University of Oulu

L-J. Meriö, H. Marttila, B. Kløve, P. Ala-aho 2016 Changing snow conditions and vegetation patterns: Impact on boreal flow conditions. In Nordic Water 2016, XXIX Nordic Hydrological Conference, August 8-10, 2016 Kaunas, Lithuania. The role of hydrology towards water resource sustainability, abstracts http://www.lei.lt/nordicwater2016/wp-content/uploads/2016/08/abstractA5.pdf

Changing snow conditions and vegetation patterns : impact on boreal flow conditions

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Author: Meriö, Leo-Juhani1; Marttila, Hannu1; Klöve, Björn1;
Organizations: 1University of Oulu PO Box 4300, 90014 – Finland
2University of Aberdeen Elphinstone Road, Aberdeen, AB24 3UF – United Kingdom
Format: abstract
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.1 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe201702021438
Language: English
Published: Tekniska Högskolan i Stockholm. Institutionen för mark- och vattenteknik, 2016
Publish Date: 2017-02-02
Description:

Abstract

Recent climate projections and studies indicate drastic changes in snow cover extent, properties and timing in boreal areas. Snow cover duration is expected to decrease in Finland and more frequent warm spells and rainon- snow events will lead to more variable snowpack. Snowmelt acts as a major input to northern hydrology affecting soil moisture conditions, recharging groundwater and sustaining flow during the winter and early summer. Simultaneous to changing climate and snow conditions the vegetation patterns are evolving due to natural and/or anthropogenic processes. Vegetation, snow properties and the physical catchment structure together with climate conditions determine the hydrological response of the catchments. However, their co-evolution, interconnections and impact on hydrology are still not completely understood. In this study, existing long (over 30 year) and spatially well represented monitoring time series from meteorology and hydrology monitored at dozens of headwater catchments in Finland are combined with multisource data. We utilize latest calculation methods, high resolution digital elevation model and remote sensed vegetation inventory data sets. The objective is to evaluate the impact of changing environmental factors on snow cover and consequently on boreal headwater flow conditions. The evaluation will be done by determining relevant streamflow signatures for different catchments and analysing their relationships and sensitivity to catchment structure and changes in vegetation and snow cover. The results are needed for deeper understanding of the future hydrological behaviour of the boreal catchments which is necessary information for future decision making in water resources management and sustainable bioeconomy in boreal region.

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Series: Trita-LWR. Report
ISSN: 1650-8610
ISSN-L: 1650-8610
ISBN: 978-609-449-096-5
Pages: 78 - 78
Host publication: Nordic Water 2016, XXIX Nordic Hydrological Conference, August 8-10, 2016 Kaunas, Lithuania. The role of hydrology towards water resource sustainability, abstracts
Host publication editor: Povilaitis, Arvydas
Meilutyté-Lukauskienené, Diana
Field of Science: 1172 Environmental sciences
Subjects:
Copyright information: © Aleksandras Stulginskis University. Published in this repository with the kind permission of the publisher.