Campaign and flight tracks
The measurement domain and operational basis of the field campaign in the United Arab Emirates (UAE) are shown in Figure 1. From the UAE a large region can be covered, up to the Himalayas, if needed through refueling stops in India or Nepal. The aircraft and its scientific payload are certified for civil operation (STC) so that it can fly over most countries without difficulty. The maximum flight range of the aircraft is about 8,000 km, and the highest altitude that can be reached is 15.5 km. The campaign encompasses 10‐12 measurement flights of about 6‐8 hours duration during a four‐week intensive field phase in July‐August 2015.