Comparison of modelled and observed Arctic denitrification
نویسندگان
چکیده
3-D microphysical model studies of Arctic denitrification: comparison with observations S. Davies, G. W. Mann, K. S. Carslaw, M. P. Chipperfield, J. A. Kettleborough, M. L. Santee, H. Oelhaf, G. Wetzel, Y. Sasano, and T. Sugita Institute for Atmospheric Science, School of Earth and the Environment, University of Leeds, UK Rutherford Appleton Laboratory, Didcot, Oxford, UK Jet Propulsion Laboratory, Pasadena, California, USA Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany National Institute for Environmental Studies, Ibaraki, Japan
منابع مشابه
3-D microphysical model studies of Arctic denitrification: comparison with observations
Simulations of Arctic denitrification using a 3D chemistry-microphysics transport model are compared with observations for the winters 1994/95, 1996/97 and 1999/2000. The model of Denitrification by Lagrangian Particle Sedimentation (DLAPSE) couples the full chemical scheme of the 3-D chemical transport model, SLIMCAT, with a nitric acid trihydrate (NAT) growth and sedimentation scheme. We use ...
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A three-dimensional (3-D) chemical transport model (CTM), SLIMCAT, has been used to quantify the effect of denitrification on ozone loss for the Arctic winter 2004/2005. The simulated HNO3 is found to be highly sensitive to the polar stratospheric cloud (PSC) scheme used in the model. Here the standard SLIMCAT full chemistry model, which uses a thermodynamic equilibrium PSC scheme, overpredicts...
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Homogeneous freezing of nitric acid hydrate particles can produce a polar freezing belt in either hemisphere that can cause denitrification. Computed denitrification profiles for one Antarctic and two Arctic cold winters are presented. The vertical range over which denitrification occurs is normally quite deep in the Antarctic but limited in the Arctic. A 4 kelvin decrease in the temperature of...
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Upper Atmosphere Research Satellite observations indicate that extensive denitrification without significant dehydration currently occurs only in the Antarctic during mid to late June. The fact that denitrification occurs in a relatively warm month in the Antarctic raises concern about the likelihood of its occurrence and associated effects on ozone recovery in a colder and possibly more humid ...
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تاریخ انتشار 2004