The research team, led by glaciologist Mauri Pelto, heads towards Sholes Glacier. This will be Pelto's 32nd year collecting data on Sholes Glacier.

The research team heads toward a campsite as Mount Baker catches the last of the day’s light on Thursday, Aug. 6, 2015. This is Pelto’s 32nd year collecting data on Sholes Glacier.

Glaciologist Mauri Pelto pours biodegradable dye into a runoff stream Friday, Aug. 7, 2015, in order to measure the volume of runoff on Sholes Glacier, on the northeast slope of Mount Baker. The glacier has receded more than 90 meters, or nearly 300 feet, Pelto said.

RIGHT: Ben Pelto, son of glaciologist Mauri Pelto, records the time it takes for biodegradable dye to make its way down a glacial stream in order to calculate the volume of runoff on Sholes Glacier. LEFT: Ben Pelto and Tyler Sullivan make their way up Sholes Glacier.

The team of researchers, led by glaciologist Mauri Pelto, travels across Sholes Glacier on Friday, Aug. 7, 2015.

Ben Pelto, son of Mauri Pelto, uses a compass to map the size of Sholes Glacier.

Erica Nied, center, makes her way across the icy runoff stream of Sholes Glacier to take depth measurements as Mauri Pelto records the data. Tyler Sullivan, right, and Ben Pelto, left, measure the width of the stream.

The research team, led by glaciologist Mauri Pelto, heads towards Sholes Glacier, August 6, 2015. This will be Pelto's 32nd year collecting data on Sholes Glacier.