When your supervisor is away… | Western Physics and Astronomy --- What's Happening

A murder of Crows gathers to hear the squawking of the Elder Crow - who just now figured out way the group found my graph of averaging kernels so amusing!

Well done Henry! See his photos here:

When your supervisor is away… | Western Physics and Astronomy --- What's Happening

PCL’s transmitted laser beam in the rain

In case you wondered what does the PCL’s transmitted laser beam look like when it is drizzling out. The answer is weird, instead of a steady bright green column you get all this “carbonated” bubbling in the beam from the water droplets.

Laser Beam in Drizzle from Robert Sica on Vimeo.

PCL makes the Ontario Physics Grade 12 textbook

Crow Andy joined us at the lidar last night and showed us this page from the Ontario Grade 12 Physics text: the PCL is now appearing in backpacks all over the province.

(this photo dates back to our location at the Delaware Observatory and was taken by Honorary Crow for Life Luc Girard).

Colorado Fire Smoke Over London, Canada?

Here’s some uncalibrated lidar measurements from the night of 21 June, 2013 which show what appears to be a faint smoke layer around 13 km. I did a quick and dirty run of HYSPLIT and the trajectories go back to Colorado in about 2 days. They descend about 25% of their initial height, e.g. as they go across the prairies they drop, for instance, from 10,000 m to 7,500 m elevation.

Uncalibrated returns from The University of Western Ontario’s Purple Crow Lidar, shows an apparent thin smoke layer around 13 km altitude. Full size image available here.

@EB 7June13

@EB 7June13, a set on Flickr.

Some fun lidar photos from #EchoBase on Friday night via Crow Emily.