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Research topics:
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The application of feedback analysis tools
from control-engineering to research problems in climate dynamics; principally
understanding geoengineering, and understanding climate variability.
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System identification tools from
control-engineering, applied to climate systems, and to the El Nino/Southern
Oscillation (ENSO) in particular. This provides a mechanism both for better
understanding the Earth's climate system, and for comparing the dynamics of
the real world with models at a mechanistic level rather than simply at the behavioural level.
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The dynamics of intentional climate
intervention (geoengineering, and solar radiation management in particular).
First paper looking at how long it takes to learn something from a full-scale test,
based on signal-to-noise ratios. Working on geoengineering optimization (in progress),
And (for fun) first paper demonstrating that control
of El Nino is within the scale of human action; the intent here is not to
suggest that this is a good idea, but rather to change our perceptions about
the scale of human influence on the climate.
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Understanding how to develop robust
feedback control strategies for high-dimensional, fundamentally nonlinear
fluid systems; current research joint with Prof. Tim Colonius is in the
context of flow control (e.g. fluid separation), but is relevant to
understanding dynamics of intervention in the climate system.
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I am also fascinated by the question of
why people are so averse to believing in basic physics, but that isn't a
subject I do research on...
Recent news:
Relevant Publications:
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MacMynowski, D. G., Keith, D., Caldeira, K., and Shin, H.-J., “Can we test
geoengineering?” Energy and Environmental Science, 2011.
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MacMynowski,
D. G., Shin, H.-J., and Caldeira, K.., “The
frequency response of temperature and precipitation in a climate model”, Geophysical Research Letters,
38, L16711, 2011. (Supplemental
material.)
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MacMynowski, D. G. and Tziperman, E., “Using transfer functions to quantify ENSO
dynamics in data and models”, submitted, Phil. Trans. Royal Soc. A, 2011.
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MacMynowski, D. G. and Tziperman, E., “Testing and improving ENSO models by
process, using transfer functions”, Geophysical Research Letters,
37,
L19701, 2010.
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MacMynowski, D. G. “Can we control El Nino?”,
Vol 4, Environmental
Research Letters, 2009.
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MacMynowski, D. G. and E. Tziperman, "Factors
affecting ENSO's period", J. Atmospheric Sciences,
Vol. 65, No. 5, pp. 1570-1586, 2008.
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MacMynowski, D. G. and E. Tziperman, "Two-Way
Feedback Interaction between the Thermohaline and Wind-Driven Circulations",
J. Physical Oceanography,
Vol. 36, No. 5,
pp. 914-929, 2006.
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