141 research outputs found

    Adaptatie van infrastructuur aan klimaatverandering: strategieën in andere landen

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    In deze notitie wordt bekeken hoe in andere landen wordt omgegaan met aanpassing aan klimaatverandering op het gebied van infrastructuur, met het accent op zes dimensies: risicobenadering, omgaan met onzekerheden, afwegingskaders, afstemming tussen bestuursniveau’s, beleidsintegratie, en internationale samenwerking. Met uitzondering van de watersector is infrastructuur over het algemeen niet het beleidsterrein waar aanpassing aan klimaatverandering zich vooralsnog primair op richt, behalve in een aantal landen waar de infrastructuur bijzonder kwetsbaar is, zoals in pool- en berggebieden. De notitie trekt dan ook lessen vanuit een breder beleidsterrein dan uitsluitend infrastructuur. Nederland samen met het Verenigd Koninkrijk speelt een voortrekkersrol bij klimaatadaptatie. Dat sluit echter niet uit dat uit vergelijking met andere landen geen interessante lessen af te leiden zijn. Ook buiten Europa ( Canada en Australië) zijn waardevolle voorbeelden en ervaringen te vinden over infrastructuur en klimaatverandering. De notitie leidt uit deze ervaringen in andere landen een aantal aanbevelingen af voor de verdere ontwikkeling van adaptatiebeleid in de infrastructurele sector en identificeert een aantal relevante kennislacunes

    Partnership of European Environmental Research: climate projects 2008

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    Powerpoint presentation about the Partnership of European environmental research: climate projects 2008. This presentation is about the TOLERATE conference of May 19th 200

    European air quality maps 2005 including uncertainty analysis

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    The objective of this report is (a) the updating and refinement of European air quality maps based on annual statistics of the 2005 observational data reported by EEA Member countries in 2006, and (b) the further improvement of the interpolation methodologies. The paper presents the results achieved and an uncertainty analysis of the interpolated maps and builds upon earlier reports from Horalék et al. (2005; 2007)

    Influence of future air pollution mitigation strategies on total aerosol radiative forcing

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    We apply different aerosol and aerosol precursor emission scenarios reflecting possible future control strategies for air pollution in the ECHAM5-HAM model, and simulate the resulting effect on the Earth's radiation budget. We use two opposing future mitigation strategies for the year 2030: one in which emission reduction legislation decided in countries throughout the world are effectively implemented (current legislation; CLE 2030) and one in which all technical options for emission reductions are being implemented independent of their cost (maximum feasible reduction; MFR 2030). We consider the direct, semi-direct and indirect radiative effects of aerosols. The total anthropogenic aerosol radiative forcing defined as the difference in the top-of-the-atmosphere radiation between 2000 and pre-industrial times amounts to -2.00 W/m2. In the future this negative global annual mean aerosol radiative forcing will only slightly change (+0.02 W/m2) under the "current legislation" scenario. Regionally, the effects are much larger: e.g. over Eastern Europe radiative forcing would increase by +1.50 W/m2 because of successful aerosol reduction policies, whereas over South Asia it would decrease by -1.10 W/m2 because of further growth of emissions. A "maximum feasible reduction" of aerosols and their precursors would lead to an increase of the global annual mean aerosol radiative forcing by +1.13 W/m2. Hence, in the latter case, the present day negative anthropogenic aerosol forcing could be more than halved by 2030 because of aerosol reduction policies and climate change thereafter will be to a larger extent be controlled by greenhouse gas emissions. We combined these two opposing future mitigation strategies for a number of experiments focusing on different sectors and regions. In addition, we performed sensitivity studies to estimate the importance of future changes in oxidant concentrations and the importance of the aerosol microphysical coupling within the range of expected future changes. For changes in oxidant concentrations caused by future air pollution mitigation, we do not find a significant effect for the global annual mean radiative aerosol forcing. In the extreme case of only abating SO2 or carbonaceous emissions to a maximum feasible extent, we find deviations from additivity for the radiative forcing over anthropogenic source regions up to 10% compared to an experiment abating both at the same time

    What do near-term observations tell us about long-term developments in greenhouse gas emissions? A letter

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    Long-term scenarios developed by integrated assessment models are used in climate research to provide an indication of plausible long-term emissions of greenhouse gases and other radiatively active substances based on developments in the global energy system, land-use and the emissions associated with these systems The phenomena that determine these long-term developments (several decades or even centuries) are very different than those that operate on a shorter time-scales (a few years) Nevertheless, in the literature, we still often find direct comparisons between short-term observations and long-term developments that do not take into account the differing dynamics over these time scales In this letter, we discuss some of the differences between the factors that operate in the short term and those that operate in the long term We use long-term historical emissions trends to show that short-term observations are very poor indicators of long-term future emissions developments Based on this, we conclude that the performance of long-term scenarios should be evaluated against the appropriate, corresponding long-term variables and trends The research community may facilitate this by developing appropriate data sets and protocols that can be used to test the performance of long-term scenarios and the models that produce the

    Complete genome sequence of phocine distemper virus isolated from a harbor seal (Phoca vitulina) during the 1988 North Sea epidemic

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    Phocine distemper virus (PDV) was identified as the cause of a large morbillivirus outbreak among harbor seals in the North Sea in 1988. PDV is a member of the family Paramyxoviridae, genus Morbillivirus. Until now, no full-genome sequence of PDV has been available

    Joint Programming Initiative Climate

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    From 2008 to 2011, Knowledge for Climate contributed to the development of the Joint Programming Initiative “Connecting Climate Knowledge for Europe” (JPI Climate). In 2010, a proposal was developed and accepted, followed in 2011 by the development and adoption of a governance structure and a strategic research agenda. The Initiative is supported by 12 member and 3 observer countries. It is expected to play a major role in aligning climate research programmes in the participating countries and developing joint activities to enhance the effectiveness and efficiency of national programmes. This report summarizes the most important documents and the Dutch involvement in the programme, including the development of a Vision Paper. It also discusses the future plans and collaborations

    Optimization and Dose Estimation of Aerosol Delivery to Non-Human Primates

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    Background: In pre-clinical animal studies, the uniformity of dosing across subjects and routes of administration is a crucial requirement. In preparation for a study in which aerosolized live-attenuated measles virus vaccine was administered to cynomolgus monkeys (Macaca fascicularis) by inhalation, we assessed the percentage of a nebulized dose inhaled under varying conditions. Methods: Drug delivery varies with breathing parameters. Therefore we determined macaque breathing patterns (tidal volume, breathing frequency, and inspiratory to expiratory (I:E) ratio) across a range of 3.3-6.5 kg body weight, using a pediatric pneumotachometer interfaced either with an endotracheal tube or a facemask. Subsequently, these breathing patterns were reproduced using a breathing simulator attached to a filter to collect the inhaled dose. Albuterol was nebulized using a vibrating mesh nebulizer and the percentage inhaled dose was determined by extraction of drug from the filter and subsequent quantification. Results: Tidal volumes ranged from 24 to 46 mL, breathing frequencies from 19 to 31 breaths per minute and I:E ratios from 0.7 to 1.6. A small pediatric resuscitation mask was identified as the best fitting interface between animal and pneumotachometer. The average efficiency of inhaled dose delivery was 32.1% (standard deviation 7.5, range 24%-48%), with variation in tidal volumes as the most important determinant. Conclusions: Studies in non-human primates aimed at comparing aerosol delivery with other routes of administration should take both the inter-subject variation and relatively low efficiency of delivery to these low body weight mammals into account
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