CSI below-canopy flux system 

Installed at Willow Creek on 14 May 2002

'The following sensors are measured at 10 Hz:
'CSAT3             three dimensional sonic anemometer
'CS7500 (LI-7500)  open path infrared gas analyzer (co2 and h2o)
'HMP45C            temperature and relative humidity probe
'FW05		   Fine Wire Themocouple
'Q7.1 		   Net Radiometer

Sensor height: about 2m above soil surface

Flux computations: Computed by CS5000 data logger using program written by CSI.

Data output: 10 minute intervals

;Data format (columns)
; 0 year 
; 1 jday
; 2 hhmm
; 3 Fc_irga
; 4 LE_irga
; 5 Hs
; 6 H
; 7 tau
; 8 u_star
; 9 Uz_Uz(1)
;10 Uz_Ux(1)
;11 Uz_Uy(1)
;12 Uz_co2(1)
;13 Uz_h2o(1)
;14 Uz_Ts(1)
;15 Uz_FW(1)
;16 Ux_Ux(1)
;17 Ux_Uy(1)
;18 Ux_co2(1)
;19 Ux_h2o(1)
;20 Ux_Ts(1)
;21 Ux_FW(1)
;22 Uy_Uy(1)
;23 Uy_co2(1)
;24 Uy_h2o(1)
;25 Uy_Ts(1)
;26 Uy_FW(1)
;27 co2_co2(1)
;28 h2o_h2o(1)
;29 Ts_Ts(1)
;30 FW_FW(1)
;31 Rn_Avg
;32 Ux_Avg(1)
;33 Uy_Avg(1)
;34 Uz_Avg(1)
;35 co2_Avg(1)
;36 h2o_Avg(1)
;37 Ts_Avg(1)
;38 FW_Avg(1)
;39 rho_a_Avg
;40 h2o_hmp_Avg(1)
;41 t_hmp_Avg(1)
;42 rh_hmp_Avg(1)
;43 press_Avg(1)
;44 tc_ref_Avg
;45 wnd_dir_compass(1)
;46 wnd_dir_csat3(1)
;47 wnd_spd_1(1)
;48 wnd_spd_2(1)
;49 rslt_wnd_spd_1(1)
;50 rslt_wnd_spd_2(1)
;51 std_wnd_dir_1(1)
;52 batt_volt_Avg
;53 rho_a_Std
;54 h2o_hmp_Std(1)
;55 t_hmp_Std(1)
;56 rh_hmp_Std(1)
;57 n_Tot
;58 csat_warning_Tot(1)
;59 irga_warning_Tot(1)
;60 del_T_f_Tot(1)
;61 track_f_Tot(1)
;62 amp_h_f_Tot(1)
;63 amp_l_f_Tot(1)
;64 chopper_f_Tot(1)
;65 detector_f_Tot(1)
;66 pll_f_Tot(1)
;67 sync_f_Tot(1)
;68 agc_Avg(1)


Data acquisition notes (documented in WILCRK3.CR5):
----------------------

'Changed Time Series DATA TABLE: Number of records from 1000 to -1 which avails all avaialbe memory (after 
'other memory requirements are met)to ts data. (DataTable (ts_data,flag(8),-1) New filename=WilCrk2.CR5.  
'5/14/02 Set CSAT3 Const angle to -56 (head pointing at 304). Deployed system at Willow Creek
'WilCrk1.CR5 is derived from rt_mst_2.cr5 (see below). It was edited by Ed Swiatek on May 10,2002 so that it
'supports "Custom" Menu
'rt_mst_1.cr5 is based on 'c:\cr5000\programs\3d_li_eb5k1_1.cr5
'written by Ed Swiatek, CSI, 12 July 01
'    This file was edited in the field by RT on 7/24/01 according to instructions sent by Myron via email 7/23/2001 
'    Edited file was save as :RT_MST_2.CR5 - Also fixed the missing ")" problems found by Myron.

'Based on flx5k1_1.cr5.

' This CR5000 program measures turbulent sensors at 10 or 20 Hz.  The time series can be
'saved to a PC Card.  The CR5000 will also compute on-line turbulent fluxes from the
'measured data.  The flux table saves all the cross products that are required to rotate
'the on-line fluxes into natural wind coordinates in post processing following:
'
' Kaimal, J. C. and Finnigan, J. J.: 1994, Atmospheric Boundary Layer Flows, Their
'   Structure and Measurement, Oxford University Press, New York, 289 pages.
'
' Tanner, C. B. and Thurtell, G . W.: 1969, Anemoclinometer measurements of reynolds
'   stress and heat transport in the atmospheric surface layer, Final Report, United
'   States Army Electronics Command, Atmospheric Sciences Laboratory, Fort Huachuca,
'   Arizona.