Greening of the Arctic

ndvi_trend_east

Period July 1982 to December 2011 year.
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March 14, 2013. Over the past three decades, the temperature in the Arctic has been growing faster than anywhere else on the planet. Because of this growing in the Far North period began to rise, leading to significant changes in the vegetation in tundra and boreal zones, also known as the taiga.

For decades, NASA and NOAA satellites continuously monitor vegetation from space. It uses tools MODIS and AVHRR for measuring the intensity of the visible and infrared spectrum reflected from the plant leaves. Scientists use these measurements to calculate the Vegetation Index (NDVI), showing the degree of activity of photosynthesis or the degree of greening the landscape.

The map shows the trend in NDVI for the period July 1982 to December 2011 in Eurasia. Shades of green indicate areas where productivity and abundance of plants increased, shades of brown — a decline of photosynthesis. In areas where no change has been detected, are white, gray highlighted areas which are not included in the analysis. The map shows the landscaping barren tundra ecosystems in the circumpolar Arctic, northern Russia and Scandinavia.

ndvi_trend_west

The period from July 1982 to December 2011 year.
Download large image (7 MB, JPEG, 2000 × 1000)

Based on: Earth Observatory
Source: The monitoring system for the environment

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