Net Primary Productivity
Plants play an important role in Earth’s carbon dioxide budget. Plants take in carbon dioxide via photosynthesis during the day and give off carbon dioxide via respiration at night. The difference between carbon uptake and release by plants is the net primary production. The Moderate Resolution Imaging Spectroradiometer (MODIS) instrument on NASA’s Terra satellite monitors this carbon dioxide use.
Go to http://earthobservatory.nasa.gov ; under “Global Maps,” select the “Net Primary Productivity” map. (Page through the map options.)
Use the arrows that accompany the map to play the animation.
Click on the “Vegetation” link. Play the vegetation animation.
Go to NOAA’s Earth System Research Laboratory at www.esrl.noaa.gov/gmd/ccgg/trends to see Trends in Atmospheric Carbon Dioxide.
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