The travel industry’s carbon footprint has been growing at an alarming rate, outpacing the overall global economy, according to new research published in Nature Communications. The rising demand for international travel has led to significant increases in carbon dioxide (CO2) emissions over the past decade, with tourism-related emissions growing nearly twice as fast as the global economy, researchers say.
The study highlights that tourism in the top 20 emitting countries, including the United States, China, and India, is expanding by up to 5% annually, exacerbating energy consumption and CO2 emissions in these regions. These countries contribute to about three-quarters of the total tourism-related carbon footprint, underscoring the inequality in per-capita emissions.
Transportation, particularly air and ground travel, is identified as a primary contributor to these emissions. Despite some technological advancements aimed at improving fuel efficiency, slow progress in decarbonization continues to drive up the sector’s emissions. The COVID-19 pandemic temporarily halted travel, reducing emissions by 60% in 2020, but tourism has rebounded strongly since, with growth expected to return to pre-pandemic levels by the end of 2024.
In addition to regular commercial flights, private aviation has been a significant contributor. A separate study on private jet emissions found a 46% increase in CO2 emissions between 2019 and 2023. Private jets, which make up a small portion of total aviation, can have an outsized impact. For instance, major international events like COP28 and the FIFA World Cup saw a spike in private jet use, contributing thousands of metric tons of CO2 to the atmosphere.
The broader impact of tourism on global emissions is troubling, with previous studies indicating that tourism contributes approximately 8% of global greenhouse gas emissions—this number has likely grown since. The research stresses the urgent need for effective policies to curb tourism’s environmental impact and align the sector with global climate targets. However, only countries like New Zealand and Denmark are currently monitoring tourism-related emissions at the national level.
Tourism, worth an estimated $10 trillion in 2023, is one of the largest economic sectors globally, driving demand for transportation, accommodation, food, and shopping. The study emphasizes that the tourism industry’s expansion, coupled with its rising emissions, calls for immediate attention from governments and the global community to reduce its environmental impact.