Improving the numerical stability of the MAGIC model

MAGIC is one of the most widely used models for forecastinglong-term acidification. The model's code, however, has been experiencing numerical instability, though this might not be widely known to the public users. The major instability comes from the analytical solution to two cubic equations for calculating SO42-concentration and the exchangeable fraction of Al on the soils. The mathematical algorithm for calculating the concentration of SO42- from a quadratic equation is also found instable. This paper is aimed at improving the instability above through proved numericalalgorithms.

作 者： DENG Yi-xiang CHEN Ji-ning HU Xue-tao   作者單位： Department of Environment Sciences and Engineering,Tsinghua University,  刊 名： 環(huán)境科學(xué)學(xué)報(bào)(英文版)  ISTIC SCI 英文刊名： ENVIRON MENTAL SCIENCES  年，卷(期)： 2001 13(2)  分類(lèi)號(hào)： X52 X0242  關(guān)鍵詞：  

【Improving the numerical stability of】相關(guān)文章：

Coupled Numerical Analysis of the Stability Behaviour of Unsaturated Soil Slopes Under Rainfall Conditions04-27

Strategies for Improving Sentence Clarity05-04

Improving Communicative Ability Via Internet05-04

Environmental Effects on Microstructural Stability of SiC/SiC Composites04-26

NUMERICAL EXPERIMENTS ON THE IMPACTS OF SEA SPRAY ON TROPICAL CYCLONES04-27

OH radicals generated by DC corona discharge for improving the pulsed discharge desulfuration efficiency04-26

Numerical Approximation of a Reaction-Diffusion System with Fast Reversible Reaction04-26

Numerical model of flow and pollutant transportation in non-orthogonal curvilinear coordinates04-26

Index system for assessing ecological stability of circular economy industrial chain of electronic industry and its empi04-26

EXPERIMENTS ON ASSIMILATION OF INITIAL VALUES IN NUMERICAL PREDICTION OF A WARM-SECTOR PRECIPITATION IN SOUTH CHINA04-27