Five-minute average cruise track and ship velocity of the Antarctic Circumnavigation Expedition (ACE) undertaken during the austral summer of 2016/2017.
- 1. Extreme Environments Research Laboratory, Ecole Polytechnique Federale de Lausanne, School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland
- 2. Swiss Polar Institute, Switzerland
Contributors
Contact person:
Data curator:
Data manager:
Researcher:
- 1. Extreme Environments Research Laboratory, Ecole Polytechnique Federale de Lausanne, School of Architecture, Civil and Environmental Engineering, Lausanne, Switzerland
- 2. Swiss Polar Institute, Switzerland
Description
Dataset abstract
The ship's cruise track, velocity, course over ground and heading at one-minute resolution for all five legs of the Antarctic Circumnavigation Expedition (ACE) are derived from a combination of:
- the latitude/longitude record of the Quality-checked, one-second cruise track for 21.12.2016 to 11.04.2017.
- the latitude/longitude record of the Uncorrected inertial navigation dataset (one-second resolution) for 27.11.2016 to 21.12.2016
- the latitude/longitude record of the raw meteorological data (30-second resolution) from 17.11.2016 to 27.11.2016
- where no latitude/longitude record at one-second resolution is available and the ship's velocity was above 2 meters per second, the three-second resolution record of the true and relative wind speed and direction, as well as the heading are used to re-calculate the ship's velocity under the assumption that the course of the ship equalled the heading.
Basic filtering are applied to remove erroneous observations before the data are averaged to a one-minute resolution (DOI: 10.5281/zenodo.3752667).
The one-minute time series are averaged to five-minute resolution, whereby the vector averaging is used for the platform velocity and orientation.
For the latitude and longitude coordinates a simple average is calcualted, i.e., ignoring the curvature of the Earth.
Short stretches of missing coordinates are filled with linear interpolation between neighbouring observations.
Dataset contents
- cruise-track-5min-legs0-4.csv, data file, comma-separated values
- data_file_header, metadata, text format
- README.txt, metadata, text format
- ace-cruise-track-5min-legs0-4-change-log.txt, metadata, text format
Change log
v1.1 - Added additional data coverage from 2016-11-17 - 2016-11-22 inclusive. Updated README.txt with information about data coverage. Added this change_log file.
v1.0 - Initial release of averaged cruise track data set.
Dataset license
This five-minute averaged cruise track and velocity dataset is made available under the Creative Commons Attribution 4.0 International License (CC BY 4.0) whose full text can be found at https://creativecommons.org/licenses/by/4.0/