Spatial and temporal dynamics of the urban heat island effect in a small Brazilian city

This study examined the spatial and temporal patterns of the canopy layer urban heat islands (UHI_UCL) in a small city in southeastern Brazil using the local climate zone (LCZ) system. We analysed the influence of weather conditions, LCZs characteristics, and local surface relief on the UHI_UCL magnitudes. Mobile traverses were used to measure air temperatures during representative nights of wet and dry seasons. Daily maximum magnitudes were observed in compact classes (LCZs 3 and 7) under ideal weather conditions (dry, clear skies, and calm) and higher anthropogenic heat release (weekdays). Seasonal effects on LCZ thermal differences were negligible. The peripheral landscapes were warmer than the city centre in both seasons. Among the warmer areas in the city, magnitudes in compact LCZs 3 and 7 were consistently higher than in LCZ 6. In general, representative sites of the main ‘built’ LCZs in the study area exhibit similar inter-zone temperature patterns to those reported for cities of different sizes from tropical and midlatitude regions. Thermal contrasts of ΔT_{LCZ 3 − D} in the study area reveal significant evidence that small cities can have as strong heat islands as bigger cities. These findings highlight the importance of the LCZ system to identify the main controlling factors driving such thermal differences and the need to extend the application of this approach in other South American cities to yield systematic data of UHI_UCL for urban planning given the coming challenges of climate change over the region.     

Peripheral creativity: temporary cultural uses as alternatives to inefficient policies?

ABSTRACT

The article focuses on temporary and improvised cultural spaces in marginalized neighbourhoods of Rio de Janeiro, Brazil. They are presented here as alternatives to current urban and cultural policies, often based on international ‘best practices’ models with exclusionary and segregating consequences. It begins with a brief overview into North American and Western European cultural planning policies. It then analyses the instability of cultural policies in Brazil, highlighting that, after a period of State recognition of bottom-up actions, administrators have turned to a contradictory planning scheme that mixes outdated and recent international trends, leading lower-income inhabitants to self-build their own cultural spaces. Unlike many products of today’s global strand of ‘tactic urbanism’, Rio’s temporary spaces are politically charged territories of resistance. An example is ‘Cine Taquara’ – an improvised cinema and debate forum that illustrates how, in an unequal city, such initiatives can do more towards social inclusion than ready-made models.     

The mean measure of divergence and the use of non-metric data in the estimation of biological distances

The mean measure of divergence as a means of comparing two populations on the basis of non-metric data is described. Some statistical properties of this measure are derived and it is shown that its variance has frequently been misquoted in the literature. Alternative means of comparing two populations are presented and some improvements to the measure of divergence are suggested.     

Roses in January: a neglected dimension in Gregory of Tour's historiae

Gregory of Tours was a sixth-century bishop who wrote Ten books of histories, our only detailed source of information for that period in Gaul. A great deal of attention has been paid to his vivid portrayal of Merovingian society and politics. Apart from his often obscure Latin, the strictly chronological composition and the absence of clear co-ordinating statements give his work the appearance of a jumbled, if lively, mosaic. The following study is an attempt to follow one strand through the many-coloured texture of the Histories, that of extraordinary natural events and the context in which Gregory places them, since this seemed to reveal an up to now not so apparent dimension of his thinking about time and, history: his concept of contemporaneity.     

The sin of cain

In this comment, the author reflects on where Europe has gone wrong in terms of becoming more inward looking. What might anthropologists do about it?     

Filiation as a crossroads in Bahia

Drawing on ethnographic material collected in Bahia (Brazil) between 2004 and 2011, this article presents an alternative account of the notion of ‘filiation’ that avoids the equivoques concerning this concept that are dominant within contemporary anthropological discourses on kinship. The story of a lay preacher whose faith responds to her lack of a father figure illuminates how the constitution of personhood is based on filiation as a triangulation.     

CHATTING ABOUT MARRIAGE WITH FEMALE MIGRANTS TO SYRIA

The increasing number of women migrating to Syria from Europe has not only drawn the attention of the media and the security forces but also of researchers. Publications often either undervalue or overvalue women's agency, presenting them as victims of unscrupulous men or foregrounding their militant activism. As many authors work in the field of radicalisation and terrorism studies and use public online posts, they focus on the more radical, activist women who are keen to present themselves to the world at large. In our research project we work with a different focus and employ a different method. Our interest in how these women arrange their marriages and our use of private chatting produces other kinds of knowledge. In contrast to what labels such as ‘jihadi brides’ suggest, the women themselves desire to live under IS rule, while IS increasingly regulates these marriages. Rather than desiring to become female fighters or recruiting others, they see themselves as responsible for domestic life and attempt to normalize life under IS rule.