<td class=xl34 style='border-top:none;border-left:none'> 
  This file contains file formats for the ARM co2flux and portable flux systems.  Note that first level quality checked (.b1 and .b1met) file types are provided to the Ameriflux archive after being converted from netcdf to ascii format and concatenated together into multi-day observation periods.  Other file types are or will be available on the DOE-ARM website in the near future.   date                
File information for 60m tower and portable flux systems 21-Feb-03   date                
                       
Table 1. Proposal information                      
descriptive name collection and analysis of CO2,H2O, and heat fluxes at SGP-CF                    
proposer Marc Fischer                    
requestor Marc Fischer                    
Mentor Marc Fischer                    
developers Marc Fischer (mlfischer@lbl.gov),  Dave Billesbach (dbillesbach1@unl.edu)                    
date proposed 10/10/01                    
new data source Yes                    
key scientific measurements CO2, H2O, sensible heat fluxes                    
related data stream sgp30co2flx60mC1, sgp30co2flx25mC1,sgp30co2flx4mC1,sgpp1flxTn, sgpp2flxTn,spgp3flxTn                    
new site Yes                    
new facility Yes                    
new instrument Yes                    
geographic distribution SGP-CF                    
development time unknown                    
duration periodic                    
implementation type production                    
Ops resource low                    
Eng resource low                    
Data sys resource low                    
                       
                       
Table 2. Delivery information                      
                       
data stream group SGP portable carbon measurements                    
contact name Marc Fischer (mlfischer@lbl.gov)                      
Custodian name Marc Fischer                    
Date submitted 10/10/01                    
Data source description of portable flux systems, ie sgp30p1flxT1, spg30p2flxT1, sgp30p2flxT2, sgp30p2flxT1, sgp30p2flxT2 Sonic anemometer and infrared gas analyzer on portable towers nead Central Facility.  Various radiometers, soil heat flux, temperature, and moisture sensors, mean barometric pressure, mean wind speed, wind direction, mean temperature (2 levels) and mean relative humidity (2 levels)                    
Data source description for stationary flux systems, ie sgp30co2flx4mC1, sgp30co2flx25mC1, sgp30co2flx60mC1 Sonic anemometer and infrared gas analyzer on 60m tower at SGP Central Facility, various radiometers, soil heat flux, temperature, and moisture sensors (4m system only), mean barometric pressure, mean wind speed, wind direction                    
Start of 60mflx stationary operation 09/10/00                    
Start of portable operation Episodically since 07/12/2001                    
Start of 4m,25m,60m flx operation 12/18/02                      
                         
Data Stream Attributes                      
General Name Specific Names Contents Format tar file number of files / day expected file size (MB) time span / file delivery schedule measure of expectation user accessible input data streams processing algorithms (platform, language, name)
                         
sgpINST.a0 sgp30co2flxMmC1.a0, sgp30pXflxTn.a0 all raw data. M -- one of three heights (4m,25m,60m) for stationary flux system.  co2flxMMm is data collected by co2 flux systems on the stationary 60m tower at SGP CF; 30 is the averaging interval in minutes.  X -- number identifying the portable flux system (1, 2, or 3).  n -- number identigying deployment of that system (1, 2, or 3). p1flxT1 is data collected by co2 flux system 1 during the first campaign of the year. Portable data is collected on on the portable field towers near the SGP CF. The other data streams (i.e. a1, b1, and c1) are similarly named. binary yes 1 14 1 day next week 1 file per day / size no none WinfluxWMP win-32, Win 2k PC, 12/18/2002 - Sonic software, Linux RedHat7.3
sgpINSTmet.a0 sgp30co2flx4mmetC1.a0, sgppXflxTnmet.a0 all raw met data. Only available for the 4m co2flx system and the portable campaigns. binary yes 1 0.1 1 day next week 1 file per day/ size no none WinfluxWMP win-32, Win 2k PC, Sonic software, Linux RedHat7.3
sgpINST.a1 sgp30co2flx60mC1.a1 , sgp30pXflxTn.a1 calculation of moments and covariances and baseline qc flags (in volts for the IRGA) Net-CDF no 1 0.04 1 day next week 1 file per day / size (48 averaging periods) yes sgp30co2flxMMmC1.a0, sgp30pXflxTn.a0  Linux 2.4.3, C
sgpINST.b1 sgp30co2flx60mC1.b1, sgp30pXflxTn.b1 calculation of fluxes,and statistics in natural units  w/ additional qc flags Net-CDF no 1 0.02 1 day next week 1 file per day / size (48 averaging periods) yes sgp30co2flxMMmC1.a1, sgp30pXflxTn.a1 Linux 2.4.3, C
sgpINSTmet.b1 sgp30co2flx4mmetC1.b1, sgp30pXflxmetTn.b1 only available for co2flx4m and pXflx. The b1 file with met data. Net-CDF no 1 0.02 1 day next week 1 file per day / size (48 averaging periods) yes sgp30co2flxMMmC1.b1, sgp30pXflxTn.b1, possibly sgppgsC1.b1, sgp30smosE13.b1, sgp30twr10xC1.b1 Linux 2.4.3, C
sgpINSTstor.b1 sgp30co2flx4mstorC1.b1, sgp30pXflxstorTn.b1 the b1 file with co2 storage necessary for NEE and qc flags. Net-CDF no 1 0.02 1 day next week 1 file per day / size (48 averaging periods) yes sgp30co2flxMMmC1.b1, sgp30pXflxTn.b1, possibly sgppgsC1.b1, sgp30smosE13.b1, sgp30twr10xC1.b2 Linux 2.4.3, C
sgpINSTmet.c1 sgp30co2flx4mmetC1.c1, sgp30pXflxmetTn.c1 gap filled flux file with met data for co2flx4m and pXflx. Net-CDF no 1 0.05 1 day TBD 1 file per day / size (48 averaging periods) yes sgp30co2flxMMmC1.b2, sgp30pXflxTn.b2 Linux 2.4.3, C
sgpINSTstor.c1 sgp30co2flx4mstorC1.c1, sgp30pXflxstorTn.c1 gap filled flux file with co2 storage necessary for NEE Net-CDF no 1 0.05 1 day TBD 1 file per day / size (48 averaging periods) yes sgp30co2flxMMmC1.b2, sgp30pXflxTn.b3 Linux 2.4.3, C
                         
                         
                         
                     
Global attributes                        
attribute name attribute description attribute value if static                    
                         
site id site id SGP                    
facility id facility id Tn (n=1,2,3)                    
sds mode data processing mode a1, b1, c1 as appropriate                    
missing or bad data value missing or bad data value -9999                    
met data precision met data precision diurnal variations are good to ~ 0.02 mmol/m^3 (~ 0.5 ppm). Offset value is uncertain at the roughly 0.2 mmol/ m^3 (roughly 5 ppm)                    
resolution description comments on resolution varies (see data file)                    
sensor location sensor location varies (see data file)                    
IRGA serial number instrument serial number varies (see data file)                    
Sonic serial number instrument serial number varies (see data file)                    
data collection software data collection software - portable varies (see data file)                    
  data collection software - stationary varies (see data file)                    
wind gain wind gain (m/s/bit) 0.01                    
temperature gain temperature gain (C/bit) 0.01                    
H2O offset water vapor offset (mol/m^3) 0                    
H2O gain water vapor gain (V/bit or mol/m^3/V) varies (see data file)                    
CO2 offset carbon dioxide offset   (V or mmol/m^3) varies (see data file)                    
CO2 gain carbon dioxide gain   (V/bit or mmol/m^3/V) varies (see data file)                    
sample_int sample interval 0.1s                    
averaging_int averaging interval 30min                    
irga_lag number of samples co2/h2o lag wind calculated for each averaging period                    
boom direction offset of anemometer rotation azimuth varies (see data file)                    
heights sensor heights varies (see data file)                    
instruments sensor make & model Anemometer: Gill Windmaster Pro, IRGA: LICOR 7500                    
lat site latitude varies (see data file)                    
lon site longitude varies (see data file)                    
alt altitude (meter above sea level) varies (see data file)                    
                         
                         
File a1                        
varname longname units scientific relevance scientific relevance geophysical focus area            
                         
YYYYdddhhmmss start time of interval yyyyddd     no none            
mean_u mean North wind speed (u) m s-1     yes atmpospheric state            
mean_v mean East wind speed (v) m s-1     yes atmpospheric state            
mean_w mean wind speed vertical (w) m s-1     yes atmpospheric state            
mean_t mean sonic temperature (t) C     yes atmpospheric state            
mean_q mean water vapor voltage (q) V     yes atmpospheric state            
mean_c mean co2 voltage ( c ) V     yes atmpospheric state            
var_u variance of variable u (m s-1)2     yes atmpospheric state            
var_v variance of variable v (m s-1)2     yes atmpospheric state            
var_w variance of variable w (m s-1)2     yes atmpospheric state            
var_t variance of variable t C2     yes atmpospheric state            
var_q variance of variable q V2     yes atmpospheric state            
var_c variance of variable c V2     yes atmpospheric state            
skew_u skewness of variable u none     yes atmpospheric state            
skew_v skewness of variable v none     yes atmpospheric state            
skew_w skewness of variable w none     yes atmpospheric state            
skew_t skewness of variable t none     yes atmpospheric state            
skew_q skewness of variable q none     yes atmpospheric state            
skew_c skewness of variable c none     yes atmpospheric state            
kurt_u kurtosis of variable u none     yes atmpospheric state            
kurt_v kurtosis of variable v none     yes atmpospheric state            
kurt_w kurtosis of variable w none     yes atmpospheric state            
kurt_t kurtosis of variable t none     yes atmpospheric state            
kurt_q kurtosis of variable q none     yes atmpospheric state            
kurt_c kurtosis of variable c none     yes atmpospheric state            
cvar_uv covariance uv (m s-1)2     yes atmpospheric state            
cvar_uw covariance uw (m s-1)2     yes atmpospheric state            
cvar_vw covariance vw (m s-1)2     yes atmpospheric state            
cvar_ut covariance ut (m s-1)2     yes atmpospheric state            
cvar_uq covariance uq m s-1 V     yes atmpospheric state            
cvar_uc covariance uc m s-1 V     yes atmpospheric state            
cvar_vt covariance vt m s-1 C     yes atmpospheric state            
cvar_vq covariance vq m s-1 V     yes atmpospheric state            
cvar_vc covaraince vc m s-1 V     yes atmpospheric state            
cvar_wt covariance wt m s-1 C     yes atmpospheric state            
cvar_wq covaraince wq m s-1 V     yes atmpospheric state            
cvar_wc covariance wc m s-1 V     yes atmpospheric state            
cvar_tq covariance tq C V     yes atmpospheric state            
cvar_tc covariance tc C V     yes atmpospheric state            
cvar_qc covariance qc V2     yes atmpospheric state            
theta rotation to wbar = 0 degrees     yes atmpospheric state            
phi rotation to vbar = 0 degrees     yes atmpospheric state            
mean_rot_u rotated mean u m s-1     yes atmpospheric state            
mean_rot_v rotated mean v m s-1     yes atmpospheric state            
mean_rot_w rotated mean w m s-1     yes atmpospheric state            
var_rot_u rotated variance u (m s-1)2     yes atmpospheric state            
var_rot_v rotated variance v (m s-1)2     yes atmpospheric state            
var_rot_w rotated variance w (m s-1)2     yes atmpospheric state            
cvar_rot_uv rotated covariance uv (m s-1)2     yes atmpospheric state            
cvar_rot_uw rotated covariance uw (m s-1)2     yes atmpospheric state            
cvar_rot_vw rotated covariance vw (m s-1)2     yes atmpospheric state            
cvar_rot_ut rotated covariance ut m s-1 C     yes atmpospheric state            
cvar_rot_uq rotated covariance uq m s-1 V     yes atmpospheric state            
cvar_rot_uc rotated covariance uc m s-1 V     yes atmpospheric state            
cvar_rot_vt rotated covariance vt m s-1 C     yes atmpospheric state            
cvar_rot_vq rotated covariance vq m s-1 V     yes atmpospheric state            
cvar_rot_vc rotated covariance vc m s-1 V     yes atmpospheric state            
cvar_rot_wt rotated covariance wt m s-1 C     yes atmpospheric state            
cvar_rot_wq rotated covariance wq m s-1 V     yes atmpospheric state            
cvar_rot_wc rotated covariance wc m s-1 V     yes atmpospheric state            
qc_u number of samples out of range u none     no none            
qc_v number of samples out of range v none     no none            
qc_w number of samples out of range w none     no none            
qc_t number of samples out of range t none     no none            
qc_q number of samples out of range q none     no none            
qc_c number of samples out of range c none     no none            
nspk_u number of samples removed due to spikes u none     no none            
nspk_v number of samples removed due to spikes v none     no none            
nspk_w number of samples removed due to spikes w none     no none            
nspk_t number of samples removed due to spikes t none     no none            
nspk_q number of samples removed due to spikes q none     no none            
nspk_c number of samples removed due to spikes c none     no none            
badmean_u mean value of bad samples u m s-1     no none            
badmean_v mean value of bad samples v m s-1     no none            
badmean_w mean value of bad samples w m s-1     no none            
badmean_t mean value of bad samples t C     no none            
badmean_q mean value of bad samples q V     no none            
badmean_c mean value of bad samples c V     no none            
site_latitude latitude of current site degrees N     no none            
site_longitude longitude of current site degrees W     no none            
site_elevation elevation of current site m A.M.S.     no none            
zm height of flux instruments m     no none            
                         
                         
File b1                      
varname longname units scientific relevance scientific relevance geophysical focus area min max        
                         
yeardaymin start of integration interval yydddhhmm     no none NA NA        
DOY fractional day of year days     no none NA NA        
fc_corr WPL corrected CO2 flux umol m-2 s-1     yes Carbon Cycle -50 30        
wc_2d uncorrected CO2 flux umol m-2 s-1     yes Carbon Cycle -50 30        
fc_wpl_h WPL H correction to fc umol m-2 s-1     yes Carbon Cycle -20 10        
fc_wpl_le WPL LE correction to fc umol m-2 s-1     yes Carbon Cycle -5 5        
h corrected sensible heat flux W m-2     yes Surface energy exchange -200 800        
le WPL corrected latent heat flux W m-2     yes Surface energy exchange -50 800        
mean_u mean horizontal wind speed m s-1     yes atmospheric state 0 50        
mean_t mean sonic temp C     yes atmospheric state -20 50        
mean_q mean H2O density mmol m-3     yes atmospheric state 0 2000        
mean_c mean CO2 density mmol m-3     yes atmospheric state 10 30        
var_u variance of u (m s-1)2     yes atmospheric state 0 100        
var_v variance of v (m s-1)2     yes atmospheric state 0 100        
var_w variance of w (m s-1)2     yes atmospheric state 0 2        
var_t variance of sonic temp C2     yes atmospheric state 0 5        
var_q variance of H2O density (mmol m-3)2     yes atmospheric state 0 6000        
var_c variance of co2 density (mmol m-3)2     yes Carbon Cycle 0 0.4        
wdir horizontal wind direction degrees     yes atmospheric state 0 360        
theta rotation to zero w degrees     yes Carbon Cycle 0 360        
phi rotation to zero v degrees     yes atmospheric state 0 360        
ustar friction  velocity m s-1     yes atmospheric state 0 100        
Lmoni Monin-Obukhov length scale m     yes atmospheric state -10000 10000        
qc_flag_w QC flag on variable w 0=ok, 1= out of range, 2 = spike     no none 0 3      
qc_flag_t QC flag on variable t 0=ok, 1= out of range, 2 = spike     no none 0 3        
qc_flag_q QC flag on variable q 0=ok, 1= out of range, 2 = spike, 3 = large variance     no none 0 3        
qc_flag_c QC flag on variable c 0=ok, 1= out of range, 2 = spike, 3 = large variance     no none 0 3        
qc_flag_ustar QC flag on variable ustar 0=ok, 1= too low, 2=positive u'w'     no none 0 3        
site_latitude latitude of current site degrees N     no none 30 40        
site_longitude longitude of current site degrees W     no none 90 100        
site_elevation elevation of current site m A.M.S.     no none 300 350        
zm height of flux instruments m     no none 0 60        
                         
                         
                         
                         
File b1met                      
varname longname units   scientific relevance scientific relevance geophysical focus area sensor height min max Data Source for Variable Variable Name from Other Data Source  
                         
yeardaymin start of integration interval yydddhhmm     no     NA NA      
DOY fractional day of year days     no     NA NA      
fc_corr WPL corrected CO2 flux umol m-2 s-1     yes Carbon Cycle see zm -50 30      
wc_2d uncorrected CO2 flux umol m-2 s-1     yes Carbon Cycle see zm -50 30      
fc_wpl_h WPL H correction to fc umol m-2 s-1     yes Carbon Cycle see zm -20 10      
fc_wpl_le WPL LE correction to fc umol m-2 s-1     yes Carbon Cycle see zm -5 5      
h corrected sensible heat flux W m-2     yes Surface energy exchange see zm -200 800      
le WPL corrected latent heat flux W m-2     yes Surface energy exchange see zm -50 800      
mean_u mean horizontal wind speed m s-1     yes atmospheric state see zm 0 50      
mean_t mean sonic temp C     yes atmospheric state see zm -20 50      
mean_q mean H2O density mmol m-3     yes atmospheric state see zm 0 2000      
mean_c mean CO2 density mmol m-3     yes atmospheric state see zm 10 30      
var_u variance of u (m s-1)2     yes atmospheric state see zm 0 100      
var_v variance of v (m s-1)2     yes atmospheric state see zm 0 100      
var_w variance of w (m s-1)2     yes atmospheric state see zm 0 2      
var_t variance of sonic temp C2     yes atmospheric state see zm 0 5      
var_q variance of H2O density (mmol m-3)2     yes atmospheric state see zm 0 6000      
var_c variance of co2 density (umol m-3)2     yes Carbon Cycle see zm 0 0.4      
wdir horizontal wind direction degrees     yes atmospheric state see zm 0 360      
theta rotation to zero w degrees     yes Carbon Cycle see zm 0 360      
phi rotation to zero v degrees     yes atmospheric state see zm 0 360      
ustar friction  velocity m s-1     yes atmospheric state see zm 0 10      
Lmoni Monin-Obukhov length scale m     yes atmospheric state see zm -10000 10000      
qc_flag_w QC flag on variable w 0=ok, 1= out of range, 2 = spike     no none   0 3      
qc_flag_t QC flag on variable t 0=ok, 1= out of range, 2 = spike     no none   0 3      
qc_flag_q QC flag on variable q 0=ok, 1= out of range, 2 = spike, 3 = large variance     no none   0 3      
qc_flag_c QC flag on variable c 0=ok, 1= out of range, 2 = spike, 3 = large variance     no none   0 3      
qc_flag_ustar QC flag on variable ustar 0=ok, 1= too low, 2=positive u'w'     no none   0 3      
d height of canopy m     yes land surface condition N/A 0 4      
bar_pres barometric pressure kPa     yes atmospheric state 2m 94 101      
t_air_upper mean air temperature (upper level) C     yes atmospheric state see z_upper -20 50      
t_air_lower mean air temperature (lower level) C     yes atmospheric state see z_lower -20 50      
rh_upper mean relative humidity (upper level) %     yes atmospheric state see z_upper 0 100      
rh_lower mean relative humidity (lower level) %     yes atmospheric state see z_lower 0 100      
z_upper height of upper RH/T sensor m     no none N/A 0 100      
z_lower height of lower RH/T sensor m     no none N/A 0 5      
G_1 soil heat flux #1 W m-2     yes Surface energy exchange ~6cm below surface -100 200 similar to EBBR    
G_2 soil heat flux #2 W m-2     yes Surface energy exchange ~6cm below surface -100 200 similar to EBBR    
G_3 soil heat flux #3 W m-2     yes Surface energy exchange ~6cm below surface -100 200 similar to EBBR    
G_4 soil heat flux #4 W m-2     yes Surface energy exchange ~6cm below surface -100 200 similar to EBBR    
zrad height of radiation instruments m     no none N/A 0 60      
R_net net solar radiation (NR-lite) W m-2     yes Surface energy exchange see zrad -100 800      
R_tot total downwelling shortwave radiation (LI-200 sensor) W m-2     yes Surface energy exchange see zrad -100 1200      
R_down_short_hemisp downwelling shortwave hemispheric irradiance W m-2     yes Surface energy exchange see zrad -10 1200 SIRS    
R_up_short_hemisp upwelling shortwave hemispheric irradiance W m-2     yes Surface energy exchange see zrad -10 1200 SIRS    
R_down_long_hemisp downwelling longwave hemispheric irradiance W m-2     yes Surface energy exchange see zrad -10 500 SIRS    
R_up_long_hemisp upwelling longwave hemispheric irradiance W m-2     yes Surface energy exchange see zrad -200 200 SIRS    
T_rad radiometer body tempearture (for longwave correction) K     yes Surface energy exchange see zrad -100 100      
PPFD photosynthetic photon flux density (PAR) umole m-2 s-1     yes Carbon Cycle see zrad -100 2250      
T_soil_1 soil temperature 1 C     yes soil properties  -25 cm -10 50      
T_soil_2 soil temperature 2 C     yes soil properties  -15 cm -20 50      
T_soil_3 soil temperature 3 C     yes soil properties  -5 cm -20 50      
T_soil_4 soil temperature 4 C     yes soil properties  -25 cm -20 50      
T_soil_5 soil temperature 5 C     yes soil properties  -15 cm -20 50      
T_soil_6 soil temperature 6 C     yes soil properties  -5 cm -20 50      
M_soil_1 volumetric soil moisture 1 cm3 cm-3     yes soil properties  -25 cm 0 50      
M_soil_2 volumetric soil moisture 2 cm3 cm-3     yes soil properties  -25 cm 0 50      
M_soil_3 volumetric soil moisture 3 cm3 cm-3     yes soil properties  -5 cm 0 50      
M_soil_4 volumetric soil moisture 4 cm3 cm-3     yes soil properties  -5 cm 0 50      
M_soil_5 volumetric soil moisture 5 cm3 cm-3     yes soil properties  -25 cm 0 50      
M_soil_6 volumetric soil moisture 6 cm3 cm-3     yes soil properties  -25 cm 0 50      
M_soil_7 volumetric soil moisture 7 cm3 cm-3     yes soil properties  -5 cm 0 50      
M_soil_8 volumetric soil moisture 8 cm3 cm-3     yes soil properties  -5 cm 0 50      
precip mean precipitation mm 30min-1     yes soil properties N/A 0 40      
site_lat site latitude degrees N     no N/A N/A 30 40      
site_long site longitude degrees W     no N/A N/A 90 100      
site_elev site elevation m A.M.S.     no N/A N/A 300 350      
zm height of flux instruments m     no N/A N/A 0 60      
                         
                         
                         
File b1stor                      
varname longname units   scientific relevance scientific relevance geophysical focus area sensor height min max Data Source for Variable Variable Name from Other Data Source  
                         
yeardaymin start of integration interval yydddhhmm     no     NA NA      
DOY fractional day of year days     no     NA NA      
NEE Net Ecosystem Exchange of CO2 umol m-2 s-1     yes Carbon Cycle see zm NA NA      
fc_stor change in CO2 stored below sensor during the 30min period umol m-2 s-1     yes Carbon Cycle see zm NA NA      
fc_corr WPL corrected CO2 flux umol m-2 s-1     yes Carbon Cycle see zm -50 30      
wc_2d uncorrected CO2 flux umol m-2 s-1     yes Carbon Cycle see zm -50 30      
fc_wpl_h WPL H correction to fc umol m-2 s-1     yes Carbon Cycle see zm -20 10      
fc_wpl_le WPL LE correction to fc umol m-2 s-1     yes Carbon Cycle see zm -5 5      
h corrected sensible heat flux W m-2     yes Surface energy exchange see zm -200 800      
le WPL corrected latent heat flux W m-2     yes Surface energy exchange see zm -50 800      
mean_u mean horizontal wind speed m s-1     yes atmospheric state see zm 0 50      
mean_t mean sonic temp C     yes atmospheric state see zm -20 50      
mean_q mean H2O density mmol m-3     yes atmospheric state see zm 0 2000      
mean_c mean CO2 density umol m-3     yes atmospheric state see zm 10 30      
var_u variance of u (m s-1)2     yes atmospheric state see zm 0 100      
var_v variance of v (m s-1)2     yes atmospheric state see zm 0 100      
var_w variance of w (m s-1)2     yes atmospheric state see zm 0 2      
var_t variance of sonic temp C2     yes atmospheric state see zm 0 5      
var_q variance of H2O density (mmol m-3)2     yes atmospheric state see zm 0 6000      
var_c variance of co2 density (umol m-3)2     yes Carbon Cycle see zm 0 0.4      
wdir horizontal wind direction degrees     yes atmospheric state see zm 0 360      
theta rotation to zero w degrees     yes Carbon Cycle see zm 0 360      
phi rotation to zero v degrees     yes atmospheric state see zm 0 360      
ustar friction  velocity m s-1     yes atmospheric state see zm 0 10      
Lmoni Monin-Obukhov length scale m     yes atmospheric state see zm -10000 10000      
qc_flag_w QC flag on variable w 0=ok, 1= out of range, 2 = spike     no none   0 3      
qc_flag_t QC flag on variable t 0=ok, 1= out of range, 2 = spike     no none   0 3      
qc_flag_q QC flag on variable q 0=ok, 1= out of range, 2 = spike, 3 = large variance     no none   0 3      
qc_flag_c QC flag on variable c 0=ok, 1= out of range, 2 = spike, 3 = large variance     no none   0 3      
qc_flag_ustar QC flag on variable ustar 0=ok, 1= too low, 2=positive u'w'     no none   0 3      
qc_flag_co2stor QC flag on CO2 stored below sensor 0=two co2 profiles exist in half hour; 1= one co2 profile exists in half hour; 2=no co2 exist in half hour     no none   0 3      
bar_pres barometric pressure kPa     yes atmospheric state 2m 94 101      
t_air mean air temperature (upper level) C     yes atmospheric state see z_upper -20 50      
rh mean relative humidity (upper level) %     yes atmospheric state see z_upper 0 100      
site_lat site latitude degrees N     no N/A N/A 30 40      
site_long site longitude degrees W     no N/A N/A 90 100      
site_elev site elevation m A.M.S.     no N/A N/A 300 350      
zm height of flux instruments m     no N/A N/A 0 60