Station TC139m

This station was constructed in August 2004, using the same instruments as the JJMC_EAST station, which had falled over. The intent behind TC139m was to better understand the spatial differences in accumulation and ablation in the upper cirque. This station is located only a few meters from a 10 m firn core, where we found the deepest firn accumulation in the basin (using GPR and drilling). This station is co-located with an onset micrologger station that has two air temperatures and to ice temperatures. Ultimately this site will become the main accumulation area weather station and have a deep thermistor string, as this is likely the best target for a deep core. The station name comes from this site being 139m up glacier from the 20 m core site in May 2004, as measured by Shuhei. Note that this station is also commonly known as the TC138m station.

Overview

Program August 2004 -
Wiring diagram August 2004 -

August 2004

Notes:
- CR10X S/N 19138
- SR50 S/N1947: 1.8 m above snow
- REBS net radiometer S/N 98282 (calibration - Top: 9.39, Bottom: 11.40): 1.90 m above snow
- 10 W solar, 35 Ah battery
- verified date and time are correct
- structure based on CORE met design (two main poles 6m long, with tetra-type crossbracing)
- running on 14 Aug 04

Note the CORE station near the center of the frame, about 140 m downglacier.