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RISComments on “Orographically Forced Planetary Waves in the Northern Hemisphere Winter: Steady State Model with Wave-Coupled Lower Boundary Formulation”
Publisher: American Meteorological Society
Abstract: We reexamine the coupled lower boundary condition of Chen and Trenberth and show that for consistency the vertical velocity should be corrected from the mountain surface to the lowest computational level. This correction ...
A Neural Network Correction to the Scalar Approximation in Radiative Transfer
Publisher: American Meteorological Society
Abstract: AbstractThe next generation of advanced high-resolution sensors in geostationary orbit will gather detailed information for studying the Earth system. There is an increasing desire to perform observing system simulation ...
On the Establishment of Stationary Waves in the Northern Hemisphere Winter
Publisher: American Meteorological Society
Abstract: The establishment of stationary waves in the Northern Hemisphere winter is investigated using stationary and time-dependent linear primitive equation models. Confirming the results of Nigam and Lindzen, we find that small ...
A Mechanism for Excitation of Ultralong Rossby Waves
Publisher: American Meteorological Society
Abstract: Ultralong Rossby waves (low zonal and meridional wavenumbers on the sphere) have been studied for many years. Extensive observational evidence tends to identify these waves with the gravest normal modes of the atmosphere. ...
Maximum-Likelihood Estimation of Forecast and Observation Error Covariance Parameters. Part I: Methodology
Publisher: American Meteorological Society
Abstract: The maximum-likelihood method for estimating observation and forecast error covariance parameters is described. The method is presented in general terms but with particular emphasis on practical aspects of implementation. ...
The Choice of Variable for Atmospheric Moisture Analysis
Publisher: American Meteorological Society
Abstract: The implications of using different control variables for the analysis of moisture observations in a global atmospheric data assimilation system are investigated. A moisture analysis based on either mixing ratio or specific ...
Using Hough Harmonics to Validate and Assess Nonlinear shallow-Water Models
Publisher: American Meteorological Society
Abstract: The implementation of a technique for locating programming errors in shallow-water codes, establishing the correctness of the code, and assessing the performance of the numerical model under various flow conditions is ...
Assimilation of Satellite Cloud Data into the GMAO Finite-Volume Data Assimilation System Using a Parameter Estimation Method. Part I: Motivation and Algorithm Description
Publisher: American Meteorological Society
Abstract: General circulation models are unable to resolve subgrid-scale moisture variability and associated cloudiness and so must parameterize grid-scale cloud properties. This typically involves various empirical assumptions and ...
A Computational Approach to Identifying Engineering Design Problems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Identifying new problems and providing solutions are necessary tasks for design engineers at early-stage product design and development. A new problem fosters innovative and inventive solutions. Hence, it is expected that ...
Using AI-Enabled Divergence and Convergence Patterns as a Quantitative Artifact in Design Education
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Design education has traditionally relied heavily on physical integration as it involves a lot of hands-on work, group critiques, and collaborative projects, but the COVID-19 pandemic has fundamentally shifted the way ...