Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactions

Autor: Qinyi Li, Daphne Meidan, Peter Hess, Juan A. Añel, Carlos A. Cuevas, Scott Doney, Rafael P. Fernandez, Maarten van Herpen, Lena Höglund-Isaksson, Matthew S. Johnson, Douglas E. Kinnison, Jean-François Lamarque, Thomas Röckmann, Natalie M. Mahowald, Alfonso Saiz-Lopez

Publikováno v: Nature Communications, Vol 14, Iss 1, Pp 1-10 (2023)

Abstract Atmospheric methane is both a potent greenhouse gas and photochemically active, with approximately equal anthropogenic and natural sources. The addition of chlorine to the atmosphere has been proposed to mitigate global warming through metha

Externí odkaz: https://doaj.org/article/89b4dd36a5f34af3952e8cffe06f6ad0

The use of δ 13C in CO to determine removal of CH4 by Cl radicals in the atmosphere

Autor: Thomas Röckmann, Maarten van Herpen, Chloe Brashear, Carina van der Veen, Sergey Gromov, Qinyi Li, Alfonso Saiz-Lopez, Daphne Meidan, Africa Barreto, Natalia Prats, Ignacio Mármol, Ramón Ramos, Isabel Baños, Jesús M Arrieta, Sönke Zaehnle, Armin Jordan, Heiko Moossen, Helder Timas, Dickon Young, Peter Sperlich, Rowena Moss, Matthew S Johnson

Publikováno v: Environmental Research Letters, Vol 19, Iss 6, p 064054 (2024)

The reaction of CH _4 with chlorine (Cl) radicals in the atmosphere is associated with an extraordinarily strong isotopic fractionation, where ^12 CH _4 reacts about 70 ‰ faster with Cl than ^13 CH _4 . Therefore, although the Cl-based sink of CH _

Externí odkaz: https://doaj.org/article/012dd9df755f41d9bc662ffba918a681

Photocatalytic chlorine atom production on mineral dust-sea spray aerosols over the North Atlantic.

Autor: van Herpen MMJW; Acacia Impact Innovation, Maarten van Herpen, Bernheze 5384 BB, The Netherlands., Li Q; Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Blas Cabrera, Spanish National Research Council, 28006 Madrid, Spain., Saiz-Lopez A; Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Blas Cabrera, Spanish National Research Council, 28006 Madrid, Spain., Liisberg JB; Department of Chemistry, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark., Röckmann T; Institute for Marine and Atmospheric Research Utrecht, Department of Physics, Faculty of Science, Utrecht University, 3584 CS Utrecht, The Netherlands., Cuevas CA; Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Blas Cabrera, Spanish National Research Council, 28006 Madrid, Spain., Fernandez RP; Institute for Interdisciplinary Science, National Research Council, Mendoza 5501, Argentina.; School of Natural Sciences, National University of Cuyo, Mendoza 5501, Argentina., Mak JE; School of Marine and Atmospheric Sciences, Stony Brook University, Brookhaven, NY 11790., Mahowald NM; Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY 14853., Hess P; Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853., Meidan D; Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY 14853., Stuut JW; Royal Netherlands Institute for Sea Research, Landsdiep 4, 1797 SZ, 't Horntje, The Netherlands.; Department of Earth Sciences, Faculty of Science, Vrije Universiteit Amsterdam, 1105, Amsterdam, The Netherlands., Johnson MS; Department of Chemistry, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark.

Publikováno v: Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2023 Aug; Vol. 120 (31), pp. e2303974120. Date of Electronic Publication: 2023 Jul 24.