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Update: Carbon Dioxide Concentration
December concluded 2021 with a global average concentration of about 417 parts per million (ppm) of atmospheric CO₂, a nearly 49% increase since 1850 due to human activities like burning fossil fuels and deforestation.
Update: Global Temperature
Earth’s surface continues to significantly warm due to human activities, with recent global temperatures being the hottest in the past 2,000-plus years. We've updated our global temperature vital sign to reflect the latest numbers.
Update: Ocean Heat Content
Did you know that while 2021 tied for the sixth warmest year on record (continuing a long-term upward trend), the ocean experienced its warmest year on record and its highest in terms of global sea level? View the latest data and learn why ocean heat content matters.
One Year into the Biden Administration, NASA Looks to Future
Over the past year, NASA has made valuable contributions to the Biden-Harris Administration’s goals – leading on the global stage, addressing the urgent issue of climate change, creating high-paying jobs, and inspiring future generations.
Six Questions to Help You Understand the 6th Warmest Year on Record
The year 2021 tied with 2018 as the sixth warmest year on record, continuing a long-term upward trend since 1880. Here, we answer six questions to help you understand NASA's global surface temperature analysis.
Video: Global Warming from 1880 to 2021
This color-coded map shows global warming from 1880 to 2021 in degrees Celsius. Access the version in degrees Fahrenheit here.
Video: What NASA Knows from Decades of Earth System Observations
NASA's Director of Earth Science Karen St. Germain gave a hyperwall talk at the 2021 United Nations Climate Change Conference.
Images of Change: Flooding in Thailand
Heavy monsoon rains, following on the heels of tropical storms Dianmu and Kompasu, triggered landslides and flooding in Thailand in October 2021. Find out how much land and how many people were affected as a result.
Images of Change: Melting Glaciers Enlarge Lakes on Tibetan Plateau
Water from melting glaciers has created hundreds of new lakes and enlarged existing ones. View the before-and-after satellite images to see where two lakes have merged as a result of climate change.
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