Scintillometer adjustment / data bad
------------------------------------
Anurban and Dawit downloaded the data with Erik, the student from Davis
who is supposed to periodically grab the readings.
However, the data was bad.
At Dawit's suggestion the dip switch settings were adjusted to increase
sensativity.   When we tried covering the optics to sample the background
readings, they were too high indicating excessive gain.   Meanwhile,
they had tried all the standard settings but got either insufficient signal,
or too high sensativity..
Jan is emailing Scintec about the situation.
Likely problem is that the receiver tower on the other side of the
orchard is too low and the signal is being obstructed by trees.
There could be a polarity issue, but it is unknown if that is even
possible.   The apeture is apparently 10-degrees, so wobble in the boom
could be a factor ultimately.
The students went home today, and Jan is considering his options. 

19may07 10:40 - 11:20 west tower climbed

IR camera had been taking 6-min pictures.
Jan instructed students to download data,
turn camera off and bag it to prevent
potential water damage.

1445-1505 Andreas tower climbing to 14m (butanol refill).

16may07 9:45-10:40 and 12:40-13:00  Array, West Tower, Climbing

Swapped IR camera media.
Took extra long because their cable didn't work and the new
pcmcia card didn't work at first.   Jan reformatted it back
at his motel to FAT instead of FAT32 and it worked.
Put new card back in at ~13:00 with 6-min photo capture.

ACD is storing some good sized containers and boxes in the trailer. These boxes
are marked with a red X that says 'ACD' on it. We expect these will not be there
for teardown based on their schedule but now you know.

Completed 1400LT, 15 May 2007

15may07

at 4:15am, the 3rd scintillometer temporarily setup on Stevenson Bridge road
was stolen.   The only part taken was the large optics head, and the cop thought the thief assumed it must be a telescope.
Jan said it is a $35k piece of equipment.

CPC measured as follows...
see entry 199...

Scintillometer lens center at ...
see entry 217...

The web cam was measured at 11.755m agl on the central tower. See earlier 
web cam entry for details on the actual move (entry #212).

14may07 11:50-12:45 Tower climbing during ops, light north winds
	Measurements of cpc, scintillom stuff.
	Removal of sodar repeater.

Helo Ops today, roughly beginning at 12:15

12may07, 15:30 day-before ops begins

The Kleissl system was installed at ~20.5m on the tower
mid-way between the 18m and 23m sonics.

Data Ingest going down sio cable to dangling 232-port
	that Jan uses with his laptop to download data. 

Power	for scintillometer is tee'd off at the beacon,
	and goes back down roughly 15m to the device.
	Jan said it's load is ~12W.
	We did not measure actual voltage or load.

Heights	2.37m from top of Scin.-boom above top of 18m sonic boom.
	18cm from center of optic window to top of Scin.boom.
	15cm from top of Scin.-boom to top of its elect. box
	Box Dim.= 18cm out, 20cm parallel to south leg of tower.
	
13may07 16:40-17:05	Tower climb during ops, wind from north
	Swapped scintillometer electronics box.
	The previous box was for a different sensing head.

12 May 1200-1600LT Kleissel IR Camera at the top of the array. West corner.

Web cam on array moved to full array height, central array tower at 1700LT.
Oriented in slight downward position. 

ACD tube installations (Golem/John on tower) completed 1220LT. Profile 
at the following heights: 1.5, 6, 9, 11, 14 and 23m. - completed 1200LT. 
Tubes are ~ 0.7 meters out on boom with a small webbed intake of ~ 5cm
diameter. Some additional tubes are at these heights but at the tower rather
than on the booms.

Tubes were pulled from 1100-1220LT.

The magnetic declination for the CHATS site is 14 deg 43' E.  Determined from 
the NOAA web page: 
http://www.ngdc.noaa.gov/seg/geomag/jsp/struts/calcDeclination
for 38.5 deg N, 121.85 deg W.

Sorry, Tom, one big message here, since its been a long day:

Started the day by initiating a backup of the entire dataset from isff1 to isff2
Took soil sample at 0900
Pulled hftower's Pocketec to begin backup
Pulled up the horizontal array between ~1040-1150 (west side first)
(bent the yoke for mounting 6b in the process)
From ~1230-1410 replaced 6b's yoke and secured the array with ratchet straps,
etc.
Went to lunch
From ~1525-1710 moved towers on central sensors up.
From ~1730-1820 put guy wire batteries back (after charging in base)
Also during this period drilled weep hole in hftower and reinstalled Pocketec
In base, continuing to backup disks
Changed to ops7.

To begin the p' sensor install, I climbed at various times between 1445-1645.
The 11m sonic was tilted up from ~1445-1530.

Steve and Keith adjusted and re-measure guywire tensions as follows:

	East Array	West Array	Center Tower
---------------------------------------------------
NW	475 		450		425
NE	500		400		400
SE	550		350		400
SW	475		450		375

Jan Kleissl plans to install his scintillometer on the 30 m tower.  We
are measuring 4-component radiation at a height of 16 m, so we would
like to minimize the influence of the scintillometer as much as
possible.  The influence of scintillometer on the radiation measurements
will decrease with the cosine of the angle from the zenith at which 
the instrument is seen by the radiometers and with the square of the distance 
between the scintillometer and the radiometers.

Let z be the height difference between the radiometers and the
scintillometer and x be the horizontal spacing between them, roughly the
length of the radiometer boom.  Then the cosine of the viewing angle is
z/sqrt(x^2 + z^2) and the distance between them is sqrt(x^2 + z^2).
The relative influence at different mounting heights is then

z/(x^2+z^2)^1.5

The radiometer boom is roughly 1 m long.
The maximum influence occurs at z = x/sqrt(2) = 0.7x, where the relative
influence is equal to 1/(sqrt(2)*1.5^1.5) = 0.385

The influence is 10% of its peak value at z = 5 m or a height of 21 m.  

There are sonics at heights of 18 m and 23 m, so halfway between them
would be 20.5 m, where the influence is 12% of its peak value.

Andreas Held is installing his particle counter at the 14 m sonic.
According to Andrew, he can place it a "meter or so" above or below
the sonic, so we should put it as far below as Andreas thinks feasible.
Mounting his instrument at the height of the boom would have an
influence of 46% of its peak value.  1 m lower at 13 m would place it 
3 m below the radiometers and reduce the influence to 25% of its peak value; 
2 m lower at 12 m would reduce the influence to 15% of its peak value.

data_dump -d (dsm) -s (sampid + 1 for calibrated data) -p sock:localhost

For addition to the logbook:

As of Mar 19, 19:36:28 UTC we're recording both
sensor data and photos on the new 720 Gbyte USB2 disk,
/media/isff1.

All previous CHATS data, and photos have been copied to it
from /data.

Current plans are to keep /media/isff1 permanently
mounted on the aster system.

A 400 Gbyte disk should arrive today.  That will
be the backup disk.  The plan is to do intermittent
copies to that disk, and bring it back to the hotel
for safe-keeping.  With two backup disks, one could
be brought back to Boulder from time to time.


Gordon