Opendata, web and dolomites

14Constraint SIGNED

Radiocarbon constraints for models of C cycling in terrestrial ecosystems: from process understanding to global benchmarking

Total Cost €


EC-Contrib. €






Project "14Constraint" data sheet

The following table provides information about the project.


Organization address
postcode: 80539
website: n.a.

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 Germany [DE]
 Total cost 2˙283˙747 €
 EC max contribution 2˙283˙747 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2015-AdG
 Funding Scheme ERC-ADG
 Starting year 2016
 Duration (year-month-day) from 2016-12-01   to  2021-11-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

The overall goal of 14Constraint is to enhance the availability and use of radiocarbon data as constraints for process-based understanding of the age distribution of carbon in and respired by soils and ecosystems. Carbon enters ecosystems by a single process, photosynthesis. It returns by a range of processes that depend on plant allocation and turnover, the efficiency and rate of litter decomposition and the mechanisms stabilizing C in soils. Thus the age distribution of respired CO2 and the age of C residing in plants, litter and soils are diagnostic properties of ecosystems that provide key constraints for testing carbon cycle models. Radiocarbon, especially the transit of ‘bomb’ 14C created in the 1960s, is a powerful tool for tracing C exchange on decadal to centennial timescales. 14Constraint will assemble a global database of existing radiocarbon data (WP1) and demonstrate how they can constrain and test ecosystem carbon cycle models. WP2 will fill data gaps and add new data from sites in key biomes that have ancillary data sufficient to construct belowground C and 14C budgets. These detailed investigations will focus on the role of time lags caused in necromass and fine roots, as well as the dynamics of deep soil C. Spatial extrapolation beyond the WP2 sites will require sampling along global gradients designed to explore the relative roles of mineralogy, vegetation and climate on the age of C in and respired from soil (WP3). Products of this 14Constraint will include the first publicly available global synthesis of terrestrial 14C data, and will add over 5000 new measurements. This project is urgently needed before atmospheric 14C levels decline to below 1950 levels as expected in the next decade.


year authors and title journal last update
List of publications.
2020 Holger Metzler, Qing Zhu, William Riley, Alison Hoyt, Markus Müller, Carlos A. Sierra
Mathematical Reconstruction of Land Carbon Models From Their Numerical Output: Computing Soil Radiocarbon From C Dynamics
published pages: e2019MS001776, ISSN: 1942-2466, DOI: 10.1029/2019ms001776
Journal of Advances in Modeling Earth Systems 12/1 2020-02-04
2020 Corey R. Lawrence, Jeffrey Beem-Miller, Alison M. Hoyt, Grey Monroe, Carlos A. Sierra, Shane Stoner, Katherine Heckman, Joseph C. Blankinship, Susan E. Crow, Gavin McNicol, Susan Trumbore, Paul A. Levine, Olga Vindušková, Katherine Todd-Brown, Craig Rasmussen, Caitlin E. Hicks Pries, Christina Schädel, Karis McFarlane, Sebastian Doetterl, Christine Hatté, Yujie He, Claire Treat, Jennifer W. Ha
An open-source database for the synthesis of soil radiocarbon data: International Soil Radiocarbon Database (ISRaD) version 1.0
published pages: 61-76, ISSN: 1866-3516, DOI: 10.5194/essd-12-61-2020
Earth System Science Data 12/1 2020-02-04
2018 Carlos A. Sierra, Alison M. Hoyt, Yujie He, Susan E. Trumbore
Soil Organic Matter Persistence as a Stochastic Process: Age and Transit Time Distributions of Carbon in Soils
published pages: 1574-1588, ISSN: 0886-6236, DOI: 10.1029/2018GB005950
Global Biogeochemical Cycles 32/10 2019-11-13
2018 R. Chelsea Nagy, Stephen Porder, Paulo Brando, Eric A. Davidson, Adelaine Michela e Silva Figueira, Christopher Neill, Shelby Riskin, Susan Trumbore
Soil Carbon Dynamics in Soybean Cropland and Forests in Mato Grosso, Brazil
published pages: 18-31, ISSN: 2169-8953, DOI: 10.1002/2017JG004269
Journal of Geophysical Research: Biogeosciences 123/1 2019-11-13
2019 Avni Malhotra, Katherine Todd-Brown, Lucas E Nave, Niels H Batjes, James R Holmquist, Alison M Hoyt, Colleen M Iversen, Robert B Jackson, Kate Lajtha, Corey Lawrence, Olga Vindušková, William Wieder, Mathew Williams, Gustaf Hugelius, Jennifer Harden
The landscape of soil carbon data: Emerging questions, synergies and databases
published pages: 707-719, ISSN: 0309-1333, DOI: 10.1177/0309133319873309
Progress in Physical Geography: Earth and Environment 43/5 2019-11-13
2019 Jinsong Chen, Qing Zhu, William J. Riley, Yujie He, James T. Randerson, Susan Trumbore
Comparison With Global Soil Radiocarbon Observations Indicates Needed Carbon Cycle Improvements in the E3SM Land Model
published pages: 1098-1114, ISSN: 2169-8953, DOI: 10.1029/2018jg004795
Journal of Geophysical Research: Biogeosciences 124 2019-09-02
2019 Travis W. Drake, Kristof Van Oost, Matti Barthel, Marijn Bauters, Alison M. Hoyt, David C. Podgorski, Johan Six, Pascal Boeckx, Susan E. Trumbore, Landry Cizungu Ntaboba, Robert G. M. Spencer
Mobilization of aged and biolabile soil carbon by tropical deforestation
published pages: 541-546, ISSN: 1752-0894, DOI: 10.1038/s41561-019-0384-9
Nature Geoscience 12/7 2019-09-02

Are you the coordinator (or a participant) of this project? Plaese send me more information about the "14CONSTRAINT" project.

For instance: the website url (it has not provided by EU-opendata yet), the logo, a more detailed description of the project (in plain text as a rtf file or a word file), some pictures (as picture files, not embedded into any word file), twitter account, linkedin page, etc.

Send me an  email ( and I put them in your project's page as son as possible.

Thanks. And then put a link of this page into your project's website.

The information about "14CONSTRAINT" are provided by the European Opendata Portal: CORDIS opendata.

More projects from the same programme (H2020-EU.1.1.)

OptimHist (2020)

Optimization and historical contingency in living systems: a biophysical approach

Read More  

ModGravTrial (2019)

Modified Gravity on Trial

Read More  

CerQuS (2019)

Certified Quantum Security

Read More