. Author manuscript; available in PMC: 2020 Sep 16.

Published in final edited form as: Remote Sens Environ. 2017 Oct 13;204:931–941. doi: 10.1016/j.rse.2017.08.025

Table 1:

SMAP data products that are or will be in routine operational production.

Product	Description	Grid Resolution	Latency
L1A_Radiometer	Radiometer telemetry in time order	N\A	12 hrs
L1B_TB	Radiometer time-ordered T_B	N\A	12 hrs
L1C_TB	Radiometer gridded T_B	36 km	12 hrs
L1C_TB_E*	Radiometer gridded T_B (enhanced)	9 km	12 hrs
L2_SM_P	Soil moisture (radiometer)	36 km	24 hrs
L2_SM_P_E *	Soil moisture (radiometer, enhanced)	9 km	24 hrs
L2_SM_SP *	Soil moisture (radiometer + Sentinel-i radar)	3 km	Best effort
L3_FT_P *	Freeze/thaw state (radiometer)	36 km	50 hrs
L3_FT_P_E *	Freeze/thaw state (radiometer, enhanced)	9 km	50 hrs
L3_SM_P	Soil moisture (radiometer)	36 km	50 hrs
L3_SM_P_E *	Soil moisture (radiometer, enhanced)	9 km	50 hrs
L4_SM	Soil moisture (surface and root zone)	9 km	7 days
L4_C	Carbon net ecosystem exchange (NEE)	9 km	ays