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RISCauses of Extreme Ridges That Induce California Droughts
Publisher: American Meteorological Society
Abstract: AbstractCalifornia droughts are often caused by high-amplitude and persistent ridges near and off the west coast of North America without apparent connections with ENSO. Here with a hierarchy of climate models, it is ...
Tropospheric Waveguide Teleconnections and Their Seasonality
Publisher: American Meteorological Society
Abstract: ne-point correlation maps of the subseasonal variability of 200-hPa meridional wind in nature and an atmospheric general circulation model are systematically analyzed to quantify the impact of the climatological-mean jets ...
Two Limits of Initial-Value Decadal Predictability in a CGCM
Publisher: American Meteorological Society
Abstract: When the climate system experiences time-dependent external forcing (e.g., from increases in greenhouse gas and aerosol concentrations), there are two inherent limits on the gain in skill of decadal climate predictions ...
Is AMOC More Predictable than North Atlantic Heat Content?
Publisher: American Meteorological Society
Abstract: redictability properties of the Atlantic meridional overturning circulation (AMOC) are measured and compared to those of the upper-500-m heat content in the North Atlantic based on control simulations from nine comprehensive ...
A Zonal Wavenumber 3 Pattern of Northern Hemisphere Wintertime Planetary Wave Variability at High Latitudes
Publisher: American Meteorological Society
Abstract: prominent pattern of variability of the Northern Hemisphere wintertime tropospheric planetary waves, referred to here as the Wave3 pattern, is identified from the NCEP?NCAR reanalysis. It is worthy of attention because its ...
Interannual Variations of the Boreal Summer Intraseasonal Oscillation in the Asian–Pacific Region
Publisher: American Meteorological Society
Abstract: A finite-domain wavenumber?frequency analysis was proposed to objectively measure the interannual variability of the boreal summer intraseasonal oscillation (ISO) in the Asian?Pacific region. The strongest interannual ...
Predictability of the Atlantic Overturning Circulation and Associated Surface Patterns in Two CCSM3 Climate Change Ensemble Experiments
Publisher: American Meteorological Society
Abstract: redictability of the Atlantic meridional overturning circulation (AMOC) and associated oceanic and atmospheric fields on decadal time scales in the Community Climate System Model, version 3 (CCSM3) at T42 resolution is ...
A Decadal Prediction Case Study: Late Twentieth-Century North Atlantic Ocean Heat Content
Publisher: American Meteorological Society
Abstract: n ensemble of initialized decadal prediction (DP) experiments using the Community Climate System Model, version 4 (CCSM4) shows considerable skill at forecasting changes in North Atlantic upper-ocean heat content and surface ...
Circumglobal Response to Prescribed Soil Moisture over North America
Publisher: American Meteorological Society
Abstract: AbstractA series of idealized prescribed soil moisture experiments is performed with the atmosphere/land stand-alone configuration of the Community Earth System Model, version 1, in an effort to find sources of predictability ...
Global Warming Pattern Formation: Sea Surface Temperature and Rainfall
Publisher: American Meteorological Society
Abstract: Spatial variations in sea surface temperature (SST) and rainfall changes over the tropics are investigated based on ensemble simulations for the first half of the twenty-first century under the greenhouse gas (GHG) emission ...