Journal article

A simulation of the global distribution and radiative forcing of soil dust aerosols at the Last Glacial Maximum

Takemura T, Egashira M, Matsuzawa K, Ichijo H, O'Ishi R, Abe-Ouchi A ...see all

Atmospheric Chemistry and Physics, vol. 9, issue 9 (2009) pp. 3061-3073

  • 49

    Readers

    Mendeley users who have this article in their library.
  • 84

    Citations

    Citations of this article.
Sign in to save reference

Abstract

In this study an integrated simulation of the global distribution and the radiative forcing of soil dust aerosols at the Last Glacial Maximum (LGM) is performed with an aerosol climate model, SPRINTARS. It is compared with another simulation for the present climate condition. The global total emission flux of soil dust aerosols at the LGM is simulated to be about 2.4 times as large as that in the present climate, and the simulated deposition flux is in general agreement with estimations from ice core and marine sediment samplings though it appears to be underestimated over the Antarctic. The calculated direct radiative forcings of soil dust aerosols at the LGM is close to zero at the tropopause and −0.4 W m−2 at the surface. These radiative forcings are about twice as large as those in the present climate. SPRINTARS also includes the microphysical parameterizations of the cloud-aerosol interaction both for liquid water and ice crystals, which affect the radiation budget. The positive radiative forcing from the indirect effect of soil dust aerosols is mainly caused by their properties to act as ice nuclei. This effect is simulated to be smaller (−0.9 W m−2) at the LGM than in the present. It is suggested that atmospheric dust might contribute to the cold climate during the glacial periods both through the direct and indirect effects, relative to the interglacial periods.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text

Authors

  • T. Takemura

  • M. Egashira

  • K. Matsuzawa

  • H. Ichijo

  • R. O'Ishi

  • A. Abe-Ouchi

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free