Table 2.

Overview of the ISMN (Dorigo et al., 2011). Shown are the location, number of stations per network and the network-specific reference.

Network	location	# stations	reference
Dahra	Senegal	1	(Tagesson et al., 2015)
FMI	Finland	27	(Dorigo et al., 2011)
iRON	USA	6	(Taylor et al., 2015)
PBO H2O	USA	161	(Larson et al., 2008)
REMEDHUS	Spain	24	(Sanchez et al., 2012)
RSMN	Romania	20	(Dorigo et al., 2011)
SCAN	USA	181	(Schaefer et al., 2007)
SMOSMANIA	France	21	(Calvet et al., 2007)
SNOTEL	USA	441	(Leavesley et al., 2008)
SOILSCAPE	USA	171	Moghaddam et al., 2016)
USCRN	USA	115	(Diamond et al., 2013)