Asian and Trans-Pacific Dust: A Multimodel and Multiremote Sensing Observation Analysis

Dongchul Kim, Mian Chin, Hongbin Yu, Xiaohua Pan, Huisheng Bian, Qian Tan, Ralph A. Kahn, Kostas Tsigaridis, Susanne E. Bauer, Toshihiko Takemura, Luca Pozzoli, Nicolas Bellouin, Michael Schulz

Research output: Contribution to journalArticle

Abstract

Dust is one of the dominant aerosol types over Asia and the North Pacific Ocean, but quantitative estimation of dust distribution and its contribution to the total regional aerosol load from observations is challenging due to the presence of significant anthropogenic and natural aerosols and the frequent influence of clouds over the region. This study presents the dust aerosol distributions over Asia and the North Pacific using simulations from five global models that participated in the AeroCom phase II model experiments, and from multiple satellite remote sensing and ground-based measurements of total aerosol optical depth and dust optical depth. We examine various aspects of aerosol and dust presence in our study domain: (1) the horizontal distribution, (2) the longitudinal gradient during trans-Pacific transport, (3) seasonal variations, (4) vertical profiles, and (5) model-simulated dust life cycles. This study reveals that dust optical depth model diversity is driven mostly by diversity in the dust source strength, followed by residence time and mass extinction efficiency.

Original languageEnglish
Pages (from-to)13534-13559
Number of pages26
JournalJournal of Geophysical Research: Atmospheres
Volume124
Issue number23
DOIs
Publication statusAccepted/In press - Jan 1 2019

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

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    Kim, D., Chin, M., Yu, H., Pan, X., Bian, H., Tan, Q., Kahn, R. A., Tsigaridis, K., Bauer, S. E., Takemura, T., Pozzoli, L., Bellouin, N., & Schulz, M. (Accepted/In press). Asian and Trans-Pacific Dust: A Multimodel and Multiremote Sensing Observation Analysis. Journal of Geophysical Research: Atmospheres, 124(23), 13534-13559. https://doi.org/10.1029/2019JD030822