Every month, NASA scientists estimate Earth’s average global temperature from measurements taken around the world. We release the data as the global temperature update. But what does it mean?

Every month, NASA scientists estimate Earth’s average global temperature from measurements taken around the world. We release the data as the global temperature update. But what does it mean? 

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Image Descriptions :

1: On the right of the slide is the leftmost third of the global equal-area map of the July 2024 temperature anomaly relative to the July 1951-1980 mean. Most of the map is in shades of red, representing warmer than average temperatures. White arrows point to the map. On top is a black box with white text that reads: Each month NASA releases a global temperature update – but what does it mean? A color bar below the text shows how color on the map corresponds to temperature anomaly in degrees Celsius.

2: The background is the middle section of the global equal-area map of the July 2024 temperature anomaly relative to the July 1951-1980 mean. Most of the map is in shades of red, representing warmer than average temperatures. On top is a black box with white text that reads: Every month, NASA scientists estimate the average global temperature from measurements taken around the world. They use weather stations, ships, buoys, and other surface sensors. A photo in the bottom left corner shows a NOAA weather station and an animation in the upper right hand corner shows the locations of temperature measurements on a globe.

3: On the left is the right section of the global equal-area map of the July 2024 temperature anomaly relative to the July 1951-1980 mean. Most of the map is in shades of red, representing warmer than average temperatures. White text against a black background reads: Each month, the monthly global temperature is compared to the baseline average for that month. NASA uses the period from 1951-1980 as its baseline. A white arrow is pointing to the words baseline. The arrow is connected to a box with text that reads: Baseline: a long-term average used for comparison purposes. The color bar from slide 1 is at the top of the slide.

4: The global equal-area map of the July 2024 temperature anomaly relative to the July 1951-1980 mean is against a black background. Most of the map is in shades of red, representing warmer than average temperatures. Below the map is white text that reads: For example, how was this July different from previous Julys? A white arrow points to the word anomaly over the color bar. The arrow is connected to a box with text that reads: This gives us “temperature anomalies” – the difference between this month and the long-term average.

5: The global equal-area map of the July 2024 temperature anomaly relative to the July 1951-1980 mean is against a black background. Most of the map is in shades of red, representing warmer than average temperatures. Below the map is white text that reads: Red areas are warmer than the baseline, while blues are cooler for the given month. White arrows point to dark red areas on the map. The arrows are connected to a box with text that reads: Dark red areas were 2 to 3° Celsius (or 3.6 to 5.4° Fahrenheit) warmer than the baseline.

6: On the right of the slide is the leftmost third of the global equal-area map of the July 2024 temperature anomaly relative to the July 1951-1980 mean. Most of the map is in shades of red, representing warmer than average temperatures. White text next to it reads: Most of the planet is warmer than average – which is part of a long-term trend.

7: The background is the middle section of the global equal-area map of the July 2024 temperature anomaly relative to the July 1951-1980 mean. Most of the map is in shades of red, representing warmer than average temperatures. Over it, is a black box with white text that reads: As greenhouse gas emissions from human activities drive rising temperatures, NASA’s global temperature record is one of our longest measures of how Earth is responding to climate change.