This theme aims to put the observations collected during Antarctica InSync (2027-2029) into a longer term climatic perspective focusing on climate variablity, extreme events, and rapid climatic changes, such as tipping points. For this purpose, a wide array of tools, including but not limited to shallow ice and sediment cores, isotopes, and long-term historical records from e.g. weather station data. Using these tools, the theme links changes at time scales ranging from events to multi-decadal and even longer term observations. The theme will consolidate the Antarctica InSync community efforts around Antarctic past and future variability in observations, and range from short term events such as storms, atmospheric rivers, anomalous snowfall, heat waves, major surface melt, rainfall, and foehn events to changes in surface mass balance, the Antarctic contributions to global sea level and broader water-cycle changes and therefore linking to the other themes.
Potentially relevant existing groups:
SCAR AntClimNow, SCAR INSTANT, WMO PHORS, …
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