Summertime observations of elevated levels of ultrafine particles in the high Arctic marine boundary layer

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • Julia Burkart
  • Megan D Willis
  • Heiko Bozem
  • Jennie L Thomas
  • Kathy Law
  • Peter Hoor
  • Amir A Aliabadi
  • Franziska Koellner
  • Johannes Schneiders
  • Andreas Herber
  • Jonathan PD Abbatt
  • W Richard Leaitch
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000400506500002&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.5194/acp-17-5515-2017
eISSN
1680-7324
Externe Identifier
  • Clarivate Analytics Document Solution ID: ET7VE
ISSN
1680-7316
Ausgabe der Veröffentlichung
8
Zeitschrift
ATMOSPHERIC CHEMISTRY AND PHYSICS
Paginierung
5515 - 5535
Datum der Veröffentlichung
2017
Status
Published
Titel
Summertime observations of elevated levels of ultrafine particles in the high Arctic marine boundary layer
Sub types
  • Article
Ausgabe der Zeitschrift
17

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:p>Abstract. Motivated by increasing levels of open ocean in the Arctic summer and the lack of prior altitude-resolved studies, extensive aerosol measurements were made during 11 flights of the NETCARE July 2014 airborne campaign from Resolute Bay, Nunavut. Flights included vertical profiles (60 to 3000 m above ground level) over open ocean, fast ice, and boundary layer clouds and fogs. A general conclusion, from observations of particle numbers between 5 and 20 nm in diameter (N5 − 20), is that ultrafine particle formation occurs readily in the Canadian high Arctic marine boundary layer, especially just above ocean and clouds, reaching values of a few thousand particles cm−3. By contrast, ultrafine particle concentrations are much lower in the free troposphere. Elevated levels of larger particles (for example, from 20 to 40 nm in size, N20 − 40) are sometimes associated with high N5 − 20, especially over low clouds, suggestive of aerosol growth. The number densities of particles greater than 40 nm in diameter (N &gt;  40) are relatively depleted at the lowest altitudes, indicative of depositional processes that will lower the condensation sink and promote new particle formation. The number of cloud condensation nuclei (CCN; measured at 0.6 % supersaturation) are positively correlated with the numbers of small particles (down to roughly 30 nm), indicating that some fraction of these newly formed particles are capable of being involved in cloud activation. Given that the summertime marine Arctic is a biologically active region, it is important to better establish the links between emissions from the ocean and the formation and growth of ultrafine particles within this rapidly changing environment. </jats:p>
Autoren
  • Julia Burkart
  • Megan D Willis
  • Heiko Bozem
  • Jennie L Thomas
  • Kathy Law
  • Peter Hoor
  • Amir A Aliabadi
  • Franziska Köllner
  • Johannes Schneider
  • Andreas Herber
  • Jonathan PD Abbatt
  • W Richard Leaitch
DOI
10.5194/acp-17-5515-2017
eISSN
1680-7324
Ausgabe der Veröffentlichung
8
Zeitschrift
Atmospheric Chemistry and Physics
Sprache
en
Online publication date
2017
Paginierung
5515 - 5535
Status
Published online
Herausgeber
Copernicus GmbH
Herausgeber URL
http://dx.doi.org/10.5194/acp-17-5515-2017
Datum der Datenerfassung
2021
Titel
Summertime observations of elevated levels of ultrafine particles in the high Arctic marine boundary layer
Ausgabe der Zeitschrift
17

Datenquelle: Crossref

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