This is the official repository for all NSF/PLR Arctic Section data collected via funded grants.
You are required to use this repository for your data until further notice.
If you have any questions, please contact

ACADIS Gateway: An Arctic Data Repository
Register  |  Login
Cookies must be enabled.


SwitchYard Bottle Data

Point of Contact: Hoyle Lee
Description: The focus of this project is on the variability of circulation, water mass properties and freshwater distribution in a region that lies north of the Canadian Archipelago and Greenland, extending from the continental shelf into the central Arctic Ocean. This region is just upstream of the freshwater exit points to the North Atlantic Ocean in Nares Strait and Fram Strait. There is evidence that circulation in this region is highly variable on interannual time scales, which may be tied to large-scale climate signals such as the Arctic Oscillation, and results in variability in the export of fresh water to the North Atlantic. This region is covered by thick ice and is difficult to reach by icebreaker, so aircraft operated out of the Canadian military base at Alert are used to perform an annual hydrographic survey for temperature, salinity and chemical properties in this region of the Arctic Ocean. The backbone of the survey is a line of conductivity, temperature and depth (CTD)/rosette stations extending from the continental shelf to the North Pole taken from Twin Otter aircraft using a modular CTD/rosette system that is lowered through a 12" diameter hole drilled in the sea ice. This system is also used to take a few stations east and west of the line, time permitting. Up to 12 water samples are collected at each station between the surface and about 700 m depth. CTD only stations are taken by helicopter and Twin Otter aircraft to provide broader spatial coverage of the region and finer spatial resolution at the continental slope. A single water sample at 1-2 m depth is taken at each of these stations. The continental shelf to North Pole section is carried out by Lamont-Doherty Earth Observatory and the broader scale survey by the University of Washington. This survey is closely coordinated with the Twin Otter survey carried out by the North Pole Environmental Observatory program each year.
Progress: Completed - Dataset fully collected/analyzed.
Time Coverage: Sep 2, 2004 - Dec 31, 2012
Northernmost Latitude: 90
Southernmost Latitude: 82
Westernmost Longitude: -62.338
Easternmost Longitude: -16.785
Topic: Ocean and Sea Ice
Science Keywords: Oceans > Ocean Circulation > Water Masses
ISO Topic(s): oceans
Time Frequency(ies): Hourly to Daily
Location(s): Arctic Ocean
Resolution(s): 30 Meters to 100 Meters
Data Type(s): Station
Platform(s): Aircraft
Instrument(s): Spectrometers/Radiometers > NET RADIOMETERS
Data Format(s): Microsoft Excel spreadsheet
Language: English
Date Created:2012-11-09 15:23:36
Date Last Updated:2015-02-05 10:49:56
Data Center: Advanced Cooperative Arctic Data and Information Service
More Like This Dataset: Switchyard LDEO CTD data
Switchyard moored CT data
Switchyard UW CTD data
Sea Ice Motion in the Arctic Ocean Switchyard
Artifact Inventory, Phase II Investigations, Washington Navy Yard

Download Files - View and download individual files for this Dataset. 16 Files

Download Zip Archive - Download all the files from this dataset in a Zip archive. 16 Files

Download Wget Script - A Wget shell script that will download all files for this dataset. 16 Files