Global impact of oceanic variability in the subpolar North Atlantic
Research shows that decadal shifts of subsurface Atlantic Water temperatures, along the North Atlantic Current, are associated with a progression of heat anomalies from the Gulf Stream region that coincide with sea surface temperatures extending to cover most of the subpolar and tropical North Atlantic; a signal similar to that of the Atlantic Multidecadal Oscillation.
Long tide gauge records may underestimate global sea level rise
New research shows that even the longest and highest-quality tide gauge data may underestimate the amount of global average sea level rise that occurred during the 20th century, due to their limited location.
Indo-Pacific tropical rain belt expanded and contracted in the past
A new study using a high-resolution stalagmite record from Australia with cave sites in southern China reveal a close coupling of monsoon rainfall on both continents, with numerous synchronous pluvial and drought periods, suggesting that the tropical rain belt expanded and contracted numerous times at multidecadal to centennial scales.
Modeling western North Pacific tropical cyclones associated with ENSO
It is well known that ENSO strongly affects the interannual variability of tropical cyclones in the western North Pacific. New research shows that models can reproduce interannual variability, but none can capture the distinction between eastern Pacific and central Pacific El Niño events that is found in observations.
Pacific sea level tilt predicts global temperature changes
The Pacific Ocean has a significant influence on global mean surface temperature, as recently demonstrated during the 2015/16 El Niño. New research shows a new way to quantify the role of the Pacific Ocean using sea level information rather than traditional sea surface temperature data.
How predictable is the timing of a summer ice-free Arctic?
New research focused on determining how well the occurrence of an ice-free Arctic can be predicted. What the researchers found is that the uncertainty for the prediction of an ice-free Arctic, caused by internal climate variability, amounts to around two decades.