Plutonium-238 observations as a test of modelled transport and surface deposition of meteoric smoke particles
There are large uncertainties in the transport and surface deposition of upper atmospheric particles used to construct climate proxies. Here we use a 3-D chemistry-climate model (CCM) to simulate the transport and deposition of plutonium-238 oxide nanoparticles formed after the ablation of a power u...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union
2013
|
Subjects: | |
Online Access: | https://eprints.whiterose.ac.uk/80033/ https://eprints.whiterose.ac.uk/80033/2/Plutonium-238%20observations%20as%20a%20test%20of%20modeled%20transport%20and%20surface%20deposition%20of%20meteoric%20smoke%20particles.pdf https://doi.org/10.1002/grl.50840 |
id |
ftleedsuniv:oai:eprints.whiterose.ac.uk:80033 |
---|---|
record_format |
openpolar |
spelling |
ftleedsuniv:oai:eprints.whiterose.ac.uk:80033 2023-05-15T13:41:04+02:00 Plutonium-238 observations as a test of modelled transport and surface deposition of meteoric smoke particles Dhomse, SS Saunders, RW Tian, W Chipperfield, MP Plane, JMC 2013-08-28 text https://eprints.whiterose.ac.uk/80033/ https://eprints.whiterose.ac.uk/80033/2/Plutonium-238%20observations%20as%20a%20test%20of%20modeled%20transport%20and%20surface%20deposition%20of%20meteoric%20smoke%20particles.pdf https://doi.org/10.1002/grl.50840 en eng American Geophysical Union https://eprints.whiterose.ac.uk/80033/2/Plutonium-238%20observations%20as%20a%20test%20of%20modeled%20transport%20and%20surface%20deposition%20of%20meteoric%20smoke%20particles.pdf Dhomse, SS, Saunders, RW, Tian, W et al. (2 more authors) (2013) Plutonium-238 observations as a test of modelled transport and surface deposition of meteoric smoke particles. Geophysical Research Letters, 40 (16). 4454 - 4458. ISSN 0094-8276 Article NonPeerReviewed 2013 ftleedsuniv https://doi.org/10.1002/grl.50840 2023-01-30T21:28:23Z There are large uncertainties in the transport and surface deposition of upper atmospheric particles used to construct climate proxies. Here we use a 3-D chemistry-climate model (CCM) to simulate the transport and deposition of plutonium-238 oxide nanoparticles formed after the ablation of a power unit in the upper stratosphere (~11°S) in 1964. The model reproduces both the observed hemispheric asymmetry and time scale of Pu-238 deposition. We then use the CCM to investigate the transport of meteoric smoke particles (MSPs) from the upper mesosphere. The strongest MSP deposition is predicted to occur at middle latitudes, providing a significant source of Fe fertilization to the Southern Ocean. The model also predicts substantially more deposition in Greenland than in Antarctica (by a factor of ~15, in agreement with ice core measurements), showing that climate proxy measurements from a limited number of sites must be interpreted with care. Article in Journal/Newspaper Antarc* Antarctica Greenland ice core Southern Ocean White Rose Research Online (Universities of Leeds, Sheffield & York) Greenland Southern Ocean Geophysical Research Letters 40 16 4454 4458 |
institution |
Open Polar |
collection |
White Rose Research Online (Universities of Leeds, Sheffield & York) |
op_collection_id |
ftleedsuniv |
language |
English |
description |
There are large uncertainties in the transport and surface deposition of upper atmospheric particles used to construct climate proxies. Here we use a 3-D chemistry-climate model (CCM) to simulate the transport and deposition of plutonium-238 oxide nanoparticles formed after the ablation of a power unit in the upper stratosphere (~11°S) in 1964. The model reproduces both the observed hemispheric asymmetry and time scale of Pu-238 deposition. We then use the CCM to investigate the transport of meteoric smoke particles (MSPs) from the upper mesosphere. The strongest MSP deposition is predicted to occur at middle latitudes, providing a significant source of Fe fertilization to the Southern Ocean. The model also predicts substantially more deposition in Greenland than in Antarctica (by a factor of ~15, in agreement with ice core measurements), showing that climate proxy measurements from a limited number of sites must be interpreted with care. |
format |
Article in Journal/Newspaper |
author |
Dhomse, SS Saunders, RW Tian, W Chipperfield, MP Plane, JMC |
spellingShingle |
Dhomse, SS Saunders, RW Tian, W Chipperfield, MP Plane, JMC Plutonium-238 observations as a test of modelled transport and surface deposition of meteoric smoke particles |
author_facet |
Dhomse, SS Saunders, RW Tian, W Chipperfield, MP Plane, JMC |
author_sort |
Dhomse, SS |
title |
Plutonium-238 observations as a test of modelled transport and surface deposition of meteoric smoke particles |
title_short |
Plutonium-238 observations as a test of modelled transport and surface deposition of meteoric smoke particles |
title_full |
Plutonium-238 observations as a test of modelled transport and surface deposition of meteoric smoke particles |
title_fullStr |
Plutonium-238 observations as a test of modelled transport and surface deposition of meteoric smoke particles |
title_full_unstemmed |
Plutonium-238 observations as a test of modelled transport and surface deposition of meteoric smoke particles |
title_sort |
plutonium-238 observations as a test of modelled transport and surface deposition of meteoric smoke particles |
publisher |
American Geophysical Union |
publishDate |
2013 |
url |
https://eprints.whiterose.ac.uk/80033/ https://eprints.whiterose.ac.uk/80033/2/Plutonium-238%20observations%20as%20a%20test%20of%20modeled%20transport%20and%20surface%20deposition%20of%20meteoric%20smoke%20particles.pdf https://doi.org/10.1002/grl.50840 |
geographic |
Greenland Southern Ocean |
geographic_facet |
Greenland Southern Ocean |
genre |
Antarc* Antarctica Greenland ice core Southern Ocean |
genre_facet |
Antarc* Antarctica Greenland ice core Southern Ocean |
op_relation |
https://eprints.whiterose.ac.uk/80033/2/Plutonium-238%20observations%20as%20a%20test%20of%20modeled%20transport%20and%20surface%20deposition%20of%20meteoric%20smoke%20particles.pdf Dhomse, SS, Saunders, RW, Tian, W et al. (2 more authors) (2013) Plutonium-238 observations as a test of modelled transport and surface deposition of meteoric smoke particles. Geophysical Research Letters, 40 (16). 4454 - 4458. ISSN 0094-8276 |
op_doi |
https://doi.org/10.1002/grl.50840 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
16 |
container_start_page |
4454 |
op_container_end_page |
4458 |
_version_ |
1766145457020469248 |