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deepSLice SIGNED

Deciphering the greenhouse gas record in deepest ice using continuous sublimation extraction / laser spectrometry

Total Cost €

EC-Contrib. €

Partnership

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Outcomes and
results

deepSLice project word cloud

Explore the words cloud of the deepSLice project. It provides you a very rough idea of what is the project "deepSLice" about.

holocene cores spectrometer scales standard gases climate resolution coupled unprecedented n2o continuous magnitude greenhouse cycles core drilling destructive precision polar concentrations laser global composition size thin enclosed completely analytics quantum coupling biogeochemical co2 provides nearly flow bubbles time unparalleled gain ice answer anthropogenic million complete gas air layer recollected variability span found extraction glacier pressure reducing archive goals temperature deepslice techniques samples cascade community questions decadal orbital ch4 analytical doubling unlock feedbacks direct atmospheric pressing drastically simultaneously record underlying thing warming isotopic last consumption sublimation entire ml

Project "deepSLice" data sheet

The following table provides information about the project.

Coordinator	UNIVERSITAET BERN Organization address address: HOCHSCHULSTRASSE 6 city: BERN postcode: 3012 website: http://www.unibe.ch contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.
Coordinator Country	Switzerland [CH]
Project website	http://climatehomes.unibe.ch/
Total cost	2˙255˙788 €
EC max contribution	2˙255˙788 € (100%)
Programme	1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
Code Call	ERC-2014-ADG
Funding Scheme	ERC-ADG
Starting year	2015
Duration (year-month-day)	from 2015-10-01 to 2020-09-30

Partnership

Take a look of project's partnership.

#	participants	country	role	EC contrib. [€]
1	UNIVERSITAET BERN UNIVERSITAET BERN Organization address address: HOCHSCHULSTRASSE 6 city: BERN postcode: 3012 website: http://www.unibe.ch contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.	CH (BERN)	coordinator	2˙255˙788.00

Map

Project objective

The recent anthropogenic global warming makes a detailed understanding of coupling processes between climate and biogeochemical cycles of pressing importance. The atmospheric archive of air bubbles enclosed in polar ice cores provides the only direct record of greenhouse gas changes in the past, and the key to understanding the related changes in biogeochemical cycles and climate/greenhouse gas feedbacks.

Crucial questions about greenhouse gas variability on very short (decadal) and very long (orbital) time scales still remain open. To answer these questions, the ice core community has proposed new drilling projects with the goal of nearly doubling the time span of the available ice core record to the last 1.5 million years and of covering the entire Holocene greenhouse gas record in unprecedented decadal resolution. These goals have one thing in common: due to glacier flow most of this record will only be found in a very thin layer in the bottom-most ice of the cores. Completely new analytical approaches are needed to unlock the atmospheric archive in this ice in order to gain high-resolution, high-precision measurements, while at the same time drastically reducing sample consumption compared to established techniques.

The deepSLice project will make such a step change in ice core analytics by developing a novel coupled Continuous Sublimation Extraction-Quantum Cascade Laser Spectrometer system. It will allow us to simultaneously measure CO2, CH4 and N2O concentrations as well as the isotopic composition of CO2 on air samples of only 1-2 ml at standard pressure and temperature, reducing the required sample size by one order of magnitude. This non-destructive analysis will make it also possible for the complete air sample to be recollected after analysis and used for other measurements. This method will be applied to existing and new ice cores in order to study past changes in greenhouse gases and the underlying biogeochemical cycles in unparalleled detail.

Publications

List of publications.
year	authors and title	journal	last update
2020	Ece Satar, Peter Nyfeler, Bernhard Bereiter, CÃ©line Pascale, Bernhard Niederhauser, Markus Leuenberger Investigation of adsorption and desorption behavior of small-volume cylinders and its relevance for atmospheric trace gas analysis published pages: 101-117, ISSN: 1867-8548, DOI: 10.5194/amt-13-101-2020	Atmospheric Measurement Techniques 13/1	2020-04-15
2018	Chang Liu, BÃ©la Tuzson, Philipp Scheidegger, Herbert Looser, Bernhard Bereiter, Manuel Graf, Morten Hundt, Oleg Aseev, Deran Maas, Lukas Emmenegger Laser driving and data processing concept for mobile trace gas sensing: Design and implementation published pages: 65107, ISSN: 0034-6748, DOI: 10.1063/1.5026546	Review of Scientific Instruments 89/6	2019-07-02

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The information about "DEEPSLICE" are provided by the European Opendata Portal: CORDIS opendata.