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Author

C. Ummenhofer

3 papers indexed here

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Open access Oct 2026

Southern Portugal hydroclimate of the last millennium from near‐annually resolved speleothem records

Hydroclimate in Portugal is influenced by the North Atlantic subtropical high‐pressure system (the Azores High) and by internal climate modes, most prominently the North Atlantic Oscillation, which may shift in position and/or intensity due to anthropogenic climate change. The development of high‐resolution paleocl...

Alaina G. Chormann, A. Wanamaker, D. Thatcher et al. · 0 citations
Open access Aug 2026

Coupling of Pacific and Indian Ocean variability disrupted by 19th century volcanism

Through tropical basin interactions, the Indian Ocean Walker circulation (IWC) and basin mode (IOBM) covary with the Pacific Walker circulation (PWC) on interannual-decadal timescales. Coupling between IOBM and PWC has degraded considerably in recent decades due to greenhouse gas forcing; however, the instrumental reco...

Shawn Wang, D. Oppo, C. Ummenhofer · 0 citations

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