Search Results - "Kallio, Kari"

Contrasting seasonality in optical-biogeochemical properties of the Baltic Sea by Simis, Stefan G H, Ylöstalo, Pasi, Kallio, Kari Y, Spilling, Kristian, Kutser, Tiit

“…Optical-biogeochemical relationships of particulate and dissolved organic matter are presented in support of remote sensing of the Baltic Sea pelagic. This…”
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Applicability of Earth Observation chlorophyll-a data in assessment of water status via MERIS — With implications for the use of OLCI sensors by Attila, Jenni, Kauppila, Pirkko, Kallio, Kari Y., Alasalmi, Hanna, Keto, Vesa, Bruun, Eeva, Koponen, Sampsa

“…Earth Observation (EO) offers spatially and temporally unique data for generating information required under various environmental regulations for assessing…”
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Geographic and temporal variations in turbulent heat loss from lakes: A global analysis across 45 lakes by Woolway, R. Iestyn, Verburg, Piet, Lenters, John D., Merchant, Christopher J., Hamilton, David P., Brookes, Justin, de Eyto, Elvira, Kelly, Sean, Healey, Nathan C., Hook, Simon, Laas, Alo, Pierson, Don, Rusak, James A., Kuha, Jonna, Karjalainen, Juha, Kallio, Kari, Lepistö, Ahti, Jones, Ian D.

“…Heat fluxes at the lake surface play an integral part in determining the energy budget and thermal structure in lakes, including regulating how lakes respond…”
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Mapping lake CDOM by satellite remote sensing by Kutser, Tiit, Pierson, Donald C., Kallio, Kari Y., Reinart, Anu, Sobek, Sebastian

“…Given the importance of coloured dissolved organic matter (CDOM) for the structure and function of lake ecosystems, a method to estimate the amount of CDOM in…”
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Testing the performance of empirical remote sensing algorithms in the Baltic Sea waters with modelled and in situ reflectance data by Ligi, Martin, Kutser, Tiit, Kallio, Kari, Attila, Jenni, Koponen, Sampsa, Paavel, Birgot, Soomets, Tuuli, Reinart, Anu

“…Remote sensing studies published up to now show that the performance of empirical (band-ratio type) algorithms in different parts of the Baltic Sea is highly…”
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Participatory operations model for cost-efficient monitoring and modeling of river basins — A systematic approach by Malve, Olli, Hjerppe, Turo, Tattari, Sirkka, Väisänen, Sari, Huttunen, Inese, Kotamäki, Niina, Kallio, Kari, Taskinen, Antti, Kauppila, Pirkko

“…The worldwide economic downturn and the climate change in the beginning of 21st century have stressed the need for cost efficient and systematic operations…”
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Using Satellite Remote Sensing to Estimate the Colored Dissolved Organic Matter Absorption Coefficient in Lakes by Kutser, Tiit, Pierson, Donald C., Tranvik, Lars, Reinart, Anu, Sobek, Sebastian, Kallio, Kari

“…Given the importance of colored dissolved organic matter (CDOM) for the structure and function of lake ecosystems, a method that could estimate the amount of…”
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Detection of water quality using simulated satellite data and semi-empirical algorithms in Finland by Härmä, Pekka, Vepsäläinen, Jenni, Hannonen, Tuula, Pyhälahti, Timo, Kämäri, Juha, Kallio, Kari, Eloheimo, Karri, Koponen, Sampsa

“…The aim of the study was to test the feasibility of the band combination of the TERRA MODIS and ENVISAT MERIS instruments for operational monitoring of lakes…”
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A semi-operative approach to lake water quality retrieval from remote sensing data by Pulliainen, Jouni, Kallio, Kari, Eloheimo, Karri, Koponen, Sampsa, Servomaa, Henri, Hannonen, Tuula, Tauriainen, Simo, Hallikainen, Martti

“…A semi-operative approach to retrieve chlorophyll-a concentration from airborne/spaceborne spectrometer observations has been developed and tested using the…”
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Regional water quality mapping through the assimilation of spaceborne remote sensing data to ship-based transect observations by Pulliainen, Jouni, Vepsäläinen, Jenni, Kaitala, Seppo, Hallikainen, Martti, Kallio, Kari, Fleming, Vivi, Maunula, Petri

“…Satellite observations and surface‐observed transect data are combined to assess the spatial characteristics of water quality in the Baltic Sea, northern…”
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Temporal patterns of phytoplankton phenology across high latitude lakes unveiled by long-term time series of satellite data by Maeda, Eduardo Eiji, Lisboa, Filipe, Kaikkonen, Laura, Kallio, Kari, Koponen, Sampsa, Brotas, Vanda, Kuikka, Sakari

“…Monitoring temporal changes in phytoplankton dynamics in high latitude lakes is particularly timely for understanding the impacts of warming on aquatic…”
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Machine Learning Regression Approaches for Colored Dissolved Organic Matter (CDOM) Retrieval with S2-MSI and S3-OLCI Simulated Data by Ruescas, Ana Belen, Hieronymi, Martin, Mateo-Garcia, Gonzalo, Koponen, Sampsa, Kallio, Kari, Camps-Valls, Gustau

“…The colored dissolved organic matter (CDOM) variable is the standard measure of humic substance in waters optics. CDOM is optically characterized by its…”
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Substrate limitation of a habitat-forming genus Fucus under different water clarity scenarios in the northern Baltic Sea by Lappalainen, Juho, Virtanen, Elina A., Kallio, Kari, Junttila, Sofia, Viitasalo, Markku

“…Canopy-forming macroalgae living on rocky bottoms provide valuable ecosystem services but long-term eutrophication has narrowed their distribution and depth…”
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Absorption properties of in-water constituents and their variation among various lake types in the boreal region by Ylöstalo, Pasi, Kallio, Kari, Seppälä, Jukka

“…We studied the absorption properties of in-water constituents among 15 boreal lakes belonging to various lake types. One of the lakes was also monitored…”
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MERIS Case II water processor comparison on coastal sites of the northern Baltic Sea by Attila, Jenni, Koponen, Sampsa, Kallio, Kari, Lindfors, Antti, Kaitala, Seppo, Ylöstalo, Pasi

“…Three MERIS Case II water processors included in the BEAM software package were studied for estimating the water quality in the coastal waters of the northern…”
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Optical model for the Baltic Sea with an explicit CDOM state variable: a case study with Model ERGOM (version 1.2) by Neumann, Thomas, Koponen, Sampsa, Attila, Jenni, Brockmann, Carsten, Kallio, Kari, Kervinen, Mikko, Mazeran, Constant, Müller, Dagmar, Philipson, Petra, Thulin, Susanne, Väkevä, Sakari, Ylöstalo, Pasi

“…Colored dissolved organic matter (CDOM) in marine environments impacts primary production due to its absorption effect on the photosynthetically active…”
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Advances in combining optical citizen observations on water quality with satellite observations as part of an environmental monitoring system by Pyhalahti, Timo, Toivanen, Timo, Kallio, Kari Y., Jarvinen, Marko, Molinier, Matthieu, Koponen, Sampsa, Kotovirta, Ville, Chengyuan Peng, Anttila, Saku, Laanen, Marnix, Lindholm, Matti

“…Citizen observations, environmental data gathered by volunteers without professional observation capabilities, have been extensively used for Finnish water…”
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Assimilation of satellite data to 3D hydrodynamic model of Lake Säkylän Pyhäjärvi by Mano, Akiko, Malve, Olli, Koponen, Sampsa, Kallio, Kari, Taskinen, Antti, Ropponen, Janne, Juntunen, Janne, Liukko, Ninni

“…To analyze the applicability of direct insertion of total suspended matter (TSM) concentration field based on turbidity derived from satellite data to…”
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Lake water quality classification with airborne hyperspectral spectrometer and simulated MERIS data by Koponen, Sampsa, Pulliainen, Jouni, Kallio, Kari, Hallikainen, Martti

“…We study the use of airborne and simulated satellite remote sensing data for classification of three water quality variables: Secchi depth, turbidity, and…”
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Assimilation of satellite data to 3D hydrodynamic model of Lake Saekylaen Pyhaejaervi by Mano, Akiko, Malve, Olli, Koponen, Sampsa, Kallio, Kari, Taskinen, Antti, Ropponen, Janne, Juntunen, Janne, Liukko, Ninni

“…To analyze the applicability of direct insertion of total suspended matter (TSM) concentration field based on turbidity derived from satellite data to…”
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