Spatial and Temporal Variability of Iodine in Aerosol
In this work, we describe the compilation and homogenization of an extensive data set of aerosol iodine field observations in the period between 1963 and 2018 and we discuss its spatial and temporal dependences by comparison with CAM-Chem model simulations. A close to linear relationship between sol...
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ftconicet:oai:ri.conicet.gov.ar:11336/211421 2023-10-09T21:47:08+02:00 Spatial and Temporal Variability of Iodine in Aerosol Gómez Martín, Juan Carlos Saiz López, Alfonso Cuevas, Carlos Alberto Fernandez, Rafael Pedro Gilfedder, Benjamin Weller, Rolf Baker, Alex R. Droste, Elise Lai, Senchao application/pdf http://hdl.handle.net/11336/211421 eng eng Blackwell Publishing info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2020JD034410 info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JD034410 http://hdl.handle.net/11336/211421 Gómez Martín, Juan Carlos; Saiz López, Alfonso; Cuevas, Carlos Alberto; Fernandez, Rafael Pedro; Gilfedder, Benjamin; et al.; Spatial and Temporal Variability of Iodine in Aerosol; Blackwell Publishing; Journal of Geophysical Research: Atmospheres; 126; 9; 5-2021; 1-23 2169-8996 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc/2.5/ar/ AEROSOL COMPOSITION ATMOSPHERIC IODINE IODINE SOURCES https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1029/2020JD034410 2023-09-24T20:09:52Z In this work, we describe the compilation and homogenization of an extensive data set of aerosol iodine field observations in the period between 1963 and 2018 and we discuss its spatial and temporal dependences by comparison with CAM-Chem model simulations. A close to linear relationship between soluble and total iodine in aerosol is found (∼80% aerosol iodine is soluble), which enables converting a large subset of measurements of soluble iodine into total iodine. The resulting data set shows a distinct latitudinal dependence, with an enhancement toward the Northern Hemisphere (NH) tropics and lower values toward the poles. This behavior, which has been predicted by atmospheric models to depend on the global distribution of the main oceanic iodine source (which in turn depends on the reaction of ozone with aqueous iodide on the sea water-air interface, generating gas-phase I2 and HOI), is confirmed here by field observations for the first time. Longitudinally, there is some indication of a wave-one profile in the tropics, which peaks in the Atlantic and shows a minimum in the Pacific. New data from Antarctica show that the south polar seasonal variation of iodine in aerosol mirrors that observed previously in the Arctic, with two equinoctial maxima and the dominant maximum occurring in spring. While no clear seasonal variability is observed in NH middle latitudes, there is an indication of different seasonal cycles in the NH tropical Atlantic and Pacific. Long-term trends cannot be unambiguously established as a result of inhomogeneous time and spatial coverage and analytical methods. Fil: Gómez Martín, Juan Carlos. Consejo Superior de Investigaciones Científicas; España. Instituto de Astrofísica de Andalucía España Fil: Saiz López, Alfonso. Consejo Superior de Investigaciones Científicas. Instituto de Química Física "Rocasolano"; España Fil: Cuevas, Carlos Alberto. Consejo Superior de Investigaciones Científicas. Instituto de Química Física "Rocasolano"; España Fil: Fernandez, Rafael Pedro. Consejo ... Article in Journal/Newspaper Antarc* Antarctica Arctic CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Arctic Pacific Fernandez ENVELOPE(-62.233,-62.233,-63.250,-63.250) Journal of Geophysical Research: Atmospheres 126 9 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
AEROSOL COMPOSITION ATMOSPHERIC IODINE IODINE SOURCES https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
AEROSOL COMPOSITION ATMOSPHERIC IODINE IODINE SOURCES https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Gómez Martín, Juan Carlos Saiz López, Alfonso Cuevas, Carlos Alberto Fernandez, Rafael Pedro Gilfedder, Benjamin Weller, Rolf Baker, Alex R. Droste, Elise Lai, Senchao Spatial and Temporal Variability of Iodine in Aerosol |
topic_facet |
AEROSOL COMPOSITION ATMOSPHERIC IODINE IODINE SOURCES https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
In this work, we describe the compilation and homogenization of an extensive data set of aerosol iodine field observations in the period between 1963 and 2018 and we discuss its spatial and temporal dependences by comparison with CAM-Chem model simulations. A close to linear relationship between soluble and total iodine in aerosol is found (∼80% aerosol iodine is soluble), which enables converting a large subset of measurements of soluble iodine into total iodine. The resulting data set shows a distinct latitudinal dependence, with an enhancement toward the Northern Hemisphere (NH) tropics and lower values toward the poles. This behavior, which has been predicted by atmospheric models to depend on the global distribution of the main oceanic iodine source (which in turn depends on the reaction of ozone with aqueous iodide on the sea water-air interface, generating gas-phase I2 and HOI), is confirmed here by field observations for the first time. Longitudinally, there is some indication of a wave-one profile in the tropics, which peaks in the Atlantic and shows a minimum in the Pacific. New data from Antarctica show that the south polar seasonal variation of iodine in aerosol mirrors that observed previously in the Arctic, with two equinoctial maxima and the dominant maximum occurring in spring. While no clear seasonal variability is observed in NH middle latitudes, there is an indication of different seasonal cycles in the NH tropical Atlantic and Pacific. Long-term trends cannot be unambiguously established as a result of inhomogeneous time and spatial coverage and analytical methods. Fil: Gómez Martín, Juan Carlos. Consejo Superior de Investigaciones Científicas; España. Instituto de Astrofísica de Andalucía España Fil: Saiz López, Alfonso. Consejo Superior de Investigaciones Científicas. Instituto de Química Física "Rocasolano"; España Fil: Cuevas, Carlos Alberto. Consejo Superior de Investigaciones Científicas. Instituto de Química Física "Rocasolano"; España Fil: Fernandez, Rafael Pedro. Consejo ... |
format |
Article in Journal/Newspaper |
author |
Gómez Martín, Juan Carlos Saiz López, Alfonso Cuevas, Carlos Alberto Fernandez, Rafael Pedro Gilfedder, Benjamin Weller, Rolf Baker, Alex R. Droste, Elise Lai, Senchao |
author_facet |
Gómez Martín, Juan Carlos Saiz López, Alfonso Cuevas, Carlos Alberto Fernandez, Rafael Pedro Gilfedder, Benjamin Weller, Rolf Baker, Alex R. Droste, Elise Lai, Senchao |
author_sort |
Gómez Martín, Juan Carlos |
title |
Spatial and Temporal Variability of Iodine in Aerosol |
title_short |
Spatial and Temporal Variability of Iodine in Aerosol |
title_full |
Spatial and Temporal Variability of Iodine in Aerosol |
title_fullStr |
Spatial and Temporal Variability of Iodine in Aerosol |
title_full_unstemmed |
Spatial and Temporal Variability of Iodine in Aerosol |
title_sort |
spatial and temporal variability of iodine in aerosol |
publisher |
Blackwell Publishing |
url |
http://hdl.handle.net/11336/211421 |
long_lat |
ENVELOPE(-62.233,-62.233,-63.250,-63.250) |
geographic |
Arctic Pacific Fernandez |
geographic_facet |
Arctic Pacific Fernandez |
genre |
Antarc* Antarctica Arctic |
genre_facet |
Antarc* Antarctica Arctic |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2020JD034410 info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JD034410 http://hdl.handle.net/11336/211421 Gómez Martín, Juan Carlos; Saiz López, Alfonso; Cuevas, Carlos Alberto; Fernandez, Rafael Pedro; Gilfedder, Benjamin; et al.; Spatial and Temporal Variability of Iodine in Aerosol; Blackwell Publishing; Journal of Geophysical Research: Atmospheres; 126; 9; 5-2021; 1-23 2169-8996 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc/2.5/ar/ |
op_doi |
https://doi.org/10.1029/2020JD034410 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
126 |
container_issue |
9 |
_version_ |
1779309931914067968 |