Acidification of East Siberian Arctic Shelf waters through addition of freshwater and terrestrial carbon; Nature Geoscience; Vol. 9, iss. 5

Bibliographic Details
Parent link:	Nature Geoscience: Peer-reviewed Scientific Journal.— , 2008- Vol. 9, iss. 5.— 2016.— [С. 361–365]
Corporate Authors:	Национальный исследовательский Томский политехнический университет Институт природных ресурсов Кафедра геологии и разведки полезных ископаемых, Национальный исследовательский Томский политехнический университет Институт природных ресурсов Кафедра геологии и разведки полезных ископаемых Международная научно-образовательная лаборатория изучения углерода арктических морей
Other Authors:	Semiletov I. P. Igor Petrovich, Pipko I. I. Irina Ivanovna, Gustafsson O. Orjan, Anderson L. Leif, Sergienko V. I. Valentin, Pugach S. P. Svetlana Petrovna, Dudarev O. V. Oleg Viktorovich, Charkin A. N. Aleksandr Nikolaevich, Gukov A. Yu. Alexander Yurjevich, Broder L. Lisa, Andersson A. August, Spivak E. Eduard, Shakhova N. E. Nataljya Evgenjevna
Summary:	Title screen Ocean acidification affects marine ecosystems and carbon cycling, and is considered a direct effect of anthropogenic carbon dioxide uptake from the atmosphere. Accumulation of atmospheric CO2 in ocean surface waters is predicted to make the ocean twice as acidic by the end of this century. The Arctic Ocean is particularly sensitive to ocean acidification because more CO2 can dissolve in cold water. Here we present observations of the chemical and physical characteristics of East Siberian Arctic Shelf waters from 1999, 2000-2005, 2008 and 2011, and find extreme aragonite undersaturation that reflects acidity levels in excess of those projected in this region for 2100. Dissolved inorganic carbon isotopic data and Markov chain Monte Carlo simulations of water sources using salinity and δ18O data suggest that the persistent acidification is driven by the degradation of terrestrial organic matter and discharge of Arctic river water with elevated CO2 concentrations, rather than by uptake of atmospheric CO2. We suggest that East Siberian Arctic Shelf waters may become more acidic if thawing permafrost leads to enhanced terrestrial organic carbon inputs and if freshwater additions continue to increase, which may affect their efficiency as a source of CO2. [References: p. 365 (61 tit.)] Режим доступа: по договору с организацией-держателем ресурса
Language:	English
Published:	2016
Subjects:	электронный ресурс труды учёных ТПУ арктический шельф подкисление углерод
Online Access:	http://dx.doi.org/10.1038/ngeo2695
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=649345