rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    non sort: A
    title: new mechanism for millennial scale positive precipitation anomalies over tropical South America
  name:
    name part: Campos, Marília C.
    role:
      role term: creator
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Chiessi, Cristiano Mazur
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Prange, Matthias
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Mulitza, Stefan
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Kuhnert, Henning
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Paul, André
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Venancio, Igor M.
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Albuquerque, Ana Luiza S.
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Cruz, Francisco W.
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Bahr, André
    role:
      role term: VerfasserIn
    role:
      role term: aut
  type of resource: text
  origin info:
    place:
      place term: xx
    date issued: 2019
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 13
  abstract: Continental and marine paleoclimate archives from northwestern and northeastern South America recorded positive precipitation anomalies during Heinrich Stadials (HS). These anomalies have been classically attributed to enhanced austral summer (monsoon) precipitation. However, the lack of marine paleoclimate records off eastern South America as well as inconsistencies between southeastern South American continental and marine records hamper a comprehensive understanding of the mechanism responsible for (sub-) tropical South American hydroclimate response to HS. Here we investigate piston core M125-95-3 collected off eastern South America (10.94°S) and simulate South American HS conditions with a high-resolution version of an atmosphere-ocean general circulation model. Further, meridional changes in precipitation over (sub-) tropical South America were assessed with a thorough compilation of previously available marine paleorecords. Our ln(Ti/Ca) and ln(Fe/K) data show increases during HS6-Younger Dryas. It is the first core off eastern South America and the southernmost from the Atlantic continental margin of South America that unequivocally records HS-related positive precipitation anomalies. Based on our new data, model results and the compilation of available marine records, we propose a new mechanism for the positive precipitation anomalies over tropical South America during HS. The new mechanism involves austral summer precipitation increases only over eastern South America while the rest of tropical South America experienced precipitation increases during the winter, challenging the widely held assumption of a strengthened monsoon. South American precipitation changes were triggered by dynamic and thermodynamic processes including a stronger moisture supply from the equatorial North Atlantic (tropical South Atlantic) in austral winter (summer).
  note: Marília C. Campos, Cristiano M. Chiessi, Matthias Prange, Stefan Mulitza, Henning Kuhnert, André Paul, Igor M. Venancio, Ana Luiza S. Albuquerque, Francisco W. Cruz, André Bahr
  note: Gesehen am 14.01.2020
  subject:
    topic: Heinrich Stadials
  subject:
    topic: Inorganic geochemistry
  subject:
    topic: Paleoclimatology
  subject:
    topic: Precipitation
  subject:
    topic: Quaternary
  subject:
    topic: South America
  subject:
    topic: X-ray fluorescence
  classification: 31
  related item:
    title info:
      title: Quaternary science reviews
    name:
      name part: A new mechanism for millennial scale positive precipitation anomalies over tropical South America
    origin info:
      publisher: Amsterdam [u.a.] : Elsevier, 1982
    physical description:
      extent: Online-Ressource
    identifier: 0277-3791
    identifier: (DE-627)303614544
    identifier: (DE-600)1495523-4
    identifier: (DE-576)259484040
    part:
      text: 225(2019) Artikel-Nummer 105990, 13 Seiten
  related item:
    name:
      name part: A new mechanism for millennial scale positive precipitation anomalies over tropical South America
    part:
      text: volume:225
    part:
      text: year:2019
    part:
      text: pages:105990
    part:
      text: extent:13
  identifier: https://doi.org/10.1016/j.quascirev.2019.105990
  identifier: http://www.sciencedirect.com/science/article/pii/S0277379119307589
  record info:
    record content source: DE-627
    record creation date: 200114
    record change date: 20251021171257.0
    record identifier: 1687282935
    language of cataloging:
      language term: ger