SIBER SPIS sept 2011.pdf - IMBER

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SIBER Science Plan and Implementation Strategy Participants in the SIBER Science Plan Writing Workshop, National Institute of Oceanography, Goa, India, 27-30 November 2007. Name Country Organization Anya Waite Australia U. Western Australia Richard Matear Australia CSIRO Lynnath Beckley Australia Murdoch U. Catherine Goyet France U. Perpignan Laure Resplandy France LOCEAN Jerome Vialard France LOCEAN Tim Rixen Germany CTME Wajih Naqvi India NIO Satish Shetye India NIO Dileep Kumar India NIO Rosamma Stephen India NIORC P. K. Karuppasamy India NIORC M. M. Sarin India PRL V.S.N. Murty India NIO Mangesh Gauns India NIO Hiroshi Kitazato Japan JAMSTEC Faiza Al-Yamani Kuwait KISR A. F. (Lex) Bouwman Netherlands RIVM Adnan Al-Azri Oman SQU Ursula Witte UK U. Aberdeen Raleigh Hood USA U. Maryland Jerry Wiggert USA ODU Dale Haidvogel USA Rutgers John Kindle USA NRL Joaquim Goes USA Bigelow Labs Karl Banse USA U. Washington Bernie Zahuranec USA ONR retired Mike Landry USA SIO Ajit Subramaniam USA LDEO 84
SIBER Science Plan and Implementation Strategy Ap p e n d i x III. Is s u e s to b e c o n s i d e r e d in SIBER m o d e l d e v e l o p m e n t This appendix is based upon recommendations put forward in Appendix III of the ICED Science Plan and Implementation Strategy (Murphy et al., 2008). SIBER will therefore adopt a strategy for model development that is consistent with ICED. One of the first challenges to address is to define the theoretical and technical process required to model whole ocean biogeochemical cycles and ecosystem dynamics. It is imperative to identify the main areas and building blocks that will provide the underlying understanding required to inform and evaluate these models. Some key science areas and associated model requirements are listed below. Objective 1: To understand the structure and dynamics of biogeochemical cycles and ecosystem dynamics in the Indian Ocean and how they might be affected by climate change and anthropogenic impacts The development of models of IO biogeochemical cycles and ecosystem dynamics is still at an early stage and much of the work undertaken to date has been of restricted geographical or trophic scope. There are major questions regarding the criteria that should be used to develop realistic models of IO ecosystems. Model development should involve consideration of the following issues: 1. The development of integrated biogeochemical and ecosystem models must be done in conjunction with experimental and field studies to provide the basis for model parameterizations. 2. A range of approaches to food web representation is required, involving models with different spatial, temporal and trophic complexity. Specific issues include the effects of horizontal advection of chemical and biological materials (see below) and the effects of behavioral processes, such as vertical migration of plankton or predator-prey interactions. The importance of energy transfer from phytoplankton to upper trophic levels in structuring food webs, and the spatial and temporal resolution required for coupling lower trophic level models with those developed for top predators are important issues, as are regional differences and the links between benthic and pelagic systems, particularly in coastal regions. 3. The development of coupled physical-biological models will require close collaboration with physical modeling groups. As a basis for SIBER modeling efforts physical models that provide outputs relevant to the scales of operation of the biological processes under consideration are required, for example such models may include: basinwide atmosphereocean models (e.g. OFAM/BLUElink), coupled models for key regions of the IO, such as the AS, the BoB, the equatorial zone, and the Leeuwin and Agulhas Current systems, and high resolution mesoscale (10s-100s km) models of shelf and cross-shelf, island and frontal regions and processes. 85
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