EXPER A1B DRIVER

Summary of future projection. Climate change under aggressive mitigation: Atmospheric carbon-dioxide concentrations pathways rather than carbon emissions are specified in all models, including five ESMs that contain interactive carbon cycles. Our study illustrates that the benefits of mitigation will not be realised in temperature terms until several decades after emissions reductions begin, and may vary considerably between regions. Two kinds of experiment were conducted: Print page Send to friend.

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Specified forcings also include minor greenhouse gas concentration pathways, ozone concentration, aerosols via concentrations or precursor emissions and land use change in five models. Summary of future projection. For Global Warming Projection Vol.

Met Office Hadley Centre Model Data Holdings

Pre-industrial control experiment PIcntrl The pre-industrial control experiment PIcntrl simulates climate changes using fixed forcing agents at levels from the year e. Atmospheric carbon-dioxide concentrations pathways rather than carbon emissions are specified in all models, including five ESMs that contain interactive carbon cycles. In E1 twenty-first century global warming remains below 2K in most models, but global mean precipitation changes are higher than in A1B up to and consistently higher per degree of warming.

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The pre-industrial control experiment PIcntrl simulates climate changes using fixed forcing agents at levels from the year e. The initial condition of each simulation member is taken from the different states of the PIcntrl fields at simulation years of 1, 51,and Salas y Melia, M. The forcing agents are the historical record of or estimated greenhouse gases, tropospheric sulfate aerosol, volcanoes and solar forcing. Each experiment consists of five-member ensembles of simulation.

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Two kinds of experiment were conducted: For further details of the experiments using the CGCM2. Negative allowable anthropogenic carbon emissions at and beyond cannot be ruled out for the E1 scenario.

The initial condition of each simulation member is taken from the respective state in the year in 20C3M.

The spread in global temperature and precipitation responses is partly attributable to inter-model variations in aerosol loading and representations of aerosol-related radiative forcing effects. Each member is integrated for years from to Each member is integrated, including the year period from to Resulting expef century global mean warming and precipitation changes for A1B are broadly consistent with previous studies.

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The historical experiment 20C3M simulates climate changes in the 20th century.

Print page Send to friend. It is used as reference for the following historical and scenario experiments, and also provides the initial conditions for the historical experiment.

This paper present results from q1b comprehensive models used to simulate an aggressive mitigation scenario based on detailed results of an Integrated Assessment Model. Our study illustrates that the benefits of mitigation will not be realised in temperature terms until several decades after emissions reductions begin, and may vary considerably between regions.

Home Global Warming Projection. This experiment produced continuous high-resolution simulation data for the North Pacific, enabling assessment of future climate changes in ocean areas while eliminating short-term natural climate variations through time-series analysis of NPOGCM results. Climate change under aggressive edper