The primary objective of the European eXport of Precursors and Ozone by long-Range Transport (EXPORT) project is to characterise and quantify the photochemical air pollution both forming over Europe and being exported eastwards from Europe. The data held at BADC was collected during a co-ordinated 3 aircraft flying campaign in August 2000 based at Oberpfaffenhofen in Southern Germany. Measurements were made of many photochemical parameters including ozone, its precursors, other oxidants and both gas phase and particulate tracers in the air over Europe and that being transported eastwards out of Europe.

This dataset contains airborne atmospheric and chemistry measurements taken on board the Met Office C-130 Hercules aircraft flight A774 for the EXPORT project. The flight was overGermany, Austria, Czech and Slovak Reps, and Poland.

The sortie was flown without any major problems. The mission scientists opted to do more levels in Nitra Slovakia, with level runs at FL70, 90, 130, 150 and 200. There was some confusion with calibrations and zeros, which had not been integrated into the sortie brief. This resulted in effectively extending each run from 10 to 15 minutes.

The Falcon was operating in the area at the same time. At one point they flew underneath us at FL90, while we were at FL120 flying eastbound. We then transited north to Poland, via the Czech Republic.

An additional 50' approach to Pardevice airport was added into the sortie before the final transit back to Oberpfaffenhofen.

Heavy cloud and precipitation was encountered on the return transit to a very wet Oberpfaffenhofen.