RADIOCARBON IN GLOBAL TROPOSPHERIC CARBON DIOXIDE

作者：Ingeborg Levin, Samuel Hammer, Bernd Kromer, Susanne Preunkert, Rolf Weller, Douglas E. J. Worthy · 发表于：Radiocarbon · 年份：2021 · DOI：10.1017/rdc.2021.102 · 被引用次数：52 · 研究领域：Atmospheric and Environmental Gas Dynamics、Geology and Paleoclimatology Research、Methane Hydrates and Related Phenomena

ABSTRACT Since the 1950s, observations of radiocarbon ( 14 C) in tropospheric carbon dioxide (CO 2 ) have been conducted in both hemispheres, documenting the so-called nuclear “bomb spike” and its transfer into the oceans and the terrestrial biosphere, the two compartments permanently exchanging carbon with the atmosphere. Results from the Heidelberg global network of Δ 14 C-CO 2 observations are revisited here with respect to the insights and quantitative constraints they provided on these carbon exchange fluxes. The recent development of global and hemispheric trends of Δ 14 C-CO 2 are further discussed in regard to their suitability to continue providing constraints for 14 C-free fossil CO 2 emission changes on the global and regional scale.