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

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202103513
ISBN  
9798283491332
DDC  
363.738
저자명  
Parish, Meredith C.
서명/저자  
Forcings of Indo-Pacific Warm Pool Climate During the Past one Million Years
발행사항  
[Sl] : Brown University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
206 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-12, Section: A.
주기사항  
Advisor: Russell, James.
학위논문주기  
Thesis (Ph.D.)--Brown University, 2024.
초록/해제  
요약The 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.
일반주제명  
Emissions
일반주제명  
Sea level
일반주제명  
Earth
일반주제명  
Sediments
일반주제명  
Lipids
일반주제명  
Core curriculum
일반주제명  
Boundary conditions
일반주제명  
Climate change
일반주제명  
Waxes
일반주제명  
Vegetation
일반주제명  
Precipitation
일반주제명  
Cooling
일반주제명  
Greenhouse gases
일반주제명  
Carbon dioxide
일반주제명  
Isotopes
일반주제명  
Regions
일반주제명  
Climate science
일반주제명  
Salinity
일반주제명  
Aquatic sciences
일반주제명  
Biological oceanography
일반주제명  
Curriculum development
일반주제명  
Mathematics
일반주제명  
Meteorology
기타저자  
Brown University Department of Earth Environmental and Planetary Sciences
기본자료저록  
Dissertations Abstracts International. 86-12A.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■1001  ▼aParish,  Meredith  C.
■24510▼aForcings  of  Indo-Pacific  Warm  Pool  Climate  During  the  Past  one  Million  Years
■260    ▼a[Sl]▼bBrown  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a206  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-12,  Section:  A.
■500    ▼aAdvisor:  Russell,  James.
■5021  ▼aThesis  (Ph.D.)--Brown  University,  2024.
■520    ▼aThe  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.
■590    ▼aSchool  code:  0024.
■650  4▼aEmissions
■650  4▼aSea  level
■650  4▼aEarth
■650  4▼aSediments
■650  4▼aLipids
■650  4▼aCore  curriculum
■650  4▼aBoundary  conditions
■650  4▼aClimate  change
■650  4▼aWaxes
■650  4▼aVegetation
■650  4▼aPrecipitation
■650  4▼aCooling
■650  4▼aGreenhouse  gases
■650  4▼aCarbon  dioxide
■650  4▼aIsotopes
■650  4▼aRegions
■650  4▼aClimate  science
■650  4▼aSalinity
■650  4▼aAquatic  sciences
■650  4▼aBiological  oceanography
■650  4▼aCurriculum  development
■650  4▼aMathematics
■650  4▼aMeteorology
■690    ▼a0404
■690    ▼a0792
■690    ▼a0416
■690    ▼a0727
■690    ▼a0405
■690    ▼a0557
■71020▼aBrown  University▼bDepartment  of  Earth,  Environmental,  and  Planetary  Sciences.
■7730  ▼tDissertations  Abstracts  International▼g86-12A.
■790    ▼a0024
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357446▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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