Arctic region of North America is getting greener due to climate change and almost a 3/4th of land cover are like moving landscapes found in warmer ecosystems by NASA study.

About 87,000 images are taken from Landsat satellite made the data that reflects the amount of healthy vegetation on the land that which reflected. Western Alaska, Quebec, and other regions became this greener in the period between 1984 and 2012 say the researchers. 

This is further supported by previous work that shows changing vegetation in Boreal North America and Arctic. The longest continuous space-based record of Earth land vegetation is provided by Landsat satellite.

Soils in these regions are also changed due to longer seasons for plants to grow as the temperatures are warming faster everywhere in Arctic region. The grassy tundras are changing to shrublands and shrubs which are growing bigger and denser that could impact on regional water energy and carbon cycles.

“The resolution with Landsat is drastically improved, it lets you look at the local effects of things like topography, such as in areas where you might have small woodlands or open areas,” Masek said.

The amount of visible and near-infrared light is reflected by green leafy vegetation of trees to characterize the vegetation by Landsat missions. The scientists would classify those areas if the vegetation is sparser.

The resolutions are better-classified data from Landsat also were able to mask the areas that covered in water and find out the vegetation changes says the researchers.