1,067 research outputs found

    Climate Change and Water Resources in Ireland: Initial investigations using downscaled GCMS and hydrological modelling techniques.

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    Predictions are made of changes in effective runoff at a high spatial resolution for the island of Ireland under different climate change scenarios. Although previous studies have examined the response of selected Irish catchments to future climate scenarios this is the first time that the whole area of the island has been considered. This paper discusses the initial investigation that has been carried out and outlines research currently in progress. Polynomial regression techniques are used to derive a baseline climatology for Ireland. Downscaled precipitation and evaporation data from the United Kingdom Climate Program (UKCIP)for the Medium-low 2080 scenario is used together with the baseline data for the initial investigation. The precipitation and potential evaporation (PE) data are converted to a suitable form for input to HYSIM. Two sets of simulations are carried out for 825 JO x JO km grid squares covering the land area of the island of Ireland for the baseline period and the 2080 scenario. The hydrological parameters for each of these squares are considered to be identical for this initial investigation. The results of this investigation are presented. Future work is considered, focusing on the parameterisation of HYSIM for individual grid cells. The initial investigation demonstrates that the representation of storage is of particular importance. Parameter values are derived for each square using data from the Soil Survey of Ireland, the CORINE land use database and information on major aquifers provided by the Geological Survey of Ireland. The flexible data requirements of HYSIM allow some representation of the diverse hydrological conditions found within Ireland. For example, approximately 40% of Ireland is underlain by limestones, many of which are karstified. These karst aquifers are an important water resource and can respond very rapidly to precipitation inputs. There are also extensive areas of lakes and wetlands. The land area is divided into broad hydrological zones to provide some representation of this variability

    Assessing the Impact of Climate Change on Water Supply and Flood Hazard in Ireland using Statistical Downscaling and Hydrological Modelling Technique

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    Although Ireland is relatively well endowed with water resources, regional shortages can occur at certain times of the year, especially in the east and south east of the country. The rapid expansion of urban areas such as Dublin, Cork, and Limerick, associated with recent economic conditions, is putting an increasing strain on the water supply infrastructure. The increased demand for water comes mainly from the industrial and domestic sectors, with domestic demand increasing both as a result of population growth and rising water consumption per capita. As a result, low flows are becoming more frequent in some areas and it is likely that future climate change scenarios will exacerbate these effects. At the same time, many Irish rivers are prone to flooding, especially those in the west, with the Shannon being a prime example. Increases in winter precipitation over the western part of the island are likely to increase the magnitude and frequency of flood events, and increase the duration of seasonal flooding. The aim of this research, therefore, is to simulate patterns of runoff under baseline and future climate scenarios, at a fine spatial resolution, in order to assess annual and seasonal changes

    Skin-impedance in Fabry Disease: A prospective, controlled, non-randomized clinical study

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    <p>Abstract</p> <p>Background</p> <p>We previously demonstrated improved sweating after enzyme replacement therapy (ERT) in Fabry disease using the thermo-regularity sweat and quantitative sudomotor axon reflex tests. Skin-impedance, a measure skin-moisture (sweating), has been used in the clinical evaluation of burns and pressure ulcers using the portable dynamic dermal impedance monitor (DDIM) system.</p> <p>Methods</p> <p>We compared skin impedance measurements in hemizygous patients with Fabry disease (22 post 3-years of bi-weekly ERT and 5 ERT naive) and 22 healthy controls. Force compensated skin-moisture values were used for statistical analysis. Outcome measures included 1) moisture reading of the 100<sup>th </sup>repetitive reading, 2) rate of change, 3) average of 60–110<sup>th </sup>reading and 4) overall average of all readings.</p> <p>Results</p> <p>All outcome measures showed a significant difference in skin-moisture between Fabry patients and control subjects (p < 0.0001). There was no difference between Fabry patients on ERT and patients naïve to ERT. Increased skin-impedance values for the four skin-impedance outcome measures were found in a small number of dermatome test-sites two days post-enzyme infusions.</p> <p>Conclusion</p> <p>The instrument portability, ease of its use, a relatively short time required for the assessment, and the fact that DDIM system was able to detect the difference in skin-moisture renders the instrument a useful clinical tool.</p

    Climate Change: Scenarios & Impacts for Ireland (2000-LS-5.2.1-M1) ISBN:1-84095-115-X

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    The Third Assessment Report of the Intergovernmental Panel on Climate Change (IPCC, 2001) is the most authoritative assessment of global climate change to date. Produced by several hundred leading scientists in various areas of climate studies, its principal conclusions include the following: • Global average temperature has increased by 0.6 ± 0.2°C since 1860 with accelerated warming apparent in the latter decades of the 20th century. A further increase of 1.5–6.0°C from 1990 to 2100 is projected, depending on how emissions of greenhouse gases increase over the period. • The 20th century was the warmest of the last millennium in the Northern Hemisphere, with the 1990s being the warmest decade and 1998 the warmest year. Warming has been more pronounced at night than during the day. • Reductions in the extent of snow cover of 10% have occurred in the past 40 years, with a widespread retreat also of mountain glaciers outside the polar regions. Sea-ice thickness in the Arctic has declined by about 40% during late summer/early autumn, though no comparable reduction has taken place in winter. In the Antarctic, no similar trends have been observed. One of the most serious impacts on global sea level could result from a catastrophic failure of grounded ice in West Antarctica. This is, however, considered unlikely over the coming century. • Global sea level has risen by 0.1–0.2 m over the past century, an order of magnitude larger than the average rate over the past three millennia. A rise of approximately 0.5 m is considered likely during the period 1990–2100. • Precipitation has increased over the land masses of the temperate regions by 0.5–1.0% per decade. Frequencies of more intense rainfall events appear to be increasing also in the Northern Hemisphere. In contrast, decreases in rainfall over the tropics have been observed, though this trend has weakened in recent years. More frequent warm-phase El Niño events are occurring in the Pacific Basin. Precipitation increases are projected, particularly for winter, for middle and high latitudes in the Northern Hemisphere and for Antarctica. • No significant trends in the tropical cyclone climatology have been detected. These global trends have implications for the future course of Ireland’s climate which it is judicious to anticipate. This report presents an assessment of the magnitude and likely impacts of climate change in Ireland over the course of the current century. It approaches this by establishing scenarios for future Irish climate based on global climate model projections for the middle and last quarter of the present century. These projections are then used to assess probable impacts in key sectors such as agriculture, forestry, water resources, the coastal and marine environments and on biodiversity. The purpose of the report is to firstly identify where vulnerability to climate change exists in Ireland and what adjustments are likely in the operation of environmental systems in response to such changes. In some sectors, e.g. agriculture, some new opportunities may arise. In other instances, e.g. water resource management, long-term planning strategies will be necessary to mitigate adverse impacts. Long lead times for adjustment characterise many sectors, e.g. forestry, and it is important to provide as much advance warning of likely changes as possible to enable adaptation to commence early. By anticipating change it may be possible to minimise adverse impacts and to maximise positive aspects of global climate change

    Climate Change: Scenarios & Impacts for Ireland (2000-LS-5.2.1-M1) ISBN:1-84095-115-X

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    The Third Assessment Report of the Intergovernmental Panel on Climate Change (IPCC, 2001) is the most authoritative assessment of global climate change to date. Produced by several hundred leading scientists in various areas of climate studies, its principal conclusions include the following: • Global average temperature has increased by 0.6 ± 0.2°C since 1860 with accelerated warming apparent in the latter decades of the 20th century. A further increase of 1.5–6.0°C from 1990 to 2100 is projected, depending on how emissions of greenhouse gases increase over the period. • The 20th century was the warmest of the last millennium in the Northern Hemisphere, with the 1990s being the warmest decade and 1998 the warmest year. Warming has been more pronounced at night than during the day. • Reductions in the extent of snow cover of 10% have occurred in the past 40 years, with a widespread retreat also of mountain glaciers outside the polar regions. Sea-ice thickness in the Arctic has declined by about 40% during late summer/early autumn, though no comparable reduction has taken place in winter. In the Antarctic, no similar trends have been observed. One of the most serious impacts on global sea level could result from a catastrophic failure of grounded ice in West Antarctica. This is, however, considered unlikely over the coming century. • Global sea level has risen by 0.1–0.2 m over the past century, an order of magnitude larger than the average rate over the past three millennia. A rise of approximately 0.5 m is considered likely during the period 1990–2100. • Precipitation has increased over the land masses of the temperate regions by 0.5–1.0% per decade. Frequencies of more intense rainfall events appear to be increasing also in the Northern Hemisphere. In contrast, decreases in rainfall over the tropics have been observed, though this trend has weakened in recent years. More frequent warm-phase El Niño events are occurring in the Pacific Basin. Precipitation increases are projected, particularly for winter, for middle and high latitudes in the Northern Hemisphere and for Antarctica. • No significant trends in the tropical cyclone climatology have been detected. These global trends have implications for the future course of Ireland’s climate which it is judicious to anticipate. This report presents an assessment of the magnitude and likely impacts of climate change in Ireland over the course of the current century. It approaches this by establishing scenarios for future Irish climate based on global climate model projections for the middle and last quarter of the present century. These projections are then used to assess probable impacts in key sectors such as agriculture, forestry, water resources, the coastal and marine environments and on biodiversity. The purpose of the report is to firstly identify where vulnerability to climate change exists in Ireland and what adjustments are likely in the operation of environmental systems in response to such changes. In some sectors, e.g. agriculture, some new opportunities may arise. In other instances, e.g. water resource management, long-term planning strategies will be necessary to mitigate adverse impacts. Long lead times for adjustment characterise many sectors, e.g. forestry, and it is important to provide as much advance warning of likely changes as possible to enable adaptation to commence early. By anticipating change it may be possible to minimise adverse impacts and to maximise positive aspects of global climate change

    Climate Change: Scenarios & Impacts for Ireland (2000-LS-5.2.1-M1) ISBN:1-84095-115-X

    Get PDF
    The Third Assessment Report of the Intergovernmental Panel on Climate Change (IPCC, 2001) is the most authoritative assessment of global climate change to date. Produced by several hundred leading scientists in various areas of climate studies, its principal conclusions include the following: • Global average temperature has increased by 0.6 ± 0.2°C since 1860 with accelerated warming apparent in the latter decades of the 20th century. A further increase of 1.5–6.0°C from 1990 to 2100 is projected, depending on how emissions of greenhouse gases increase over the period. • The 20th century was the warmest of the last millennium in the Northern Hemisphere, with the 1990s being the warmest decade and 1998 the warmest year. Warming has been more pronounced at night than during the day. • Reductions in the extent of snow cover of 10% have occurred in the past 40 years, with a widespread retreat also of mountain glaciers outside the polar regions. Sea-ice thickness in the Arctic has declined by about 40% during late summer/early autumn, though no comparable reduction has taken place in winter. In the Antarctic, no similar trends have been observed. One of the most serious impacts on global sea level could result from a catastrophic failure of grounded ice in West Antarctica. This is, however, considered unlikely over the coming century. • Global sea level has risen by 0.1–0.2 m over the past century, an order of magnitude larger than the average rate over the past three millennia. A rise of approximately 0.5 m is considered likely during the period 1990–2100. • Precipitation has increased over the land masses of the temperate regions by 0.5–1.0% per decade. Frequencies of more intense rainfall events appear to be increasing also in the Northern Hemisphere. In contrast, decreases in rainfall over the tropics have been observed, though this trend has weakened in recent years. More frequent warm-phase El Niño events are occurring in the Pacific Basin. Precipitation increases are projected, particularly for winter, for middle and high latitudes in the Northern Hemisphere and for Antarctica. • No significant trends in the tropical cyclone climatology have been detected. These global trends have implications for the future course of Ireland’s climate which it is judicious to anticipate. This report presents an assessment of the magnitude and likely impacts of climate change in Ireland over the course of the current century. It approaches this by establishing scenarios for future Irish climate based on global climate model projections for the middle and last quarter of the present century. These projections are then used to assess probable impacts in key sectors such as agriculture, forestry, water resources, the coastal and marine environments and on biodiversity. The purpose of the report is to firstly identify where vulnerability to climate change exists in Ireland and what adjustments are likely in the operation of environmental systems in response to such changes. In some sectors, e.g. agriculture, some new opportunities may arise. In other instances, e.g. water resource management, long-term planning strategies will be necessary to mitigate adverse impacts. Long lead times for adjustment characterise many sectors, e.g. forestry, and it is important to provide as much advance warning of likely changes as possible to enable adaptation to commence early. By anticipating change it may be possible to minimise adverse impacts and to maximise positive aspects of global climate change

    Climate Change: Scenarios & Impacts for Ireland (2000-LS-5.2.1-M1) ISBN:1-84095-115-X

    Get PDF
    The Third Assessment Report of the Intergovernmental Panel on Climate Change (IPCC, 2001) is the most authoritative assessment of global climate change to date. Produced by several hundred leading scientists in various areas of climate studies, its principal conclusions include the following: • Global average temperature has increased by 0.6 ± 0.2°C since 1860 with accelerated warming apparent in the latter decades of the 20th century. A further increase of 1.5–6.0°C from 1990 to 2100 is projected, depending on how emissions of greenhouse gases increase over the period. • The 20th century was the warmest of the last millennium in the Northern Hemisphere, with the 1990s being the warmest decade and 1998 the warmest year. Warming has been more pronounced at night than during the day. • Reductions in the extent of snow cover of 10% have occurred in the past 40 years, with a widespread retreat also of mountain glaciers outside the polar regions. Sea-ice thickness in the Arctic has declined by about 40% during late summer/early autumn, though no comparable reduction has taken place in winter. In the Antarctic, no similar trends have been observed. One of the most serious impacts on global sea level could result from a catastrophic failure of grounded ice in West Antarctica. This is, however, considered unlikely over the coming century. • Global sea level has risen by 0.1–0.2 m over the past century, an order of magnitude larger than the average rate over the past three millennia. A rise of approximately 0.5 m is considered likely during the period 1990–2100. • Precipitation has increased over the land masses of the temperate regions by 0.5–1.0% per decade. Frequencies of more intense rainfall events appear to be increasing also in the Northern Hemisphere. In contrast, decreases in rainfall over the tropics have been observed, though this trend has weakened in recent years. More frequent warm-phase El Niño events are occurring in the Pacific Basin. Precipitation increases are projected, particularly for winter, for middle and high latitudes in the Northern Hemisphere and for Antarctica. • No significant trends in the tropical cyclone climatology have been detected. These global trends have implications for the future course of Ireland’s climate which it is judicious to anticipate. This report presents an assessment of the magnitude and likely impacts of climate change in Ireland over the course of the current century. It approaches this by establishing scenarios for future Irish climate based on global climate model projections for the middle and last quarter of the present century. These projections are then used to assess probable impacts in key sectors such as agriculture, forestry, water resources, the coastal and marine environments and on biodiversity. The purpose of the report is to firstly identify where vulnerability to climate change exists in Ireland and what adjustments are likely in the operation of environmental systems in response to such changes. In some sectors, e.g. agriculture, some new opportunities may arise. In other instances, e.g. water resource management, long-term planning strategies will be necessary to mitigate adverse impacts. Long lead times for adjustment characterise many sectors, e.g. forestry, and it is important to provide as much advance warning of likely changes as possible to enable adaptation to commence early. By anticipating change it may be possible to minimise adverse impacts and to maximise positive aspects of global climate change

    Climate Change: Scenarios & Impacts for Ireland (2000-LS-5.2.1-M1) ISBN:1-84095-115-X

    Get PDF
    The Third Assessment Report of the Intergovernmental Panel on Climate Change (IPCC, 2001) is the most authoritative assessment of global climate change to date. Produced by several hundred leading scientists in various areas of climate studies, its principal conclusions include the following: • Global average temperature has increased by 0.6 ± 0.2°C since 1860 with accelerated warming apparent in the latter decades of the 20th century. A further increase of 1.5–6.0°C from 1990 to 2100 is projected, depending on how emissions of greenhouse gases increase over the period. • The 20th century was the warmest of the last millennium in the Northern Hemisphere, with the 1990s being the warmest decade and 1998 the warmest year. Warming has been more pronounced at night than during the day. • Reductions in the extent of snow cover of 10% have occurred in the past 40 years, with a widespread retreat also of mountain glaciers outside the polar regions. Sea-ice thickness in the Arctic has declined by about 40% during late summer/early autumn, though no comparable reduction has taken place in winter. In the Antarctic, no similar trends have been observed. One of the most serious impacts on global sea level could result from a catastrophic failure of grounded ice in West Antarctica. This is, however, considered unlikely over the coming century. • Global sea level has risen by 0.1–0.2 m over the past century, an order of magnitude larger than the average rate over the past three millennia. A rise of approximately 0.5 m is considered likely during the period 1990–2100. • Precipitation has increased over the land masses of the temperate regions by 0.5–1.0% per decade. Frequencies of more intense rainfall events appear to be increasing also in the Northern Hemisphere. In contrast, decreases in rainfall over the tropics have been observed, though this trend has weakened in recent years. More frequent warm-phase El Niño events are occurring in the Pacific Basin. Precipitation increases are projected, particularly for winter, for middle and high latitudes in the Northern Hemisphere and for Antarctica. • No significant trends in the tropical cyclone climatology have been detected. These global trends have implications for the future course of Ireland’s climate which it is judicious to anticipate. This report presents an assessment of the magnitude and likely impacts of climate change in Ireland over the course of the current century. It approaches this by establishing scenarios for future Irish climate based on global climate model projections for the middle and last quarter of the present century. These projections are then used to assess probable impacts in key sectors such as agriculture, forestry, water resources, the coastal and marine environments and on biodiversity. The purpose of the report is to firstly identify where vulnerability to climate change exists in Ireland and what adjustments are likely in the operation of environmental systems in response to such changes. In some sectors, e.g. agriculture, some new opportunities may arise. In other instances, e.g. water resource management, long-term planning strategies will be necessary to mitigate adverse impacts. Long lead times for adjustment characterise many sectors, e.g. forestry, and it is important to provide as much advance warning of likely changes as possible to enable adaptation to commence early. By anticipating change it may be possible to minimise adverse impacts and to maximise positive aspects of global climate change

    Cancer cells exploit an orphan RNA to drive metastatic progression.

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    Here we performed a systematic search to identify breast-cancer-specific small noncoding RNAs, which we have collectively termed orphan noncoding RNAs (oncRNAs). We subsequently discovered that one of these oncRNAs, which originates from the 3' end of TERC, acts as a regulator of gene expression and is a robust promoter of breast cancer metastasis. This oncRNA, which we have named T3p, exerts its prometastatic effects by acting as an inhibitor of RISC complex activity and increasing the expression of the prometastatic genes NUPR1 and PANX2. Furthermore, we have shown that oncRNAs are present in cancer-cell-derived extracellular vesicles, raising the possibility that these circulating oncRNAs may also have a role in non-cell autonomous disease pathogenesis. Additionally, these circulating oncRNAs present a novel avenue for cancer fingerprinting using liquid biopsies
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