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RISThe North Atlantic Oscillation–Arctic Oscillation in the CCSM2 and Its Influence on Arctic Climate Variability
Publisher: American Meteorological Society
Abstract: Recent observations suggest that large and widespread changes are occurring in the Arctic climate system. Many of these are associated with the North Atlantic Oscillation (NAO) or the closely related Arctic Oscillation ...
Sea Ice Summer Camp: Bringing together sea ice modelers and observers to advance polar science
Publisher: American Meteorological Society
Abstract: rctic sea ice has undergone significant change with large reductions in thickness and areal extent over the historical record. Numerical models project sea ice loss to continue for the foreseeable future, with the possibility ...
Mechanisms of Decadal Arctic Climate Variability in the Community Climate System Model, Version 2 (CCSM2)
Publisher: American Meteorological Society
Abstract: Several mechanisms have been proposed to explain natural climate variability in the Arctic. These include processes related to the influence of the North Atlantic Oscillation/Arctic Oscillation (NAO/AO), anticyclonic/cyclonic ...
The Role of Physical Processes in Determining the Interdecadal Variability of Central Arctic Sea Ice
Publisher: American Meteorological Society
Abstract: The importance of the Arctic region for global climate change has recently been highlighted in the results from general circulation model simulations under increasing atmospheric CO2 scenarios. The warming that is predicted ...
Antarctic Sea Ice Climatology, Variability, and Late Twentieth-Century Change in CCSM4
Publisher: American Meteorological Society
Abstract: preindustrial control run and an ensemble of twentieth-century integrations of the Community Climate System Model, version 4 (CCSM4), are evaluated for Antarctic sea ice climatology, modes of variability, trends, and ...
Mechanisms Forcing an Antarctic Dipole in Simulated Sea Ice and Surface Ocean Conditions
Publisher: American Meteorological Society
Abstract: The mechanisms forcing variability in Southern Ocean sea ice and sea surface temperature from 600 years of a control climate coupled model integration are discussed. As in the observations, the leading mode of simulated ...
Simulated Arctic Ocean Freshwater Budgets in the Twentieth and Twenty-First Centuries
Publisher: American Meteorological Society
Abstract: The Arctic Ocean freshwater budgets in climate model integrations of the twentieth and twenty-first century are examined. An ensemble of six members of the Community Climate System Model version 3 (CCSM3) is used for the ...
Changing Seasonal Predictability of Arctic Summer Sea Ice Area in a Warming Climate
Publisher: American Meteorological Society
Abstract: AbstractWe use a large ensemble set of simulations and initialized model forecasts to assess changes in the initial-value seasonal predictability of summer Arctic sea ice area from the late-twentieth to the mid-twenty-first ...
Twenty-First-Century Arctic Climate Change in CCSM4
Publisher: American Meteorological Society
Abstract: he authors summarize the twenty-first-century Arctic climate simulated by NCAR?s Community Climate System Model, version 4 (CCSM4). Under a strong radiative forcing scenario, the model simulates a much warmer, wetter, ...
Improved Sea Ice Shortwave Radiation Physics in CCSM4: The Impact of Melt Ponds and Aerosols on Arctic Sea Ice
Publisher: American Meteorological Society
Abstract: he Community Climate System Model, version 4 has revisions across all components. For sea ice, the most notable improvements are the incorporation of a new shortwave radiative transfer scheme and the capabilities that this ...