Tuesday, 9 August 2011

Thunder Bay, Goose Bay, Halifax - a little road trip for the flight crew

So I had to leave the guys in Halifax on 27th but the aircraft didn't leave until 2nd August. The day before I left the aircraft and a slimline crew of scientists (to give as much fuel and space for an engineer) set off to Thunder Bay to try and get some measurements close to the source of the plumes, the fires in Ontario. Since Thunder Bay is a long way from Halifax it was necessary to have an overnight stop there. Plan was to fly straight there, refuel and then fly around the region that had been reported to contain many forest fires. Unfortunately for us there had been a significant amount of rain the day before and many of the fires had been extinguished. I was imagining that there would be amazing pictures of huge fires with black smoke billowing out (probably unlikely they would have got close enough for decent pictures had they still been burning, don't want to dirty all the sensitive instruments), however Steve Andrews did manage to get a picture of some small fires still burning.

The levels of carbon monoxide seen were also less than some of us were expecting so close to the burning source, but we did see our highest levels of methane so far. After a very long day flying the flight crew retired to their hotel, which I have heard was 'less than luxurious', for what in some cases was a disrupted night's sleep. The next day all woke up expecting to be heading back towards Halifax but the weather had other plans. Forecasts for fog and bad weather in Halifax and the surrounding areas meant that the requirements for divert airports could not be met and the aircraft would have to find an alternative place to fly to. Since the plan for the next day was to fly to Goose Bay it was decided to head there for the night and fly out from there in the morning. Let's hope they all took a sufficient supply of clean underwear for their little road/air trip. Despite the bad weather forecast for further east, it was a beautiful morning in Thunder Bay and the aircraft took off and headed to Goose Bay.

Morning at Thunder Bay airport

After an overnight in Goose Bay another long day was planned with a 4 hr instrument warm up then a flight around the Goose Bay area, a refuel and a transit back to Halifax (at last!). During this flight the aircraft instruments saw evidence of aged plumes from forest fires against a clean background of marine air. They performed a vertical profile up to 24,000 ft in the same area as the Goose Bay ozone sonde launch site approximately 30 minutes before the daily sonde was launched which should hopefully give a nice comparison. After flying into and out of the plume numerous times and at several heights the aircraft refuelled at Goose Bay and the tired scientists and crew headed for home (well, the holiday inn/hilton hotels) for a good night's sleep. After all, the next day would be a no flying, hard down day, supposedly for rest and relaxation, but in this case would see the second BORTAS football match and hopefully a win for the flight team this time!

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