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What is SMAP

SMAP
 Soil Moisture Active Passive 

What is the purpose: 
An orbiting observatory that measures the amount of water in the top 5 cm (2 inches) of soil everywhere on Earth’s surface for every 2 -3 days.
Image by _Marion from Pixabay 
It produces global maps of soil moisture, so creating a vast applications around the globe, It can be used for weather and climate studies.

image source: NASA SMAP
Publications http://smap.jpl.nasa.gov/science/publications/

Data
http://smap.jpl.nasa.gov/data/

Tutorials
http://smap.jpl.nasa.gov/tutorial/

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