[1] The response of the Arctic Ocean sea ice system to Northern Annular Mode-like wind forcing has been investigated using an ocean/sea ice general circulation model coupled to an atmospheric boundary layer model. A series of idealized experiments was performed to investigate the Arctic Ocean’s response to idealized winter wind anomalies on interannual to multi-decadal time scales. The sea ice ...

Sea-breeze-initiated convection and precipitation have been investigated along the east coast of India during the Indian southwest monsoon season. Seabreeze circulation was observed on approximately 70–80% of days during the summer months (June–August) along the Chennai coast. Average sea-breeze wind speeds are greater at rural locations than in the urban region of Chennai. Sea-breeze circulati...

Down-core variations in North Atlantic Paxs / Thxs have been interpreted as changes in the strength of the Atlantic Meridional Overturning Circulation (AMOC). This modelling study confirms that hypothetical changes in the AMOC would indeed be recorded as changes in the distribution of sedimentary Paxs / Thxs. At different sites in the North Atlantic the changes in sedimentary Pa / Th that we si...

We show (in confirmation of previous work) using oneand three-dimensional models that extratropical zonal wind anomalies, produced by fluctuating Rossby wave forcing in the troposphere, appear first in the stratosphere, and migrate downward into the troposphere. By systematically eliminating wave reflection and “downward control” through an induced meridional circulation, it is shown that the d...

In addition to the new cirrus cloud scheme described in Sect. 2.2, a prognostic cloud droplet number concentration (nl) equation for liquid clouds is added in the version of CAM3 used in this study compared with the version used in Liu et al. (2007a). Together with the prognostic liquid water mass (ql), ice water mass (qi), and ice crystal number concentration (ni), the complete set of equation...

A parameterisation of the soot aging for global climate models N. Riemer, H. Vogel, and B. Vogel Department of Mechanical and Aeronautical Engineering, University of California, Davis, USA Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Karlsruhe, Germany Received: 2 March 2004 – Accepted: 29 March 2004 – Published: 16 April 2004 Correspondence to: B. Vogel (bernhard....

iii Acknowledgments ..................................................................................... v CHAPTER