PMID- 24968939
OWN - NLM
STAT- MEDLINE
DCOM- 20140811
LR  - 20210430
IS  - 1095-9203 (Electronic)
IS  - 0036-8075 (Linking)
VI  - 345
IP  - 6194
DP  - 2014 Jul 18
TI  - Thermohaline circulation crisis and impacts during the mid-Pleistocene 
      transition.
PG  - 318-22
LID - 10.1126/science.1249770 [doi]
AB  - The mid-Pleistocene transition (MPT) marked a fundamental change in 
      glacial-interglacial periodicity, when it increased from ~41-thousand-year to 
      100-thousand-year cycles and developed higher-amplitude climate variability 
      without substantial changes in the Milankovitch forcing. Here, we document, by 
      using Nd isotopes, a major disruption of the ocean thermohaline circulation (THC) 
      system during the MPT between marine isotope stages (MISs) 25 and 21 at ~950 to 
      860 thousand years ago, which effectively marks the first 100-thousand-year 
      cycle, including an exceptional weakening through a critical interglacial (MIS 
      23) at ~900 thousand years ago. Its recovery into the post-MPT 100-thousand-year 
      world is characterized by continued weak glacial THC. The MPT ocean circulation 
      crisis facilitated the coeval drawdown of atmospheric CO2 and high-latitude ice 
      sheet growth, generating the conditions that stabilized 100-thousand-year cycles.
CI  - Copyright (c) 2014, American Association for the Advancement of Science.
FAU - Pena, Leopoldo D
AU  - Pena LD
AD  - Lamont-Doherty Earth Observatory of Columbia University, 61 Route 9W, Palisades, 
      NY 10964, USA. leopoldo@ldeo.columbia.edu.
FAU - Goldstein, Steven L
AU  - Goldstein SL
AD  - Lamont-Doherty Earth Observatory of Columbia University, 61 Route 9W, Palisades, 
      NY 10964, USA. Department of Earth and Environmental Sciences, Columbia 
      University, 61 Route 9W, Palisades, NY 10964, USA.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Research Support, U.S. Gov't, Non-P.H.S.
DEP - 20140626
PL  - United States
TA  - Science
JT  - Science (New York, N.Y.)
JID - 0404511
RN  - 0 (Isotopes)
RN  - 142M471B3J (Carbon Dioxide)
RN  - 2I87U3734A (Neodymium)
SB  - IM
MH  - Atlantic Ocean
MH  - Atmosphere/chemistry
MH  - Carbon Dioxide/analysis
MH  - *Climate
MH  - *Ice Cover
MH  - Isotopes/analysis
MH  - Neodymium/analysis
MH  - *Seawater
MH  - *Water Cycle
EDAT- 2014/06/28 06:00
MHDA- 2014/08/12 06:00
CRDT- 2014/06/28 06:00
PHST- 2014/06/28 06:00 [entrez]
PHST- 2014/06/28 06:00 [pubmed]
PHST- 2014/08/12 06:00 [medline]
AID - science.1249770 [pii]
AID - 10.1126/science.1249770 [doi]
PST - ppublish
SO  - Science. 2014 Jul 18;345(6194):318-22. doi: 10.1126/science.1249770. Epub 2014 
      Jun 26.