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RISThe Influence of the Basic State on the Northern Hemisphere Circulation Response to Climate Change
Publisher: American Meteorological Society
Abstract: Employing a comprehensive atmospheric general circulation model, the authors have shown in a previous study that the time-mean Northern Hemisphere (NH) winter circulation response to a CO2 doubling perturbation depends ...
Compensation between Resolved Wave Driving and Parameterized Orographic Gravity Wave Driving of the Brewer–Dobson Circulation and Its Response to Climate Change
Publisher: American Meteorological Society
Abstract: ollowing recent findings, the interaction between resolved (Rossby) wave drag and parameterized orographic gravity wave drag (OGWD) is investigated, in terms of their driving of the Brewer?Dobson circulation (BDC), in a ...
The Antarctic Sea Ice Response to the Ozone Hole in Climate Models
Publisher: American Meteorological Society
Abstract: t has been suggested that the increase of Southern Hemisphere sea ice extent since the 1970s can be explained by ozone depletion in the Southern Hemisphere stratosphere. In a previous study, the authors have shown that in ...
Improved Seasonal Forecast Skill of Pan-Arctic and Regional Sea Ice Extent in CanSIPS Version 2
Publisher: American Meteorological Society
Temperature, Relative Humidity, and Divergence Response to High Rainfall Events in the Tropics: Observations and Models
Publisher: American Meteorological Society
Abstract: Radiosonde measurements and Tropical Rainfall Measuring Mission (TRMM) 3B42 rainfall are used to construct composite anomaly patterns of temperature, relative humidity, and divergence about high rainfall events in the ...
Dynamics of the Lower Stratospheric Circulation Response to ENSO
Publisher: American Meteorological Society
Abstract: robust feature of the observed response to El Niño?Southern Oscillation (ENSO) is an altered circulation in the lower stratosphere. When sea surface temperatures (SSTs) in the tropical Pacific are warmer there is enhanced ...
Development and Calibration of Seasonal Probabilistic Forecasts of Ice-Free Dates and Freeze-Up Dates
Publisher: American Meteorological Society
Sensitivity of Simulated Climate to Conservation of Momentum in Gravity Wave Drag Parameterization
Publisher: American Meteorological Society
Abstract: The Canadian Middle Atmosphere Model is used to examine the sensitivity of simulated climate to conservation of momentum in gravity wave drag parameterization. Momentum conservation requires that the parameterized gravity ...
Anthropogenic aerosols dominate forced multidecadal Sahel precipitation change through distinct atmospheric and oceanic drivers.
Publisher: American Meteorological Society
Abstract: Sahel precipitation has undergone substantial multidecadal-timescale changes during the 20th century which have had severe impacts on the region’s population. Using initial condition Large Ensembles (LE) of coupled general ...
Separating the Dynamical Effects of Climate Change and Ozone Depletion. Part II: Southern Hemisphere Troposphere
Publisher: American Meteorological Society
Abstract: The separate effects of ozone depleting substances (ODSs) and greenhouse gases (GHGs) on forcing circulation changes in the Southern Hemisphere extratropical troposphere are investigated using a version of the Canadian ...