Search results for "climate"

Collapse and recovery of European smelt (Osmerus eperlanus) population in a small boreal lake - an early warning of the consequences of the climate c…

2012

Influenza del cambiamento climatico e dell’urbanizzazione sull’idrologia dei bacini idrografici

2019

I cambiamenti climatici e il fenomeno del consumo del suolo sono senz’altro i fattori che più influenzano la risposta idrologica di un bacino sia in contesti urbani che extraurbani. L’aumento del grado di urbanizzazione dei bacini naturali, inteso come aumento della frazione impermeabile del suolo derivante della costante copertura di aree del bacino con materiali impermeabili artificiali come asfalto e cemento, è un fenomeno in costante crescita a livello globale. A tali cambiamenti si sovrappongono i cambiamenti climatici in atto che, fra gli effetti principali, tendono a modificare la quantità e la modalità con cui le piogge arrivano al suolo e, al contempo, inducono alterazioni al regim…

Original data for article: Present environmental fluctuations drive species’ competitive success in experimental invasions

2020

Climate change is presumed to increase both the number and frequency of fluctuations in environmental conditions. Fluctuations can affect the ecological and evolutionary processes that make species more successful competitors against other species. For example, fluctuating conditions can create selection pressures for traits that are profitable in adaptation to fast climate change. On an ecological timescale, environmental fluctuations can facilitate species competitive success by causing reductions in other species’ population sizes. Climate change could then enhance species invasions into new areas if fluctuation-adapted invaders displace their native competitors in chancing environments.…

The emission reduction potentials of First Generation Electric Aircraft (FGEA) in Finland

2020

Under the looming climate crisis, aviation needs to find new solutions to cut its greenhouse gas emissions. One pathway towards zero emissions is the use of electric aircraft. While current battery technology will not allow for medium and long-haul flights at full capacity, on short-haul routes First Generation Electric Aircraft (FGEA) could play a significant role in the near future. Current FGEA under development could carry 9–19 passengers on distances of 400–1046 km by 2025. This study focuses on the emissions reduction potentials of FGEA in Finland. It compares the carbon dioxide equivalent (CO2-eq) emissions and real travel times (RTT) from door-to-door of FGEA on 47 routes with exist…

Assessing the hydrological changes due to land use alterations

2016

The increase of urbanized areas and, consequently, of the impervious surfaces in land-use distributions may have important implications on the basin hydrological response. As a direct impact, the increase of cemented areas reduces the available storage volume for water in the watershed, which in turn exacerbates the runoff generation. Additionally, drainage pathways can be altered and the travel time to the watershed outlet considerably speeded up, with impacts on the hydrograph characteristics. The complex interactions among different hydrological processes make the estimations of the hydrological changes highly non linear. The aim of this work is using an advanced physically-based and dis…

L'architettura ed il pianeta malato

2023

Global warming and building activity are strictly tied.This should lead architects to reconsider their design attitudes. Yet this does not happen if not as mere technologal answer. The reasons for this inadequacy fall within an ample process tht dates back to Cartesio and that has been delineated by Husserl and existantialist thinkers. The problematic and meaningful contribution by Paolo Soleri and the Metabolists are analyzed to understand the reasons of the complex relation between scientism, technology and environmentalism.

Temperature, phosphorus and species composition will all influence phytoplankton production and content of polyunsaturated fatty acids

2023

Temperature increases driven by climate change are expected to decrease the availability of polyunsaturated fatty acids in lakes worldwide. Nevertheless, a comprehensive understanding of the joint effects of lake trophic status, nutrient dynamics and warming on the availability of these biomolecules is lacking. Here, we conducted a laboratory experiment to study how warming (18–23°C) interacts with phosphorus (0.65–2.58 μM) to affect phytoplankton growth and their production of polyunsaturated fatty acids. We included 10 species belonging to the groups diatoms, golden algae, cyanobacteria, green algae, cryptophytes and dinoflagellates. Our results show that both temperature and phosphorus w…

Basal ice formation in snow cover in Northern Finland between 1948 and 2016

2018

Abstract Basal ice formation in the terrestrial snow cover is a common phenomenon in northern circumpolar areas, one having significant impacts on ecosystems, vegetation, animals and human activities. There is limited knowledge on the spatial and temporal occurrence of basal ice formation because of the sparse observation network and challenges involved in detecting formation events. We present a unique dataset on the annual extent of ice formation events in northern Finland between 1948 and 2016 based on reindeer herders’ descriptions of the cold season in their management reports. In extreme years, basal ice can form over wide geographical extents. In approximately half of the herding dis…

IEL.21-22-Unit 5. The Protection of the Atmosphere

2022

Zambrano González, K. (2022). The Protection of the Atmosphere. Powerpoint of the International Environmental Law subject. Academic course 2021-2022. 19. UNIT 5.-THE PROTECTION OF THE ATMOSPHERE. 1. General aspects: Long-Range Transboundary Air Pollution Convention, 1979. 2. Vienna Convention for the Protection of the Ozone Layer. 3. Legal instruments regulating Climate Change: UNFCCC; Kyoto Protocol; Paris Agreement; COP26 - Glasgow Climate Pact

Copenhagen failure : a rhetorical treatise of how speeches unite and divide mankind

2010

The purpose of this treatise is to analyse five of the Copenhagen Climate Convention's main speeches to see how they supported or weakened the agreement possibilities in the convention. Particular focus will be on the elements that divide or unite negotiators and whether the summit's failing outcome is already built in the pre-planned speeches held at the main podium. Theoretically, the study builds on Kenneth Burke's identification thesis and Elizabeth L. Malone's climate change debate analysis. I combine these in my analysis using a revised version of Malone's argument family classification tool putting it into Burke's theoretical framework. The central concept is Burke's identification, …