Sea surface temperature (SST) is the temperature of the ocean’s uppermost layer, typically measured within the top millimeter to several meters, depending on instrumentation and protocol. It is a fundamental variable in physical oceanography and climate science, governing air–sea heat fluxes, evaporation, and the development of atmospheric circulation patterns. SST strongly influences ocean stratification, mixed-layer dynamics, and the formation of phenomena such as El Niño–Southern Oscillation. It is observed using in situ sensors (buoys, ships, Argo floats) and satellite radiometers, with careful corrections for skin versus bulk temperature, diurnal warming, and instrumental biases to support climate monitoring and coupled model validation.
A new study involving the University of Liverpool reveals striking temperature shifts across both the oceans and the atmosphere, using an extended version of the now-iconic climate stripes visualization.
Environment
May 5, 2025
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The world's oceans are heating faster in two bands stretching around the globe, one in the southern hemisphere and one in the north, according to new research led by climate scientist Dr. Kevin Trenberth.
Earth Sciences
May 1, 2025
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The Antarctic Peninsula, one of the fastest-warming regions on Earth, has seen temperatures rise five times faster than the global average in recent decades. Extreme heat events, such as the record-breaking 20.8° C recorded ...
Earth Sciences
Apr 28, 2025
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40
The introduction of new Spotter buoys to measure wave height and direction, and temperature in the sea off Victor Harbor in South Australia, provides a timely new resource to monitor fluctuating sea conditions and their effect ...
Environment
Mar 24, 2025
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20
Global sea level rose faster than expected in 2024, mostly because of ocean water expanding as it warms, or thermal expansion. According to a NASA-led analysis, last year's rate of rise was 0.23 inches (0.59 centimeters) ...
Environment
Mar 13, 2025
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