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)

Herndon et al. (2005) estimate there are 1016 particles released from burning of 1 kg fuel

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