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Importance of Stream Temperature to Climate Change Impact on Water Quality : Volume 12, Issue 3 (23/05/2008)

By Ducharne, A.

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Book Id: WPLBN0003973191
Format Type: PDF Article :
File Size: Pages 14
Reproduction Date: 2015

Title: Importance of Stream Temperature to Climate Change Impact on Water Quality : Volume 12, Issue 3 (23/05/2008)  
Author: Ducharne, A.
Volume: Vol. 12, Issue 3
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2008
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Ducharne, A. (2008). Importance of Stream Temperature to Climate Change Impact on Water Quality : Volume 12, Issue 3 (23/05/2008). Retrieved from http://hawaiilibrary.net/


Description
Description: Laboratoire Sisyphe, CNRS/Université Pierre et Marie Curie, Paris, France. The sensitivity of some aspects of water quality to climate change was assessed in the Seine River (France) with the biogeochemical model RIVERSTRAHLER, which describes the transformations and fluxes of C, N, P and Si between the main microbiological populations, the water column and the sediment, along the entire river network. Point and diffuse sources are prescribed, stream temperature undergoes a sinusoidal annual cycle constrained by observations, and runoff is calculated by a physically-based land surface model. The reference simulation, using meteorological forcing of 1986–1990 and point sources of 1991, compares very well with observations. The climate change simulated by a general circulation model under the SRES emission scenario A2 was used to simulate the related changes in runoff and stream temperature. To this end, a statistical analysis was undertaken of the relationships between the water and air temperatures in the Seine watershed over 1993–1999, using 88 points that correctly sampled the variability of the tributaries. Most of stream temperature variance was explained by the lagged moving average of air temperature, with parameters that depended on Strahler stream order. As an interesting simplification, stream temperature changes could be approximated by air temperature changes. This modelling framework was used to analyse of the relative influence of the water warming and discharge reduction induced by climate change on biogeochemical water quality in Paris and downstream. Discharge reduction increased phytoplankton growth and oxygen deficits. Water warming decreased dissolved oxygen, increased phytoplankton biomass during the growth period, and reduced it afterwards, when loss factors dominate. It was also shown that these impacts were enhanced when point source inputs of nutrient and organic carbon increased.

Summary
Importance of stream temperature to climate change impact on water quality

Excerpt
EEA: Corine Land Cover (CLC90), European Environment Agency, http://dataservice.eea.europa.eu/dataservice/metadetails.asp?id=188, 1996.; AESN: Les bassins de la Seine et des cours d'eau normands – Hydrologie générale et conclusions, Tome 1, Fascicule 6, Agence de l'Eau Seine-Normandie, Nanterre, 1976.; Arnell, N. W., Liu, C., Compagnucci, R., da Cunha, L., Hanaki, K., Howe, C., Mailu, G., Shiklomanov, I., and Stakhiv, E.: Hydrology and water resources, in: Climate Change 2001: Impacts, Adaptation, and Vulnerability, edited by: McCarthy, J. J., Canziani, O., Leary, N. A., Dokken, D. J., and White, K. S., Contribution of Working Group II to the Third Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, 191–233, 2001.; Beven, K.,and Kirkby, M. J.: A physically based variable contributing area model of basin hydrology, Hydrol. Sci. Bull., 24, 43–69, 1979.; Billen, G., Garnier, J., and Hanset, P.: Modelling phytoplankton development in whole drainage networks: The RIVERSTRAHLER model applied to the Seine River system, Hydrobiol., 289, 119–137, 1994.; Billen, G., Garnier, J., Ficht, A., and Cun, C.: Modelling the response of water quality in the Seine Estuary to human activity in its watershed over the last 50 years, Estuaries, 24, 977–993, 2001.; Billen, G., Garnier, J., Mouchel, J. M., and Silvetsre, M.: The Seine system: Introduction to a multidisciplinary approach of the functioning of a regional river system, Science of The Total Environment, 375, 1–12, doi:10.1016/j.scitotenv.2006.12.001, 2007.; Caissie, D., El-Jabi, N., and St-Hilaire, A.: Stochastic modelling of water temperatures in a small stream using air to water relations, Can. J. Civ. Eng., 25, 250–260, 1998.; Daufresne, M. and Boet, P.: Climate change impacts on structure and diversity of fish communities in rivers, Global Change Biol., 13, 2467–2478, doi:10.1111/j.1365-2486.2007.01449.x, 2007.; Ducharne, A., Koster, R. D., Suarez, M., Stieglitz, M., and Kumar P.: A catchment-based approach to modeling land surface processes in a GCM – Part 2: Parameter estimation and model demonstration, J. Geophys. Res., 105(D20), 24 823–24 838, 2000.; Ducharne, A., Golaz, C., Leblois, E., Laval, K., Polcher, J., Ledoux, E., and de Marsily, G.: Development of a high resolution runoff routing model, calibration and application to assess runoff from the LMD GCM, J. Hydrol., 280, 207–228, 2003.; Ducharne, A., Baubion, C., Beaudoin, N., Benoit, M., Billen, G., Brisson, N., Garnier, J., Kieken, H., Lebonvallet, S., Ledoux, E., Mary, B., Mignolet, C., Poux, X., Sauboua, E., Schott, C., Théry, S., and Viennot, P.: Long term prospective of the Seine River system: Confronting climatic and direct anthropogenic changes, Sci. Total Environ., 375, 292–311, doi:10.1016/j.scitotenv.2006.12.011, 2007.; Eaton, J. G. and Scheller, R. M.: Effects of Climate Warming on Fish Thermal Habitat in Streams of the United States, Limnol. Oceanogr., 41(5), 1109–1115, 1996.; Durand, Y., Brun, E., Merindol, L., Guyomarc'h, G., Lesaffre, B., and Martin, E.: A meteorological estimation of relevant parameters for snow models, Ann. Glaciol., 18, 65–71, 1993.; Erickson, T. R. and Stefan, H. G.: Linear air/water temperature correlations for streams during open water periods, J. Hydrol. Eng., American Society of Civil Engineers, 5, 317–321, 2000.; Garnier, J., Billen, G., and Coste, M.: Seasonal succession of Diatoms and Chlorophycae in the drainage network of the River Seine : Observations and modelling, Limnol. Oceanogr., 40, 750–765, 1995.; Garnier, J., Billen, G., Palfner, L.: Understanding the oxygen budget and related ecological processes in the river Mosel: the RIVERSTRAHLER approach, Hydrobiol., 410, 151–166, 1999.; Gibelin, A. L. and Déqué, M.: Anthropogenic climate change over the Mediterr

 

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