New study shows November-to-March precipitation (when rainy season peaks over most of the Southern Hemisphere land mass) was significantly reduced both in the Southern Hemisphere tropics and subtropics due to a weakening of the subtropical convergence zones during the mid-Pliocene Warm Period.
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CLEX researchers and colleagues investigated how El Niños may change in the future using paleoclimate data in combination with CMIP5 and CMIP6 model runs.
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CLEX researchers have demonstrated that ocean gyres (complete with a rich eddy field and strong western boundary current) occur even in the absence of wind forcing.
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CLEX and NCAR researchers explore decade-long variations in global mean temperature that are superimposed on the warming trend and find what can make short term warming trends so unpredictable.
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Northwest of Svalbard, north of Norway, an area known as Whalers Bay stays ice‐free in winter despite the negative air temperatures. It has been assumed that this open water is maintained by inflow of warm Atlantic Water along Svalbard’s west coast; however, this mechanism has never been demonstrated quantitatively -till now.
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CLEX researchers used real-world observations with satellite observations to calculate the quantity of nutrients carried into the Subantarctic Zone by mesoscale eddies. They found these eddies carried high nitrate and low silicate waters into the Subantarctic Zone.
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Picture (above): Beach. Credit: Frank McKenna (Unsplash). Revisiting ENSO atmospheric...
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Ocean salinity could be an indicator of major rain events before IOD or ENSO events have peaked. This raises the prospect that long term forecasts for Australia could be improved by analysing sea surface salinity in the Indian and Pacific oceans.
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CLEX researchers find the inclusion of upper South Pacific Ocean variability significantly improved the predictions of ENSO and PDO modes in simple linear inverse models.
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Central Europe has recently experienced extreme weather events, so researchers investigated whether this was the result of a weakening jet stream and changes to atmospheric circulation.
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Research brief: Southern ocean overturning circulation responds to SAM
Research brief: Revisiting the 1888 Centennial Drought
Research brief: The interaction of ocean basins may improve long-term climate predictions
Research brief: Indian Ocean warming modulates global atmospheric circulation trends
