1,730,129 research outputs found

    Modelling the impact of sanitation, population growth and urbanization on human emissions of cryptosporidium to surface waters: A case study for Bangladesh and India

    No full text
    Cryptosporidium is a protozoan parasite that can cause diarrhoea. Human faeces are an important source of Cryptosporidium in surface waters. We present a model to study the impact of sanitation, urbanization and population growth on human emissions of Cryptosporidium to surface waters. We build on a global model by Hofstra et al (2013 Sci. Total Environ. 442 10–9) and zoom into Bangladesh and India as illustrative case studies. The model is most sensitive to changes in oocyst excretion and infection rate, and to assumptions on the share of faeces reaching the surface water for different sanitation types. We find urban centres to be hotspots of human Cryptosporidium emissions. We estimate that 53% (Bangladesh) and 91% (India) of total emissions come from urban areas. 50% of oocysts come from only 8% (Bangladesh) and 3% (India) of the country area. In the future, population growth and urbanization may further deteriorate water quality in Bangladesh and India, despite improved sanitation. Under our 'business as usual' ('sanitation improvements') scenario, oocyst emissions will increase by a factor 2.0 (1.2) for India and 2.9 (1.1) for Bangladesh between 2010 and 2050. Population growth, urbanization and sanitation development are important processes to consider for large scale water quality modelling.Water ManagementCivil Engineering and Geoscience

    The Arctic matters: extreme weather responds to diminished Arctic Sea ice

    No full text
    Screen et al (2015 Environ. Res. Lett. http://dx.doi.org/10.1088/1748-9326/10/8/084006 10 http://dx.doi.org/10.1088/1748-9326/10/8/084006 ) find that model simulations forced by past and future Arctic sea-ice conditions provide robust evidence that a variety of extreme weather events both within and beyond the Arctic will be affected by changing sea-ice conditions

    Ten years of the Three Gorges Dam: A call for policy overhaul

    No full text
    10.1088/1748-9326/8/4/041006Environmental Research Letters8

    A ‘fair and ambitious’ climate agreement is not nearly enough: Paris 2015 take heed!

    No full text
    Peters et al (2015 Environ. Res. Lett. http://dx.doi.org/10.1088/1748-9326/10/10/105004 10 http://dx.doi.org/10.1088/1748-9326/10/10/105004 ) find that the INDCs submitted prior to the upcoming UNFCCC meetings in Paris are not nearly ‘fair and ambitious’ enough to achieve the goal of limiting global warming to <2 °C and that much greater attention needs to be paid to advanced energy technologies, without which climate goals are unattainable

    Cleaner air has contributed one-fifth of US maize and soybean yield gains since 1999

    No full text
    Replication data and code for publication found at https://doi.org/10.1088/1748-9326/ac0fa
    corecore