International Collaborations within SHARP

Cooperation with NIWA

The NIWA research facility at Lauder (New Zealand) is the southern hemisphere mid-latitude charter site in the international Network for Detection of Atmospheric Composition Changes. A wide range of measurements of atmospheric trace gases, aerosols and radiation are made at the site. NIWA Lauder has a modelling group that operates the two CCM, UMETRAC and SOCOL.

Greg Bodeker, Dr., who will lead the collaboration with SHARP, is the NIWA Science Leader for Human Impacts on the Atmosphere and of the NIWA International Polar Year (IPY) programme on chemistry-climate modelling of the recovery of the Antarctic ozone hole. He is an acknowledged expert on stratospheric ozone and has been co- and lead-author to IPCC reports and WMO/UNEP ozone assessment reports. He has extensive experience in measurements of stratospheric composition. He will provide data from REF1/REF2 simulations with the UMETRAC and SOCOL CCMs and actively contribute to the scientific analyses in SHARP-BDC and SHARP-STC. For the analyses in SHARP-OCF, he will enable access to the recently compiled data base of ozone observations. He will further contribute statistical tools for the transient model simulations.

Petra Huck, Dr., is a postdoctoral research scientist at NIWA. She is involved in the development of diagnostic tools to test the ability and uncertainties of CCMs to predict the evolution of stratospheric ozone. She will cooperate in the analysis of the CCM simulations in SHARP-OCF. She will contribute to SHARP as part of her DFG-Research Grant (Improving the ability of coupled chemistry-climate models to project future changes in polar stratospheric ozone and its influence on surface climate in the polar regions).

Cooperation with Universityof Cambridge

Peter Braesicke, Dr., NCAS-Climate core-funded scientist, is at the Centre for Atmospheric Science (CAS) at the University of Cambridge. He has worked extensively on fundamental problems of chemistry-climate interactions for 10 years. Contributions include: chemistry-climate coupling in middle latitudes sea-surface temperature impacts on ozone, idealised climate change studies, and tropical transport studies. He is involved in the joint Met Office/NCAS development of a new community chemistry-climate model. Dr. Braesicke will provide data from REF1/REF2 simulations with the UKCA CCM to SHARP and actively contribute to the scientific analyses in SHARP-BDC and SHARP-STC.

Cooperation with Universityof Utrecht

Thomas Röckmann, Prof. Dr., is Professor for Atmospheric Physics and Chemistry at the Institute for Marine and Atmospheric Research Utrecht (IMAU), University of Utrecht, The Netherlands, and expert for studies of physical and chemical processes in the atmosphere using isotopes as process tracers. He will support the scientific analysis of HDO global distributions from MIPAS with respect to transport processes through the tropopause and the role of methane oxidation for the stratospheric water vapour budget, as proposed within SHARP-WV. A formal co-operation exists since 2004.

Cooperation with UKMet Office

Adam Scaife, Dr., lead scientist for Modelling Climate Variability at the Hadley Centre, UK Met Office (UK), who is an expert in both stratospheric dynamics and tropospheric climate variability. He recently studied the impact of the representation of stratospheric processes in climate models on the reproduction of observed trends. He will support the analyses of the observational and model data in SHARP-STC. A first cooperation has recently been initiated, in which results of the FUB EGMAM model are analysed jointly.

Cooperation with Columbia University, New York

Edwin Gerber, Dr., is a postdoctoral research scientist in the Dept. of Applied Physics and Applied Mathematics at Columbia University, New York. He has a strong background in idealised modelling of the atmosphere, with a general focus on intra-seasonal variability, in particular on the North Atlantic Oscillation and Annular Modes. His interest in the spatial structure and temporal structure of these modes led him to the stratosphere, which influence the troposphere through these patterns. To investigate the link between the stratosphere and troposphere, he developed a Simplified General Circulation Model (SGCM) that captures the key features of coupling on intra-seasonal time scales. He is involved with the idealised modelling component of the DynVar project of SPARC. He will support the studies on stratosphere-troposphere dynamical coupling in SHARP-STC with simulations of his idealised GCM.

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