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  Information - HS17 "Catchment hydrology - scale-integrated monitoring, process heterogeneity and steps towards a unifying catchment theory".

Event Information
A wealth of field investigations have shown that climate and landscape heterogeneities determine the spatial and temporal variability of the dominant processes that characterise the hydrological functioning of different hydro-climatological regions of the world. However, our understanding of process heterogeneity is poorly contextualised at a number of levels. For example, it is not clearly understood how the influence of climate and landscape heterogeneities interact to influence hydrological functioning of catchments at scales ranging from small experimental watersheds (ca 1km2) to mesoscale (10-100km2) or large (>1000km2) river basins. Moreover, the relative importance of different climatic and landscape controls in different geographical regions are rarely understood in any detail.
As part of the International Association of Hydrological Sciences (IAHS) Prediction in Ungauged Basins (PUB) initiative, a major goal is to provide a more systematic understanding of how we conceptualize process heterogeneity (theme 2 in PUB science plan). This requires experimental hydrologists to develop new tools to extrapolate process understanding across a range of scales to provide an adequate process-based conceptual framework for hydrological modelling. It also requires that hydrological modellers develop models that incorporate realistic, yet practical process representation relevant to the modelling objectives through dialogue with experimentalists. This session with focus on this important theme within PUB. Contributions are welcome from field and modelling studies in a range of different environments and at a range of spatial and temporal scales that attempt to understand and conceptualise in a systematic manner the influence of climatic and landscape heterogeneities in determining catchment hydrological response. Studies that integrate both field and modelling components are particularly encouraged.

Preliminary List of Solicited Speakers
Guenter Bloeschl, Technical University of Vienna
Mike Kirkby, University of Leeds
Siva Silvapalan,
Doerthe Tetzlaff, University of Aberdeen
Markus Weiler, University of British Columbia


General Statement
The information contained hereafter has been compiled and uploaded by the Session Organizers via the "Organizer Session Form". The Session Organizers have therefore the sole responsibility that this information is true and accurate at the date of publication, and the conference organizer cannot accept any legal responsibility for any errors or omissions that may be made, and he makes no warranty, expressed or implied, with regard to the material published.

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