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18,000 Years Ago, The Zealandia Switch Decimated Earth s Glaciers Has It Returned?

Earlier this month, we wrapped up the latest annual end-of-summer snowline survey over New Zealand s South Island (Te Waipounamu), providing a birdseye view of how glaciers fared during the past year.

New zealand generalNew zealandLake ohauSouthern alpsLake pukakiAaron putnam george dentonDavid barrellAndrew lorreyMt cook national parkUniversity of maineSouth islandTasman seaSouthern hemisphereZealandia switchAaron putnamGeorge denton

Zealandia Switch drove rapid global ice retreat 18,000 years ago

Zealandia Switch drove rapid global ice retreat 18,000 years ago
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New zealand generalNew zealandSouthern alpsSouth islandTasman seaSouthern hemisphereZealandia switch

The Zealandia Switch drove rapid global ice retreat 18,000 years ago Has it switched to a new level?

Rocks deposited by vanishing glaciers in the Southern Alps thousands of years ago hold climate clues about the past, painting a bleak picture about the long-term survival of alpine ice in New Zealand.

New zealand generalNew zealandSouthern alpsSouth islandTasman seaSouthern hemisphereZealandia switchLast glacial terminationLice lossEw zealand stories

The Zealandia Switch : Missing Link in Big Natural Climate Shifts?

The Zealandia Switch : Missing Link in Big Natural Climate Shifts? The Southern Hemisphere may be the missing link in answering longstanding questions about how ice ages wax and wane, according to a new study. There, say researchers, complex interactions among the westerly wind system, the Southern Ocean and the tropical Pacific can trigger rapid global changes in atmospheric temperature. The mechanism, dubbed the Zealandia Switch, relates to the position of the Southern Hemisphere westerly wind belt the strongest wind system on Earth and the continental masses of the southwest Pacific Ocean around New Zealand. The researchers suggest it could again play a role, though not necessarily a predictable one, as humans push the planet into a warmer state.

United statesNew zealandLake pukakiNew zealand generalJoerg schaeferDavid barrellJoellen russellWallace broeckerPacific oceanAaron putnamGeorge dentonMichael kaplanQuesada family foundationComer family foundationUniversity of arizonaColumbia university lamont doherty earth observatory

Environmental News Network - Zealandia Switch May Be the Missing Link in Understanding Ice Age Climates

Environmental News Network - Zealandia Switch May Be the Missing Link in Understanding Ice Age Climates
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New zealandWallace broeckerPacific oceanGeorge dentonUmaine libra professor of geological sciencesUniversity of arizonaUniversity of maineColumbia university lamont doherty earth observatoryColumbia universitySouthern hemisphereSouthern oceanZealandia switchLamont doherty earth observatoryQuaternary scienceLibra professorGeological sciences