Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
We study the changes in the growth rate of atmospheric HCFC-22 (CHClF2, or chlorodifluoromethane) total column (TC) in the vicinity of St. Petersburg, Russia (60 degrees N). Although HCFC-22 surface concentrations at the two nearest sites of the Halocarbons and other Atmospheric Trace Species group (HATS) (53.3 degrees N and 71.3 degrees N) and mean HCFC-22 mixing ratios in the upper troposphere measured by the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE FTS) in the latitude range of 55-65 degrees N continue to increase, their growth rate is slowing down, especially in the last three years. Analysis of the temporal variability of HCFC-22 TCs measured at the St. Petersburg site of Network for the Detection of Atmospheric Composition Change (NDACC) shows that its total atmospheric abundancy reached a maximum in 2016-2017 and is currently decreasing. Thus, the measurements in the atmosphere above St. Petersburg have detected a local decrease of the HCFC-22 content, which demonstrates the effectiveness of restrictions on the production of HCFC-22.
Язык оригинала | английский |
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Страницы (с-по) | 4365–4371 |
Число страниц | 7 |
Журнал | International Joural of Remote Sensing |
Том | 41 |
Номер выпуска | 11 |
Дата раннего онлайн-доступа | 5 фев 2020 |
DOI | |
Состояние | Опубликовано - 2 июн 2020 |
ID: 51560251