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 support@aoncadis.org.

ACADIS Gateway: An Arctic Data Repository

Dataset


ERROR
Cookies must be enabled.

Switchyard LDEO CTD data

Point of Contact
Michael Burek
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 obtain data and water samples by lowering a conductivity temperature depth (CTD) and a small diameter modular rosette through a hole drilled in the ice. Annual hydrographic surveys are carried out using two types of aircraft, a helicopter to obtain close spaced stations across the shelf break and down the continental slope using only a CTD (University of Washington) and a twin otter fixed wing aircraft to obtain courser spaced stations with a CTD/rosette system in the interior (Lamont-Doherty Earth Observatory). The backbone of the survey is a line of stations extending from the continental shelf to the North Pole and stations are taken to the east and west of this line, time permitting. This survey is closely coordinated with the twin otter survey carried out by the North Pole Environmental Observatory program each year. The Lamont-Doherty Earth Observatory measurements are reported here. A Seabird SBE-19 CTD with a SBE-43 oxygen sensor was used to obtain the measurements. Data include pressure, depth, in situ temperature, potential temperature, salinity, density and dissolved oxygen.
Progress
Completed - Dataset fully collected/analyzed.
Time Coverage
Sep 2, 2004 - Dec 31, 2012
Northernmost Latitude
90
Southernmost Latitude
82
Westernmost Longitude
-109.987
Easternmost Longitude
-16.785
Topic
Ocean and Sea Ice
Science Keywords
Oceans > Ocean Circulation > Water Masses
ISO Topic(s)
oceans
Location(s)
Arctic Ocean
Resolution(s)
Less than 1 Meter
Data Type(s)
Station
Platform(s)
Aircraft
Instrument(s)
Profilers/Sounders > CTD > Conductivity, Temperature, Depth (Conductivity, Temperature, Depth)
Data Format(s)
Other ASCII
Language
English
Date Created
2012-11-09 14:26:52
Date Last Updated
2015-11-30 07:22:45
Data Center
Advanced Cooperative Arctic Data and Information Service
More Like This Dataset
SwitchYard Bottle Data
Switchyard moored CT data
Switchyard UW CTD data
Sea Ice Motion in the Arctic Ocean Switchyard
A Modular Approach to Building an Arctic Observing System for the IPY and Beyond in the Switchyard Region of the Arctic Ocean

Download Files - View and download individual files for this Dataset. 147 Files

Download Zip Archive - Download all the files from this dataset in a Zip archive. 147 Files

Download Wget Script - A Wget shell script that will download all files for this dataset. 147 Files