Since this record-keeping began in the early 1980s—the other squiggly lines are previous years—the global average for the world’s ocean surfaces has oscillated seasonally between 19. But they can say that the longer-term trend since the early 1900s, averaged globally, shows a rise in the intensity of sea surface temperature anomalies, as you can see in the graph above. org survives—and thrives—in Amazon’s worldquest for longevity is already overwar on passwords enters a chaotic new phaseChatGPT can help doctors—and hurt patientsdispose of your electronics