GLOBAL SYSTEMS INSTITUTE

Publications

Modelling sewer discharge via displacement of manhole covers during flood events using 1D/2D SIPSON/P-DWave dual drainage simulations

Publication ID: pub.1022574012

Publication date: 05/06/2015

Keywords: Bradford; Coupled 1D/2D Modelling; Displacement of Manhole Cover; Manhole Surcharge; UK; Urban Flooding

In urban areas, overloaded sewers may result in surcharge that causes surface flooding. The overflow from sewer systems mainly starts at the inlets until the pressure head in the manhole is high enough to lift up its cover, at which stage the surcharged flow may be discharged via the gap between the bottom of the […]

Coral bleaching under unconventional scenarios of climate warming and ocean acidification

Publication ID: pub.1040766609

Publication date: 25/05/2015

Keywords: Climate Mitigation; Coral Bleaching; Coral Degradation; Emissions Reductions; Geoengineering; Global; Ocean Acidification; Solar Radiation Management (SRM); Stratospheric Aerosol; Technological Solutions

Widespread severe coral bleaching and degradation is projected to occur by 2050 due to global warming. But the risk of global bleaching could be reduced through climate engineering using stratospheric aerosol-based solar radiation management.

An empirical examination of echo chambers in US climate policy networks

Publication ID: pub.1005985524

Publication date: 25/05/2015

Keywords: Climate Change; Climate Policy; Echo Chamber; Model; Policy Communication; Science Communication; US

Diverse methods have been applied to understand why science continues to be debated within the climate policy domain. A number of studies have presented the notion of the ‘echo chamber’ to model and explain information flows across an array of social settings, finding disproportionate connections among ideologically similar political communicators. This paper builds on these […]

The dominant role of semi-arid ecosystems in the trend and variability of the land CO2 sink

Publication ID: pub.1050052371

Publication date: 21/05/2015

Keywords: Atmosphere; Carbon Cycle; Carbon Dioxide; Forests; Global; Grassland

The growth rate of atmospheric carbon dioxide (CO2) concentrations since industrialization is characterized by large interannual variability, mostly resulting from variability in CO2 uptake by terrestrial ecosystems (typically termed carbon sink). However, the contributions of regional ecosystems to that variability are not well known. Using an ensemble of ecosystem and land-surface models and an empirical […]

A global analysis approach for investigating structural resilience in urban drainage systems.

Publication ID: pub.1018011644

Publication date: 20/05/2015

Keywords: Cities; Computer Simulation; Drainage, Sanitary; Equipment Failure; Floods; Hydrology; Kampala; Models, Theoretical; Rain; Uganda

Building resilience in urban drainage systems requires consideration of a wide range of threats that contribute to urban flooding. Existing hydraulic reliability based approaches have focused on quantifying functional failure caused by extreme rainfall or increase in dry weather flows that lead to hydraulic overloading of the system. Such approaches however, do not fully explore […]

Stratospheric influence on tropospheric jet streams, storm tracks and surface weather

Publication ID: pub.1009642109

Publication date: 18/05/2015

Keywords: Circumpolar Jet; Climate Change Projections; Eddy Feedbacks; Global; Storm Tracks; Stratospheric Influence; Strengthening Jet; Surface Weather; Tropospheric Jet Streams; Weakening Jet; Weather; Weather Forecasts

The atmospheric layer that lies above Earth’s weather systems can exert a strong downward influence. A review of this influence on storm tracks and surface weather suggests that the dynamical links between the layers hold across timescales.