@prefix sioc: <http://rdfs.org/sioc/ns#> .
@prefix sioct: <http://rdfs.org/sioc/types#> .
@prefix dc: <http://purl.org/dc/elements/1.1/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix content: <http://purl.org/rss/1.0/modules/content/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

<http://lib.itenas.ac.id/kti/?p=5463>
  a sioc:Post, sioct:BlogPost ;
  dc:title "Tropical climate and vegetation changes during Heinrich Event 1: a model-data comparison" ;
  dcterms:identifier 5463 ;
  dc:modified "2018-03-15"^^xsd:date ;
  dc:created "2018-03-15"^^xsd:date ;
  sioc:link <http://lib.itenas.ac.id/kti/?p=5463> ;
  sioc:has_creator <http://lib.itenas.ac.id/kti/?author=6#account> ;
  sioc:has_container <http://lib.itenas.ac.id/kti/#posts> ;
  dc:abstract "" ;
  content:encoded """<![CDATA[<span class="pb_abstract">Abrupt climate changes from 18 to 15 thousand years before present (kyr BP) associated with Heinrich Event 1 (HE1) had a strong impact on vegetation patterns not only at high latitudes of the Northern Hemisphere, but also in the tropical regions around the Atlantic Ocean. To gain a better understanding of the linkage between high and low latitudes, we used the University of Victoria (UVic) Earth System-Climate Model (ESCM) with dynamical vegetation and land surface components to simulate four scenarios of climate-vegetation interaction: the pre-industrial era, the Last Glacial Maximum (LGM), and a Heinrich-like event with two different climate backgrounds (interglacial and glacial). We calculated mega-biomes from the plant-functional types (PFTs) generated by the model to allow for a direct comparison between model results and palynological vegetation reconstructions.</span>

Our calculated mega-biomes for the pre-industrial period and the LGM corresponded well with biome reconstructions of the modern and LGM time slices, respectively, except that our pre-industrial simulation predicted the dominance of grassland in southern Europe and our LGM simulation resulted in more forest cover in tropical and sub-tropical South America.

The HE1-like simulation with a glacial climate background produced sea-surface temperature patterns and enhanced inter-hemispheric thermal gradients in accordance with the "bipolar seesaw" hypothesis. We found that the cooling of the Northern Hemisphere caused a southward shift of those PFTs that are indicative of an increased desertification and a retreat of broadleaf forests in West Africa and northern South America. The mega-biomes from our HE1 simulation agreed well with paleovegetation data from tropical Africa and northern South America. Thus, according to our model-data comparison, the reconstructed vegetation changes for the tropical regions around the Atlantic Ocean were physically consistent with the remote effects of a Heinrich event under a glacial climate background.

<strong>Dibuat Oleh :  </strong><span class="pb_authors">D. Handiani, A. Paul, and L. Dupont</span>

<strong>Alamat e-mail: </strong>dhandiani@marum.de

<strong>Kata Kunci:-</strong>

<strong>Keterangan :</strong> Karya Tulis Ilmiah ini dimuat pada Climate of The Past : An interactive open-access journal of the European Geoscience Union, volume 8 issue 1,  37-57, 2012

<a href="https://www.clim-past.net/8/37/2012/">Tropical climate and vegetation changes during Heinrich Event 1: a model-data comparison</a>]]>"""^^rdf:XMLLiteral ;
  sioc:content """Abrupt climate changes from 18 to 15 thousand years before present (kyr BP) associated with Heinrich Event 1 (HE1) had a strong impact on vegetation patterns not only at high latitudes of the Northern Hemisphere, but also in the tropical regions around the Atlantic Ocean. To gain a better understanding of the linkage between high and low latitudes, we used the University of Victoria (UVic) Earth System-Climate Model (ESCM) with dynamical vegetation and land surface components to simulate four scenarios of climate-vegetation interaction: the pre-industrial era, the Last Glacial Maximum (LGM), and a Heinrich-like event with two different climate backgrounds (interglacial and glacial). We calculated mega-biomes from the plant-functional types (PFTs) generated by the model to allow for a direct comparison between model results and palynological vegetation reconstructions.

Our calculated mega-biomes for the pre-industrial period and the LGM corresponded well with biome reconstructions of the modern and LGM time slices, respectively, except that our pre-industrial simulation predicted the dominance of grassland in southern Europe and our LGM simulation resulted in more forest cover in tropical and sub-tropical South America.

The HE1-like simulation with a glacial climate background produced sea-surface temperature patterns and enhanced inter-hemispheric thermal gradients in accordance with the "bipolar seesaw" hypothesis. We found that the cooling of the Northern Hemisphere caused a southward shift of those PFTs that are indicative of an increased desertification and a retreat of broadleaf forests in West Africa and northern South America. The mega-biomes from our HE1 simulation agreed well with paleovegetation data from tropical Africa and northern South America. Thus, according to our model-data comparison, the reconstructed vegetation changes for the tropical regions around the Atlantic Ocean were physically consistent with the remote effects of a Heinrich event under a glacial climate background.

Dibuat Oleh :  D. Handiani, A. Paul, and L. Dupont

Alamat e-mail: dhandiani@marum.de

Kata Kunci:-

Keterangan : Karya Tulis Ilmiah ini dimuat pada Climate of The Past : An interactive open-access journal of the European Geoscience Union, volume 8 issue 1,  37-57, 2012

Tropical climate and vegetation changes during Heinrich Event 1: a model-data comparison""" ;
  sioc:topic <http://lib.itenas.ac.id/kti/?cat=118>, <http://lib.itenas.ac.id/kti/?cat=147> .

<http://lib.itenas.ac.id/kti/?author=6#account> rdfs:seeAlso <http://lib.itenas.ac.id/kti/?author=6&feed=lhrdf&format=turtle> .
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