Metan- och Koldioxidutsläpp Från Tre Småskaliga Vattenkraftverk i Södra Sverige
| Autor: | Danielsen, Edevardt Johan, Jonsson Valderrama, Alexandra |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Climate Research
(automatiserade) Fluxkammare GHGs Vattenkraft Löst oorganiskt kol Temporal Other Natural Sciences Klimatforskning Diffusion Inorganic Chemistry Dissolved oxygen DO Freshwater Rumslig Reservoar Spatial Löst syre Biologiska vetenskaper Metan Variability Variabilitet Utsläpp Dissolved inorganic carbon Reservoir Annan naturvetenskap Organisk kemi Oorganisk kemi CH4 Ebullition (automated) Flux chambers GHHs Organic Chemistry Geovetenskap och miljövetenskap Koldioxid Biological Sciences Miljövetenskap Greenhouse gases Carbon dioxide Emissions CO2 Växthusgaser Earth and Related Environmental Sciences Sötvatten Methane Hydropower Environmental Sciences |
| Popis: | Over the past decades, evidence show that the anthropogenetic greenhouse gases (GHG) emissions of carbon dioxide (CO₂) and methane (CH₄) are the main drivers behind global warming and are becoming stronger. Globally, hydropower is among the main sources of renewable energy and the popular notion that hydropower electricity is carbon neutral has been under debate as evidence from measurements in different regions of the globe show significant and highly variable carbon emissions from hydropower reservoirs. But these global estimates are still highly uncertain since they are restricted to a few locations in the south of Europe, North America, and South America, and lack both the temporal and spatial variability in addition to some of the flux pathways (often downstream emission and degassing). This study assesses the CH4 and CO₂ emissions from reservoirs associated to three small hydropower stations in the south of Sweden and aims to understand potential spatial and temporal variability in the temperate region. The study performed flux measurements of CH4 and CO₂, an analysis of CH4 and DIC concentration in the water, and a depth profile of temperature, DO, CH4 and DIC at the hydropower station’s reservoirs. In summation this study finds significant CH4 and DIC concentrations, as well as CH4 and CO₂emissions from the studied reservoirs. The findings of this study underline the notion that hydropower might be a `blind spot` in the Swedish GHG budget report, and if so, the carbon emissions from hydropower electricity need to be re-evaluated. |
| Databáze: | OpenAIRE |
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