Cold winter soils enhance dissolved organic carbon concentrations in soil and stream water

Concentrations of dissolved organic carbon ([DOC]) have increased in lakes, streams and rivers across a large part of the northern hemisphere and raised an animated scientific debate about the underlying mechanisms. The lack of consensus about the role of climate in controlling the DOC trends highli...

Celý popis

Uloženo v:

Podrobná bibliografie
Vydáno v:	Geophysical research letters Ročník 37; číslo 8; s. np - n/a
Hlavní autoři:	Haei, Mahsa, Öquist, Mats G., Buffam, Ishi, Ågren, Anneli, Blomkvist, Peder, Bishop, Kevin, Ottosson Löfvenius, Mikaell, Laudon, Hjalmar
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Washington, DC Blackwell Publishing Ltd 01.04.2010 American Geophysical Union John Wiley & Sons, Inc
Témata:	Biogeochemistry Carbon Climate change Climatic conditions Cryosphere Dissolution Dissolved organic carbon Earth sciences Earth, ocean, space Environmental Sciences related to Agriculture and Land-use Exact sciences and technology Freshwater Geophysics Miljö- och naturvårdsvetenskap Moisture content Snowmelt soil frost Soil water Soils Streams Surface water Winter winter climate rivers trend-surface analysis springs streams latitude Summer concentration climate Dissolved organic carbon Dynamical climatology Climatic condition surface water Winter Northern Hemisphere gels Snow melt Spring(season) regulations Boreal lakes soils climate change
ISSN:	0094-8276, 1944-8007, 1944-8007
On-line přístup:	Získat plný text
Tagy:	Přidat tag Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!

Popis
Shrnutí:	Concentrations of dissolved organic carbon ([DOC]) have increased in lakes, streams and rivers across a large part of the northern hemisphere and raised an animated scientific debate about the underlying mechanisms. The lack of consensus about the role of climate in controlling the DOC trends highlights the need for understanding the regulation of surface water DOC. We found that longer and colder winters result in higher [DOC] in a boreal headwater stream during the subsequent snowmelt. In addition, prolonged soil frost increases the spring and summer [DOC] in the riparian soil water, which is a major contributor of stream water DOC in the studied area. We conclude that winter climatic conditions can play a substantial role in controlling stream [DOC] in ways not previously understood. These findings are especially important for northern latitude regions expected to be most affected by climate change.
Bibliografie:	ArticleID:2010GL042821 Tab-delimited Table 1. ark:/67375/WNG-NJFQJH80-C istex:6F29446D9D11A3899D3976B3E768640FC7CD544D SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 14 ObjectType-Article-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2
ISSN:	0094-8276 1944-8007 1944-8007
DOI:	10.1029/2010GL042821