Here are some photos of my research...

Meteorological tower in Lee Vining Canyon, Sierra Nevada.
Notice the classic foehn wall over the Dana Plateau.

Pilot balloon release in lower Lee Vining Canyon, Sierra Nevada. June 1996.

No-lift balloon release in upper Lee Vining Canyon, Sierra Nevada. June 1996.

Tethersonde experiment in Yosemite Valley, Sierra Nevada, winter 1998

T-sonde site and camp looking southwest.

The ease and fun of T-sonde flying!

Ed Powers digging out the shelter after yet another Sierra snowfall at
Tioga Pass, Sierra Nevada. Winter 1994/1995.