1/4/2023 0 Comments Geodist two datasets![]() ![]() In particular, journeys between neighboring countries, where cross-border mobility is particularly high (Deutschmann, 2016), are likely to be severely underestimated since people often use car, railway, or bus transportation rather than flights. The data on air passenger traffic, in turn, does not factor in people who do not travel by airplane. It is also distorted because visitors from some countries with few departures are not counted since their specific travel origin does not show up in the receiving country’s tourism statistics. The data on tourism is incomplete in that people moving between countries for reasons other than tourism (in particular, returning residents) are not included. These limitations result in under-reporting of the scale of actual mobility across national borders. Given that their data have been collected for different purposes, both sources, taken individually, have clear limitations when used in the attempt to provide insights into global human mobility. In this specific sub-project, we capitalize on two of the most comprehensive data sources on transnational human movements at a global scale:ĭata on tourism, i.e., cross-border visits that include an overnight stay ( nota bene: not necessarily for leisure), from the World Tourism Organization (UNWTO) ĭata on cross-border air passenger traffic from Sabre, a private company that collects data directly from the airline industry. The Global Mobilities Project (GMP) at the European University Institute’s Migration Policy Centre (MPC) aims to fill this gap by addressing different dimensions of transnational Footnote 1 mobilities (Recchi, 2017). However, there is a surprising dearth of systematic information detailing the size of travel flows across countries worldwide. Moreover, mobility data can contribute directly to understanding the scale of seasonal and other temporary forms of migration, which are hardly captured by official statistics (Gabrielli et al., 2019). For a quantitative take on migration, thus, knowledge of the mobility flows of the world population amounts to a preliminary framing of global migration. All international migrants have in common the basic fact of crossing (at least) one country border at some point of their migration trajectory. Transnational mobility is the sine qua non of international migration. ![]()
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