Stratospheric Gas‐Phase Production Alone Cannot Explain Observations of Atmospheric Perchlorate on Earth

Chan, Yuk‐Chun; Jaeglé, Lyatt; Campuzano‐Jost, Pedro; Catling, David C.; Cole‐Dai, Jihong; Furdui, Vasile I.; Jackson, W. Andrew; Jimenez, Jose L.; Kim, Dongwook; Wedum, Alanna E.; Alexander, Becky

doi:10.1029/2023gl102745

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Stratospheric Gas‐Phase Production Alone Cannot Explain Observations of Atmospheric Perchlorate on Earth

2023
By Chan, Yuk‐Chun ; Jaeglé, Lyatt ; Campuzano‐Jost, Pedro ; ...
Source: Geophysical Research Letters, 50(9)

[PDF-1.75 MB]

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Journal Title:

Geophysical Research Letters
Personal Author:

Chan, Yuk‐Chun ; Jaeglé, Lyatt ; Campuzano‐Jost, Pedro ; Catling, David C. ; Cole‐Dai, Jihong ; ... More +

Chan, Yuk‐Chun ; Jaeglé, Lyatt ; Campuzano‐Jost, Pedro ; Catling, David C. ; Cole‐Dai, Jihong ; Furdui, Vasile I. ; Jackson, W. Andrew ; Jimenez, Jose L. ; Kim, Dongwook ; Wedum, Alanna E. ; Alexander, Becky Less -
NOAA Program & Office:

CIRES (Cooperative Institute for Research in Environmental Sciences)
Description:

Perchlorate has been observed in many environments on Earth and Mars but its sources remain poorly quantified. In this study, we use a global three-dimensional chemical transport model to simulate perchlorate's gas-phase photochemical production, atmospheric transport, and deposition on Earth's surface. Model predictions are compared to newly compiled observations of atmospheric concentrations, deposition flux, and oxygen isotopic composition of perchlorate. We find that the modeled gas-phase production of perchlorate is consistent with reported stratospheric observations. Nevertheless, we show that this mechanism alone cannot explain the high levels of perchlorate observed at many near-surface sites (aerosol concentrations
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General Earth And Planetary Sciences Geophysics
Source:

Geophysical Research Letters, 50(9)
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https://doi.org/10.1029/2023gl102745
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0094-8276;1944-8007;
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PDF
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American Geophysical Union (AGU)
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Journal Article
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https://creativecommons.org/licenses/by-nc/4.0/
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CC BY-NC
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urn:sha256:58635f69d23bd57cda2a94452f5eb65b09fffcc6d604d4a594958f683da62d08
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