What are the latencies for SMAP radiometer data sets?

The following table describes both the required and actual latencies for the different SMAP radiometer data sets. Latency is defined as the time (# days, hh:mm:ss) from data acquisition to product generation.

Short nameTitleLatency
  

Required
# days hh:mm:ss

Actual (mean): Mean latency under normal operating conditions
# days hh:mm:ss

SPL1APSMAP L1A Radiometer Time-Ordered Parsed Telemetry0 days 12:00:000 days 4:02:54
SPL1BTBSMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures0 days 12:00:000 days 5:05:17
SPL1CTBSMAP L1C Radiometer Half-Orbit 36 km EASE-Grid Brightness Temperatures1 day 00:00:000 days 5:05:59
SPL1CTB_ESMAP Enhanced L1C Radiometer Half-Orbit 9 km EASE-Grid Brightness Temperatures1 day 00:00:000 days 7:41:59
SPL2SMPSMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture1 day 00:00:000 days 12:11:39
SPL2SMP_ESMAP Enhanced L2 Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture1 day 00:00:000 days 12:56:55
SPL3SMPSMAP L3 Radiometer Global Daily 36 km EASE-Grid Soil Moisture2 days 02:00:001 day 05:33:38
SPL3SMP_ESMAP Enhanced L3 Radiometer Global Daily 9 km EASE-Grid Soil Moisture2 days 02:00:001 day 05:34:25
SPL3FTPSMAP L3 Radiometer Northern Hemisphere Daily 36 km EASE-Grid Freeze/Thaw State2 days 02:00:001 day 02:51:18
SPL3FTP_ESMAP Enhanced L3 Radiometer Northern Hemisphere Daily 9 km EASE-Grid Freeze/Thaw State2 days 02:00:001 day 03:34:16
SPL4SMAUSMAP L4 Global 3-hourly 9 km Surface and Rootzone Soil Moisture Analysis Update7 days 00:00:002 days 15:53:00
SPL4SMGPSMAP L4 Global 3-hourly 9 km Surface and Rootzone Soil Moisture Geophysical Data7 days 00:00:002 days 15:53:00
SPL4SMLMSMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Land Model ConstantsN/A *SPL4SMLM provides time-invariant constants and thus includes only one file per data version
SPL4CMDLSMAP L4 Global Daily 9 km Carbon Net Ecosystem Exchange14 days 00:00:009 days 23:23:00

Last Updated October 2021