It is now recognized that widespread damage due, for instance, to sea level rise and more frequent and intense heat waves, floods and droughts, will occur even for small increases of global average temperature. Therefore it is necessary that very strong efforts be made to hold the average global temperature rise below 2º Celsius relative to its preindustrial level.
现在人们认识到，即使是全球平均气温的微幅升高也会带来诸如海平面上升和更频繁和更严重的热浪、洪水和干旱，并由此造成广泛的损害。因此，有必要作非常大的努力，让全球平均气温的上升控制在相对于前工业化时期气温的摄氏2 º范围内。