Satellite Data Reveals Ocean Mass and Ice Melt Driving Accelerating Global Sea-Level Rise A Clear Signal of Climate Change Global mean sea level (GMSL) has long been recognized as one of the most crucial indicators of climate change. For decades, scientists have warned that warming oceans and melting ice are reshaping coastlines worldwide. Now, a groundbreaking study from The Hong Kong Polytechnic University (PolyU) has delivered the first accurate 30-year record (1993-2022) of global ocean mass change , providing unprecedented clarity on the pace and drivers of sea-level rise. The research, published in the Proceedings of the National Academy of Sciences (PNAS) , confirms that GMSL has been increasing at an average of 3.3 mm per year , with a significant acceleration in recent decades. This trend underscores the escalating consequences of climate warming, particularly the rapid loss of land ice. Why Sea-Level Rise Matters Two Key Drivers of Rising Seas According to climate science, ...
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