Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 25 for “"last millennium"”.
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Gulf Stream temperature, salinity and transport during the last millennium
… Stream cross-current density gradient during the last millennium. These data imply that Gulf Stream transport during the Little Ice Age (LIA: 1200-1850 A.D.) was 2-3 Sv lower than today. The timing of reduced flow is consistent with cold conditions in Northern Hemisphere paleoclimate archives, …
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Gulf stream temperature, salinity and transport during the last millennium
… Stream cross-current density gradient during the last millennium. These data imply that Gulf Stream transport during the Little Ice Age (LIA: 1200-1850 A.D.) was 2-3 Sv lower than today. The timing of reduced flow is consistent with cold conditions in Northern Hemisphere paleoclimate archives, …
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Assimilation of Seasonal Moisture Variability in North America and Asia for the Last Millennium
… moisture over North America (NASM) in the last millennium using PDA method. Additionally, the global SST and 500 hPa geopotential height were also reconstructed using PDA. The validation of various instrumental data shows that the reconstruction skill of NASM is slightly better than the …
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Exploring last millennium tropical Pacific hydrology: Insights from climate models, proxy data, and proxy system modeling
Author requested closed access (OA after 2yrs) in Vireo ETD system
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Greenlandic ice archives of North Atlantic Common Era climate
… changes in coastal precipitation during the last millennium, including a ~40% increase in coastal precipitation since the industrial-onset. These changes are drastically larger than those observed from inland Greenland records, revealing enhanced sensitivity in west Greenlandic hydroclimates …
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New ice core records from West Antarctica and their spatial context: from 1000 to 100,000 years
… of the WAIS during warm periods, such as the Last Interglacial (LIG) when the WAIS is proposed to have retreated, and the Holocene prior to anthropogenic warming. Ice core records can be used to reconstruct climatic changes and infer past ice sheet configurations. However, existing long-term …
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Media law reforms: The quest to transform the Zambia national broadcasting corporation-ZNBC-From state owned and controlled media to a public service broadcaster
… in Zambia have been intensified and in the last half of the last millennium, Zambia has seen a lot of developments in the media.The focus has been to open up the market for private radio, television and newspapers and magazines. But very few efforts have been made to try and transform the …
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Media law reforms: The quest to transform the Zambia national broadcasting corporation-ZNBC-From state owned and controlled media to a public service broadcaster
… in Zambia have been intensified and in the last half of the last millennium, Zambia has seen a lot of developments in the media.The focus has been to open up the market for private radio, television and newspapers and magazines. But very few efforts have been made to try and transform the …
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"De fide orthodoxa" and Gregory of Elvira's trinitarian vision.
… have been cloaked in obscurity for the last millennium and more, the fourth chapter details his literary works and the efforts that have made possible the recovery of his literary patrimony. Once the manuscript matters have been thoroughly addressed, chapter five provides an English …
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The tropical peatland carbon sink: climatic drivers and modelling of peat accumulation at the pan-tropical scale
… carbon accumulation rates (aCAR) over the last millennium in tropical peatlands range from 1.1 to 152.0 gC m-2 yr-1, and the main climatic control on aCAR differs between lowland and high-elevation (>1000m a.s.l.) sites. For lowland peatlands, the best predictor is the mean monthly …
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Exploration of natural climate variability and changes in future events using observations, proxy data and model simulations
… to climate change during the pre-industrial last millennium (850 – 1850 CE), an era in which anthropogenic changes had not yet taken over and other phenomena were dominant. Using observational data, paleoclimate proxy records and climate model simulations, we assess the evidence for natural, …
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An archaeological investigation of the Kirfi area, northern Nigeria: craft, identity and landscape
… exploring the complex cultural make- up of the last millennium. I also show that oral tradition is valuable to studies of later African societies when carefully critiqued, in view of the dearth of early written and historical scripts. This thesis will also show how external influences were to …
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THE VARIABILITY OF DROUGHT DYNAMICS IN THE SOUTHWEST UNITED STATES AND AN ANALYSIS OF DROUGHT RISK IN THE NORTHEASTERN UNITED STATES
… in the NEUS and found that GCMs, from both the last millennium ensemble (LME) and CMIP6, have a wet bias in the northeast. Radiation at the surface of the Earth is a balance between incoming solar radiation and outgoing longwave radiation. The surface may also lose energy through sensible heat …
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On the external forcing of Indian Ocean climate variability across timescales
… northern Madagascar which spans the end of the last glacial period. Stable isotope and trace metal proxies indicate drier conditions in response to North Atlantic cooling events, such as Heinrich stadials, and wetter conditions during North Atlantic warming events, such as the Bølling–Allerød. …
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Decadal to centennial-scale climate interactions across the Indo-Pacific region
… Southeast Asian rainfall extremes during the last millennium, although the influence of volcanic eruptions was detectable. We found that multi-year pluvials were contributed by both Pacific and Indian Ocean modes, while droughts were largely only driven by Pacific Ocean impacts. Our analysis …
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Ecology, history, management and conservation of the multipurpose Forest of Wyre
… of the management of Wyre Forest over the last millennium and to interpret these events by analysing existing forest vegetation; to describe in detail the phytosociological nature of the forest and determine a range of environmental factors which influenced these vegetation patterns; and to …
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Climate Drivers Compound Under Climate Change
… 6, and from the Community Earth System Model Last Millennium Ensemble were analysed. Models include experiments to represent pre-industrial climate, historical climate, and a high greenhouse gas emission scenario for the future climate. Indices to represent the state of ENSO, IOD and SAM were …
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Climate Drivers Compound Under Climate Change
… 6, and from the Community Earth System Model Last Millennium Ensemble were analysed. Models include experiments to represent pre-industrial climate, historical climate, and a high greenhouse gas emission scenario for the future climate. Indices to represent the state of ENSO, IOD and SAM were …
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Decadal to centennial-scale climate interactions across the Indo-Pacific region
… Southeast Asian rainfall extremes during the last millennium, although the influence of volcanic eruptions was detectable. We found that multi-year pluvials were contributed by both Pacific and Indian Ocean modes, while droughts were largely only driven by Pacific Ocean impacts. Our analysis …
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On the external forcing of Indian Ocean climate variability across timescales
… northern Madagascar which spans the end of the last glacial period. Stable isotope and trace metal proxies indicate drier conditions in response to North Atlantic cooling events, such as Heinrich stadials, and wetter conditions during North Atlantic warming events, such as the Bølling–Allerød. …
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