Search Results - "Koivusalo, H."

Spatial resolution considerations for urban hydrological modelling by Krebs, G., Kokkonen, T., Valtanen, M., Setälä, H., Koivusalo, H.

“…•We present the high-resolution parameterization of SWMM for three urban catchments.•We discuss the high-resolution model sensitivity in the urban…”
Get full text

Flow–Vegetation–Sediment Interaction in a Cohesive Compound Channel by Västilä, K, Järvelä, J, Koivusalo, H

“…AbstractThe purpose of this study was to quantify how vegetation influences the flow and sediment processes relevant to the design and management of…”
Get full text

Possible climate change/variability and human impacts, vulnerability of drought-prone regions, water resources and capacity building for Africa by Gan, T.Y., Ito, Mari, Hülsmann, S., Qin, X, Lu, X.X., Liong, S.Y., Rutschman, P., Disse, M., Koivusalo, H.

“…This review article discusses the climate, water resources and historical droughts of Africa, drought indices, vulnerability, impact of global warming and land…”
Get full text

A high resolution application of a stormwater management model (SWMM) using genetic parameter optimization by Krebs, G., Kokkonen, T., Valtanen, M., Koivusalo, H., Setälä, H.

“…Low Impact Development (LID) tools and green infrastructure approaches have been developed and applied to mitigate the urbanization impacts on increasing…”
Get full text

Water quality changes and organic matter removal using natural bank infiltration at a boreal lake in Finland by Jylhä-Ollila, M., Laine-Kaulio, H., Niinikoski-Fusswinkel, P., Leveinen, J., Koivusalo, H.

“…Managed aquifer recharge (MAR) refers to intentional infiltration of surface water to an aquifer for facilitating natural water treatment and storage. MAR is…”
Get full text

Deriving Floodplain Topography and Vegetation Characteristics for Hydraulic Engineering Applications by Means of Terrestrial Laser Scanning by Jalonen, J, Järvelä, J, Koivusalo, H, Hyyppä, H

“…AbstractThe purpose of this study was to explore the applicability of terrestrial laser scanning (TLS) in determining floodplain ground level and vegetation…”
Get full text

Nordic hydrological frontier in the 21st century by Marttila, H., Laudon, H., Tallaksen, L. M., Jaramillo, F., Alfredsen, K., Ronkanen, A.-K., Kronvang, B., Lotsari, E., Kämäri, M., Ala-Aho, P., Nousu, J., Silander, J., Koivusalo, H., Kløve, B.

“…Abstract The 21st century has brought new challenges and opportunities and has also increased demands on the Nordic hydrological community. Our hydrological…”
Get full text

Modeling sediment transport after ditch network maintenance of a forested peatland by Haahti, K., Marttila, H., Warsta, L., Kokkonen, T., Finér, L., Koivusalo, H.

“…Elevated suspended sediment (SS) loads released from peatlands after drainage operations and the resulting negative effect on the ecological status of the…”
Get full text

Snow processes in a forest clearing and in a coniferous forest by Koivusalo, H., Kokkonen, T.

“…An energy balance approach is applied to simulate snow accumulation and melt in a forest clearing and in a coniferous forest. The study site is located in…”
Get full text

Effects of terrain slope on long-term and seasonal water balances in clayey, subsurface drained agricultural fields in high latitude conditions by Turunen, M., Warsta, L., Paasonen-Kivekäs, M., Nurminen, J., Alakukku, L., Myllys, M., Koivusalo, H.

“…•3D FLUSH supports year-round water balance simulation in undulating field area.•Most outflow from the clay fields occurred through subsurface pathways.•Slope…”
Get full text

Modeling water balance and effects of different subsurface drainage methods on water outflow components in a clayey agricultural field in boreal conditions by Turunen, M., Warsta, L., Paasonen-Kivekäs, M., Nurminen, J., Myllys, M., Alakukku, L., Äijö, H., Puustinen, M., Koivusalo, H.

“…► A 3D model (FLUSH) simulates simultaneously 4 monitored field sections. ► Groundwater outflow was a major outflow pathway and totaled 9–15% of precipitation…”
Get full text

Impacts of ditch cleaning on hydrological processes in a drained peatland forest by Koivusalo, H., Ahti, E., Laurén, A., Kokkonen, T., Karvonen, T., Nevalainen, R., Finér, L.

“…One fourth of the forests in Finland are growing on drained peatlands. Forestry operations such as ditch network maintenance increase the export of suspended…”
Get full text

Analysis of water balance and runoff generation in high latitude agricultural fields during mild and cold winters by Koivusalo, H., Turunen, M., Salo, H., Haahti, K., Nousiainen, R., Warsta, L.

“…High-latitude conditions in northern Europe are characterised by short growing seasons (May–August) and long dormant seasons. Alternating mild and freezing…”
Get full text

Depth of water table prior to ditch network maintenance is a key factor for tree growth response by Sarkkola, S, Hökkä, H, Ahti, E, Koivusalo, H, Nieminen, M

“…In boreal-drained peatland forests, tree growth is retarded by the gradual deterioration of drainage ditch networks. In order to avoid the development of…”
Get full text

Bayesian inference of uncertainties in precipitation-streamflow modeling in a snow affected catchment by Koskela, J. J., Croke, B. W. F., Koivusalo, H., Jakeman, A. J., Kokkonen, T.

“…Bayesian inference is used to study the effect of precipitation and model structural uncertainty on estimates of model parameters and confidence limits of…”
Get full text

Soil macroporosity in relation to subsurface drain location on a sloping clay field in humid climatic conditions by Alakukku, L., Nuutinen, V., Ketoja, E., Koivusalo, H., Paasonen-Kivekäs, M.

“…Macroporosity of soil and earthworm abundance in relation to the distance from subsurface drain lines were determined to investigate the effect of subsurface…”
Get full text

Simulating water balance and evapotranspiration in a subsurface drained clayey agricultural field in high-latitude conditions by Turunen, M., Warsta, L., Paasonen-Kivekäs, M., Nurminen, J., Koivusalo, H.

“…Secondary drainage impact of groundwater outflow can affect drainage design and form a pathway for nutrient loading in agricultural areas. Holistic assessment…”
Get full text

Domination of growing-season evapotranspiration over runoff makes ditch network maintenance in mature peatland forests questionable by S. Sarkkola, M. Nieminen, H. Koivusalo, A. Laurén, E. Ahti, S. Launiainen, E. Nikinmaa, H. Marttila, J. Laine, H. Hökkä

“…In Finland, ditch network maintenance (DNM) is carried out annually on 60–70,000 ha of drained peatland to promote tree growth for forestry purposes. However,…”
Get full text

Implications of Uncertainty in a Pre-treatment Dataset when Estimating Treatment Effects in Paired Catchment Studies: Phosphorus Loads from Forest Clear-cuts by Laurén, A, Heinonen, J, Koivusalo, H, Sarkkola, S, Tattari, S, Mattsson, T, Ahtiainen, M, Joensuu, S, Kokkonen, T, Finér, L

“…Estimates of increased nutrient export caused by forest clear-cuttings are mostly based on long-term paired catchment studies, where the treatment effect is…”
Get full text

Development and application of a solute transport model to describe field-scale nitrogen processes during autumn rains by Salo, H., Warsta, L., Turunen, M., Paasonen-Kivekäs, M., Nurminen, J., Koivusalo, H.

“…A new generic, three-dimensional, solute transport component was developed into FLUSH, which is a hydrological model developed for Nordic conditions. Water…”
Get full text