The 27-day solar rotational cycle in the Freie Universität Berlin Climate Middle Atmosphere Model with interactive chemistry (FUB CMAM CHEM) |
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| Authors: | J Lee Grenfell Markus Kunze Ulrike Langematz Peter Mieth Benedikt Steil |
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| Institution: | 1. Institut für Meteorologie, Freie Universität Berlin, Carl-Heinrich-Becker-Weg 6-10, 12165 Berlin, Germany;2. Max-Planck-Institut für Chemie (Otto-Hahn-Institut), Johann-Joachim-Becher-Weg 27, 55128 Mainz, Postfach 30 60, 55020 Mainz, Germany |
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| Abstract: | We simulate twenty, perpetual Januaries each under solar minimum and maximum conditions using the Freie Universität Berlin Climate Middle Atmosphere Model with interactive chemistry (FUB CMAM CHEM), including the 27-day solar rotational cycle. Cross-correlation functions (r) of tropical ozone and ultraviolet (UV) suggest peak values of +0.5 to +0.6 (with % changes in ozone of 0.4–0.6%) in the middle atmosphere. Temperature in the middle atmosphere varies with UV by up to 0.5 K, which appears to be mainly dynamical in origin. We calculate a signal associated with the rotational cycle in the troposphere, although this requires further investigations. |
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