National Aeronautics and Space Administration

Wallops Flight Facility

Holmes-Frost IS-2

The OIB science and GV teams completed the “Holmes-Frost IS-2” mission today, in excellent sunny weather (just slightly hazy near the coast and clear blue skies up on the plateau. We had a bit of mild turbulence near the coast also, but only a few minutes. The scenery over the sea ice and near the coast was great, and uphill was typical flat and white.

All OIB remote sensing instruments (ATM T6 green, and T7 green and IR lidars, FLIR camera, CAMBOT camera, Headwall NWIR and SWIR imaging spectrometers, CReSIS Snow and MCoRDS radars and LDEO gravimeter) all reported good collection today. A ramp pass at 2000’ was completed just before landing.

Tomorrow is a crew rest day, so the next mission attempt will be on Sunday here in Hobart Australia.

Flight plan for today

ATM pre-flight laser check onboard NASA 5

Today’s flight path

Interesting gyre pattern in the loosely-packed sea ice near 63.001 S and 135.69 E at altitude

Icebergs and sea ice southbound descending to survey altitude

Looking aft at the NASA Gulfstream V OIB science instruments (ATM lidars left image, CReSIS radars right, and LDEO gravimeter behind the CReSIS radars)
and John Sonntag with his camera in the aft cabin

Icebergs and sea ice southbound

Transition from sea ice to land ice southbound

Detail passing over the edge of the land ice

Crevasses near the ice edge and some blue patches of ice

Snow covered crevasses as we continue south

Some of the hazier conditions today

And the clear conditions up on the plateau

Flying off the ice northbound, there was strong downslope wind causing blowing snow over the edge

A better photo of the blowing snow.

On our northbound leg and at higher altitude, more examples of interesting patterns in the loose-packed sea ice near 63.2 S and 130.7 E