Global warming took off in the mid-1970s when the rise in global mean surface temperature exceeded natural variability. Temperatures on land and the ocean surface are breaking records this year, as shown in these graphs of daily estimates of global surface temperatures (top) and sea-surface temperatures (bottom). Author provided, based on NOAA analyses, processed by University of Maine, CC BY-SAJune had its highest global mean surface temperature, according to preliminary analysis. Rather than rising steadily, global temperatures climb in steps, usually at the end of an El Niño event. Then the warming paused and the so-called “hiatus” in global warming from 2001 to 2014 led climate change deniers to become vociferous in proclaiming global warming was a myth.

Source: The Guardian July 12, 2023 04:55 UTC