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Updated: May 16, 2025

Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm
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开发MPAS-CMAQ合系统 (V1.0) 用于全球多尺度空气质量建模

David C Wong1,2, Jeff Willison1, Jonathan E Pleim1

  • 1Office of Research and Development, U.S. Environmental Protection Agency, Durham, NC, USA.

Geoscientific model development
|April 3, 2025
PubMed
概括

全球新的MPAS-CMAQ模型结合了大气和空气质量模拟. 它显示了对臭氧和PM2.5的良好的可扩展性和合理的性能,夏季臭氧偏差有所改善.

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Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving01:29

Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving

Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
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Mechanistic Models: Compartment Models in Individual and Population Analysis01:23

Mechanistic Models: Compartment Models in Individual and Population Analysis

Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least...
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