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OzFlux_std_2024_CSAT3B_LI7500RS.CR1X
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'CR6 Datalogger
' The datalogger type listed on line 1 determines the default instruction set,
' compiler, and help files used for a program that uses the .DLD or .CRB program
' extension. These options can also be set using the Set Datalogger Type dialog box
' (CRBasic Editor|Tools|Set Datalogger Type).
' To do (IMcHugh):
' check all added measurements are in data tables
' put instrument order in constants and variables section in same order as the user-set constants and wiring
' The sign convention for the fluxes is positive away from the surface and
' negative towards the surface.
'
' Before computing online fluxes, the datalogger will introduce lags into the
' eddy covariance data to account for the fixed instrument delays. The lags are
' dependent on the instrument setting and/or the scan interval. Search for "Fixed
' inherent lag" and set the delay to the appropriate value. The raw data is not
' lagged.
'
' The site attendant must load in several constants and calibration values.
' Search for the text string "unique" to find the locations where unique
' constants and calibration values are entered.
'*** Unit Definitions ***
'Symbol Units
'degC Celsius
'degrees degrees (angle)
'g grams
'J Joules
'kg kilograms
'kPa kilopascals
'm meters
'mg milligrams
'mmol millimoles
'mol moles
's seconds
'umol micromols
'uSeconds microseconds
'V volts
'W Watts
'*** Search strings ***
'General -> Station-based user constants: "Station-based user constants"
' -> Other user constants: "General user constants"
' -> Scientific constants: "Scientific constants"
'VOLT116 -> User constants: "VOLT116 user constants"
'CSAT3B -> User constants and wiring: "CSAT3B user constants / wiring"
' -> Internal constants, variables and tables: "CSAT3B internal constants / variables / tables"
'LI7500RS -> User constants and wiring: "LI7500RS user constants / wiring"
' -> Internal constants, variables and tables: "LI7500RS internal constants / variables / tables"
'Soil moisture -> User constants and wiring: "Soil moisture user constants / wiring"
' -> Internal variables: "Soil moisture internal variables"
'Rain gauge -> User constants and wiring: "Rain gauge user constants / wiring"
' -> Internal variables: "Rain gauge internal variables"
'Soil heat flux -> User constants and wiring: "Soil heat flux user constants / wiring"
' -> Internal variables: "Soil heat flux internal variables"
'Soil temperature -> User constants / wiring: "Soil temperature user constants / wiring"
' -> Internal constants and variables: "Soil temperature internal variables / tables"
'Ancillary wind sensor -> User constants and wiring: ""
' -> Internal variables: "Ancillary wind sensing internal variables"
'Air temperature / humidity -> User constants and wiring: "T and RH user constants / wiring"
' -> Internal variables and tables: "T and RH internal variables / tables"
'Radiation -> User constants and wiring: "4-component radiation user constants / wiring"
' -> Internal constants and variables: "4-component radiation internal constants / variables"
'############################################################################
'############################################################################
' *** Begin user-customised station / logger / instrument constants and wiring ***
' -> Station-based user constants
Const STATION_NAME = "<YOURSITEHERE>_EC"
Const PAKBUS_ADDR = 1
' -> General user constants
Const NUM_DAY_CRD = 200 ' Unique value, number of days of flux data to store on a 16 GB CF card (44 days = 2 GB). This value will vary with configuration.
Const SDM_PER = 30 ' Unique value, default SDM clock speed.
Const ANALOG_INTEGRATION = _50Hz ' Slow sequence analog measurement integration time, _60Hz or _50Hz.
Const SCAN_INTERVAL = 100 ' Unique value, measurement rate 100 ms (10 Hz) or 50 ms (20 Hz).
Const OUTPUT_INTERVAL = 30 ' Unique value, online flux data output interval in minutes.
' -> VOLT116 user constants (constants only - wiring N/A, connection via CPI)
Const CDMVOLT116_1_SN = 4634 ' CDM-VOLT116 serial number
Const CDMVOLT116_1_ADDR = 1 ' CDM-VOLT116 CPI address
Const CDMVOLT116_1_DESC = "Mast_top_MUX" ' CDM-VOLT116 descriptor
' -> CSAT3B user constants / wiring (CR1000X -> note that CSAT and IRGA signals
' are combined at top of mast and brought down to logger on a single cable
' for tall towers; as such, wiring colours may vary for cabling used).
Const CSAT3B_SDM_ADDR = 3 ' CSAT3B SDM address
Const AZ_SONIC = 210 ' CSAT3B azimuth
'SDM-C1 SDM Data (green)
'SDM-C2 SDM Clock (white)
'SDM-C3 SDM Enable (brown)
'G SDM reference (black)
' SDM shield (clear)
'+12V power (red)
'G power reference (black)
' power shield (clear)
' -> LI7500RS user constants / wiring (CR1000X - as per CSAT above)
Const LI7500_SDM_ADDR = 7 ' IRGA SDM address
Const IRGA_SIG_STR_THRESHOLD = 60 ' Unique value - filter LI-7500(RS) data with signal strength < SIG_STR_THRESHOLD.
'SDM-C1 SDM Data (gray/blue)
'SDM-C2 SDM Clock (blue/white)
'SDM-C3 Enable (brown/brown)
'G SDM reference (black/black)
' SDM shield (white/bare)
'+12V power (red with white/red)
'G power reference (red with black/black)
' ground (green/not used)
' -> Soil moisture user constants / wiring (CR6)
Const NMBR_CS65X = 4 'Number of CS65X to measure.
Const CS65X_SDI12_PORT = C5 'Measurement port.
Const CS65X_1_ADDR = 1 'Address for this probe.
Const CS65X_2_ADDR = 2 'Address for this probe.
Const CS65X_3_ADDR = 3 'Address for this probe.
Const CS65X_4_ADDR = 4 'Address for this probe.
'Search for text "Duplicate above for additional probes." to add code for additional probes.
'C5 SDI-12 data #1 (SDI-12 address = 1-4) (green)
'G RS-232 Rx #1 (orange)
'12V SDI-12 power #1 (red)
' SDI-12 power #2 (red)
'G SDI-12 data/power reference #1 (black)
' Shield #1 (clear)
' SDI-12 data/power reference #2 (black)
' Shield #2 (clear)
' -> Rain gauge user constants / wiring (CR1000X)
'Note: for the CR6 and CR1000X, triggering conflicts may occur when a companion terminal is used for
'a triggering instruction such As TimerInput(), PulseCount(), OR WaitDigTrig(). For
'example, If the WindSonic4 Is connected To C3 on a CR1000X, C4 cannot be used in the
'TimerInput(), PulseCount(), OR WaitDigTrig() instructions. Hence, we put the pulse port at U3.
Const RAIN_PULSE_INPUT = P1 'Unique pulse input channel for tipping bucket.
Const RAIN_CAL = 0.2 'Unique multiplier for tipping bucket.
'U3 Signal (black)
'G Signal reference (white)
' Shield (clear)
' -> Soil heat flux user constants / wiring (CR6 - read calibration coefficients into memory on compile)
Const SHF_ANALOG_INPUT = 10 'Unique single-ended analog input channel.
Const NMBR_SHF = 2 'n plates
Const SHF_FIELDS = "Fg_01,Fg_02" 'Field names
Const SHF_CAL_1 = -33.1 'Unique multiplier for HFP #1 (1000/sensitivity).
Const SHF_CAL_2 = 15.11 'Unique multiplier for HFP #2 (1000/sensitivity).
Data SHF_CAL_1
Data SHF_CAL_2
'HFP01 #1
'U5 Signal (white)
'gnd Signal reference (green)
'gnd Shield (clear)
'HFP01 #2
'U6 Signal (white)
'gnd Signal reference (green)
'gnd Shield (clear)
' -> Soil temperature user constants / wiring (CR1000X)
Const TSOIL_ANALOG_INPUT = 6 'Unique differential analog input channel.
Const NMBR_TSOIL = 2 'n sensors
'TCAV1
'3H Signal #1 (purple)
'3L Signal reference #1 (red)
'gnd Shield #1 (clear)
'TCAV2
'4H Signal #2 (purple)
'4L Signal reference #2 (red)
'gnd Shield #2 (clear)
' -> T and RH user constants / wiring (VOLT116)
Const T_RH_MAIN_INPUT = 1 'Unique differential input channel for temperature and humidity probe.
Const T_RH_T_MULT = 0.14 'Unique multiplier for temperature; HC2S3 = 0.1, HMP155A = 0.14, or HMP45C = 0.1.
Const T_RH_T_OFFSET = -80 'Unique offset for temperature; HC2S3 = -40, HMP155A = -80, or HMP45C = -40.
Const T_RH_RH_MULT = 0.1 'Unique multiplier for rh; HC2S3 = ?, HMP155A = 0.001, or HMP45C = ?.
Const T_RH_RH_OFFSET = 0 'Unique offset for rh; HC2S3 = ?, HMP155A = 0, or HMP45C = ?.
'1H Temperature signal (yellow)
'1L Temperature signal reference (orange in loop with 11L, was purple, was white) --> Jumper to white
'gnd Shield
'2H RH signal (blue)
'2L RH signal reference (orange, was purple, was white)
'12V Power (red)
'G Power reference (black)
' -> 4-component radiation user constants / wiring (VOLT116)
Const NR_ANALOG_INPUT = 3 'Unique differential analog input channel for raw measurements
Const NR_TSENS_ANALOG_INPUT = 13 'Unique single-ended analog input channel for body T
Const NR_TSENS_VX = X1 'Unique voltage excitation channel for thermistor
Const NR_SW_INCOMING_CAL = 1000/12.71 'Unique multiplier for CNR 4 shortwave incoming radiation (1000/sensitivity).
Const NR_SW_OUTGOING_CAL = 1000/12.98 'Unique multiplier for CNR 4 shortwave outgoing radiation (1000/sensitivity).
Const NR_LW_INCOMING_CAL = 1000/8.75 'Unique multiplier for CNR 4 longwave incoming radiation (1000/sensitivity).
Const NR_LW_OUTGOING_CAL = 1000/9.00 'Unique multiplier for CNR 4 longwave outgoing radiation (1000/sensitivity).
'3H Incoming shortwave radiation signal (red)
'3L Incoming shortwave radiation signal reference (blue)
'gnd Shield (clear)
' short jumper wire to 5L
'4H Outgoing shortwave radiation signal (white)
'4L Outgoing shortwave radiation signal reference (black)
'gnd short jumper wire to 6L
'5H Incoming longwave radiation signal (gray)
'5L Incoming longwave radiation signal reference (yellow)
'gnd short jumper wire to 7L
'6H Outgoing longwave radiation signal (brown)
'6L Outgoing longwave radiation signal reference (green)
'gnd short jumper wire to 5L
'7H Thermistor signal (white)
'gnd Thermistor signal reference (black)
' Shield (clear)
'X1 Thermistor excitation (red)
' -> quantum sensor incoming
' -> quantum sensor outgoing
' *** End user-customised station / logger / instrument constants and wiring ***
' *** CUSTOMISE THE BELOW AT YOUR OWN RISK!!!
'############################################################################
'############################################################################
' *** Begin internal constants, variables, working data tables ***
' -> Internal and secondary constants
Const OFFSET = 17 'An offset delay that will be introduced to the eddy covariance data used to compute online fluxes.
Const SCAN_BUFFER_SIZE = 60*INT (1000/SCAN_INTERVAL) 'Compute a 60 second scan buffer.
Const NUM_DAY_CPU = 1 'Number of days of flux data to store on the CPU.
Const FLUX_SIZE_CPU = Ceiling ((NUM_DAY_CPU*1440)/OUTPUT_INTERVAL) 'Size of flux data table on CPU [days].
Const FLUX_SIZE_CRD = Ceiling ((NUM_DAY_CRD*1440)/OUTPUT_INTERVAL) 'Size of flux data table on CRD [days].
' -> Scientific constants
Const MU_WPL = 28.97/18.02 'Ratio of the molecular weight of dry air to that of water vapor.
Const R = 8.3143e-3 'Universal gas constant [kPa m^3/(K mol)].
Const RD = R/28.97 'Gas constant for dry air [kPa m^3/(K g)].
Const RV = R/18.02 'Gas constant for water vapor [kPa m^3/(K g)].
Const SB = 5.67E-8 'Stefan Boltzmann constant
Dim Lv 'Latent heat of vaporization [J/g].
Dim Cp 'Specific heat capacity [J/(kg K)].
' -> Logger diagnostic variables
Public Tpanel
Public Vbat
Units Tpanel = degC
Units Vbat = V
' -> Working variables
Dim scan_count As Long 'Number scans executed.
Dim slowsequence_finished_f As Boolean 'Flag used to indicate the SlowSequence has finished its scan.
Dim slowsequence_disable_f As Boolean = TRUE 'Flag used to decimate statistics in main scan.
Dim dly_data_out(7) 'Array used to temporarily store the lagged record for sonic or irga.
Dim process_time
Dim buff_depth
Dim PrevFileName As String *50 'The name of the daily fast data file at time of closing
Dim NewFileName As String *50 'The filename that is constructed from date and time elements
Dim NewFileFlag 'Status flag that goes high when file handle is closed (midnight)
Dim timearray(6) 'Array that holds the date and time elements used to construct the new file name
Dim i As Long 'Main scan index variable.
Dim n = 1
Units process_time = us
Units buff_depth = scans
Units n = samples
' -> CSAT3B internal constants / variables / tables
' Constants
Const DELAY_CSAT3 = 1 'Fixed CSAT3B delay.
Const CSAT3_REC_BCK = OFFSET-DELAY_CSAT3-1 'Number of records back to align CSAT3B data. Minus one scan because the SDM instruction is at the end of the program.
' Variables
Public sonic(5)
Alias sonic(1) = Ux
Alias sonic(2) = Uy
Alias sonic(3) = Uz
Alias sonic(4) = Tsonic
Alias sonic(5) = diag_sonic
Public diag_sonic_aggregate As Long
Units Ux = m/s
Units Uy = m/s
Units Uz = m/s
Units Tsonic = degC
Units diag_sonic = arb
Units diag_sonic_aggregate = arb
Dim diag_bits_sonic(9) As Long 'Sonic warning flags.
Alias diag_bits_sonic(1) = sonic_amp_l_f 'Amplitude low warning flag.
Alias diag_bits_sonic(2) = sonic_amp_h_f 'Amplitude high warning flag.
Alias diag_bits_sonic(3) = sonic_sig_lck_f 'Poor signal lock warning flag.
Alias diag_bits_sonic(4) = sonic_del_T_f 'Delta temperature warning flag.
Alias diag_bits_sonic(5) = sonic_aq_sig_f 'Sonic acquiring signals warning flag.
Alias diag_bits_sonic(6) = sonic_low_volt_f 'Sonic voltage low warning flag.
Alias diag_bits_sonic(7) = sonic_trig_f 'Datalogger trigger error flag.
Alias diag_bits_sonic(8) = sonic_intrnl_hmdty_f 'Internal humidity warning flag.
Alias diag_bits_sonic(9) = sonic_cal_err_f 'Signature error in reading CSAT3A sonic head calibration data.
Units diag_bits_sonic = arb
Dim diag_sonic_tmp As Long 'Temporary variable used to break out the CSAT3B diagnostic bits.
Dim sonic_raw(5) 'CSAT3B (not lagged).
Dim sonic_disable_f As Boolean 'TRUE when CSAT3B diagnostic warning flags are on or CSAT3B has not sent data or an SDM signature error is reported.
Dim Tsonic_absolute 'Sonic temperature (K).
Dim cov_array_sonic(1,4) 'Arrays used to hold the input data for the covariance instructions (CSAT3B).
Dim cov_out_sonic(18) 'CSAT3B statistics.
Alias cov_out_sonic(1) = Fh 'Sensible heat flux using sonic temperature.
Alias cov_out_sonic(2) = tau 'Momentum flux.
Alias cov_out_sonic(3) = u_star 'Friction velocity.
Alias cov_out_sonic(4) = Tsonic_stdev
Alias cov_out_sonic(5) = Tsonic_Ux_cov
Alias cov_out_sonic(6) = Tsonic_Uy_cov
Alias cov_out_sonic(7) = Tsonic_Uz_cov
Alias cov_out_sonic(8) = Ux_stdev
Alias cov_out_sonic(9) = Ux_Uy_cov
Alias cov_out_sonic(10) = Ux_Uz_cov
Alias cov_out_sonic(11) = Uy_stdev
Alias cov_out_sonic(12) = Uy_Uz_cov
Alias cov_out_sonic(13) = Uz_stdev
Alias cov_out_sonic(14) = wnd_spd
Alias cov_out_sonic(15) = rslt_wnd_spd
Alias cov_out_sonic(16) = wnd_dir_sonic
Alias cov_out_sonic(17) = std_wnd_dir
Alias cov_out_sonic(18) = wnd_dir_compass
Units Fh = W/m^2
Units tau = kg/m/s^2
Units u_star = m/s
Units Tsonic_stdev = degC
Units Tsonic_Ux_cov = m.degC/s
Units Tsonic_Uy_cov = m.degC/s
Units Tsonic_Uz_cov = m.degC/s
Units Ux_stdev = m/s
Units Ux_Uy_cov = m^2/s^2
Units Ux_Uz_cov = m^2/s^2
Units Uy_stdev = m/s
Units Uy_Uz_cov = m^2/s^2
Units Uz_stdev = m/s
Units wnd_spd = m/s
Units rslt_wnd_spd = m/s
Units wnd_dir_sonic = degrees
Units std_wnd_dir = degrees
Units wnd_dir_compass = degrees
' Tables
DataTable (delay_3d,TRUE,OFFSET) ' Raw sonic data delay table
TableHide
Sample (5,sonic_raw(1),IEEE4)
EndTable
DataTable (comp_cov_sonic,TRUE,1) ' Sonic covariances table
TableHide
DataInterval (0,OUTPUT_INTERVAL,Min,1)
Covariance (4,cov_array_sonic(1,1),IEEE4,sonic_disable_f,10) 'Compute covariances from CSAT3B data.
WindVector (1,Uy,Ux,IEEE4,sonic_disable_f,0,1,2)
EndTable
' -> LI7500RS internal constants / variables / tables
' Constants
Const delay_irga7500 = INT (300/SCAN_INTERVAL) 'Fixed inherent lag of the LI-7500(RS) data (three scans at 10 Hz or six scans at 20 Hz).
Const LI7500_REC_BCK = OFFSET-delay_irga7500-1 'Number of records back to align LI-7500(RS) data. Minus one scan because the SDM instruction is at the end of the program.
' Variables
Public irga(8)
Alias irga(1) = CO2
Alias irga(2) = H2O
Alias irga(3) = amb_press_irga
Alias irga(4) = sig_str_irga
Alias irga(5) = diag_irga
Alias irga(6) = Tc_irga
Alias irga(7) = Xc
Alias irga(8) = Xv
Public diag_irga_aggregate As Long
Units CO2 = mg/m^3
Units H2O = g/m^3
Units amb_press_irga = kPa
Units sig_str_irga = %
Units diag_irga = arb
Units Tc_irga = degC
Units Xc = umol/mol
Units Xv = mmol/mol
Units diag_irga_aggregate = arb
Dim diag_bits_irga(4) As Long 'Infrared gas analyzer warning flags.
Alias diag_bits_irga(1) = irga_sync_f 'Synchronization warning flag.
Alias diag_bits_irga(2) = irga_pll_f 'PLL warning flag.
Alias diag_bits_irga(3) = irga_detector_f 'Detector warning flag.
Alias diag_bits_irga(4) = irga_chopper_f 'Chopper warning flag.
Dim diag_irga_tmp As Long 'Temporary variable used to break out the LI-7500 diagnostic bits.
Dim divisor_irga 'Temporary variable used to find molar mixing ratio.
Dim irga_disable_f As Boolean 'TRUE when LI-7500(RS) sends bad data.
Dim sonic_irga_disable_f As Boolean 'TRUE when LI-7500(RS) or sonic sends bad data.
Dim rho_d_irga_mean 'Density of dry air used in Webb et al. term [kg / m^3].
Dim sigma_wpl_irga 'Webb et al. sigma = density of water vapor / density of dry air.
Dim irga_raw(5) 'Raw and not lagged LI-7500(RS) data.
'LI-7500(RS) output variables.
Dim cov_array_irga(3,4) 'Arrays used to hold the input data for the covariance instructions (sonic and LI-7500(RS)).
Dim cov_out_irga(26) 'LI-7500(RS) statistics.
Alias cov_out_irga(1) = Fco2 'Carbon dioxide flux (LI-7500(RS)), with Webb et al. term.
Alias cov_out_irga(2) = Fe 'Latent heat flux (LI-7500(RS)), with Webb et al. term.
Alias cov_out_irga(3) = Fh_irga 'Sensible heat flux using sonic temperature corrected for water vapor measured by the LI-7500(RS).
Alias cov_out_irga(4) = co2_stdev
Alias cov_out_irga(5) = CO2_Ux_cov
Alias cov_out_irga(6) = CO2_Uy_cov
Alias cov_out_irga(7) = CO2_Uz_cov
Alias cov_out_irga(8) = H2O_stdev
Alias cov_out_irga(9) = H2O_Ux_cov
Alias cov_out_irga(10) = H2O_Uy_cov
Alias cov_out_irga(11) = H2O_Uz_cov
Alias cov_out_irga(12) = Tc_stdev
Alias cov_out_irga(13) = Tc_Ux_cov
Alias cov_out_irga(14) = Tc_Uy_cov
Alias cov_out_irga(15) = Tc_Uz_cov
Alias cov_out_irga(16) = CO2_mean
Alias cov_out_irga(17) = H2O_mean
Alias cov_out_irga(18) = amb_press_mean
Alias cov_out_irga(19) = Tc_mean 'Sonic temperature corrected for humidity.
Alias cov_out_irga(20) = rho_a_mean
Alias cov_out_irga(21) = Fco2_no_wpl 'Carbon dioxide flux (LI-7500(RS)), without Webb et al. term.
Alias cov_out_irga(22) = Fe_no_wpl 'Latent heat flux (LI-7500(RS)), without Webb et al. term.
Alias cov_out_irga(23) = CO2_wpl_Fe 'Carbon dioxide flux (LI-7500(RS)), Webb et al. term due to latent heat flux.
Alias cov_out_irga(24) = CO2_wpl_Fh 'Carbon dioxide flux (LI-7500(RS)), Webb et al. term due to sensible heat flux.
Alias cov_out_irga(25) = H2O_wpl_Fe 'Latent heat flux (LI-7500(RS)), Webb et al. term due to latent heat flux.
Alias cov_out_irga(26) = H2O_wpl_Fh 'Latent heat flux (LI-7500(RS)), Webb et al. term due to sensible heat flux.
Units Fco2 = mg/(m^2 s)
Units Fe = W/m^2
Units Fh_irga = W/m^2
Units co2_stdev = mg/m^3
Units CO2_Ux_cov = mg/(m^2 s)
Units CO2_Uy_cov = mg/(m^2 s)
Units CO2_Uz_cov = mg/(m^2 s)
Units H2O_stdev = g/m^3
Units H2O_Ux_cov = g/(m^2 s)
Units H2O_Uy_cov = g/(m^2 s)
Units H2O_Uz_cov = g/(m^2 s)
Units Tc_stdev = degC
Units Tc_Ux_cov = m.degC/s
Units Tc_Uy_cov = m.degC/s
Units Tc_Uz_cov = m.degC/s
Units CO2_mean = mg/m^3
Units H2O_mean = g/m^3
Units amb_press_mean = kPa
Units Tc_mean = degC
Units rho_a_mean = kg/m^3
Units Fco2_no_wpl = mg/(m^2 s)
Units Fe_no_wpl = W/m^2
Units CO2_wpl_Fe = mg/(m^2 s)
Units CO2_wpl_Fh = mg/(m^2 s)
Units H2O_wpl_Fe = W/m^2
Units H2O_wpl_Fh = W/m^2
' Tables
DataTable (delay_irga,TRUE,OFFSET) ' Raw IRGA delay table
TableHide
Sample (5,irga_raw(1),IEEE4)
EndTable
DataTable (comp_cov_irga,TRUE,1) ' IRGA covariance table
TableHide
DataInterval (0,OUTPUT_INTERVAL,Min,1)
'Compute covariance of CO2 against sonic wind data.
Covariance (4,cov_array_irga(1,1),IEEE4,sonic_irga_disable_f,4)
'Compute covariance of H2O against sonic wind data.
Covariance (4,cov_array_irga(2,1),IEEE4,sonic_irga_disable_f,4)
'Compute covariance of Tc_irga (computed fast response temperature) against sonic wind data.
Covariance (4,cov_array_irga(3,1),IEEE4,sonic_irga_disable_f,4)
Average (3,CO2,IEEE4,irga_disable_f)
Average (1,Tc_irga,IEEE4,sonic_irga_disable_f)
EndTable
' -> Rain gauge internal variables
' Variables
Public rain
Units rain = mm
' -> Ancillary wind sensing internal variables
' Variables
'Public WS_AUX
'Public WD_AUX
'Units WS_AUX = meters/second
'Units WD_AUX = degrees
' -> T and RH internal variables / tables
' Variables
Public tmpr_rh(3)
Alias tmpr_rh(1) = Ta_sensor 'Temperature/humidity probe temperature.
Alias tmpr_rh(2) = RH_sensor 'Temperature/humidity probe relative humidity.
Alias tmpr_rh(3) = e_sensor 'Temperature/humidity probe vapor pressure.
Units Ta_sensor = degC
Units RH_sensor = %
Units e_sensor = kPa
Dim es_sensor 'Temperature/humidity probe saturation vapor pressure.
Dim rho_d_sensor 'Density of dry air used in Webb et al. term [kg / m^3].
Dim stats_out_tmpr_rh(6) 'Temperature/humidity probe statistics.
Alias stats_out_tmpr_rh(1) = Ta_sensor_mean 'Mean temperature/humidity probe temperature.
Alias stats_out_tmpr_rh(2) = e_sensor_mean 'Mean temperature/humidity probe vapor pressure.
Alias stats_out_tmpr_rh(3) = e_sat_sensor_mean 'Mean temperature/humidity probe saturation vapor pressure.
Alias stats_out_tmpr_rh(4) = AH_sensor_mean 'Mean temperature/humidity probe vapor density.
Alias stats_out_tmpr_rh(5) = RH_sensor_mean 'Mean temperature/humidity probe relative humidity.
Alias stats_out_tmpr_rh(6) = rho_a_sensor_mean 'Mean air density using Temperature/humidity probe measurements.
Units Ta_sensor_mean = degC
Units e_sensor_mean = kPa
Units e_sat_sensor_mean = kPa
Units AH_sensor_mean = g/m^3
Units RH_sensor_mean = %
Units rho_a_sensor_mean = kg/m^3
' Tables
DataTable (stats_tmpr_rh,TRUE,1)
TableHide
DataInterval (0,OUTPUT_INTERVAL,Min,1)
Average (1,Ta_sensor,IEEE4,slowsequence_disable_f)
Average (1,e_sensor,IEEE4,slowsequence_disable_f)
Average (1,es_sensor,IEEE4,slowsequence_disable_f)
EndTable
' -> 4-component radiation internal constants / variables
' Constants
'YSI 44031 Steinhart-Hart coefficients fit through -40 degrees C (239800 ohms), 20 degrees C (12260 ohms), and 80 degrees C (1458 ohms).
Const A_SHH = 1.026613e-3 'Steinhart-Hart A coefficient.
Const B_SHH = 2.395424e-4 'Steinhart-Hart B coefficient.
Const C_SHH = 1.552561e-7 'Steinhart-Hart C coefficient.
' Variables
Public nr(9)
Dim X_nr
Dim ln_R
Alias nr(1) = Fn
Alias nr(2) = albedo
Alias nr(3) = Fsd
Alias nr(4) = Fsu
Alias nr(5) = Fld
Alias nr(6) = Flu
Alias nr(7) = Tb
Alias nr(8) = Fld_meas
Alias nr(9) = Flu_meas
Units nr = W/m^2
Units albedo = arb
Units Tb = K
' -> Soil temperature variables / tables
' Variables
Public Tsoil(NMBR_TSOIL) 'TCAV soil thermocouples.
Public del_Tsoil(NMBR_TSOIL) 'Change in soil temperature.
Dim prev_Tsoil(NMBR_TSOIL)
Dim Tsoil_mean(NMBR_TSOIL)
Units Tsoil_mean = degC
Units del_Tsoil = degC
' Tables
DataTable (stats_soil,TRUE,1)
TableHide
DataInterval (0,OUTPUT_INTERVAL,Min,1)
Average (NMBR_TSOIL,Tsoil(1),IEEE4,slowsequence_disable_f)
EndTable
' -> Soil moisture variables
Public sws_cs650(NMBR_CS65X) 'Volumetric soil water content.
Public ec_cs650(NMBR_CS65X) 'Electrical conductivity.
Public T_cs650(NMBR_CS65X) 'Temperature.
Public perm_cs650(NMBR_CS65X) 'Permittivity.
Public PerAvg_cs650(NMBR_CS65X) 'Period average.
Public VoltR_cs650(NMBR_CS65X) 'Voltage ratio.
Dim cs65x_raw(6)
Units sws_cs650 = frac_v_wtr
Units ec_cs650 = dS/m
Units T_cs650 = degC
Units perm_cs650 = None
Units PerAvg_cs650 = us
Units VoltR_cs650 = None
' -> Soil heat flux variables
Public shf(NMBR_SHF) ' HFP01 soil heat flux plates.
Units shf = W/m^2
Dim shf_cal(NMBR_SHF)
''*** Beginning of PAR constants and variables ***
'Public Fpar(2)
'Alias Fpar(1) = Fpard ' Downwelling PPFD
'Alias Fpar(2) = Fparu ' Upwelling PPFD
'Units Fpar = umol/m^2/s
''*** End of PAR constants and variables ***
'*** End internal constants, variables, working data tables ***
'############################################################################
'############################################################################
'*** Begin hardware config section ***
CPIAddModule(VOLT116,CDMVOLT116_1_SN,CDMVOLT116_1_DESC,CDMVOLT116_1_ADDR) ' Add CPI module for expanded measurements
SetSetting ("StationName",STATION_NAME) 'Station name
SetSetting ("PakBusAddress",PAKBUS_ADDR) 'Pakbus address
SetSetting ("FTPEnabled",True) 'FTP server settings
SetSetting ("FTPPort",21)
SetSetting ("FTPUserName","CCFC")
SetSetting ("FTPPassword","EPCN")
PipeLineMode
'*** End hardware config section ***
'############################################################################
'############################################################################
'*** Begin output data tables ***
DataTable (TERNflux,TRUE,FLUX_SIZE_CPU)
DataInterval (0,OUTPUT_INTERVAL,Min,10)
CardOut (0,FLUX_SIZE_CRD)
'*** Beginning of CSAT3B output data ***
Sample (18,Fh,IEEE4)
Average (4,Ux,IEEE4,sonic_disable_f)
Sample (1,AZ_SONIC,IEEE4)
FieldNames ("AZ_SONIC")
Totalize (1,n,IEEE4,sonic_disable_f)
FieldNames ("sonic_samples_Tot")
Sample (1,diag_sonic_aggregate,IEEE4)
Totalize (1,n,IEEE4,diag_sonic<>NAN)
FieldNames ("no_new_sonic_data_Tot")
Totalize (1,sonic_amp_l_f,IEEE4,FALSE)
Totalize (1,sonic_amp_h_f,IEEE4,FALSE)
Totalize (1,sonic_sig_lck_f,IEEE4,FALSE)
Totalize (1,sonic_del_T_f,IEEE4,FALSE)
Totalize (1,sonic_aq_sig_f,IEEE4,FALSE)
Totalize (1,sonic_low_volt_f,IEEE4,FALSE)
Totalize (1,sonic_trig_f,IEEE4,FALSE)
Totalize (1,sonic_intrnl_hmdty_f,IEEE4,FALSE)
Totalize (1,sonic_cal_err_f,IEEE4,FALSE)
'*** End of CSAT3B output data ***
'*** Beginning of LI-7500(RS) output data ***
Sample (26,Fco2,IEEE4)
Totalize (1,n,IEEE4,irga_disable_f)
FieldNames ("irga_samples_Tot")
Sample (1,diag_irga_aggregate,IEEE4)
Totalize (1,n,IEEE4,CO2<>NAN)
FieldNames ("no_new_irga_data_Tot")
Totalize (1,n,IEEE4,CO2<>-99999)
FieldNames ("sig_error_Tot")
Average (1,sig_str_irga,IEEE4,H2O=NAN)
Totalize (1,n,IEEE4,(sig_str_irga<=IRGA_SIG_STR_THRESHOLD) IMP (H2O=NAN))
FieldNames ("sig_str_thrshld_excded_Tot")
'*** End of LI-7500(RS) output data ***
'*** Beginning of temperature and humidity probe output data ***
Sample (6,Ta_sensor_mean,IEEE4)
'*** End of temperature and humidity probe output data ***
'*** Beginning of radiometer output data ***
Average (9,Fn,IEEE4,slowsequence_disable_f)
'*** End of radiometer output data ***
'*** Beginning of soil T output data ***
Sample (NMBR_TSOIL,Tsoil_mean(1),IEEE4)
Sample (NMBR_TSOIL,del_Tsoil(1),IEEE4)
'*** End of soil T output data ***
'*** Beginning of soil moisture output data ***
Average (NMBR_CS65X,sws_cs650(1),IEEE4,slowsequence_disable_f)
Average (NMBR_CS65X,ec_cs650(1),IEEE4,slowsequence_disable_f)
Average (NMBR_CS65X,T_cs650(1),IEEE4,slowsequence_disable_f)
Average (NMBR_CS65X,perm_cs650(1),IEEE4,slowsequence_disable_f)
Average (NMBR_CS65X,PerAvg_cs650(1),IEEE4,slowsequence_disable_f)
Average (NMBR_CS65X,VoltR_cs650(1),IEEE4,slowsequence_disable_f)
'*** End of soil moisture output data ***
'*** Beginning of HFP output data ***
Average (NMBR_SHF,shf(1),IEEE4,slowsequence_disable_f)
FieldNames(SHF_FIELDS)
'*** End of HFP output data ***
'*** Beginning of precipitation output data ***
Totalize (1,rain,IEEE4,FALSE)
'*** End of precipitation output data ***
' '*** Beginning of auxiliary wind output data ***
' WindVector(1,WS_AUX,WD_AUX,FP2,False,0,0,0)
' FieldNames(WIND_AUX_FIELDS)
' '*** End of CNR 4 output data ***
'*** Beginning of other output data ***
Average (1,Tpanel,IEEE4,FALSE)
Average (1,Vbat,IEEE4,slowsequence_disable_f)
Average (1,process_time,IEEE4,FALSE)
Maximum (1,process_time,IEEE4,FALSE,FALSE)
Maximum (1,buff_depth,IEEE4,FALSE,FALSE)
'*** End of other output data ***
Totalize (1,n,IEEE4,slowsequence_disable_f)
FieldNames ("slowsequence_Tot")
EndTable
'Diagnostic data.
DataTable (diagnostic,TRUE,1)
Sample (9,sonic_amp_l_f,Boolean)
Sample (4,irga_sync_f,Boolean)
EndTable
'Time series data.
DataTable (ts_data,TRUE,-1)
DataInterval (0,SCAN_INTERVAL,mSec,100)
TableFile ("CRD:"&Status.SerialNumber(1,1)&".ts_data_",64,-1,0,1,Day,NewFileFlag,PrevFileName)
'*** Beginning of sonic time series output ***
Sample (5,sonic_raw(1),IEEE4)
FieldNames ("Ux,Uy,Uz,Tsonic,diag_sonic")
'*** End of sonic time series output ***
'*** Beginning of LI-7500(RS) time series output ***
Sample (4,irga_raw(1),IEEE4)
FieldNames ("CO2,H2O,amb_press_irga,sig_str_irga")
'*** End of LI-7500(RS) time series output ***
EndTable
'*** End output data tables ***
'############################################################################
'############################################################################
'*** Begin subroutines ***
Sub file_rename()
' This subroutine creates a new filename and renames the file output to the card by tablefile
SplitStr(timearray(),TERNflux.TimeStamp(3,2),"",6,0)
NewFileName = _
"CRD:TOB3_"&STATION_NAME&"_"&SCAN_INTERVAL&"ms_"&timearray(3)&"_"& _
FormatFloat(timearray(2),"%02.0f")&"_"& _
FormatFloat(timearray(1),"%02.0f")&".dat"
FileRename(PrevFileName, NewFileName)
EndSub
'*** End subroutines ***
'############################################################################
'############################################################################
'*** Program ***
BeginProg
' Load NMBR_SHF plate calibration.
For i = 1 To NMBR_SHF
Read shf_cal(i)
Next i
'Set the SDM clock speed.
SDMSpeed (SDM_PER)
Scan (SCAN_INTERVAL,mSec,SCAN_BUFFER_SIZE,0)
'Datalogger panel temperature.
PanelTemp (Tpanel,250)
'*** Beginning of sonic measurement processing ***
CallTable delay_3d
'*** End of sonic measurement processing ***
'*** Beginning of LI-7500(RS) measurement processing ***
'Convert LI-7500(RS) data from molar density [mmol/m^3] to mass density.
' 44 [g/mol] - molecular weight of carbon dioxide
' 0.01802 [g/mmol] - molecular weight of water vapor
If ( irga_raw(1) <> -99999 ) Then ( irga_raw(1) = irga_raw(1)*44 )
irga_raw(2) = irga_raw(2)*0.01802
'Extract LI-7500(RS) diagnostic bits.
irga_raw(5) = (irga_raw(4) AND &hf0) >> 4
'Compute the signal strength.
irga_raw(4) = (irga_raw(4) AND &hf)*6.67
CallTable delay_irga
'*** End of LI-7500(RS) measurement processing ***
'*** Beginning of rain gauge measurement ***
PulseCount (rain,1,RAIN_PULSE_INPUT,1,0,RAIN_CAL,0)
'*** End of rain gauge measurement ***
' '*** Beginning of independent wind speed and direction measurement
' PulseCount(WS_AUX,1,WIND_SPD_PULSE_INPUT,5,1,0.098,0)
' BrHalf (WD_AUX,1,AutoRange,WIND_DIR_ANALOG_INPUT,WIND_DIR_VX_PORT,1,WIND_DIR_VX_MV,True,0,ANALOG_INTEGRATION,355,0)
' If WD_AUX >=360 Then WD_AUX = 0
' If WD_AUX <0 Then WD_AUX = 0
' '*** End of independent wind speed and direction
'Save time series data.
CallTable ts_data
If ( scan_count >= OFFSET ) Then
'*** Beginning of sonic processing ***
'Load in CSAT3B data that has been lagged by CSAT3_REC_BCK scans.
GetRecord (dly_data_out(1),delay_3d,CSAT3_REC_BCK)
Move (Ux,5,dly_data_out(1),5) 'Ux, Uy, Uz, Tsonic, diag_sonic
diag_sonic_tmp = IIF (diag_sonic <> NAN,diag_sonic,&h100)
diag_sonic_aggregate = diag_sonic_aggregate OR diag_sonic_tmp
'Extract the nine warning flags from the sonic diagnostic word.
For i = 1 To 9
diag_bits_sonic(i) = diag_sonic_tmp AND &h1
diag_sonic_tmp = diag_sonic_tmp >> 1
Next i
Tsonic_absolute = Tsonic+273.15
'Filter data in the covariance instruction if the CSAT3B reports bad data.
sonic_disable_f = (diag_sonic <> 0)
'Load the arrays that hold the input data for the covariance instructions.
cov_array_sonic(1,1) = Tsonic
Move (cov_array_sonic(1,2),3,Ux,3)
CallTable comp_cov_sonic
If ( comp_cov_sonic.Output(1,1) ) Then
GetRecord (Tsonic_stdev,comp_cov_sonic,1)
'Rotate the CSAT3B RHC system so the negative x-axis points north.
wnd_dir_compass = (360+AZ_SONIC-wnd_dir_sonic) MOD 360
'Make the CSAT3B wind direction fall between 0 to 180 degrees and 0 to -180 degrees.
If ( wnd_dir_sonic > 180 ) Then ( wnd_dir_sonic = wnd_dir_sonic-360 )
'Compute online fluxes.
tau = SQR ((Ux_Uz_cov*Ux_Uz_cov)+(Uy_Uz_cov*Uy_Uz_cov))
u_star = SQR (tau)
'Compute the standard deviation from the variance.
Tsonic_stdev = SQR (Tsonic_stdev)
Ux_stdev = SQR (Ux_stdev)
Uy_stdev = SQR (Uy_stdev)
Uz_stdev = SQR (Uz_stdev)
EndIf
'*** End of sonic processing ***
'*** Beginning of temperature and humidity processing ***
CallTable stats_tmpr_rh
If ( stats_tmpr_rh.Output(1,1) ) Then
GetRecord (Ta_sensor_mean,stats_tmpr_rh,1)
AH_sensor_mean = e_sensor_mean/((Ta_sensor_mean+273.15)*RV)
rho_d_sensor = (amb_press_mean-e_sensor_mean)/((Ta_sensor_mean+273.15)*RD)
rho_a_sensor_mean = (rho_d_sensor+AH_sensor_mean)/1000
RH_sensor_mean = 100*e_sensor_mean/e_sat_sensor_mean
EndIf
'*** End of temperature and humidity processing ***
'*** Beginning of LI-7500(RS) processing ***
'Load in the LI-7500(RS) data that has been lagged by LI7500_REC_BCK scans.
GetRecord (dly_data_out(1),delay_irga,LI7500_REC_BCK)
Move (CO2,5,dly_data_out(1),5) 'CO2, H2O, press, signal strength, diag
diag_irga_tmp = IIF (diag_irga <> NAN,diag_irga,&h00)
diag_irga_aggregate = diag_irga_aggregate OR diag_irga_tmp
'Extract the four flags from the gas analyzer diagnostic word.
For i = 1 To 4
diag_bits_irga(i) = diag_irga_tmp AND &h1
diag_irga_tmp = diag_irga_tmp >> 1
Next i
'Compute fast response air temperature from sonic temperature and IRGA
' vapor density (see sonic manual).
Tc_irga = Tsonic_absolute/(1+0.32*H2O*R*Tsonic_absolute/(amb_press_irga*18.02)) 'Kaimal and Gaynor (1991) Eq. 3
'Compute the molar mixing ratio of CO2 and H2O.
divisor_irga = (amb_press_irga/(R*Tc_irga))-(H2O/18.02)
Xc = CO2/(0.044*divisor_irga)
Xv = H2O/(0.01802*divisor_irga)
'Convert the fast response air temperature to degrees C.
Tc_irga = Tc_irga-273.15
'Filter data in the covariance instruction if the LI-7500(RS) reports bad data.
irga_disable_f = (sig_str_irga < IRGA_SIG_STR_THRESHOLD) OR (H2O = NAN)
'Load the arrays that hold the input data for the covariance instructions.
cov_array_irga(1,1) = CO2
Move (cov_array_irga(1,2),3,Ux,3)
cov_array_irga(2,1) = H2O
Move (cov_array_irga(2,2),3,Ux,3)
cov_array_irga(3,1) = Tc_irga
Move (cov_array_irga(3,2),3,Ux,3)
CallTable comp_cov_irga
If ( comp_cov_irga.Output(1,1) ) Then
GetRecord (co2_stdev,comp_cov_irga,1)
rho_d_irga_mean = (amb_press_mean/((Tc_mean+273.15)*RD))-(H2O_mean*MU_WPL)
Cp = 1004.67*(1+0.84*(0.622*H2O_mean*RV*(Tc_mean+273.15)/amb_press_mean)) 'Stull (1989)
rho_a_mean = (rho_d_irga_mean+H2O_mean)/1000
Lv = 2501-(2.37*Tc_mean) 'Stull (1989)
'Compute online fluxes.
Fco2_no_wpl = CO2_Uz_cov
Fe_no_wpl = Lv*H2O_Uz_cov
'Compute the standard deviation from the variance.
co2_stdev = SQR (co2_stdev)
H2O_stdev = SQR (H2O_stdev)
Tc_stdev = SQR (Tc_stdev)
sigma_wpl_irga = H2O_mean/rho_d_irga_mean
'LI-7500(RS) Webb et al. term for carbon dioxide Eq. (24).
CO2_wpl_Fe = MU_WPL*CO2_mean/rho_d_irga_mean*H2O_Uz_cov
CO2_wpl_Fh = (1+(MU_WPL*sigma_wpl_irga))*CO2_mean/(Tc_mean+273.15)*Tc_Uz_cov
Fco2 = Fco2_no_wpl+CO2_wpl_Fe+CO2_wpl_Fh
'LI-7500(RS) Webb et al. term for water vapor Eq. (25).
CO2_wpl_Fe = MU_WPL*sigma_wpl_irga*Fe_no_wpl
CO2_wpl_Fh = (1+(MU_WPL*sigma_wpl_irga))*H2O_mean/(Tc_mean+273.15)*Lv*Tc_Uz_cov
Fe = Fe_no_wpl+CO2_wpl_Fe+CO2_wpl_Fh
EndIf
'*** End of LI-7500(RS) processing ***
'*** Beginning of sonic sensible heat, momentum, and sensible heat flux processing ***
If ( comp_cov_sonic.Output(1,1) ) Then
'CSAT3(A) sensible heat flux using sonic temperature.
Fh = rho_a_sensor_mean*Cp*Tsonic_Uz_cov 'Air density computed from temperature and humidity probe.
'CSAT3(A) momentum flux.
tau = rho_a_sensor_mean*tau 'Air density computed from temperature and humidity probe.
'Sensible heat flux using sonic temperature corrected for water vapor measured by the LI-7500(RS).
Fh_irga = rho_a_sensor_mean*Cp*Tc_Uz_cov 'Air density computed from temperature and humidity probe.
EndIf
'*** End of sensible heat flux processing ***
'*** Beginning of soil temperature processing ***
CallTable stats_soil
If ( stats_soil.Output(1,1) ) Then
GetRecord (Tsoil_mean(1),stats_soil,1)
'Compute the change in soil temperature.
For i = 1 To NMBR_TSOIL
del_Tsoil(i) = Tsoil_mean(i)-prev_Tsoil(i)
prev_Tsoil(i) = Tsoil_mean(i)
Next i
EndIf
'*** End of soil temperature processing ***
CallTable TERNflux
If ( TERNflux.Output(1,1) ) Then
diag_sonic_aggregate = 0
diag_irga_aggregate = 0
EndIf