• On Wednesday, November 20 from 9:00 a.m. to 2:30 p.m. (US Mountain Time), the following data collections may not be available due to a planned system maintenance: ASO, AMSR Unified, AMSR-E, Aquarius, High Mountain Asia, IceBridge, ICESat/GLAS, ICESat-2, LVIS, MEaSUREs, MODIS, Nimbus, SMAP, SnowEx, SSM/I-SSMIS and VIIRS. Users of the SMAP near real-time products should use the NASA LANCE HTTPS File System for data access. 

Soil Moisture Active Passive Data (SMAP)

Documentation

ATBDs

General Resources

Quality Assessment Reports

Product Specification Documents

Validation Campaign Documents