Category Archives: Oceans

Can observations of the ocean help predict the weather?

By Amos Lawless It has long been recognized that there are strong interactions between the atmosphere and the ocean. For example, the sea surface temperature affects what happens in the lower boundary of the atmosphere, while heat, momentum and moisture … Continue reading

Posted in Boundary layer, data assimilation, Numerical modelling, Oceans, Weather forecasting | Leave a comment

It melts from the top too …

By David Ferreira The global sea level rises at about 3 mm/year. Oceans absorb nearly 90% of the heat trapped in the atmosphere by anthropogenic gases like carbon dioxide. As water warms, it expands: this effect explains about half of … Continue reading

Posted in antarctica, Climate, Cryosphere, Oceans, Polar | Tagged | Leave a comment

The physics behind a physics scheme

By Alan Grant When I joined the Met Office (or, as it was then, The Meteorological Office), I was posted to the boundary layer group. I spent a number of years investigating the atmospheric boundary layer, using data from aircraft … Continue reading

Posted in Boundary layer, Environmental physics, Numerical modelling, Oceans, Waves | Leave a comment

An update on the North Atlantic cold blob (January 2017)

by Pablo Ortega One of the most remarkable climate events in the last two years has been an exceptional cooling in the eastern sub-polar North Atlantic (ESPNA, Figure 1), commonly referred to as “the cold blob”. Occurring while the planet … Continue reading

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Earth System Modelling in the UK

By Till Kuhlbrodt Making climate projections for the next couple of decades is a pressing and complex task for the global climate modelling community. One of the most important purposes of modelling the future climate is to provide society and Government … Continue reading

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The driving mechanism of large-scale unsteady currents in the ocean

By Antoine Hochet During the last twenty years, measurements of the ocean surface properties by satellite instruments have significantly increased our knowledge of ocean dynamics. One of these instruments is an altimeter that measures the topography of the ocean surface … Continue reading

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The fair breeze blew, the white foam flew …

By Ray Bell In winter-time when the temperature gradient between the pole and the equator sharpens, the North Atlantic becomes a breeding ground for intense storms (extratropical cyclones). Occasionally associated with intense winter storms is a ‘phenomenal sea state’ (WMO … Continue reading

Posted in Environmental hazards, extratropical cyclones, Oceans | Tagged | Leave a comment