Researchers looking at Landsat imagery over a 20-year period in Northern Quebec have shown an increase in shrubs and grasses with a warming world. The detailed study is one of the first to show detailed views of the impact of warming on plant distribution and density in northern areas of North America.
Much of the details to date have been based on computer predictions, which have shown a dramatic change in vegetation over time. Many have questioned why we weren’t seeing such changes already. With this study we see the subtle, but real, change over time.
The long look and consistent look of the Landsat imagery made it possible to focus on the ‘greenness’ measurement of plants during peak summer growing seasons from 1986 to 2010.
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