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Forcings of Indo-Pacific Warm Pool C...

Parish, Meredith C.,

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Forcings of Indo-Pacific Warm Pool Climate During the Past one Million Years /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Forcings of Indo-Pacific Warm Pool Climate During the Past one Million Years // Meredith C Parish.
作者:	Parish, Meredith C.,
面頁冊數:	1 electronic resource (206 pages)
附註:	Source: Dissertations Abstracts International, Volume: 86-12, Section: A.
Contained By:	Dissertations Abstracts International86-12A.
標題:	Emissions. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=32007344
ISBN:	9798283491332

Forcings of Indo-Pacific Warm Pool Climate During the Past one Million Years /
Parish, Meredith C.,

Forcings of Indo-Pacific Warm Pool Climate During the Past one Million Years /Meredith C Parish. - 1 electronic resource (206 pages)

Source: Dissertations Abstracts International, Volume: 86-12, Section: A.

The past one million years encompasses major changes in the Earth's glacial-interglacial cycles, with a shift from 41- to 100-kyr during the Mid-Pleistocene Transition (MPT) and increased interglacial CO 2during the Mid-Brunhes Transition (MBT). These reorganizations of Earth's climate and carbon cycle provide natural experiments to test the impacts of CO 2on tropical rainfall and water resources. We produced long, orbitally-resolved hydroclimate and vegetation reconstructions to uncover the evolution of hydroclimate and its primary climate forcing mechanisms in the Maritime Continent (MC), a region with global importance through transport of heat to higher latitudes. We provide a strong framework for interpreting branched glycerol dialkyl glycerol tetraethers (brGDGT), leaf wax d2H and d13C records from Lake Towuti, Indonesia on orbital timescales by producing records that span the last deglaciation. We then produce 1-Myr, orbital-scale temperature, hydroclimate, and vegetation records from Lake Towuti to constrain the controls on MC climate across major reorganizations of Earth's carbon cylce. We show that the MC experienced hydroclimatic stability during a period of stable, warm temperature prior to the MBT, followed by increasing orbital-scale instability as interglacial CO 2concentrations rose after the MBT, suggesting strong sensitivity to climate warming. We observe prominent 41-kyr cycles in rainfall, suggesting an important role for ice volume and/or greenhouse gas concentrations in controlling precipitation in the MC. Insolation has long been presumed as the dominant forcing of hydroclimate in the tropics, yet our data point to temperature and glacial-interglacial cycles as the primary forcing of MC hydroclimate.

English

ISBN: 9798283491332Subjects--Topical Terms:

3559499
Emissions.

Forcings of Indo-Pacific Warm Pool Climate During the Past one Million Years /
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