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The creation of a model for calculating and analyzing small gases is an urgent task in modern science and practice. The proposed model for calculating the concentration of tropospheric gases makes it possible to calculate the change in the values of seven chemical elements depending on the initial value of nitrogen oxide, nitrogen dioxide and carbon monoxide. The results of the comparative analysis show that the proposed model of tropospheric chemistry with the initial data, reaction rate constants and values of the drop and loss, basically, adequately describes the photochemical processes occurring in the near-surface urban (Tashkent) layer.

The performed quantitative estimates of the accuracy of the model in comparison with the observed data showed, within the acceptable error, that the values of ozone and carbon monoxide calculated by the model do not coincide in percentage relative to the absolute values by 7.1% and 2%. In the future, it is necessary, on the basis of numerical experiments, for example, by iteration methods, to optimize the coefficients for small gases, which are of anthropogenic nature.

  • Read count 237
  • Date of publication 26-02-2022
  • Main LanguageIngliz
  • Pages84-89
English

The creation of a model for calculating and analyzing small gases is an urgent task in modern science and practice. The proposed model for calculating the concentration of tropospheric gases makes it possible to calculate the change in the values of seven chemical elements depending on the initial value of nitrogen oxide, nitrogen dioxide and carbon monoxide. The results of the comparative analysis show that the proposed model of tropospheric chemistry with the initial data, reaction rate constants and values of the drop and loss, basically, adequately describes the photochemical processes occurring in the near-surface urban (Tashkent) layer.

The performed quantitative estimates of the accuracy of the model in comparison with the observed data showed, within the acceptable error, that the values of ozone and carbon monoxide calculated by the model do not coincide in percentage relative to the absolute values by 7.1% and 2%. In the future, it is necessary, on the basis of numerical experiments, for example, by iteration methods, to optimize the coefficients for small gases, which are of anthropogenic nature.

Русский

Создание модели для расчѐта и анализа малых газов является актуальной задачей в современной науке и практике. Предлагаемая модель для расчѐта концентрации тропосферных газов дает возможность рассчитывать изменение значений семи химических элементов в зависимости от начального значения оксида азота, диоксида азота и оксида углерода. Результаты сравнительного анализа показывают, что предложенная модель химии тропосферы с исходными данными, константами скорости реакции и значениями перепада и потерь, в основном, адекватно описывает фотохимические процессы, происходящие в приповерхностном городском (Ташкент) слое.
Выполненные количественные оценки точности работы модели в сравнении с наблюдѐнными данными показали в пределах допустимой ошибки, что значения озона и окиси углерода, рассчитанные по модели, не совпадают в процентах относительно абсолютных значений на 7,1% и 2%. В дальнейшем необходимо на основании численных экспериментов, например, методами итераций, выполнить оптимизацию коэффициентов для малых газов, имеющие антропогенную природу.

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