The majority of SMAP data sets, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), are now available as customizable data subscriptions. Data subscriptions automatically deliver new data as they become available; deliveries can be made on an hourly, daily, weekly, or monthly basis, depending on your preference. This new service also allows you to apply customization options to your order, including reformatting, reprojecting, and spatial and parameter subsetting. For more information on setting up the subscription, read the NSIDC DAAC Data Subscription Requests help article.
Visit the NSIDC DAAC SMAP data collection to explore data and documentation.