Skip to main content

Mapping Arctic Warming

Like a giant ice cream cake left outside on a hot summer day, the Arctic is melting. In the land of frozen Earth, new wetlands are appearing, as are lake-sized puddles and kilometers-long rivulets of meltwater. Scientists have long known about thermokarst—areas where permafrost has thawed and given way to land surface collapse and eroded gullies. But until now, they did not know just how much of the Arctic landscape was susceptible to thermokarst.

According to new research, it makes up roughly 20 percent of the northern permafrost region. Thermokarst landscapes store as much as half of the region’s soil organic carbon (SOC)—a potentially significant source of future greenhouse gasses.



The maps above, which show the northernmost latitudes of North America and Eurasia, were created using data from the study. The map below offers a closer look at Siberia. The different colors reflect the types of landscapes—wetlands, lakes, hillslopes, etc.—where thermokarst is likely to be found today and where it is most likely to form in the future. The darker the color, the higher percentage of the landscape is covered by that landform. Coverage is classified as very high when 60 to 100 percent of the land fits into that category. High means 30 to 60 percent coverage; Moderate is 10 to 30 percent, and low is below 10 percent. Hillslope thermokarst landscapes do not reach very high levels, the researchers found.

In places where the permafrost has melted and become thermokarst, wetlands were the most prevalent landform, accounting for nearly 8 percent of the northern landscape. Lake thermokarst covered 7 percent and hillslope thermokarst was prevalent in 5 percent of the area. However, thermokarst landscapes sometimes overlapped, accounting for the marbled appearance of the maps.

Via NASA http://earthobservatory.nasa.gov/IOTD/view.php?id=89434& Nature.com

This post may contain affiliate links. As an Amazon Associate, I earn from qualifying purchases.


Popular posts from this blog

Find cities with similar climate

This map has been created using The Global environmental stratification. The Global environmental stratification (GEnS), based on statistical clustering of bioclimate data (WorldClim). GEnS, consists of 125 strata, which have been aggregated into 18 global environmental zones (labeled A to R) based on the dendrogram. Interactive map >> Via www.vividmaps.com Related posts: -  Find cities with similar climate 2050 -  How global warming will impact 6000+ cities around the world?

The Appalachian Mountains, the Scottish Highlands, and the Atlas Mounts in Africa were the same mountain range

The Central Pangean Mountains was a prominent mountain ridge in the central part of the supercontinent Pangaea that extends across the continent from northeast to southwest through the Carboniferous , Permian Triassic periods. The mountains were formed due to a collision within the supercontinents Gondwana and Laurussia during the creation of Pangaea. It was comparable to the present Himalayas at its highest peak during the start of the Permian period. It isn’t easy to assume now that once upon a time that the Scottish Highlands, The Appalachian Mountains, the Ouachita Mountain Range, and the Atlas Mountains in northwestern Africa are the same mountains , once connected as the Central Pangean Mountains.

Human Emotions Visualized

Despite significant diversity in the culture around the globe, humanity's DNA is 99.9 percent alike. There are some characteristics more primary and typical to the human experience than our emotions. Of course, the large spectrum of emotions we can feel can be challenging to verbalize. That's where this splendid visualization by the Junto Institute comes in. This visualization is the newest in an ongoing attempt to categorize the full range of emotions logically. Our knowledge has come a long route since William James suggested 4 primary emotions: fear, grief, love, and rage. These kernel emotions yet form much of the basis for current frameworks. The Junto Institute's visualization above classifies 6 basic emotions: fear, anger, sadness, surprise, joy, love More nuanced descriptions begin from these 6 primary emotions, such as jealousy as a subset of anger and awe-struck as a subset of surprise. As a result, there are 102 second-and third-order emotions placed on this emo