Greenland records of aerosol source and atmospheric lifetime changes from the Eemian to the Holocene - Archive ouverte HAL
Article Dans Une Revue Nature Communications Année : 2018

Greenland records of aerosol source and atmospheric lifetime changes from the Eemian to the Holocene

1 CEP - Climate and Environmental Physics [Bern]
2 OCCR - Oeschger Centre for Climate Change Research
3 Centre for Ice and Climate [Copenhagen]
4 UNIBE - Universität Bern = University of Bern = Université de Berne
5 Stanford University
6 BAS - British Antarctic Survey
7 Universität des Saarlandes [Saarbrücken] = Saarland University [Saarbrücken]
8 UCPH - University of Copenhagen = Københavns Universitet
9 NBI - Niels Bohr Institute [Copenhagen]
10 Institute for the Dynamics of Environmental Processes-CNR
11 Department of Bentho-pelagic processes
12 Abteilung Klinische Sozialmedizin, Berufs- und Umweltdermatologie
13 Bioprofiles Ltd
14 NiPR - National Institute of Polar Research [Tokyo]
15 Department of Physics [Baltimore]
16 CODRA - CODRA
17 IGMM - Institut de Génétique Moléculaire de Montpellier
18 Hubei University of Economics
19 LOA - Laboratoire d’Optique Atmosphérique - UMR 8518
20 CNR-ISP - Institute of Polar Sciences [Venezia-Mestre]
21 Department of Environmental Sciences, Informatics and Statistics [Venezia]
22 UNIVERSITY CA FOSCARI VENICE ITA
23 Institute for the Dynamics of Environmental Processes-CNR
24 Department of Environmental Sciences
25 Department of Physics
26 Department of Biological Chemistry and Molecular Pharmacology [Harvard Medical School]
27 Massachusetts General Hospital [Boston]
28 Department of Chemistry
29 Skane University Hospital [Lund]
30 Institute of Low Temperature Science [Sapporo]
31 Alfred Wegener Institute [Potsdam]
32 DRI - Desert Research Institute
33 Department of Earth Sciences [Cambridge, UK]
Gideon Gfeller
  • Fonction : Auteur
Olivia Mini
  • Fonction : Auteur
Robert Mulvaney
Nerilie Abram
L. Fleet
  • Fonction : Auteur
Elizabeth Thomas
Ernesto Kettner
  • Fonction : Auteur
K. Wolff
  • Fonction : Auteur
K. Schmidt
  • Fonction : Auteur
Takayuki Kuramoto
  • Fonction : Auteur
Jun Uetake
  • Fonction : Auteur
Jocelyne Bourgeois
  • Fonction : Auteur
D. Zhiheng
  • Fonction : Auteur
Florian Adolphi
Olivia Maselli
  • Fonction : Auteur
Eric Wolff

Résumé

Abstract The Northern Hemisphere experienced dramatic changes during the last glacial, featuring vast ice sheets and abrupt climate events, while high northern latitudes during the last interglacial (Eemian) were warmer than today. Here we use high-resolution aerosol records from the Greenland NEEM ice core to reconstruct the environmental alterations in aerosol source regions accompanying these changes. Separating source and transport effects, we find strongly reduced terrestrial biogenic emissions during glacial times reflecting net loss of vegetated area in North America. Rapid climate changes during the glacial have little effect on terrestrial biogenic aerosol emissions. A strong increase in terrestrial dust emissions during the coldest intervals indicates higher aridity and dust storm activity in East Asian deserts. Glacial sea salt aerosol emissions in the North Atlantic region increase only moderately (50%), likely due to sea ice expansion. Lower aerosol concentrations in Eemian ice compared to the Holocene are mainly due to shortened atmospheric residence time, while emissions changed little.
Fichier principal
Vignette du fichier
s41467-018-03924-3.pdf (3.12 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04858790 , version 1 (30-12-2024)

Licence

Identifiants

Citer

Simon Schüpbach, Hubertus Fischer, Matthias Bigler, Tobias Erhardt, Gideon Gfeller, et al.. Greenland records of aerosol source and atmospheric lifetime changes from the Eemian to the Holocene. Nature Communications, 2018, 9 (1), pp.1476. ⟨10.1038/s41467-018-03924-3⟩. ⟨hal-04858790⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

More