26,028 research outputs found
N2O flux (eddy covariance and vented soil chamber) and microclimatic measurements, PTPN6 oil palm plantation, Jambi, Indonesia
No full textThis dataset contains data of ecosystem-scale CO2 and N2O fluxes based on eddy covariance measurements, data of point-scale N2O fluxes based on vented soil chamber measurements, and measurements of microclimatic variables in PTPN6 oil palm plantation, Jambi Province, Indonesia, during the period August 2017 to April 2019
Infiltration measurements (Landscape Assessment)
No full textInfiltration measurements at the plot-level during the Landscape Assessmen
Greenhouse gas flux measurements in oil palm plantation
No full textThis data set summarizes greenhouse gas measurements of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) in a 1-year old and in a 12-year old oil palm (Elaeis guineensis Jacq.) plantation
Instant soil moisture & soil temperature measurements at the subplot-level (Landscape Assessment)
No full textInstant measurements of soil moisture and soil temperature at the subplot-leve
Meteorological data from plot and reference locations EFForTS CRC990 Landscape Assessment
No full textMeteorological data from plot and reference locations during the EFForTS CRC990 Landscape Assessment. Measured parameters: solar flux density, precipitation, number & average distance of lightning strikes, wind speed, wind direction, air temperature, atmospheric vapour pressure, air pressure, relative humidity, soil temperature, soil moisture, saturation vapour pressure, actual air pressure, vapour pressure deficit, air density, air heat capacity
Measurement interval: 1 minut
Surface energy exchange and land-atmosphere interactions of Arctic and subarctic tundra ecosystems under climate change
No full textThe surface energy balance determines the functioning of any ecosystem on the Earth but is still poorly understood in Arctic and subarctic biomes. In a dynamic system, such as the Earth’s climate, any change in its characteristics modifies the exchange of energy, water, and greenhouse gases between the surface and the atmosphere. Therefore, this thesis aims to draw a conclusive picture of the surface energy exchange and land-atmosphere interactions of Arctic and subarctic regions under climate change. The aims are achieved by combining in-situ field measurements of surface energy balance components, snow manipulation experiments, active layer monitoring, vegetation mapping, and chamber-based carbon dioxide flux measurements from Arctic and subarctic tundra biomes in Greenland, Svalbard and northern Sweden. Local variability in climate, surface structure, soil moisture and soil thermal regime are the main drivers of variation in the surface energy exchange and ecosystem productivity of Arctic and subarctic tundra ecosystems. At all studied locations, the magnitude of the energy fluxes of sensible heat (H), latent heat (LE) and ground heat (G) were well-correlated with net radiation (Rnet). However, evapotranspiration (ET) and LE showed a relatively strong coupling to atmospheric vapor pressure deficit (VPD), with more pronounced such control at the dry tundra sites compared to the wet-growing ecosystems. Snow and permafrost determined surface energy balance, energy partitioning and ecosystem productivity. Manipulated increase in snow accumulation at a subarctic tundra peatland complex in northern Sweden resulted in permafrost thaw, soil wetting and increased carbon sequestration. Concurrently, climate-driven increase in both snow accumulation and air temperature triggered dramatic and rapid permafrost degradation in peatland complexes and transition from dry habitats into wet-growing ecosystems, with consequent change in surface energy exchange towards both increased LE and ET at the cost of H. Interannual variability in winter snow accumulation at the high-Arctic tundra environment in Zackenberg (Northeast Greenland) prolonged the growing season during a year with low snow cover and increased the total accumulated energy balance components of the local heath and fen ecosystems. Further, energy flux partitioning at the heath was strongly determined by the reduction of soil moisture as snow is by far the main supplier of water in this region. The energy exchange of the fen, however, showed attenuated behavior due to groundwater table remaining close to the surface. The results presented in this thesis suggest that in a future climate, accelerated permafrost thaw and increased interannual variability in snow cover may further modify the energy balance of Arctic and subarctic ecosystems, with profound impact on ecosystem adaptation capacities and the overall climate system
Surface energy exchange and land-atmosphere interactions of Arctic and subarctic tundra ecosystems under climate change
No full textThe surface energy balance determines the functioning of any ecosystem on the Earth but is still poorly understood in Arctic and subarctic biomes. In a dynamic system, such as the Earth’s climate, any change in its characteristics modifies the exchange of energy, water, and greenhouse gases between the surface and the atmosphere. Therefore, this thesis aims to draw a conclusive picture of the surface energy exchange and land-atmosphere interactions of Arctic and subarctic regions under climate change. The aims are achieved by combining in-situ field measurements of surface energy balance components, snow manipulation experiments, active layer monitoring, vegetation mapping, and chamber-based carbon dioxide flux measurements from Arctic and subarctic tundra biomes in Greenland, Svalbard and northern Sweden. Local variability in climate, surface structure, soil moisture and soil thermal regime are the main drivers of variation in the surface energy exchange and ecosystem productivity of Arctic and subarctic tundra ecosystems. At all studied locations, the magnitude of the energy fluxes of sensible heat (H), latent heat (LE) and ground heat (G) were well-correlated with net radiation (Rnet). However, evapotranspiration (ET) and LE showed a relatively strong coupling to atmospheric vapor pressure deficit (VPD), with more pronounced such control at the dry tundra sites compared to the wet-growing ecosystems. Snow and permafrost determined surface energy balance, energy partitioning and ecosystem productivity. Manipulated increase in snow accumulation at a subarctic tundra peatland complex in northern Sweden resulted in permafrost thaw, soil wetting and increased carbon sequestration. Concurrently, climate-driven increase in both snow accumulation and air temperature triggered dramatic and rapid permafrost degradation in peatland complexes and transition from dry habitats into wet-growing ecosystems, with consequent change in surface energy exchange towards both increased LE and ET at the cost of H. Interannual variability in winter snow accumulation at the high-Arctic tundra environment in Zackenberg (Northeast Greenland) prolonged the growing season during a year with low snow cover and increased the total accumulated energy balance components of the local heath and fen ecosystems. Further, energy flux partitioning at the heath was strongly determined by the reduction of soil moisture as snow is by far the main supplier of water in this region. The energy exchange of the fen, however, showed attenuated behavior due to groundwater table remaining close to the surface. The results presented in this thesis suggest that in a future climate, accelerated permafrost thaw and increased interannual variability in snow cover may further modify the energy balance of Arctic and subarctic ecosystems, with profound impact on ecosystem adaptation capacities and the overall climate system
Towards a Christian Philosophy
No full textAuthor did not sign the LAC Non-Exclusive License form.The relationship between philosophy and Christianity has, of course, a long history, as do the discussions of that relationship. My own position is not dissimilar to that of many of the early Church Fathers, though of course that position must be elaborated differently for various historical and personal reasons, and hopefully enriched by attention to the history of Western philosophy. As with all such relations, one's understanding of this relation has a lot to do with one's understanding of the terms involved. To promote the possibility of "Christian philosophy" is also to comment on that "and" which might be understood to relate two otherwise distinct and irreconcilable terms. In the end I claim this "and" must be understood as that "love" which defines philosophy as the "love of wisdom" (and finally, the wisdom of love), and does so in terms which (almost) merge-with the surprising assistance of such thinkers as Martin Heidegger, Jacques Derrida, and Paul Ricoeur-with those of the Church Fathers cited. On the one hand, I intend nothing but the historical, orthodox, and catholic understanding of Christianity, especially with regard to the central figure of Jesus the Christ, the Trinitarian God whom He embodies, represents, and reveals, and the Scriptures given as The Bible. On the other hand, I present the specifically philosophical pertinence of this unique Person as such emerges from the texts of the "philosophers" considered, and in a manner which I claim does not force the issue by reading into their texts what is not there. Attending to a (Christian) philosophical reflection on (Christian) philosophy also offers elaborations of inherited doctrines, both Christian and philosophical, including a way to read and think unique to the outcome. Such is the adventure of this current work
The Christian Right and US Foreign Policy in the Twenty-first Century
Get PDFThe thesis discusses the role of the Christian Right in the US foreign policy decision making process. The research revealed that the Christian Right has long been fascinated with some international issues in general and US foreign policy in particular. The Christian Right’s interest in international issues increased markedly during years of the George W. Bush presidency. It successfully widened its activities from domestic social conservative issues to foreign policy issues by participating in, articulating and lobbying for its religious version of American foreign policy. In assessing the role of the Christian Right in US foreign policy making, this dissertation examines three aspects of US foreign policy, namely Israel, international religious freedom and global humanitarianism. Based on these aspects, the Christian Right is seen as skilled in framing and defining issues. The Christian Right seems effective in selecting and prioritizing international issues that have a reasonable chance of being selected by foreign policy decision makers, especially in Congress. Moreover, the Christian Right has shown its maturity in seeking engagement and cooperation with other organizations, secular and religious, in order to advance its international goals. Finally, in pursuing and conveying its international agenda, the Christian Right has adopted a more moderate and less overtly religious approach. Instead of using its traditional religious rhetoric, the Christian Right has successfully projected its foreign policy preferences into the conventional realist discourse of American foreign policy that is largely based on the objective of national interest and national security. Nevertheless, this study does not, in any way, conclude that the Christian Right was able to influence or determine the direction of US foreign policy and its outcomes; however, it does suggest that the Christian Right did contribute and have an impact on the formulation of some US foreign policy. As such, the research contends that the role of the Christian Right is similar to other interest group lobbies and that its perceived influence on US foreign policy should not be exaggerated. Finally, the research suggests that the emergence of the Christian Right as an actor in asserting its global agenda through US foreign policy can possibly provide an example of how religious beliefs and values can become a potential source of “soft power”. Together with the “climate of opinion” of the American public during the Bush administration, the “soft power” at domestic level could serve as a valuable new explanatory variable in understanding how the US foreign policy was formulated in the early 21st century
Sabbath, Psalms and Eucharist: Christopher Southgate considers Christian perspectives on the climate emergency
Get PDFThis is the author accepted manuscript. The final version is available from Green Christian via the URL in this record In this brief article I want to explore what resources Christian thought might offer the
climate emergency, and those challenged by the slowness with which the generation
with the power (my own) are addressing the huge challenges that are ever more
evidently unfolding on our planet
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