Jeffrey P. Cohen, Cletus C. Coughlin, Jonas C. Crews
{"title":"Airport Noise in Atlanta: The Inequality of Sound","authors":"Jeffrey P. Cohen, Cletus C. Coughlin, Jonas C. Crews","doi":"10.20955/wp.2017.015","DOIUrl":"https://doi.org/10.20955/wp.2017.015","url":null,"abstract":"We examine how changes in the geographic concentrations of Hispanic and African-American populations are correlated with changes in probabilities of airport noise, in Atlanta, during 2003 and 2012. We estimate ordered probit and locally weighted ordered probit regressions for three different noise categories to determine the correlations between these two demographic groups and the aircraft noise levels experienced by people in individual houses that sold. Then we determine the average coefficient for all houses sold in each Census block group, and we plot each year’s coefficients for each block group against the percentiles of the minority population. While the absolute level of noise has declined over the geographic area considered in 2012 compared with 2003, we find that the distribution of noise coefficients among Hispanics and blacks became more inequitable in 2012 compared with 2003. At least two potential mechanisms could generate these correlations. Due to residential mobility, income and preferences could combine to produce a concentration of minorities in certain neighborhoods. Or, perhaps noisier flight paths are imposed upon higher minority neighborhoods as a result of discrimination. Our findings contribute to the broader literature on environmental justice, even though we cannot definitively infer the mechanisms at work.","PeriodicalId":307622,"journal":{"name":"TransportRN: Pollutants Emitted by Transportation Systems (Air","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133733342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Trade and Climate Policies: Do Emissions from International Transport Matter?","authors":"Frank Vohringer, Jean‐Marie Grether, N. Mathys","doi":"10.1111/twec.12052","DOIUrl":"https://doi.org/10.1111/twec.12052","url":null,"abstract":"This paper provides orders of magnitude of the importance of CO2 emissions from international freight transport activities under a variety of scenarios regarding trade and climate policies. It is based on a stylised multiregion, multisector CGE model that includes the four modes of international transport (air, water, road and rail) and where choices regarding the energy mix and transport modes have been endogeneised. A separate decomposition of emission changes into the well‐known scale, composition and technique effects is provided. Scale effects turn out to be roughly double in international transport than in exports, while technique effects are weaker due to less substitutability between energy inputs. As a result, international transport represents half of the world increase in global emissions when trade liberalisation is considered in isolation. When trade liberalisation is coupled with a carbon tax limited to rich countries, the change in international transport emissions represents roughly one‐eighth of the carbon leakage effect.","PeriodicalId":307622,"journal":{"name":"TransportRN: Pollutants Emitted by Transportation Systems (Air","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127525732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}