Climate changes modulated the history of Arctic iodine during the Last Glacial Cycle

Juan Pablo Corella (), Niccolo Maffezzoli, Andrea Spolaor, Paul Vallelonga, Carlos A. Cuevas, Federico Scoto, Juliane Müller, Bo Vinther, Helle A. Kjær, Giulio Cozzi, Ross Edwards, Carlo Barbante and Alfonso Saiz-Lopez ()
Additional contact information
Juan Pablo Corella: Institute of Physical Chemistry Rocasolano, CSIC
Niccolo Maffezzoli: Physics of Ice Climate and Earth, Niels Bohr Institute, University of Copenhagen
Andrea Spolaor: Institute of Polar Sciences, CNR- ISP
Paul Vallelonga: Physics of Ice Climate and Earth, Niels Bohr Institute, University of Copenhagen
Carlos A. Cuevas: Institute of Physical Chemistry Rocasolano, CSIC
Federico Scoto: Ca’ Foscari University of Venice, Department of Environmental Sciences, Informatics and Statistics
Juliane Müller: Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research
Bo Vinther: Physics of Ice Climate and Earth, Niels Bohr Institute, University of Copenhagen
Helle A. Kjær: Physics of Ice Climate and Earth, Niels Bohr Institute, University of Copenhagen
Giulio Cozzi: Institute of Polar Sciences, CNR- ISP
Ross Edwards: Physics and Astronomy, Curtin University
Carlo Barbante: Institute of Polar Sciences, CNR- ISP
Alfonso Saiz-Lopez: Institute of Physical Chemistry Rocasolano, CSIC

Nature Communications, 2022, vol. 13, issue 1, 1-9

Abstract: Abstract Iodine has a significant impact on promoting the formation of new ultrafine aerosol particles and accelerating tropospheric ozone loss, thereby affecting radiative forcing and climate. Therefore, understanding the long-term natural evolution of iodine, and its coupling with climate variability, is key to adequately assess its effect on climate on centennial to millennial timescales. Here, using two Greenland ice cores (NEEM and RECAP), we report the Arctic iodine variability during the last 127,000 years. We find the highest and lowest iodine levels recorded during interglacial and glacial periods, respectively, modulated by ocean bioproductivity and sea ice dynamics. Our sub-decadal resolution measurements reveal that high frequency iodine emission variability occurred in pace with Dansgaard/Oeschger events, highlighting the rapid Arctic ocean-ice-atmosphere iodine exchange response to abrupt climate changes. Finally, we discuss if iodine levels during past warmer-than-present climate phases can serve as analogues of future scenarios under an expected ice-free Arctic Ocean. We argue that the combination of natural biogenic ocean iodine release (boosted by ongoing Arctic warming and sea ice retreat) and anthropogenic ozone-induced iodine emissions may lead to a near future scenario with the highest iodine levels of the last 127,000 years.

Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-021-27642-5 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-021-27642-5

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-021-27642-5

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().