On Wednesday, September19 from 9:00 a.m. to 12:00 p.m./noon (USA Mountain Time), the following data collections will not be available due to planned system maintenance: AMSR-E, Aquarius, ASO, High Mountain Asia, IceBridge, ICESat/GLAS, MEaSUREs, MODIS, NISE, SMAP, SnowEx, and VIIRS. 
Data Set ID: 
SPL1AP

SMAP L1A Radiometer Time-Ordered Parsed Telemetry, Version 1

Each Level-1A (L1A) data file/granule incorporates all radiometer data downlinked from the Soil Moisture Active Passive (SMAP) spacecraft for one specific half orbit. The data are scaled instrument counts of the following:

  • The first four raw moments of the fullband channel for both vertical and horizontal polarizations
  • The complex cross-correlations of the fullband channel
  • The 16 subband channels for both vertical and horizontal polarizations.
Version Summary: 

First public data release

Geographic Coverage

Parameter(s):
  • Microwave > Sensor Counts > Instrument Counts
Spatial Coverage:
  • N: 86.4, S: -86.4, E: 180, W: -180

Spatial Resolution:
  • 40 km x 40 km
Temporal Coverage:
  • 31 March 2015 to 26 October 2015
Temporal Resolution: 00:49:00
Data Format(s):
  • HDF5
Platform(s) SMAP Observatory
Sensor(s): SMAP L-BAND RADIOMETER
Version: V1
Data Contributor(s): Piepmeier, J. R., E. J. Kim, P. Mohammed, J. Peng, and C. Ruf.

Data Citation

As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Piepmeier, J. R., E. J. Kim, P. Mohammed, J. Peng, and C. Ruf. 2015. SMAP L1A Radiometer Time-Ordered Parsed Telemetry, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/3G0GFQR7OT5E. [Date Accessed].
A user guide is not available for this data set.

FAQ

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 name Title Latency Required Actual (mean1) SPL1AP SMAP L1A... read more

How To

How do I search, order, and customize SMAP data using Earthdata Search?
This video tutorial and attached PDF document provide step-by-step instructions on how to search, order, and customize SMAP data using Earthdata Search (https://search.earthdata.nasa.... read more