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Free, publicly-accessible full text available May 1, 2026
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Reconciling the total carbon budget for boreal forest wildfire emissions using airborne observationsWildfire impacts on air quality and climate are expected to be exacerbatedby climate change with the most pronounced impacts in the boreal biome.Despite the large geographic coverage, there is limited information onboreal forest wildfire emissions, particularly for organic compounds, whichare critical inputs for air quality model predictions of downwind impacts.In this study, airborne measurements of 193 compounds from 15 instruments,including 173 non-methane organics compounds (NMOG), were used to providethe most detailed characterization, to date, of boreal forest wildfireemissions. Highly speciated measurements showed a large diversity ofchemical classes highlighting the complexity of emissions. Usingmeasurements of the total NMOG carbon (NMOGT), the ΣNMOG wasfound to be 50 % ± 3 % to 53 % ± 3 % of NMOGT, of which, theintermediate- and semi-volatile organic compounds (I/SVOCs) were estimatedto account for 7 % to 10 %. These estimates of I/SVOC emission factorsexpand the volatility range of NMOG typically reported. Despite extensivespeciation, a substantial portion of NMOGT remained unidentified(47 % ± 15 % to 50 % ± 15 %), with expected contributions from morehighly-functionalized VOCs and I/SVOCs. The emission factors derived in thisstudy improve wildfire chemical speciation profiles and are especiallyrelevant for air quality modelling of boreal forest wildfires. Theseaircraft-derived emission estimates were further linked with those derivedfrom satellite observations demonstrating their combined value in assessingvariability in modelled emissions. These results contribute to theverification and improvement of models that are essential for reliablepredictions of near-source and downwind pollution resulting from borealforest wildfires.more » « less
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In this article I seek to locate — in space and time, and in Somali diaspora studies — that group within the ethnic Somali diaspora that identifies its “homeland” as the eastern part of Ethiopia, which in 1995 became Somali Regional State under Ethiopia’s federal constitution. “Ethiopian Somali” remains for many Somalis a contested identifier, and yet as Hagmann and Khalif argue, the “invention” of such an identity“bears symbolic significance, as it had hitherto been regarded as something out of the question.” The analysis combines ethnographic research in the US and Ethiopia with an analysis of county-level data from the American Community Survey to assess the presence of Ethiopian-origin Somalis in the US and ongoing shifts in identification towards becoming Ethiopian Somali.more » « less
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Recent academic discussion as well as political and popular debates have increasingly centered on the growth of economic inequality both within and between national economies. Credit Suisse now reports that 50% of the world’s wealth is in the hands of 1% of its population, a group of ultra-wealthy mostly concentrated in the US, China and the UK. More generally, while there were for a time hopeful reports based on a “convergence” thesis of global economic development, the share of wealth in already-wealthy countries has increased since the 2008 financial crisis. Over these same years, international development discourses have begun to focus on the role and effectiveness of diaspora groups in redistributing wealth and driving economic development in their countries of origin, advocating for remittances and diaspora investment as an alternative to government aid or other types of foreign aid. This paper offers a preliminary assessment of the dynamics of diaspora economic involvement in Ethiopia and Somaliland and the potential avenues through which diaspora investment may work to redistribute wealth or to bring new dynamics of inequality to local settings—or whether diaspora return may be to some extent more a side effect of global inequality than a potential avenue to combat it. It draws on data from an ongoing study of the economic impact of diaspora return to Jigjiga, Ethiopia, and compares some preliminary results with secondary data from Hargeisa and other locations to develop a better understanding of the promises and pitfalls of diaspora finance.more » « less
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