British Antarctic Survey Twin Otter landing at one of four sea ice camps.

Light-weight mountaineering-style camp at instrument Cluster 3. Camps housed 2-6 people for short periods (1-2 days).

Ice tethered profiler (foreground) and Autonomous Ocean Flux Buoy (background).

British Antarctic Survey Twin Otter preparing to take off from an ice camp.

Springtime deployment of an Ice Mass Balance Buoy, using helicopter support from a nearby MIZ ice camp.

Springtime deployment of an instruments cluster: (L to R) Ice Mass Balance Buoy, Wave Buoy (with two additional instruments lying on the lice near the helicopter) and

and Autonomous Weather Station.

Ice Mass Balance Buoy (foreground) and Wave Buoy (background).

Charging Wave Buoy batteries, with the second Twin Otter (Ken Borek Air) in the background.

Remote Wave Buoy deployment.

Configuring an Ice Mass Balance Buoy.

Unloading a heavy-lift cargo flight.

Seagliders and SWIFT buoys enroute from Prudhoe Bay aboard R/V Ukpik for a July deployment at the ice edge.

Preparing a Seaglider for deployment from the Korean Polar Research Institute’s IBRV Araon.

The Beaufort Sea marginal ice zone in summer, 2014.

Icebow over the MIZ.

Deploying Ice Mass Balance Buoys at the northern end of the array using a Bell Jet Ranger from the IBRV Araon.

Deploying an acoustic navigation beacon through the ice.

Packing up to fly back to the Araon af the end of a long day.

Ice Tethered Profiler deployment from the Korean Polar Research Institute’s IBRV Araon.

Wavebuoy.

The central node of the MIZ array’s northernmost cluster. Autonomous Ocean Flux Buoy (foreground) with an Ice Tethered Profiler being deployed behind. IBRV Araon in

the background.

Ice Tethered Profiler deployment.

Backhauling gear following an Ice Tethered Profiler deployment.

SWIFT float caught in a lead.

Ice-based measurements from the IBRV Araon.

Birds-eye view of the IBRV Araon in the Beaufort MIZ.