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scientists from nasa's goddard space

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flight center along with their

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international collaborators have

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demonstrated a new method for mapping

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the location and size of trees growing

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outside of forests

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the big surprise they discovered an

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unexpectedly high number of trees in

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semi-arid regions often thought of as

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too dry to support plant life

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mapping non-forest trees with this level

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of precision was previously impossible

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across broad areas

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this technology represents a

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breakthrough for mapping and measuring

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these trees

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using powerful supercomputers and

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machine learning algorithms the team

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mapped the crown size which is the width

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of a tree when viewed from above of more

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than 1.8 billion trees across an area of

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more than half a million square miles

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this study is the first in a series

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whose goal is not only to map non-forest

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trees across a wide area but also to

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calculate how much carbon they store

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vital information for understanding the