Half-hourly data from BOREAS Northern Study Area Old Black Spruce
Site (BOREAS-NOBS; TF3) near Thompson, Manitoba, Canada.
 
Missing or bad data are flagged with -999 and/or NA
Questions to Allison Dunn at adunn@deas.harvard.edu
**By downloading this data, you agree to the terms of our fair use policy
**(listed at http://www-as.harvard.edu/data/boreasdata.html)

bor.YYYY files are the half-hourly measurements for a given year
bor.94YY file contains half-hourly measurements for the entire
	 data collection period (commencing 16 May 1994)

Column			Unit		Description
jd			Days		Cumulative days; 1/1/94 = Day 1	
yr                  	Year		Year
GMT			Days		Day of year
Wspd               	m/s		Wind speed 
Wdir                	degrees		Wind direction, 0 deg = north
H			W/m2		Sensible heat flux
LE                  	W/m2		Latent heat flux
FluxCO2            	umol/m2s	CO2 flux 
StgCO2			umol/m2s	CO2 storage below 30 m
u*                  	m/s		Friction velocity
L                   	m		Monin-Obukov length
CO2			ppm		CO2 concentration
H2O_kPa             	kPa		Water vapor partial pressure
Rneti_W/m2          	W/m2		Net Radiation at 30 m
IncPPFD_umol/m2/s	umol/m2s	Photosynthetically Active Radiation
					(PAR) at 30 m
BelowPPFD_umol/m2/s 	umol/m2s	Median PAR of 8 surface probes
Prcpt_mm/30min      	mm/30min	Precipitation in 30 min. period
30m_AirT		deg C		Air temperature at 30 m
10m_AirT            	deg C		Air temperature at 10 m
2m_AirT             	deg C		Air temperature at 2 m
5cm_sph_soilT		deg C		Soil temperatures: measured
10cm_sph_soilT      	deg C		in sphagnum (sph) or feather (fea)
20cm_sph_soilT     	deg C 		moss; all depths are relative to
50cm_sph_soilT		deg C 		the moss surface.  
100cm_sph_soilT     	deg C
5cm_fea_soilT       	deg C
10cm_fea_soilT		deg C
20cm_fea_soilT      	deg C
50cm_fea_soilT      	deg C
100cm_fea_soilT		deg C
NEE                 	umol/m2s	Filled Net Ecosystem Exchange (NEE) of 
					carbon dioxide; for filling information,
					see Status
R                  	umol/m2s 	Filled Ecosystem Respiration (R) of 
					carbon dioxide; for filling information,
					see Status
GEE			umol/m2s	Filled Gross Ecosystem Exchange (GEE) of
					carbon dioxide; for filling information,
					see Status

Status			7-bit status word to describe what, if any, filling 
			technique was used on the NEE, R, and GEE data 

bit	value     description
0         1       u* < 0.2 or downwind from generator; filled with R+GEE
1         2       no PAR; PAR filled from lookup table for GEE calculation
2         4       no Tair available; filled in from airport data for R calculation
3         8       No measured NEE available; filled in with R+GEE
4         16      R flier removed by brute force
5         32      GEE flier removed by brute force
6         64      NEE flier removed by brute force