Multi-scale sensible heat fluxes in the urban environment from large aperture scintillometry and eddy covariance

Sensible heat fluxes (QH) are determined using scintillometry and eddy covariance over a suburban area. Two large aperture scintillometers provide spatially integrated fluxes across path lengths of 2.8 km and 5.5 km over Swindon, UK. The shorter scintillometer path spans newly built residential areas and has an approximate source area of 2-4 km2, whilst the long path extends from the rural outskirts to the town centre and has a source area of around 5-10 km2. These large-scale heat fluxes are compared with local-scale eddy covariance measurements. Clear seasonal trends are revealed by the long duration of this dataset and variability in monthly QH is related to the meteorological conditions. At shorter time scales the response of QH to solar radiation often gives rise to close agreement between the measurements, but during times of rapidly changing cloud cover spatial differences in the net radiation (Q*) coincide with greater differences between heat fluxes. For clear days QH lags Q*, thus the ratio of QH to Q* increases throughout the day. In summer the observed energy partitioning is related to the vegetation fraction through use of a footprint model. The results demonstrate the value of scintillometry for integrating surface heterogeneity and offer improved understanding of the influence of anthropogenic materials on surface-atmosphere interactions

Disloyal, Deluded, Dangerous: How Supporters of Violence or Separatism Discredit Their Political Opponents

Where there is conflict between groups, members argue with each other over the correct course of action. While some advocate increased violence or separation between the groups, others argue for peace, tolerance, or interdependence. Advocates of violence or separation engage in discursive strategies to discredit these ingroup opponents, in which they claim to represent the true interests and spirit of the group while their opponents are dismissed are selfish, disloyal, subservient, weak, or ignorant. Methods of discrediting opponents act as a form of social pressure, defining a set of social norms, punishing dissenters, and warning others against publicly adopting opposing positions. This chapter examines the discursive practices used to discredit opponents in a range of current and historical conflict situations. A distinction will be drawn between ‘mild’ and ‘strong’ discrediting practices