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RISImpact of Changes in Climate and Halocarbons on Recent Lower Stratosphere Ozone and Temperature Trends
Publisher: American Meteorological Society
Abstract: The primary focus of this paper is the analysis of the roles of long-term increases in carbon dioxide (CO2) and sea surface temperatures (used as indicators of climate change) and man-made halocarbons (indicators of chemical ...
Cross-Tropopause Mass Exchange and Potential Vorticity Budget in a Simulated Tropopause Folding
Publisher: American Meteorological Society
Abstract: To study stratosphere?troposphere exchange, an approach based on the nonconservation of potential vorticity (PV) is developed; this approach arises naturally if one defines the tropopause in terms of PV. The evolution of ...
Changes in Stratospheric Temperatures and Their Implications for Changes in the Brewer–Dobson Circulation, 1979–2005
Publisher: American Meteorological Society
Abstract: easonally and vertically resolved changes in the strength of the Brewer?Dobson circulation (BDC) were inferred using temperatures measured by the Microwave Sounding Unit (MSU), Stratospheric Sounding Unit (SSU), and ...
Interannual Tropospheric Aerosol Variability in the Late Twentieth Century and Its Impact on Tropical Atlantic and West African Climate by Direct and Semidirect Effects
Publisher: American Meteorological Society
Abstract: new high-resolution global tropospheric aerosol dataset with monthly resolution is generated using version 4 of the Community Atmosphere Model (CAM4) coupled to a bulk aerosol model and forced with recent estimates of ...
The Seasonal Cycle and Interannual Variability in Stratospheric Temperatures and Links to the Brewer–Dobson Circulation: An Analysis of MSU and SSU Data
Publisher: American Meteorological Society
Abstract: revious studies have shown that lower-stratosphere temperatures display a near-perfect cancellation between tropical and extratropical latitudes on both annual and interannual time scales. The out-of-phase relationship ...
Nitrogen Availability Reduces CMIP5 Projections of Twenty-First-Century Land Carbon Uptake
Publisher: American Meteorological Society
Abstract: oupled carbon cycle?climate models in the Coupled Model Intercomparison Project, phase 5 (CMIP5), Earth system model ensemble simulate the effects of changes in anthropogenic fossil-fuel emissions and ensuing climatic ...
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 ...
Climate Change from 1850 to 2005 Simulated in CESM1(WACCM)
Publisher: American Meteorological Society
Abstract: he NCAR Community Earth System Model (CESM) now includes an atmospheric component that extends in altitude to the lower thermosphere. This atmospheric model, known as the Whole Atmosphere Community Climate Model (WACCM), ...
Persistent Ocean Anomalies as a Response to Northern Hemisphere Heating Induced by Biomass Burning Variability
Publisher: American Meteorological Society
Climate System Response to External Forcings and Climate Change Projections in CCSM4
Publisher: American Meteorological Society
Abstract: esults are presented from experiments performed with the Community Climate System Model, version 4 (CCSM4) for the Coupled Model Intercomparison Project phase 5 (CMIP5). These include multiple ensemble members of ...