1. Global Patterns of Carbon Dioxide, NASA, 2013. 〈https://earthobservatory.nasa.gov/images/82142/global-patterns-of-carbon-dioxide〉. (Accessed 30 July 2019).
2. Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms;Orr;Nature,2005
3. Ocean acidifi cation unprecedented, unsettling;Kerr;Science,2010
4. Carbon dioxide sensing properties of bismuth cobaltite;Casas-cabanas;Sens. Actuators B Chem.,2011
5. Climate Change Atmospheric Carbon Dioxide NOAA Climate, 2020. 〈https://www.climate.gov/news-features/understanding-climate/climate-change-atmospheric-carbon-dioxide〉. (Accessed 30 July 2019).