Search
Search ×

Arctic Report Card: Update for 2018

Effects of persistent Arctic warming continue to mount

Archive of previous Arctic Report Cards >

2018 Arctic Report Card Home >

About

Vital Signs

Other Indicators

Frostbites

More Information

Arctic Essays

2018 Headlines

Effects of persistent Arctic warming continue to mount

Continued warming of the Arctic atmosphere and ocean are driving broad change in the environmental system in predicted and, also, unexpected ways. New emerging threats are taking form and highlighting the level of uncertainty in the breadth of environmental change that is to come.

Highlights

  • Surface air temperatures in the Arctic continued to warm at twice the rate relative to the rest of the globe. Arctic air temperatures for the past five years (2014-18) have exceeded all previous records since 1900.
  • In the terrestrial system, atmospheric warming continued to drive broad, long-term trends in declining terrestrial snow cover, melting of the Greenland Ice Sheet and lake ice, increasing summertime Arctic river discharge, and the expansion and greening of Arctic tundra vegetation.
  • Despite increase of vegetation available for grazing, herd populations of caribou and wild reindeer across the Arctic tundra have declined by nearly 50% over the last two decades.
  • In 2018 Arctic sea ice remained younger, thinner, and covered less area than in the past. The 12 lowest extents in the satellite record have occurred in the last 12 years.
  • Pan-Arctic observations suggest a long-term decline in coastal landfast sea ice since measurements began in the 1970s, affecting this important platform for hunting, traveling, and coastal protection for local communities.
  • Spatial patterns of late summer sea surface temperatures are linked to regional variability in sea-ice retreat, regional air temperature, and advection of waters from the Pacific and Atlantic oceans.
  • In the Bering Sea region, ocean primary productivity levels in 2018 were sometimes 500% higher than normal levels and linked to a record low sea ice extent in the region for virtually the entire 2017/18 ice season.
  • Warming Arctic Ocean conditions are also coinciding with an expansion of harmful toxic algal blooms in the Arctic Ocean and threatening food sources.
  • Microplastic contamination is on the rise in the Arctic, posing a threat to seabirds and marine life that can ingest debris.
Print

x

Focus Areas

Arctic Report Card

Tracking recent environmental changes relative to historical records

More

Oceans

Conserving and managing our Arctic Ocean resources

Weather

Providing weather information to protect lives, property, and management

More

Satellites

Observing the Arctic ocean and atmosphere to understand and forecast Arctic change

More

Research

Providing environmental intelligence to understanding the complex Arctic system

More

Fisheries

Conserving and managing Arctic living marine resources and their habitats

More

ArcticProgram_edit

CONTACT US

Feel free to contact us and find out more about the Arctic Program

Copyright 2019 by Arctic Program Terms Of Use Privacy Statement
Back To Top