Table 1. Keywords examined in the discourse analysis.
| Climate change | Transition | Emissions | Clean energy | ||||
|---|---|---|---|---|---|---|---|
| Main terms | Variants | Main terms | Variants | Main terms | Variants | Main terms | Variants |
| 1.5 degree* | 1.5°C | carbon + variant | activit*;business*; credit*; cost*; offset*; polic*; pric*; project*; tax* | carbon + variant | abatement; dioxide*; CO2; emission*; footprint; intensity; neutral*; zero-, sink* | alga* | |
| 2 degree* | 2°C; two degree* | decarbon* | ccs/ccus | carbon capture; carbon storage; carbon removal | alternative + variant | fuel, energ* | |
| climate | transition* | energy efficiency | energy efficient | batter* | |||
| dual challenge | sustainab* | flar* | biofuel* | biopower, bioenerg*, biomass | |||
| OGCI | Oil and Gas Climate Initiative | fluorinat* | clean* + variant | fuel, energ* | |||
| IPCC | Intergovernmental Panel on Climate Change | greenhouse | GHG | electric vehicle | electric mobility; electric transport; EV, charging; charger* | ||
| Kyoto | Hydrofluorocarbon* | perfluorocarbon* | electricit* | power* | |||
| Paris | sulfur hexafluoride | ethanol | methanol | ||||
| UNFCCC | United Nations Framework Convention on Climate Change | methane | CH4 | geothermal | |||
| warming | net zero | zero net | hydropower | ||||
| N2O | nitrous oxide | hydrogen | |||||
| low* carbon | |||||||
| renewable* | |||||||
| solar | |||||||
| wind | |||||||
Note: More comprehensive information on the omitted keywords appears in S1 File.