Field activities at the SIGMA-A site, northwestern Greenland Ice Sheet, 2017

During spring 2017, we conducted research expeditions to the SIGMA-A site, which is located on the northwestern Greenland Ice Sheet. We maintained an automated weather station (AWS) to enable continuous meteorological observations. We extended 1.5-m long poles of the AWS and replaced two aerovane se...

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Bibliographic Details
Published in:Bulletin of Glaciological Research
Main Authors: MATOBA, Sumito, NIWANO, Masashi, TANIKAWA, Tomonori, IIZUKA, Yoshinori, YAMASAKI, Tetsuhide, KUROSAKI, Yutaka, AOKI, Teruo, HASHIMOTO, Akihiro, HOSAKA, Masahiro, SUGIYAMA, Shin
Format: Article in Journal/Newspaper
Language:English
Published: 日本雪氷学会
Subjects:
Greenland Ice Sheet
automated weather station
ice core
SIGMA-A
Qaanaaq
452
Greenland
Ice Sheet
Online Access:http://hdl.handle.net/2115/73338
https://doi.org/10.5331/bgr.18R01
Description
Summary:During spring 2017, we conducted research expeditions to the SIGMA-A site, which is located on the northwestern Greenland Ice Sheet. We maintained an automated weather station (AWS) to enable continuous meteorological observations. We extended 1.5-m long poles of the AWS and replaced two aerovane sensors, two thermo-hydrometers and an ultrasonic snow gauge. We also drilled an ice core and recovered a core with a total length of 60.06 m, conducted stratigraphic observations, and measured the density of the ice core. In addition, we conducted snow-pit observations and snow sampling, measured the specific surface area of snow using near-infrared reflectance, performed sunphotometry observations, and measured the spectral albedo. To schedule research activities in the field camp and helicopter pick-up flights, we received weather forecasts from the Meteorological Research Institute of Japan through the Internet using a satellite phone every day. We took a male dog to the field camp to alert us to approaching animals.

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