Sea-level change refers to temporal variations in the height of the global or regional ocean surface relative to a reference datum, driven by combined effects of eustatic, isostatic, and steric processes. Eustatic change primarily arises from alterations in ocean mass, notably through glacial–interglacial ice-sheet dynamics and contemporary land ice melt. Isostatic and tectonic processes modify the vertical position of the solid Earth, producing relative sea-level change at specific locations. Steric contributions reflect temperature- and salinity-driven density changes that alter ocean volume. Quantifying sea-level change integrates tide-gauge records, satellite altimetry, gravimetry, and glacial isostatic adjustment models for reconstructing past variability and constraining projections.
Saltwater isn't something most people associate with English farmland. But in parts of eastern England, it's becoming a growing problem, not just for crops but for farm incomes too.
Agriculture
Sep 13, 2026
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26
The Pacific islands will face food shortages, and drinking water will be affected by rising seas, scientists said Wednesday, as a U.N. report found the world would fail to limit global warming to 1.5°C.
Environment
Sep 2, 2026
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26
The Antarctic coastal zone is not simply the edge of the continent. It is a tightly coupled system where ice from the ice sheet extends over the seabed, initially resting on it and farther out floating as ice shelves. Here, ...
Earth Sciences
Sep 2, 2026
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10
When high or low tide occurs, the water does not necessarily rise and fall uniformly along the entire coastline. In fact, the height of the tide in a bay can vary by up to one meter (3 feet) from one location to another just ...
Earth Sciences
Aug 30, 2026
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27
From Texas to Maine, coastal wetlands and marshes are releasing more than 1.45 billion pounds (660,000 metric tons) of carbon into the ocean each year, according to new research supported by NASA. Coastal marshes, like forests ...
Earth Sciences
Aug 25, 2026
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20
Between 2021 and 2023, Antarctica appeared to be growing. Heavy snowfall fueled by wetter weather caused parts of the continent to gain mass, leading some to question whether climate change is really causing the ice to melt. ...
Earth Sciences
Aug 19, 2026
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53
The latest update of nationwide flood maps, to be released next year, will give communities across New Zealand the clearest picture yet of the regional risk of flooding.
Environment
Aug 13, 2026
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11
With approximately one-third of the world's population living within a day's walk of a coastline, sea-level rise poses a serious global threat. Every centimeter of sea-level rise could displace 1.5 million people, and current ...
Earth Sciences
Aug 12, 2026
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97
According to the 36th annual State of the Climate report, greenhouse gas concentrations, global sea level and ocean heat content all reached record highs in 2025.
Environment
Aug 10, 2026
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101
El Niños and La Niñas are the third-most dominant influences on Earth's climate, after the sun and the greenhouse effect. But they haven't been easy to decipher or to predict in terms of when they will happen and what exact ...
