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Copernicus Publications, Earth System Science Data, 2(9), p. 679-695, 2017

DOI: 10.5194/essd-9-679-2017

Copernicus Publications, Earth System Science Data Discussions, p. 1-33

DOI: 10.5194/essd-2017-4

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The ACER pollen and charcoal database: a global resource to document vegetation and fire response to abrupt climate changes during the last glacial period

Journal article published in 2017 by Maria Fernanda Sánchez Goñi ORCID, Maria Fernanda Sanchez Goni, Stéphanie Desprat, Anne-Laure Daniau ORCID, Frank C. Bassinot, Franck C. Bassinot, Josué M. Polanco-Martínez, Sandy P. Harrison ORCID, Judy R. M. Allen, R. Scott Anderson, Hermann Behling, Raymonde Bonnefille, Bas Bassinot, Francesc Burjachs, José Sebastián Carrión and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Abstract. Quaternary records provide an opportunity to examine the nature of the vegetation and fire responses to rapid past climate changes comparable in velocity and magnitude to those expected in the 21st-century. The best documented examples of rapid climate change in the past are the warming events associated with the Dansgaard–Oeschger (D–O) cycles during the last glacial period, which were sufficiently large to have had a potential feedback through changes in albedo and greenhouse gas emissions on climate. Previous reconstructions of vegetation and fire changes during the D–O cycles used independently constructed age models, making it difficult to compare the changes between different sites and regions. Here, we present the ACER (Abrupt Climate Changes and Environmental Responses) global database, which includes 93 pollen records from the last glacial period (73–15 ka) with a temporal resolution better than 1000 years, 32 of which also provide charcoal records. A harmonized and consistent chronology based on radiometric dating (14C, 234U∕230Th, optically stimulated luminescence (OSL), 40Ar∕39Ar-dated tephra layers) has been constructed for 86 of these records, although in some cases additional information was derived using common control points based on event stratigraphy. The ACER database compiles metadata including geospatial and dating information, pollen and charcoal counts, and pollen percentages of the characteristic biomes and is archived in Microsoft AccessTM at https://doi.org/10.1594/PANGAEA.870867.