Search for dissertations about: "Past climates"
Showing result 6 - 10 of 11 swedish dissertations containing the words Past climates.
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6. Modelling the early to mid-Holocene Arctic climate
Abstract : In the recent past it has become evident that the Earth's climate is changing, and that human activity play a significant role in these changes. One of the regions where the ongoing climate change has been most evident is in the Arctic: the surface temperature has increased twice as much in this region as compared to the global average, in addition, a significant decline in the Arctic sea-ice extent has been observed in the past decades. READ MORE
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7. Paleoclimate perspective on Earth's climate sensitivity and feedbacks
Abstract : The addition of carbon dioxide (CO2) in the atmosphere due to human activities is the main driver of global warming. How much the Earth will warm in the future is often represented by the Earth's equilibrium climate sensitivity (ECS), the long-term temperature response considering the effect of climate feedbacks after an abrupt and sustained doubling of atmospheric CO2 from pre-industrial concentration. READ MORE
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8. Provenance of the pre-Quaternary aeolian dust deposits of East Asia
Abstract : Atmospheric mineral dust is a key component in the climate system, but its effect on and response to climate changes are poorly understood, especially over long timescales. This thesis investigates the sources of late Paleogene and Neogene dust deposits that formed under warmer-than-present global climates in the northern Chinese Loess Plateau (CLP) region in mid-latitude East Asia. READ MORE
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9. Seed dormancy and germination in an ecological context : comparative studies of annual weeds
Abstract : Germination ecology studies, i.e. studies of interactions between characteristics of the seeds and environmental circumstances, provide understanding of spatial and temporal patterns of emergence of wild species, as weeds in the field. A large number of species have seed dormancy, i. READ MORE
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10. Glaciers and climate in northern Sweden during the 19th and 20th century
Abstract : Our understanding of the climate of northern Sweden during the late Holocene is largely dependent on proxy-data series. These datasets remain spatially and temporally sparse and instrumental series are rare prior to the mid 19th century. READ MORE