Search results for " migration."
showing 10 items of 718 documents
New horizons for fundamental physics with LISA
2022
K. G. Arun et al.
2016
Abstract. Through measurements of NO2, O3 and NO3 during the PARADE campaign (PArticles and RAdicals, Diel observations of mEchanisms of oxidation) in the German Taunus mountains we derive nighttime steady-state lifetimes (τss) of NO3 and N2O5. During some nights, high NO3 (∼ 200 pptv) and N2O5 (∼ 1 ppbv) mixing ratios were associated with values of τss that exceeded 1 h for NO3 and 3 h for N2O5 near the ground. Such long boundary-layer lifetimes for NO3 and N2O5 are usually only encountered in very clean/unreactive air masses, whereas the PARADE measurement site is impacted by both biogenic emissions from the surrounding forest and anthropogenic emissions from the nearby urbanised/industri…
Diurnal variability, photochemical production and loss processes of hydrogen peroxide in the boundary layer over Europe
2019
Hydrogen peroxide (H2O2) plays a significant role in the oxidizing capacity of the atmosphere. It is an efficient oxidant in the liquid phase and serves as a temporary reservoir for the hydroxyl radical (OH), the most important oxidizing agent in the gas phase. Due to its high solubility, removal of H2O2 due to wet and dry deposition is efficient, being a sink of HOx (OH+HO2) radicals. In the continental boundary layer, the H2O2 budget is controlled by photochemistry, transport and deposition processes. Here we use in situ observations of H2O2 and account for chemical source and removal mechanisms to study the interplay between these processes. The data were obtained during five ground-base…
Airborne observation of mixing across the entrainment zone during PARADE 2011
2016
This study presents the analysis of the structure and air mass characteristics of the lower atmosphere during the field campaign PARADE (PArticles and RAdicals: Diel observations of the impact of urban and biogenic Emissions) on Mount Kleiner Feldberg in southwestern Germany during late summer 2011. We analysed measurements of meteorological variables (temperature, moisture, pressure, wind speed and direction) from radio soundings and of chemical tracers (carbon dioxide, ozone) from aircraft measurements. We focus on the thermodynamic and dynamic properties that control the chemical distribution of atmospheric constituents in the boundary layer. We show that the evolution of tracer profiles…
An Urban Governance Framework for Including Environmental Migrants in Sustainable Cities
2022
This article proposes an urban governance framework for including environmental migrants in sustainable cities. It outlines the links among environmental migration, vulnerability, and sustainability, showing how vulnerability and sustainability are not about the environment or the human condition as snapshots in space and time, but rather are long-term, multi-scalar, ever-evolving processes. This theoretical baseline is followed by a description of some practical approaches already applied for including environmental migrants in sustainable cities. The wide variety and lack of cohesion justifies the need for a framework, leading to three principal characteristics of a governance framework s…
Transcreating the Myth: “Voiceless Voiced” Migrants in the Queens of Syria Project
2018
This study functions within the conceptual and practical framework in which transcreation is located as the natural result of the process of adaptation of migrant Syrian narratives to the ancient myth of the Trojan women. While scrutinising the parallelisms between the Syrian women’s stories and those told by Euripides’s myth about the Trojan women, the real experiences of migration have turned myth into an act of communication, “an experiential act” meant for the construction of human stories that reverse mainstream anti-refugee policies. The dissemination of mythological narratives through adaptations of migrant stories, where myth and translation seem to go hand in hand, has reinforced t…
Tick-borne pathogens in Ixodes ricinus ticks collected from migratory birds in southern Norway
2020
Birds are important hosts for the first life stages of the Ixodes ricinus tick and they can transport their parasites over long distances. The aim of this study was to investigate the prevalence of Borrelia burgdorferi sensu lato, Anaplasma phagocytophilum, Neoehrlichia mikurensis and Rickettsia helvetica in ticks collected from migratory birds in Norway. A total of 815 Ixodes ricinus ticks from 216 birds trapped at Lista Bird Observatory in southern Norway during spring and autumn migration in 2008 were analysed by real-time PCR. B. burgdorferi s. l. was the most prevalent pathogen, detected in 6.1% of the ticks. The prevalence of N. mikurensis, A. phagocytophilum and R. helvetica was 1.2%…
Reemigrācijas attīstība Baltijas valstīs
2016
Migrācija ir nebeidzams pārvietošanās process, gan reģionālā, gan globālā līmenī. Migrācija ietekmē dažādas cilvēku grupas – ekonomiskos migrantus, bez pajumtes palikušās personas, bēgļus (patvēruma meklētājus) un ceļotājus. Migrācija ir daudzslāņains, sarežģīts process, kuru izpētes gaitā nepieciešams skatīt no dažādiem aspektiem, tādēļ, lai gūtu plašāku pārskatu par migrācijas paveida – remigrācijas attīstību Baltijas valstīs, maģistra darbs ir strukturēts divos līmeņos – empīriskais pētījums par trīs Baltijas valstīm – Lietuvu, Latvija un Igauniju un kvalitatīvais pētījums – reemigrācijas attīstība Baltijas valstīs: Latvijas gadījums. Maģistra darba mērķis ir veikt padziļinātu izpēti par…
Salah Methnani’s Immigrato: Portrait of a Migrant as a Young Man
2012
Although after Unification Italy was predominantly a country of emigration, in recent years it has become a hub for migrants from different parts of the world. Among these migrants a group of writers has contributed to re-configuring Italy's national literary identity. Read by critics primarily as an autobiographical text with remarkable sociological value, Tunisian-born Salah Methnani’s Immigrato is, I argue, first and foremost a classic Bildungsroman. Salah, the 'immigrant' in the title, is the story's protagonist, point of view and leading metaphor. His Bildung follows a double path. On the one hand Italy is a country imagined through TV and books read in school, on the other it is the c…
Postfazione a E. C. Osondu, Quando il cielo vuole spuntano le stelle
2020
The Postface to E. C. Osondu's most recent novel offers a commentary on this Bildungsroman, whose protagonist is a young man from an unknown African country who leaves home behind to reach Europe hoping in a better world. Although narrated in a lyrical tone, the protagonist's epic journey resonates with the actual stories of the uncountable young African men who in the past years have crossed the Black Mediterranean.