Search: onr:"swepub:oai:DiVA.org:su-197481" >
Critical Observatio...
-
Osterwalder, S.Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skogens ekologi och skötsel,Department of Forest Ecology and Management,Université Grenoble Alpes,Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden
(author)
Critical Observations of Gaseous Elemental Mercury Air-Sea Exchange
- Article/chapterEnglish2021
Publisher, publication year, extent ...
-
American Geophysical Union (AGU),2021
-
printrdacarrier
Numbers
-
LIBRIS-ID:oai:DiVA.org:su-197481
-
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-197481URI
-
https://doi.org/10.1029/2020GB006742DOI
-
https://res.slu.se/id/publ/113579URI
-
https://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4247URI
-
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-451313URI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
Air-sea exchange of gaseous elemental mercury (Hg-0) is not well constrained, even though it is a major component of the global Hg cycle. Lack of Hg-0 flux measurements to validate parameterizations of the Hg-0 transfer velocity contributes to this uncertainty. We measured the Hg-0 flux on the Baltic Sea coast using micrometeorological methods (gradient-based and relaxed eddy accumulation [REA]) and also simulated the flux with a gas exchange model. The coastal waters were typically supersaturated with Hg-0 (mean +/- 1 sigma = 13.5 +/- 3.5 ng m(-3); ca. 10% of total Hg) compared to the atmosphere (1.3 +/- 0.2 ng m(-3)). The Hg-0 flux calculated using the gas exchange model ranged from 0.1-1.3 ng m(-2) h(-1) (10th and 90th percentile) over the course of the campaign (May 10-June 20, 2017) and showed a distinct diel fluctuation. The mean coastal Hg-0 fluxes determined with the two gradient-based approaches and REA were 0.3, 0.5, and 0.6 ng m(-2) h(-1), respectively. In contrast, the mean open sea Hg-0 flux measured with REA was larger (6.3 ng m(-2) h(-1)). The open sea Hg-0 flux indicated a stronger wind speed dependence for the Hg-0 transfer velocity compared to commonly used parameterizations. Although based on a limited data set, we suggest that the wind speed dependence of the Hg-0 transfer velocity is more consistent with gases that have less water solubility than CO2 (e.g., O-2). These pioneering flux measurements using micrometeorological techniques show that more such measurements would improve our understanding of air-sea Hg exchange.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Nerentorp, M.IVL Swedish Environmental Research Institute, Gothenburg, Sweden
(author)
-
Zhu, W.Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skogens ekologi och skötsel,Department of Forest Ecology and Management,Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden
(author)
-
Jiskra, M.Environmental Geosciences, University of Basel, Basel, Switzerland
(author)
-
Nilsson, Erik O.,1983-Uppsala universitet,Luft-, vatten- och landskapslära(Swepub:uu)erini203
(author)
-
Nilsson, MatsSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skogens ekologi och skötsel,Department of Forest Ecology and Management(Swepub:slu)47620
(author)
-
Rutgersson, Anna,1971-Uppsala universitet,Luft-, vatten- och landskapslära(Swepub:uu)aru27058
(author)
-
Sörensen, Anne L.Naturhistoriska riksmuseet,Stockholms universitet,Institutionen för miljövetenskap,Swedish Museum of Natural History, Sweden,Enheten för miljöforskning och övervakning(Swepub:nrm)annesore
(author)
-
Sommar, J.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China
(author)
-
Wallin, MarcusUppsala universitet,Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment,Uppsala University,Department of Earth Sciences, Air, Water and Landscape Science, Uppsala University, Uppsala, Sweden,Luft-, vatten- och landskapslära(Swepub:slu)52221
(author)
-
Wängberg, I.IVL Swedish Environmental Research Institute, Gothenburg, Sweden
(author)
-
Bishop, KevinSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment,Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden(Swepub:slu)47741
(author)
-
Sveriges lantbruksuniversitetInstitutionen för skogens ekologi och skötsel
(creator_code:org_t)
-
Sveriges lantbruksuniversitet
Related titles
-
In:Global Biogeochemical Cycles: American Geophysical Union (AGU)35:80886-62361944-9224
Internet link
Find in a library
To the university's database
- By the author/editor
-
Osterwalder, S.
-
Nerentorp, M.
-
Zhu, W.
-
Jiskra, M.
-
Nilsson, Erik O. ...
-
Nilsson, Mats
-
show more...
-
Rutgersson, Anna ...
-
Sörensen, Anne L ...
-
Sommar, J.
-
Wallin, Marcus
-
Wängberg, I.
-
Bishop, Kevin
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Earth and Relate ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Earth and Relate ...
-
and Oceanography Hyd ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Earth and Relate ...
-
and Meteorology and ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Earth and Relate ...
-
and Environmental Sc ...
- Articles in the publication
-
Global Biogeoche ...
- By the university
-
Stockholm University
-
Swedish University of Agricultural Sciences
-
Swedish Museum of Natural History
-
Uppsala University