2023 was the hottest year in @NASA’s record, continuing a human-caused, long term warming trend.

2023 was a record-breaking year in many ways. We also experienced the hottest summer and fall on record, and Sept. 2023’s global temperature anomaly – deviation from the 1951-1980 baseline – was the largest on record. Each year in the last decade was in the top 10 warmest years.

The record-breaking heat was due to high greenhouse gas emissions (like carbon dioxide), the transition to El Niño conditions, and other factors that scientists are still researching. Generally, La Niña brings cooler temperatures and El Niño brings warmer temperatures. High greenhouse gas emissions from human activities and the transition out of three La Niña years were largely responsible for 2023 setting a new record.

Last year, NASA and our partners launched the U.S. Greenhouse Gas Center to share climate data for these heat-trapping gases.

Our record, called GISTEMP, is calculated from millions of measurements from thousands of weather stations on land, ships and ocean buoys, and Antarctic research stations. It uses data starting in 1880, when coverage makes it possible to reliably estimate global temperature.

Despite 2023 being the globally hottest year, individual locations may not have experienced a record warm year. However, the effects of our changing climate are felt globally, with record droughts, shifting fire seasons, and sudden, intense precipitation events.

At NASA, our unique vantage point from space is crucial to monitoring the causes and impacts of climate change – both those we’re experiencing now, and what we can expect to see in the future. We’re designing, building, and launching missions to study Earth in new ways and provide data for models that project how Earth systems will respond to rising carbon.

By working with our partners at @NOAA and other federal agencies, and making our data available to local decision-makers and people on the ground, NASA is helping the world prepare for life on a warming planet.

#Earth #NASA #Climate #ClimateChange #GlobalWarming #Science