Estimated input of particles from aircraft over the UK Boeing 777* uses 8.49 kg·km−1 fuel Average distance travelled by aircraft over UK approximately 250 km In 2000 there were about 2 million take offs and landings (TOFL’s) The area of England and Wales is 151,000 km2 Number of particles day−1·m−2 = (2 × 106 × 8.49 × 250 × 1016)/365 × 151,000 × 106 = 77,021 × 107 |