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RISMountain-Wave Drag in the Stratosphere and Mesosphere Inferred from Observed Winds and a Simple Mountain-Wave Parameterization Scheme
Publisher: American Meteorological Society
Abstract: A daily analysis of mountain-wave propagation through observed, global wind, and temperature fields in January and August is presented. Winds and temperatures are obtained from the daily 18-level NMC Climate Analysis Center. ...
Breakdown of Vertically Propagating Two-Dimensional Gravity Waves Forced by Orography
Publisher: American Meteorological Society
Abstract: The propagation of orographic gravity waves into an atmosphere with exponentially decreasing density is simulated with a two-dimensional, nonlinear, time-dependent numerical model. After the stationary wave is established ...
Frequency Distribution of Daily ITCZ Patterns over the Western–Central Pacific
Publisher: American Meteorological Society
Abstract: This study attempts to explore a comprehensive and compact approach for delineating the multiscale and multivariate characteristics of the ITCZ over the western?central Pacific based on daily satellite observations of ...
Diagnosis of Tropical Biases and the MJO from Patterns in the MERRA Analysis Tendency Fields
Publisher: American Meteorological Society
Abstract: he Modern-Era Reanalysis for Research and Applications (MERRA) is realistic, including its Madden?Julian oscillation (MJO), which the underlying model [Goddard Earth Observing System, version 5 (GEOS-5)] lacks. In the MERRA ...
Analysis of Tropical Cyclone Precipitation Using an Object-Based Algorithm
Publisher: American Meteorological Society
Abstract: recently developed object identification algorithm is applied to multisensor precipitation estimates from the Tropical Rainfall Measuring Mission (TRMM 3B42) to detect and quantify the contribution of tropical cyclone ...
Wind Stress Simulations and the Equatorial Momentum Budget in an AGCM
Publisher: American Meteorological Society
Abstract: A detailed examination of the atmospheric momentum budget over the equatorial Pacific and its relation to oceanic wind stresses is undertaken using the results of a 20-yr (1979?99), forced-SST, AGCM experiment. The results ...
Virtual Field Campaigns on Deep Tropical Convection in Climate Models
Publisher: American Meteorological Society
Abstract: High-resolution time?height data over warm tropical oceans are examined, from three global atmosphere models [GFDL?s Atmosphere Model 2 (AM2), NCAR?s Community Atmosphere Model, version 3 (CAM3), and a NASA Global Modeling ...
Rain Reevaporation, Boundary Layer–Convection Interactions, and Pacific Rainfall Patterns in an AGCM
Publisher: American Meteorological Society
Abstract: Sensitivity experiments with an atmospheric general circulation model (AGCM) show that parameterized rain reevaporation has a large impact on simulated precipitation patterns in the tropical Pacific, especially on the ...
Potential Predictability of Long-Term Drought and Pluvial Conditions in the U.S. Great Plains
Publisher: American Meteorological Society
Abstract: This study examines the predictability of seasonal mean Great Plains precipitation using an ensemble of century-long atmospheric general circulation model (AGCM) simulations forced with observed sea surface temperatures ...
Global Radiative–Convective Equilibrium in the Community Atmosphere Model, Version 5
Publisher: American Meteorological Society
Abstract: n the continued effort to understand the climate system and improve its representation in atmospheric general circulation models (AGCMs), it is crucial to develop reduced-complexity frameworks to evaluate these models. ...