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RISProcesses Controlling the Seasonally Varying Emergence of Forced Arctic Longwave Radiation Changes
Publisher: American Meteorological Society
Arctic Inversion Strength in Climate Models
Publisher: American Meteorological Society
Abstract: ecent work indicates that climate models have a positive bias in the strength of the wintertime low-level temperature inversion over the high-latitude Northern Hemisphere. It has been argued this bias leads to underestimates ...
Influence of the Atlantic Meridional Overturning Circulation on the Northern Hemisphere Surface Temperature Response to Radiative Forcing
Publisher: American Meteorological Society
Abstract: ABSTRACTMany modeling studies have shown that the Atlantic meridional overturning circulation (AMOC) will weaken under increased greenhouse gas forcing, but the influence of AMOC internal variability on climate change in ...
Contributions of Clouds, Surface Albedos, and Mixed-Phase Ice Nucleation Schemes to Arctic Radiation Biases in CAM5
Publisher: American Meteorological Society
Abstract: he Arctic radiation balance is strongly affected by clouds and surface albedo. Prior work has identified Arctic cloud liquid water path (LWP) and surface radiative flux biases in the Community Atmosphere Model, version 5 ...
Sensitivity to Glacial Forcing in the CCSM4
Publisher: American Meteorological Society
Abstract: esults are presented from the Community Climate System Model, version 4 (CCSM4), simulation of the Last Glacial Maximum (LGM) from phase 5 of the Coupled Model Intercomparison Project (CMIP5) at the standard 1° resolution, ...
The Role of Clouds in Modulating Global Aerosol Direct Radiative Effects in Spaceborne Active Observations and the Community Earth System Model
Publisher: American Meteorological Society
Abstract: bservational benchmarks of global and regional aerosol direct radiative effects, over all surfaces and all sky conditions, are generated using CloudSat?s new multisensor radiative fluxes and heating rates product. Improving ...
An Ensemble Covariance Framework for Quantifying Forced Climate Variability and Its Time of Emergence
Publisher: American Meteorological Society
Abstract: AbstractClimate variability and its response to increasing greenhouse gases are important considerations for impacts and adaptation. Modeling studies commonly assess projected changes in variability in terms of changes in ...
True to Milankovitch: Glacial Inception in the New Community Climate System Model
Publisher: American Meteorological Society
Abstract: he equilibrium solution of a fully coupled general circulation model with present-day orbital forcing is compared to the solution of the same model with the orbital forcing from 115 000 years ago. The difference in snow ...
A Characterization of the Present-Day Arctic Atmosphere in CCSM4
Publisher: American Meteorological Society
Abstract: imulation of key features of the Arctic atmosphere in the Community Climate System Model, version 4 (CCSM4) is evaluated against observational and reanalysis datasets for the present-day (1981?2005). Surface air temperature, ...
DART/CAM: An Ensemble Data Assimilation System for CESM Atmospheric Models
Publisher: American Meteorological Society
Abstract: he Community Atmosphere Model (CAM) has been interfaced to the Data Assimilation Research Testbed (DART), a community facility for ensemble data assimilation. This provides a large set of data assimilation tools for climate ...