Publication Abstracts

Miller et al. 2014

Miller, R.L., P. Knippertz, C. Pérez García-Pando, J.P. Perlwitz, and I. Tegen, 2014: Impact of dust radiative forcing upon climate. In Mineral Dust: A Key Player in the Earth System. P. Knippertz and J.-B.W. Stuut, Eds. Springer, pp. 327-357, doi:10.1007/978-94-017-8978-3_13.

Dust aerosols perturb the atmospheric radiative flux at both solar and thermal wavelengths, altering the energy and water cycles. The climate adjusts by redistributing energy and moisture, so that local temperature perturbations, for example, depend upon the forcing over the entire extent of the perturbed circulation. Within regions frequently mixed by deep convection, including the deep tropics, dust particles perturb the surface air temperature primarily through radiative forcing at the top of the atmosphere (TOA). Many models predict that dust reduces global precipitation. This reduction is typically attributed to the decrease of surface evaporation in response to dimming of the surface. A counterexample is presented, where greater shortwave absorption by dust increases evaporation and precipitation despite greater dimming of the surface. This is attributed to the dependence of surface evaporation upon TOA forcing through its influence upon surface temperature and humidity. Perturbations by dust to the surface wind speed and vegetation (through precipitation anomalies) feed back upon the dust aerosol concentration. The current uncertainty of radiative forcing attributed to dust and the resulting range of climate perturbations calculated by models remain a useful test of our understanding of the mechanisms relating dust radiative forcing to the climate response.

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BibTeX Citation

  author={Miller, R. L. and Knippertz, P. and Pérez García-Pando, C. and Perlwitz, J. P. and Tegen, I.},
  editor={Knippertz, P. and Stuut, J.-B. W.},
  title={Impact of dust radiative forcing upon climate},
  booktitle={Mineral Dust: A Key Player in the Earth System},
  address={Dordrecht, the Netherlands},

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RIS Citation

ID  - mi00120c
AU  - Miller, R. L.
AU  - Knippertz, P.
AU  - Pérez García-Pando, C.
AU  - Perlwitz, J. P.
AU  - Tegen, I.
ED  - Knippertz, P.
ED  - Stuut, J.-B. W.
PY  - 2014
TI  - Impact of dust radiative forcing upon climate
BT  - Mineral Dust: A Key Player in the Earth System
SP  - 327
EP  - 357
DO  - 10.1007/978-94-017-8978-3_13
PB  - Springer
CY  - Dordrecht, the Netherlands
ER  -

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