Variables in NIWOT02 5-Minute Data Set

Most variables will have a "time" dimension, indicating they are time-series variables. Variables with a "station" dimension were sampled at more than one station or site.

Variables with a "sample" dimension are available at a resolution of 1/sample times the resolution of the dataset. For example, in a file of 5 minute statistics, a sample dimension of 5 indicates that the variable is available at 1 minute resolution.

For more information on variable names, see the ISFF Variable Name Convention .

Variables that were slowly sampled (usually once per second, or less) start with an upper case character (P, RH, T, etc). Lower case is used for more rapidly sampled variables, typically those used in eddy correlation, like u,v,w,tc,h2o, etc.

Higher moments are represented by products of variables, separated by single quotes. For example, u'v' is the covariance of u and v.

To save space, third and fourth moments of eddy correlation variables aren't listed in the table, but are available in the datasets.

Standard NetCDF variable names should only contain alphanumeric characters and underscores. Therefore, in Netcdf files the actual variable names will be the variable name shown here, with underscores substituted for periods and quotes. The variable name shown in this table will be saved as the "short_name" attribute of the Netcdf variable.

Variable Name	Description	Units	Dimension	Sensor	Notes
base_time	Seconds since 1970 Jan 1 00:00 GMT	seconds
time	Seconds since base_time	seconds	time
CO2abs.cellA.licorA.s2			time
CO2abs.cellA.licorB.s2			time
CO2abs.cellB.licorA.s2			time
CO2abs.cellB.licorB.s2			time
CO2mr.cellA.licorA.s2		um/m	time
CO2mr.cellA.licorB.s2		um/m	time
CO2mr.cellB.licorA.s2		um/m	time
CO2mr.cellB.licorB.s2		um/m	time
CO2raw.cellA.licorA.s2			time
CO2raw.cellA.licorB.s2			time
CO2raw.cellB.licorA.s2			time
CO2raw.cellB.licorB.s2			time
diag.10m.s2			time
diag.1m			time x station
diag.6m			time x station
Flow.licorA.s2		V	time
Flow.licorB.s2		V	time
H2O.cellA.licorA.s2		mm/m	time
H2O.cellA.licorB.s2		mm/m	time
H2O.cellB.licorA.s2		mm/m	time
H2O.cellB.licorB.s2		mm/m	time
kh2o.10m.s2		g/m^3	time
kh2o.1m		g/m^3	time x station
kh2o.6m		g/m^3	time x station
kh2o'kh2o'.10m.s2		(g/m^3)^2	time
kh2o'kh2o'.1m		(g/m^3)^2	time x station
kh2o'kh2o'.6m		(g/m^3)^2	time x station
kh2oV.10m.s2		mV	time
kh2oV.1m		mV	time x station
kh2oV.6m		mV	time x station
Plicor.cellB.licorA.s2		kPa	time
Plicor.cellB.licorB.s2		kPa	time
P	Barometric Pressure	mb	time x station
RH.10m.s2	Rel. Humidity	%	time
RH.1m	Rel. Humidity	%	time x station
RH.3m.s2	Rel. Humidity	%	time
RH.6m	Rel. Humidity	%	time x station
RHlicor.licorA.s2		%	time
RHlicor.licorB.s2		%	time
T.10m.s2	Air Temp	degC	time
T.1m	Air Temp	degC	time x station
T.3m.s2	Air Temp	degC	time
T.6m	Air Temp	degC	time x station
Tbaro		degC	time x station
Tbox.cosmos	Electronics Temp	degC	time
tc.10m.s2	Virtual Temperature	degC	time
tc.1m	Virtual Temperature	degC	time x station
tc.3m	Virtual Temperature	degC	time x station
tc.6m	Virtual Temperature	degC	time x station
tcflag.10m.s2	Spike fract for tc		time
tcflag.1m	Spike fract for tc		time x station
tcflag.3m	Spike fract for tc		time x station
tcflag.6m	Spike fract for tc		time x station
tc'tc'.10m.s2	tc variance	(degC)^2	time
tc'tc'.1m	tc variance	(degC)^2	time x station
tc'tc'.3m	tc variance	(degC)^2	time x station
tc'tc'.6m	tc variance	(degC)^2	time x station
Tirga.licorA.s2		degC	time
Tirga.licorB.s2		degC	time
u.10m.s2	Sonic U Wind Comp	m/s	time
u.1m	Sonic U Wind Comp	m/s	time x station
u.3m	Sonic U Wind Comp	m/s	time x station
u.6m	Sonic U Wind Comp	m/s	time x station
uflag.10m.s2	Spike fract for u		time
uflag.1m	Spike fract for u		time x station
uflag.3m	Spike fract for u		time x station
uflag.6m	Spike fract for u		time x station
u'kh2o'.10m.s2		m/s g/m^3	time
u'kh2o'.1m		m/s g/m^3	time x station
u'kh2o'.6m		m/s g/m^3	time x station
usamples.3m	# of samples averaged		time x station
usamples.6m	# of samples averaged		time x station
u'tc'.10m.s2	u tc covariance	m/s degC	time
u'tc'.1m	u tc covariance	m/s degC	time x station
u'tc'.3m	u tc covariance	m/s degC	time x station
u'tc'.6m	u tc covariance	m/s degC	time x station
u'u'.10m.s2	u variance	(m/s)^2	time
u'u'.1m	u variance	(m/s)^2	time x station
u'u'.3m	u variance	(m/s)^2	time x station
u'u'.6m	u variance	(m/s)^2	time x station
u'v'.10m.s2	u v covariance	(m/s)^2	time
u'v'.1m	u v covariance	(m/s)^2	time x station
u'v'.3m	u v covariance	(m/s)^2	time x station
u'v'.6m	u v covariance	(m/s)^2	time x station
u'w'.10m.s2	u w covariance	(m/s)^2	time
u'w'.1m	u w covariance	(m/s)^2	time x station
u'w'.3m	u w covariance	(m/s)^2	time x station
u'w'.6m	u w covariance	(m/s)^2	time x station
v.10m.s2	Sonic V Wind Comp	m/s	time
v.1m	Sonic V Wind Comp	m/s	time x station
v.3m	Sonic V Wind Comp	m/s	time x station
v.6m	Sonic V Wind Comp	m/s	time x station
vflag.10m.s2	Spike fract for v		time
vflag.1m	Spike fract for v		time x station
vflag.3m	Spike fract for v		time x station
vflag.6m	Spike fract for v		time x station
v'kh2o'.10m.s2		m/s g/m^3	time
v'kh2o'.1m		m/s g/m^3	time x station
v'kh2o'.6m		m/s g/m^3	time x station
vsamples.3m	# of samples averaged		time x station
vsamples.6m	# of samples averaged		time x station
v'tc'.10m.s2	v tc covariance	m/s degC	time
v'tc'.1m	v tc covariance	m/s degC	time x station
v'tc'.3m	v tc covariance	m/s degC	time x station
v'tc'.6m	v tc covariance	m/s degC	time x station
v'v'.10m.s2	v variance	(m/s)^2	time
v'v'.1m	v variance	(m/s)^2	time x station
v'v'.3m	v variance	(m/s)^2	time x station
v'v'.6m	v variance	(m/s)^2	time x station
v'w'.10m.s2	v w covariance	(m/s)^2	time
v'w'.1m	v w covariance	(m/s)^2	time x station
v'w'.3m	v w covariance	(m/s)^2	time x station
v'w'.6m	v w covariance	(m/s)^2	time x station
w.10m.s2	Sonic W Wind Comp	m/s	time
w.1m	Sonic W Wind Comp	m/s	time x station
w.3m	Sonic W Wind Comp	m/s	time x station
w.6m	Sonic W Wind Comp	m/s	time x station
wflag.10m.s2	Spike fract for w		time
wflag.1m	Spike fract for w		time x station
wflag.3m	Spike fract for w		time x station
wflag.6m	Spike fract for w		time x station
w'kh2o'.10m.s2		m/s g/m^3	time
w'kh2o'.1m		m/s g/m^3	time x station
w'kh2o'.6m		m/s g/m^3	time x station
wsamples.3m	# of samples averaged		time x station
wsamples.6m	# of samples averaged		time x station
w'tc'.10m.s2	w tc covariance	m/s degC	time
w'tc'.1m	w tc covariance	m/s degC	time x station
w'tc'.3m	w tc covariance	m/s degC	time x station
w'tc'.6m	w tc covariance	m/s degC	time x station
w'w'.10m.s2	w variance	(m/s)^2	time
w'w'.1m	w variance	(m/s)^2	time x station
w'w'.3m	w variance	(m/s)^2	time x station
w'w'.6m	w variance	(m/s)^2	time x station