The CSIRO Mk3 climate system model contains a comprehensive representation of the four major components of the climate system (oceans, land surface, atmosphere and sea-ice), and in its current form is as comprehensive as any of the global coupled models available worldwide. The major aim in the development of the CSIRO Mk3 climate model has been to provide a coupled atmosphere-ocean system that gives a significantly improved representation of the current climate relative to the prior model generations The CSIRO Mk3 model will be used to investigate the dynamical and physical processes controlling the climate system, for multiseasonal predictions, and for investigations of natural climatic variability and climatic change.
A1 scenario family
The A1 scenario family describes a future world of very rapid economic growth, global population that peaks in mid-century and declines thereafter, and the rapid introduction of new and more efficient technologies. Major underlying themes are convergence among regions, capacity building and increased cultural and social interactions, with a substantial reduction in regional differences in per capita income. The A1 scenario family develops into three groups that describe alternative directions of technological change in the energy system. The three A1 groups are distinguished by their technological emphasis: fossil intensive (A1FI), non-fossil energy sources (A1T), or a balance across all sources (A1B).
Af - Tropical rainforest climate, Am - Tropical monsoon climate,Aw - Tropical savanna climate, BSh - Hot semi-arid climates, BSk - Cold semi-arid climates, BWh - Hot desert climates, BWk - Cold desert climates, Cfa - Humid subtropical climate, Cfb - Oceanic climate, Cfc - Subpolar oceanic climate, Csa - Hot-summer Mediterranean climate, Csb - Warm-summer Mediterranean climate, Cwa - Humid subtropical climate, Cwb - Subtropical highland oceanic climate, Dfa - Hot humid continental climate, Dfb - Warm humid continental climate, Dfc - Subarctic climate, Dfd - Subarctic climate, Dsa - Hot humid continental climate, Dsb - Warm humid continental climate, Dsc - Subarctic climate, Dwa - Humid continental climate, Dwb - Warm humid continental climate, Dwc - Subarctic climate, ET - Tundra climate.
A2 scenario family
The A2 scenario family describes a very heterogeneous world. The underlying theme is self-reliance and preservation of local identities. Fertility patterns across regions converge very slowly, which results in continuously increasing population. Economic development is primarily regionally oriented and per capita economic growth and technological change more fragmented and slower than other storylines.
The Model for Interdisciplinary Research on Climate (MIROC), which is the coupled general circulation model used in the K-1 project, consists of five componet models: atmosphere, land, river, sea ice, and ocean. The atmospheric component interacts with the land and sea ice components. The air-sea exchange is realized exclusively between the atmosphere and sea ice components, not directly between the atmosphere and ocean components, and the ocean component interacts only with the sea ice component. That is, air-sea flux at ice-free grids is consequently passed to the ocean component without modification, but it is first passed to the sea ice component. The river component receives ground runoff water from the land component and drains riverine runoff water into the sea ice component. Lakes are dealt with by the sea ice and ocean components.