![2021 Arctic Report Card: Greenland ice loss below average in 2021 despite late-season melt spike](/sites/default/files/2022-01/ARC2021_greenland_ice_rotator.jpg)
Greenland has lost ice mass every year since 1998. Losses in 2021 would have added about 0.2 millimeters to global sea level.
A record-warm autumn boosted Arctic 2020-21 surface temperatures to the rank of seventh-warmest year on record since 1900.
Climate change is transforming the Arctic into a ‘dramatically different state.’ Browse this collection of image highlights from NOAA's 2021 Arctic Report Card.
![December 2021 U.S. Climate Outlook: A La Niña-like pattern with warmth over much of the U.S.](/sites/default/files/2021-12/rotator_US_outlook_December2021_700x467_0.jpg)
The December 2021 climate outlook favors a warmer-than-average end to 2021 for much of the country, with odds tilted towards a drier-than-average December for the Southeast
![Climate.gov marine ecosystem Tweet chat](/sites/default/files/2021-10/Pacific_rotator480.png)
In a tweet chat featuring four NOAA marine experts, learn about the National Marine Ecosystem Status website, how to use it, and why you should care about the health of marine ecosystems.
![Global climate summary for September 2021](/sites/default/files/2021-10/Global_Sept2021_rotator_700x467.jpg)
It was the fifth-warmest September on record, and the East Asian summer monsoon was especially wet.
![Interactive map: El Niño likely to boost high-tide flood days along U.S. coasts in 2018](/sites/default/files/2021-10/High_tide_flooding_ENSO_700x467.jpg)
Costly and inconvenient, high-tide flooding of coastal communities is on the rise. Thanks to higher water levels from El Niño and sea level rise, the number of high-tide flood days in 2018 is projected to be 60% higher this year than would have been common around 2000. Find out what's predicted for your city in this interactive map.
![Even small additional increases in greenhouse gases will make decades-long “megadroughts” in the Southwest more common](/sites/default/files/2021-09/FI_soilmoisture_SW_20210921_rotator_700x467_compare.png)
But lower emissions will reduce the intensity of the driest years of megadrought events.
![Map image for A late-summer heatwave and rain at Greenland's summit](/sites/default/files/styles/width_320/public/2021-09/SWGreenland_AMO_23Aug2021_700x466.jpg?itok=lLAOQ2K7)
A late-summer heatwave and rain at Greenland's summit
August 24, 2021
![Release of the IPCC 6th Assessment Report from Working Group 1](/sites/default/files/2021-09/IPCC-AR6_700.jpg)
The findings of their review of more than 14,000 studies are clear: climate change is affecting nearly every part of the planet, and there is no doubt that human activities are the cause.