Characterizing the Atmospheric Mn Cycle and Its Impact on Terrestrial Biogeochemistry

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dc.contributor.authorLu, Louis
dc.contributor.authorLi, Longlei
dc.contributor.authorRathod, Sagar
dc.contributor.authorHess, Peter
dc.contributor.authorMartinez, Carmen
dc.contributor.authorFernandez, Nicole
dc.contributor.authorGoodale, Christine
dc.contributor.authorThies, Janice
dc.contributor.authorWong, Michelle Y.
dc.contributor.authorAlaimo, Maria Grazia
dc.contributor.authorArtaxo, Paulo
dc.contributor.authorBarraza, Francisco
dc.contributor.authorBarreto, Africa
dc.contributor.authorBeddows, David
dc.contributor.authorChellam, Shankarararman
dc.contributor.authorChen, Ying
dc.contributor.authorChuang, Patrick
dc.contributor.authorCohen, David D.
dc.contributor.authorDongarra, Gaetano
dc.contributor.authorGaston, Cassandra
dc.contributor.authorGomez, Dario
dc.contributor.authorMorera-Gomez, Yasser
dc.contributor.authorHakola, Hannele
dc.contributor.authorHand, Jenny
dc.contributor.authorHarrison, Roy
dc.contributor.authorHopke, Philip
dc.contributor.authorHueglin, Christoph
dc.contributor.authorKuang, Yuan-Wen
dc.contributor.authorKylloenen, Katriina
dc.contributor.authorLambert, Fabrice
dc.contributor.authorMaenhaut, Willy
dc.contributor.authorMartin, Randall
dc.contributor.authorPaytan, Adina
dc.contributor.authorProspero, Joseph
dc.contributor.authorGonzalez, Yenny
dc.contributor.authorRodriguez, Sergio
dc.contributor.authorSmichowski, Patricia
dc.contributor.authorVarrica, Daniela
dc.contributor.authorWalsh, Brenna
dc.contributor.authorWeagle, Crystal
dc.contributor.authorXiao, Yi-Hua
dc.contributor.authorMahowald, Natalie
dc.date.accessioned2025-01-20T17:07:08Z
dc.date.available2025-01-20T17:07:08Z
dc.date.issued2024
dc.description.abstractThe role of manganese (Mn) in ecosystem carbon (C) biogeochemical cycling is gaining increasing attention. While soil Mn is mainly derived from bedrock, atmospheric deposition could be a major source of Mn to surface soils, with implications for soil C cycling. However, quantification of the atmospheric Mn cycle, which comprises emissions from natural (desert dust, sea salts, volcanoes, primary biogenic particles, and wildfires) and anthropogenic sources (e.g., industrialization and land-use change due to agriculture), transport, and deposition, remains uncertain. Here, we use compiled emission data sets for each identified source to model and quantify the atmospheric Mn cycle by combining an atmospheric model and in situ atmospheric concentration measurements. We estimated global emissions of atmospheric Mn in aerosols (<10 mu m in aerodynamic diameter) to be 1,400 Gg Mn year(-1). Approximately 31% of the emissions come from anthropogenic sources. Deposition of the anthropogenic Mn shortened Mn "pseudo" turnover times in 1-m-thick surface soils (ranging from 1,000 to over 10,000,000 years) by 1-2 orders of magnitude in industrialized regions. Such anthropogenic Mn inputs boosted the Mn-to-N ratio of the atmospheric deposition in non-desert dominated regions (between 5 x 10(-5) and 0.02) across industrialized areas, but that was still lower than soil Mn-to-N ratio by 1-3 orders of magnitude. Correlation analysis revealed a negative relationship between Mn deposition and topsoil C density across temperate and (sub)tropical forests, consisting with atmospheric Mn deposition enhancing carbon respiration as seen in in situ biogeochemical studies.
dc.fuente.origenWOS
dc.identifier.doi10.1029/2023GB007967
dc.identifier.eissn1944-9224
dc.identifier.issn0886-6236
dc.identifier.urihttps://doi.org/10.1029/2023GB007967
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90845
dc.identifier.wosidWOS:001192180200001
dc.issue.numero4
dc.language.isoen
dc.revistaGlobal biogeochemical cycles
dc.rightsacceso restringido
dc.subjectatmospheric Mn cycle
dc.subjectMn deposition
dc.subjectC turnover
dc.subjectCommunity Earth System Model (CESM)
dc.subjectaerosol modeling
dc.subjectterrestial ecosystem
dc.titleCharacterizing the Atmospheric Mn Cycle and Its Impact on Terrestrial Biogeochemistry
dc.typeartículo
dc.volumen38
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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