温おん暖だん化か現げん象しょう

• 温おん暖だん化か

  温暖化 is the more common, shorter term for 'global warming'; 温暖化現象 explicitly refers to the phenomenon itself.

• 温おん室しつ効こう果か

  温室効果 is the direct translation of 'greenhouse effect' and is used in scientific contexts, while 温暖化現象 is a broader term for the warming phenomenon.

Compound of 温暖 (warm) + 化 (-ization) + 現象 (phenomenon). A modern term for the greenhouse effect and global warming.