Knowledge Base

SMAP
SMAP - FAQ
Why do the soil moisture values in the SMAP Level-4 data vary from what I expect in a particular region?

There are a few reasons that the soil moisture data values in SMAP ... Read more
Do you have code for reading SMAP data into MATLAB, Python, IDL, or NCL?

The ... Read more
What are the latencies for SMAP radiometer data sets?

The following table describes both the required and actual latencies ... Read more
Why does the root zone soil moisture in the SMAP Level-4 soil moisture products vary in such close unison with the surface soil moisture?

The surface and root zone soil moisture estimates in the SMAP Level-4 ... Read more
Why don't the SMAP enhanced soil moisture products include landcover class?

While the standard SMAP Level-2 and -3 radiometer soil moisture ... Read more
What data subsetting, reformatting, and reprojection services are available for SMAP data?

The following table describes the data subsetting, reformatting, and ... Read more
How are the enhanced SMAP radiometer products generated and what are the benefits of using these products?

There is considerable overlap of the SMAP radiometer footprints, or ... Read more
SMAP - How To
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I access data using OPeNDAP?

Data can be programmatically accessed using NSIDC’s OPeNDAP Hyrax ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I access data using OPeNDAP?

Data can be programmatically accessed using NSIDC’s OPeNDAP Hyrax ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I search, order, and customize SMAP data using Earthdata Search?

This video tutorial and ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I visualize SMAP data in Worldview?

This video tutorial ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How to read SMAP data into MATLAB, Python, IDL, or NCL

The ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How to import and geolocate SMAP Level-3 and Level-4 data in ENVI

The following are instructions on how to import and geolocate SMAP ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How to import and geolocate SMAP Level-1C and Level-2 data in ENVI

The following are instructions on how to import and geolocate SMAP ... Read more
How do I interpret the surface and quality flag information in the Level-2 and -3 passive soil moisture products?

SMAP data files contain rich quality information that can be useful for ... Read more
How to Import SMAP HDF Data Into ArcGIS

Selected SMAP L4, Version 4 HDF data (SPL4SMAU, SPL4SMGP, & ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I programmatically request data services such as subsetting, reformatting, and reprojection using an API?

The subsetting, reformatting, and reprojection services provided by ... Read more
How do I access data using OPeNDAP?

Data can be programmatically accessed using NSIDC’s OPeNDAP Hyrax ... Read more
How do I access data using OPeNDAP?

Data can be programmatically accessed using NSIDC’s OPeNDAP Hyrax ... Read more
How to extract point and area samples of SMAP data using AppEEARS

This step-by-step tutorial demonstrates how to access NASA SMAP data ... Read more