Interannual variability of Mars global dust storms: an example of self-organized criticality?

Details Interannual variability of Mars global dust storms: an example of self-organized criticality? Interannual variability of Mars global dust storms: an example of self-organized criticality?

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004icar..170..514p&link_type=abstract

Icarus, Volume 170, Issue 2, p. 514-518.

Physics

7

Mars, Climate, Atmosphere, Surface

Scientific paper

Previous simulations of martian global dust storms with a simple low-order model showed the desired interannual variability of storms if one of the model parameters-the threshold wind speed for starting saltation and lifting dust from the surface-was finely tuned. In this paper we show that the fine-tuning of this parameter could be the result of negative feedback in which processes associated with global dust storms raise the threshold and small-scale processes like dust devils, which are active in years between the storms, lower the threshold.

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