Variables in ATST 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
diag.15m			time
diag.25m			time
diag.6m			time
Dir.bb	Wind Direction	deg	time
kh2o.15m		g/m^3	time
kh2o.25m		g/m^3	time
kh2o.6m		g/m^3	time
kh2o'kh2o'.15m		(g/m^3)^2	time
kh2o'kh2o'.25m		(g/m^3)^2	time
kh2o'kh2o'.6m		(g/m^3)^2	time
kh2oV.15m		V	time
kh2oV.25m		V	time
kh2oV.6m		V	time
P.bb	Barometric Pressure	mb	time
RH.bb	Rel. Humidity	%	time
Spd.bb	Wind Speed	m/s	time
SpdMax.bb		m/s	time
T.base	Air Temp	degC	time
T.bb	Air Temp	degC	time
tc.15m	Virtual Temperature	degC	time
tc.25m	Virtual Temperature	degC	time
tc.6m	Virtual Temperature	degC	time
tcflag.15m	Spike fract for tc		time
tcflag.25m	Spike fract for tc		time
tcflag.6m	Spike fract for tc		time
tc'tc'.15m	tc variance	(degC)^2	time
tc'tc'.25m	tc variance	(degC)^2	time
tc'tc'.6m	tc variance	(degC)^2	time
u.15m	Sonic U Wind Comp	m/s	time
u.25m	Sonic U Wind Comp	m/s	time
u.6m	Sonic U Wind Comp	m/s	time
uflag.15m	Spike fract for u		time
uflag.25m	Spike fract for u		time
uflag.6m	Spike fract for u		time
u'kh2o'.15m		m/s g/m^3	time
u'kh2o'.25m		m/s g/m^3	time
u'kh2o'.6m		m/s g/m^3	time
u'tc'.15m	u tc covariance	m/s degC	time
u'tc'.25m	u tc covariance	m/s degC	time
u'tc'.6m	u tc covariance	m/s degC	time
u'u'.15m	u variance	(m/s)^2	time
u'u'.25m	u variance	(m/s)^2	time
u'u'.6m	u variance	(m/s)^2	time
u'v'.15m	u v covariance	(m/s)^2	time
u'v'.25m	u v covariance	(m/s)^2	time
u'v'.6m	u v covariance	(m/s)^2	time
u'w'.15m	u w covariance	(m/s)^2	time
u'w'.25m	u w covariance	(m/s)^2	time
u'w'.6m	u w covariance	(m/s)^2	time
v.15m	Sonic V Wind Comp	m/s	time
v.25m	Sonic V Wind Comp	m/s	time
v.6m	Sonic V Wind Comp	m/s	time
vflag.15m	Spike fract for v		time
vflag.25m	Spike fract for v		time
vflag.6m	Spike fract for v		time
v'kh2o'.15m		m/s g/m^3	time
v'kh2o'.25m		m/s g/m^3	time
v'kh2o'.6m		m/s g/m^3	time
v'tc'.15m	v tc covariance	m/s degC	time
v'tc'.25m	v tc covariance	m/s degC	time
v'tc'.6m	v tc covariance	m/s degC	time
v'v'.15m	v variance	(m/s)^2	time
v'v'.25m	v variance	(m/s)^2	time
v'v'.6m	v variance	(m/s)^2	time
v'w'.15m	v w covariance	(m/s)^2	time
v'w'.25m	v w covariance	(m/s)^2	time
v'w'.6m	v w covariance	(m/s)^2	time
w.15m	Sonic W Wind Comp	m/s	time
w.25m	Sonic W Wind Comp	m/s	time
w.6m	Sonic W Wind Comp	m/s	time
wflag.15m	Spike fract for w		time
wflag.25m	Spike fract for w		time
wflag.6m	Spike fract for w		time
w'kh2o'.15m		m/s g/m^3	time
w'kh2o'.25m		m/s g/m^3	time
w'kh2o'.6m		m/s g/m^3	time
w'tc'.15m	w tc covariance	m/s degC	time
w'tc'.25m	w tc covariance	m/s degC	time
w'tc'.6m	w tc covariance	m/s degC	time
w'w'.15m	w variance	(m/s)^2	time
w'w'.25m	w variance	(m/s)^2	time
w'w'.6m	w variance	(m/s)^2	time