WASHINGTON — The Arctic and its future are looking dimmer every year, a new federal report says.

In the spring and summer of 2014, Earth’s icy northern region lost more of its signature whiteness that reflects the sun’s heat. It was replaced temporarily with dark land and water that absorbs more energy, keeping yet more heat on an already warming planet, according to the Arctic report card issued Thursday.

Spring snow cover in Eurasia reached a record low in April. Arctic summer sea ice, while not setting a new record, continued a long-term, steady decline.

And Greenland set a record in August for the least amount of sunlight reflected in that month, said the peer-reviewed report from the National Oceanic and Atmospheric Administration and other agencies.

The report card was written by 63 scientists from 13 countries.