Since the beginning of the industrial revolution, atmospheric concentrations of carbon dioxide have increased nearly 30%, methane concentrations have more than doubled, and nitrous oxide concentrations have risen by about 15%. These increases have enhanced the heat trapping capability of the earth's atmosphere.
Tangu yalipoanza kutokea mabadiliko ya viwanda mlundiko/ongezeko la carbon dioxide limepanda kwa asilimia thelathini (30%) na kiasi cha methane nacho kimeongezeka mara dufu. Wakati huo huo, nayo nitrous oxide imeongezeka kwa asilimia kumi na tano (15%).