کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6339773 | 1620374 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Atmospheric CO2, δ(O2/N2), APO and oxidative ratios from aircraft flask samples over Fyodorovskoye, Western Russia
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علم هواشناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Atmospheric CO2, δ(O2/N2), APO and oxidative ratios from aircraft flask samples over Fyodorovskoye, Western Russia Atmospheric CO2, δ(O2/N2), APO and oxidative ratios from aircraft flask samples over Fyodorovskoye, Western Russia](/preview/png/6339773.png)
چکیده انگلیسی
We present atmospheric CO2 and δ(O2/N2) from flask samples taken on board aircraft over Fyodorovskoye (56°27â²N, 32°55â²E) at heights of 3000 m and 100 m between 1998 and 2008. The long-term trends for CO2 and δ(O2/N2) are similar for both sampling heights, and also similar to observations from marine background station Mace Head (Ireland) and coastal station Lutjewad (the Netherlands). The seasonal CO2 amplitude at 100 m was almost twice as large as at 3000 m and a phase shift in the seasonality of about two weeks between both sampling heights was observed. This indicates a dominant influence on CO2 in the boundary layer from the regional biosphere which is confirmed by analysis of the δ(O2/N2) to CO2 oxidative ratio (OR). Together with simulations with the TM3 model, our data suggest that the observed OR of â1.7 ± 0.2 in the free troposphere is mainly driven by exchange processes with the ocean. Within the boundary layer an OR of â0.89 ± 0.12 was observed which supports the results of other recent studies suggesting the commonly used value of â1.1 for biospheric OR is likely too low.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Atmospheric Environment - Volume 97, November 2014, Pages 174-181
Journal: Atmospheric Environment - Volume 97, November 2014, Pages 174-181
نویسندگان
S. van der Laan, I.T. van der Laan-Luijkx, C. Rödenbeck, A. Varlagin, I. Shironya, R.E.M. Neubert, M. Ramonet, H.A.J. Meijer,