Characterization of African dust transported to Puerto Rico by individual particle and size segregated bulk analysis
Identifieur interne : 000A48 ( Main/Exploration ); précédent : 000A47; suivant : 000A49Characterization of African dust transported to Puerto Rico by individual particle and size segregated bulk analysis
Auteurs : Elizabeth A. Reid [États-Unis] ; Jeffrey S. Reid [États-Unis] ; Michael M. Meier [États-Unis] ; Michael R. Dunlap [États-Unis] ; Steven S. Cliff [États-Unis] ; Aaron Broumas [États-Unis] ; Kevin Perry [États-Unis] ; Hal Maring [États-Unis]Source :
- Journal of Geophysical Research: Atmospheres [ 0148-0227 ] ; 2003-10-16.
Abstract
As part of the Puerto Rico Dust Experiment (PRIDE), airborne and surface dust particle samples from Africa were collected and subjected to bulk elemental and single‐particle analysis. Airborne samples were collected on polycarbonate filters at various altitudes and underwent single‐particle scanning electron microscopy with energy dispersive analysis with X‐rays (EDAX) to derive elemental ratios of key soil elements. Particle chemistry was related to size and morphological characteristics. At the principle surface site, particles were collected on a Davis Rotating Drum (DRUM) cascade impactor strips in eight stages from 0.1 to 12 μm at 4 hour time resolution. These samples were subjected to X‐ray florescence (XRF) to determine bulk elemental composition from Al through Zn. The elemental data showed good correlation between the DRUM and the aircraft samples. Cluster analysis of single‐particle data resulted in 63 statistically significant clusters. Several clusters can be easily related to their parent mineralogical species. However, as dust particles are to a large extent aggregates, most clusters are based on a continuum of varied mineralogical species and cannot be easily categorized. With 60,500 total particles counted from the airborne filters, a statistically significant number of large particles could be analyzed. Estimated mean surface area modal diameter is ∼5 μm, with an average aspect ratio of 1.9. An apparent change in source region is seen in the morphological data and non alumino‐silicate minerals but is not seen in the aluminum to silicon ratio. We suspect homogenization during long‐range transport.
Url:
DOI: 10.1029/2002JD002935
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 001227
- to stream Istex, to step Curation: 000D46
- to stream Istex, to step Checkpoint: 000420
- to stream Main, to step Merge: 000A62
- to stream Main, to step Curation: 000A48
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Characterization of African dust transported to Puerto Rico by individual particle and size segregated bulk analysis</title><author><name sortKey="Reid, Elizabeth A" sort="Reid, Elizabeth A" uniqKey="Reid E" first="Elizabeth A." last="Reid">Elizabeth A. Reid</name></author><author><name sortKey="Reid, Jeffrey S" sort="Reid, Jeffrey S" uniqKey="Reid J" first="Jeffrey S." last="Reid">Jeffrey S. Reid</name></author><author><name sortKey="Meier, Michael M" sort="Meier, Michael M" uniqKey="Meier M" first="Michael M." last="Meier">Michael M. Meier</name></author><author><name sortKey="Dunlap, Michael R" sort="Dunlap, Michael R" uniqKey="Dunlap M" first="Michael R." last="Dunlap">Michael R. Dunlap</name></author><author><name sortKey="Cliff, Steven S" sort="Cliff, Steven S" uniqKey="Cliff S" first="Steven S." last="Cliff">Steven S. Cliff</name></author><author><name sortKey="Broumas, Aaron" sort="Broumas, Aaron" uniqKey="Broumas A" first="Aaron" last="Broumas">Aaron Broumas</name></author><author><name sortKey="Perry, Kevin" sort="Perry, Kevin" uniqKey="Perry K" first="Kevin" last="Perry">Kevin Perry</name></author><author><name sortKey="Maring, Hal" sort="Maring, Hal" uniqKey="Maring H" first="Hal" last="Maring">Hal Maring</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:DF09DF0C3F5DD94AA798B2642B8A707765C0BABF</idno><date when="2003" year="2003">2003</date><idno type="doi">10.1029/2002JD002935</idno><idno type="url">https://api.istex.fr/document/DF09DF0C3F5DD94AA798B2642B8A707765C0BABF/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001227</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001227</idno><idno type="wicri:Area/Istex/Curation">000D46</idno><idno type="wicri:Area/Istex/Checkpoint">000420</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000420</idno><idno type="wicri:doubleKey">0148-0227:2003:Reid E:characterization:of:african</idno><idno type="wicri:Area/Main/Merge">000A62</idno><idno type="wicri:Area/Main/Curation">000A48</idno><idno type="wicri:Area/Main/Exploration">000A48</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Characterization of African dust transported to Puerto Rico by individual particle and size segregated bulk analysis</title><author><name sortKey="Reid, Elizabeth A" sort="Reid, Elizabeth A" uniqKey="Reid E" first="Elizabeth A." last="Reid">Elizabeth A. Reid</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Science and Technology Corporation, Hampton, Virginia</wicri:regionArea><placeName><region type="state">Virginie</region></placeName></affiliation><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Space and Naval Warfare Systems Center, San Diego, California</wicri:regionArea><placeName><region type="state">Californie</region></placeName></affiliation><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Naval Research Laboratory, California, Monterey</wicri:regionArea><wicri:noRegion>Monterey</wicri:noRegion></affiliation><affiliation></affiliation></author><author><name sortKey="Reid, Jeffrey S" sort="Reid, Jeffrey S" uniqKey="Reid J" first="Jeffrey S." last="Reid">Jeffrey S. Reid</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Naval Research Laboratory, California, Monterey</wicri:regionArea><wicri:noRegion>Monterey</wicri:noRegion></affiliation></author><author><name sortKey="Meier, Michael M" sort="Meier, Michael M" uniqKey="Meier M" first="Michael M." last="Meier">Michael M. Meier</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Material Science and Chemical Engineering Department, University of California, California, Davis</wicri:regionArea><wicri:noRegion>Davis</wicri:noRegion></affiliation></author><author><name sortKey="Dunlap, Michael R" sort="Dunlap, Michael R" uniqKey="Dunlap M" first="Michael R." last="Dunlap">Michael R. Dunlap</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Material Science and Chemical Engineering Department, University of California, California, Davis</wicri:regionArea><wicri:noRegion>Davis</wicri:noRegion></affiliation></author><author><name sortKey="Cliff, Steven S" sort="Cliff, Steven S" uniqKey="Cliff S" first="Steven S." last="Cliff">Steven S. Cliff</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Material Science and Chemical Engineering Department, University of California, California, Davis</wicri:regionArea><wicri:noRegion>Davis</wicri:noRegion></affiliation></author><author><name sortKey="Broumas, Aaron" sort="Broumas, Aaron" uniqKey="Broumas A" first="Aaron" last="Broumas">Aaron Broumas</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Material Science and Chemical Engineering Department, University of California, California, Davis</wicri:regionArea><wicri:noRegion>Davis</wicri:noRegion></affiliation></author><author><name sortKey="Perry, Kevin" sort="Perry, Kevin" uniqKey="Perry K" first="Kevin" last="Perry">Kevin Perry</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Atmospheric Sciences, University of Utah, Utah, Salt Lake City</wicri:regionArea><wicri:noRegion>Salt Lake City</wicri:noRegion></affiliation></author><author><name sortKey="Maring, Hal" sort="Maring, Hal" uniqKey="Maring H" first="Hal" last="Maring">Hal Maring</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Rosenstiel School of Marine and Atmospheric Science, University of Miami, Florida, Miami</wicri:regionArea><wicri:noRegion>Miami</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Geophysical Research: Atmospheres</title><title level="j" type="abbrev">J. Geophys. Res.</title><idno type="ISSN">0148-0227</idno><idno type="eISSN">2156-2202</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2003-10-16">2003-10-16</date><biblScope unit="volume">108</biblScope><biblScope unit="issue">D19</biblScope><biblScope unit="page" from="/">n/a</biblScope><biblScope unit="page" to="/">n/a</biblScope></imprint><idno type="ISSN">0148-0227</idno></series><idno type="istex">DF09DF0C3F5DD94AA798B2642B8A707765C0BABF</idno><idno type="DOI">10.1029/2002JD002935</idno><idno type="ArticleID">2002JD002935</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0148-0227</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">As part of the Puerto Rico Dust Experiment (PRIDE), airborne and surface dust particle samples from Africa were collected and subjected to bulk elemental and single‐particle analysis. Airborne samples were collected on polycarbonate filters at various altitudes and underwent single‐particle scanning electron microscopy with energy dispersive analysis with X‐rays (EDAX) to derive elemental ratios of key soil elements. Particle chemistry was related to size and morphological characteristics. At the principle surface site, particles were collected on a Davis Rotating Drum (DRUM) cascade impactor strips in eight stages from 0.1 to 12 μm at 4 hour time resolution. These samples were subjected to X‐ray florescence (XRF) to determine bulk elemental composition from Al through Zn. The elemental data showed good correlation between the DRUM and the aircraft samples. Cluster analysis of single‐particle data resulted in 63 statistically significant clusters. Several clusters can be easily related to their parent mineralogical species. However, as dust particles are to a large extent aggregates, most clusters are based on a continuum of varied mineralogical species and cannot be easily categorized. With 60,500 total particles counted from the airborne filters, a statistically significant number of large particles could be analyzed. Estimated mean surface area modal diameter is ∼5 μm, with an average aspect ratio of 1.9. An apparent change in source region is seen in the morphological data and non alumino‐silicate minerals but is not seen in the aluminum to silicon ratio. We suspect homogenization during long‐range transport.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Californie</li><li>Virginie</li></region></list><tree><country name="États-Unis"><region name="Virginie"><name sortKey="Reid, Elizabeth A" sort="Reid, Elizabeth A" uniqKey="Reid E" first="Elizabeth A." last="Reid">Elizabeth A. Reid</name></region><name sortKey="Broumas, Aaron" sort="Broumas, Aaron" uniqKey="Broumas A" first="Aaron" last="Broumas">Aaron Broumas</name><name sortKey="Cliff, Steven S" sort="Cliff, Steven S" uniqKey="Cliff S" first="Steven S." last="Cliff">Steven S. Cliff</name><name sortKey="Dunlap, Michael R" sort="Dunlap, Michael R" uniqKey="Dunlap M" first="Michael R." last="Dunlap">Michael R. Dunlap</name><name sortKey="Maring, Hal" sort="Maring, Hal" uniqKey="Maring H" first="Hal" last="Maring">Hal Maring</name><name sortKey="Meier, Michael M" sort="Meier, Michael M" uniqKey="Meier M" first="Michael M." last="Meier">Michael M. Meier</name><name sortKey="Perry, Kevin" sort="Perry, Kevin" uniqKey="Perry K" first="Kevin" last="Perry">Kevin Perry</name><name sortKey="Reid, Elizabeth A" sort="Reid, Elizabeth A" uniqKey="Reid E" first="Elizabeth A." last="Reid">Elizabeth A. Reid</name><name sortKey="Reid, Elizabeth A" sort="Reid, Elizabeth A" uniqKey="Reid E" first="Elizabeth A." last="Reid">Elizabeth A. Reid</name><name sortKey="Reid, Jeffrey S" sort="Reid, Jeffrey S" uniqKey="Reid J" first="Jeffrey S." last="Reid">Jeffrey S. Reid</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Terre/explor/CobaltMaghrebV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000A48 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000A48 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Terre
|area= CobaltMaghrebV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= ISTEX:DF09DF0C3F5DD94AA798B2642B8A707765C0BABF
|texte= Characterization of African dust transported to Puerto Rico by individual particle and size segregated bulk analysis
}}
| This area was generated with Dilib version V0.6.32. |  |