![Inter-annual variation in atmospheric @D^1^4C over the Northern Indian Ocean [An article from: Atmospheric Environment]](https://www.ebooknetworking.net/books/B00/0P6/bigB000P6NXQW.jpg)
Inter-annual variation in atmospheric @D^1^4C over the Northern Indian Ocean [An article from: Atmospheric Environment]
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This digital document is a journal article from Atmospheric Environment, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Radiocarbon (^1^4C) in atmospheric CO"2 over the Northern Indian Ocean was measured between 1993 and 2001, by collecting remote maritime air from ship cruises. The @D^1^4C of atmospheric CO"2 over this region decreased from 120+/-3%% in 1993 to 85+/-2%% in 2001, consistent with the global exponential decreasing trend. The @D^1^4C values measured in spring of 2001 over the Bay of Bengal and the Arabian Sea were 86+/-2%% and 85+/-3%%, respectively, thus indistinguishable within error limits. Significant inter-annual variations in @D^1^4C were observed over this region. Input of ^1^4C-free fossil fuel CO"2 from the South Asian continent significantly influence springtime @D^1^4C values over the Northern Indian Ocean, through transport by meridional atmospheric circulation. Additional variations are possibly caused by enhanced inputs of ^1^4C-rich biogenic CO"2, during El Nino/Southern Oscillation events.
Description:
Radiocarbon (^1^4C) in atmospheric CO"2 over the Northern Indian Ocean was measured between 1993 and 2001, by collecting remote maritime air from ship cruises. The @D^1^4C of atmospheric CO"2 over this region decreased from 120+/-3%% in 1993 to 85+/-2%% in 2001, consistent with the global exponential decreasing trend. The @D^1^4C values measured in spring of 2001 over the Bay of Bengal and the Arabian Sea were 86+/-2%% and 85+/-3%%, respectively, thus indistinguishable within error limits. Significant inter-annual variations in @D^1^4C were observed over this region. Input of ^1^4C-free fossil fuel CO"2 from the South Asian continent significantly influence springtime @D^1^4C values over the Northern Indian Ocean, through transport by meridional atmospheric circulation. Additional variations are possibly caused by enhanced inputs of ^1^4C-rich biogenic CO"2, during El Nino/Southern Oscillation events.
