attending: SCO, ALEX, NSF, 109th, CPS, NOAA
This call centered around coming to a consensus on which of two different proposed Isi layouts to proceed with. In both layouts, the skiway is east of the station, with AWO 1km west of the station and the telescope 1.7km north of the station. One option (Option 5A) had the skiway further east than the other option (Option 3A).
Jack discussed the tradeoffs, with one being the concern of emissions from the Hercs, and the other being the additional operational costs, and emissions, if camp is located further away from the skiway, as well as bringing up a big question of where the apron really needs to be, i.e. having the apron half way down the skiway would reduce operations (Paul seemed amenable to this). An option of shifting the apron ¾ way down the skiway was also discussed. Jack mentioned that what would be ideal for the 109th would be to have the apron right at camp on the far northern end.
Paul mentioned that the most important factor for them is the northern boundary, and that if the 109th has a missed approach when they have low visibility they need to be able to avoid any structures when they turn around.
Jay asked if the 109th will need weather observations from the skiway or if they could be from the Summit camp proper. This will depend on the discussion of the max distance where NOAA will move their equipment and where the skiway will be. Brian said that NOAA could deploy a second AWS, and Paul said that one with a met suite like the AWS’s deployed in Antarctica would work well.
Jay asked if there would be a 50 m tower. Most likely there will be, with Bo Grimes being the contact to ask about that for the telescope.
We then discussed the problems the 109th have had taking off…it is possible that a longer skiway would have led to fewer slides. The 109th only keeps track of the number of slides to take off, not the other conditions. The option of changing the time of day for the flights was discussed, but early morning flights generally have foggy conditions, with afternoon flights being warmer, and leading to problems.
Doing a snow drift study once the foundation is placed was also discussed. The skiway will need to be moved in 2016 because the foundation will be too big for skiway ops.