Transport of mineral and anthropogenic aerosols during a Kosa event over East Asia

Mitsu Uematsu, Akifumi Yoshikawa, Hiroaki Muraki, Kimio Arao, Itsushi Uno

Research output: Contribution to journalArticle

77 Citations (Scopus)

Abstract

A quantitative appraisal of the formation processes and distribution of mineral aerosols internally mixed with anthropogenic substances is necessary for estimating the aerosol radiative forcing, especially over the North Pacific region. A large-scale Kosa ("Yellow Dust") phenomenon associated with the movement of a low-pressure system was observed at Nagasaki, about 1000 km east of the Asian continent in the spring of 1996. During the Kosa period (April 16-17), fine sulfur particles appeared first, and after 12 hours, a major plume of large mineral particles reached Nagasaki, which was detected and measured by the single-particle analysis with sampling intervals of 2 hours. The results demonstrate that Asian dust storms are occasionally capable of transporting mineral and anthropogenic particles in separate air masses from the source regions via the marginal seas to the western North Pacific. We note that it takes a certain time to admix the different air masses containing various types of aerosols along their transport paths from the Asian continent to remote marine atmosphere. The interactions of mineral particles with anthropogenic substances predominantly take place within the marine boundary layer toward the east over the North Pacific.

Original languageEnglish
Pages (from-to)3-1
Number of pages3
JournalJournal of Geophysical Research D: Atmospheres
Volume107
Issue number7-8
Publication statusPublished - Apr 27 2002

Fingerprint

aerosols
Aerosols
East Asia
Minerals
minerals
aerosol
mineral
air masses
Dust
continents
air mass
Aonidiella citrina
dust storms
marine atmosphere
low pressure system
Air
air
radiative forcing
Sulfur
marginal sea

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

Transport of mineral and anthropogenic aerosols during a Kosa event over East Asia. / Uematsu, Mitsu; Yoshikawa, Akifumi; Muraki, Hiroaki; Arao, Kimio; Uno, Itsushi.

In: Journal of Geophysical Research D: Atmospheres, Vol. 107, No. 7-8, 27.04.2002, p. 3-1.

Research output: Contribution to journalArticle

Uematsu, Mitsu ; Yoshikawa, Akifumi ; Muraki, Hiroaki ; Arao, Kimio ; Uno, Itsushi. / Transport of mineral and anthropogenic aerosols during a Kosa event over East Asia. In: Journal of Geophysical Research D: Atmospheres. 2002 ; Vol. 107, No. 7-8. pp. 3-1.
@article{b9b38acc7bef4aefb909d3ee3a2262f9,
title = "Transport of mineral and anthropogenic aerosols during a Kosa event over East Asia",
abstract = "A quantitative appraisal of the formation processes and distribution of mineral aerosols internally mixed with anthropogenic substances is necessary for estimating the aerosol radiative forcing, especially over the North Pacific region. A large-scale Kosa ({"}Yellow Dust{"}) phenomenon associated with the movement of a low-pressure system was observed at Nagasaki, about 1000 km east of the Asian continent in the spring of 1996. During the Kosa period (April 16-17), fine sulfur particles appeared first, and after 12 hours, a major plume of large mineral particles reached Nagasaki, which was detected and measured by the single-particle analysis with sampling intervals of 2 hours. The results demonstrate that Asian dust storms are occasionally capable of transporting mineral and anthropogenic particles in separate air masses from the source regions via the marginal seas to the western North Pacific. We note that it takes a certain time to admix the different air masses containing various types of aerosols along their transport paths from the Asian continent to remote marine atmosphere. The interactions of mineral particles with anthropogenic substances predominantly take place within the marine boundary layer toward the east over the North Pacific.",
author = "Mitsu Uematsu and Akifumi Yoshikawa and Hiroaki Muraki and Kimio Arao and Itsushi Uno",
year = "2002",
month = "4",
day = "27",
language = "English",
volume = "107",
pages = "3--1",
journal = "Journal of Geophysical Research",
issn = "0148-0227",
number = "7-8",

}

TY - JOUR

T1 - Transport of mineral and anthropogenic aerosols during a Kosa event over East Asia

AU - Uematsu, Mitsu

AU - Yoshikawa, Akifumi

AU - Muraki, Hiroaki

AU - Arao, Kimio

AU - Uno, Itsushi

PY - 2002/4/27

Y1 - 2002/4/27

N2 - A quantitative appraisal of the formation processes and distribution of mineral aerosols internally mixed with anthropogenic substances is necessary for estimating the aerosol radiative forcing, especially over the North Pacific region. A large-scale Kosa ("Yellow Dust") phenomenon associated with the movement of a low-pressure system was observed at Nagasaki, about 1000 km east of the Asian continent in the spring of 1996. During the Kosa period (April 16-17), fine sulfur particles appeared first, and after 12 hours, a major plume of large mineral particles reached Nagasaki, which was detected and measured by the single-particle analysis with sampling intervals of 2 hours. The results demonstrate that Asian dust storms are occasionally capable of transporting mineral and anthropogenic particles in separate air masses from the source regions via the marginal seas to the western North Pacific. We note that it takes a certain time to admix the different air masses containing various types of aerosols along their transport paths from the Asian continent to remote marine atmosphere. The interactions of mineral particles with anthropogenic substances predominantly take place within the marine boundary layer toward the east over the North Pacific.

AB - A quantitative appraisal of the formation processes and distribution of mineral aerosols internally mixed with anthropogenic substances is necessary for estimating the aerosol radiative forcing, especially over the North Pacific region. A large-scale Kosa ("Yellow Dust") phenomenon associated with the movement of a low-pressure system was observed at Nagasaki, about 1000 km east of the Asian continent in the spring of 1996. During the Kosa period (April 16-17), fine sulfur particles appeared first, and after 12 hours, a major plume of large mineral particles reached Nagasaki, which was detected and measured by the single-particle analysis with sampling intervals of 2 hours. The results demonstrate that Asian dust storms are occasionally capable of transporting mineral and anthropogenic particles in separate air masses from the source regions via the marginal seas to the western North Pacific. We note that it takes a certain time to admix the different air masses containing various types of aerosols along their transport paths from the Asian continent to remote marine atmosphere. The interactions of mineral particles with anthropogenic substances predominantly take place within the marine boundary layer toward the east over the North Pacific.

UR - http://www.scopus.com/inward/record.url?scp=0037181930&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037181930&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0037181930

VL - 107

SP - 3

EP - 1

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

SN - 0148-0227

IS - 7-8

ER -