A Numerical Solution to the Equations of Tropospheric Chemistry Based on an Analysis of Production and Loss of Odd Hydrogen

P.I.将测试和评估一种旨在缩短计算时间的数值方案，最终产品可能适用于包括光化学在内的大规模全球模型以及其他3D模型。PI计划开发一种数值方法来求解光化学生产和损失方程。所提出的程序的显著特点是根据奇数氢的产生项和损失项推导出OH的迭代解。初步结果表明，与隐式求解方法相比，新方法所需的计算时间减少了五分之一。

The P.I. will test and evaluate a numerical scheme designed to cut computational time, with the end product potentially being applicable to large scale global models that include photochemistry as well as other 3-D models. The PI plans to develop a numerical method for solving the equations of photochemical production and loss. The distinctive feature of the proposed procedure is the derivation of an iterative solution for OH based on production and loss terms for odd hydrogen. Initial results suggest that the new procedure requires five times less computation time compared to implicit solution procedures.