These data were collected by 8 EM-APEX profiling floats, which are a sophisticated version of the standard Argo float. They measure temperature, salinity and pressure, as for standard Argo. They also use electromagnetic techniques to measure horizontal velocity. The floats were deployed across the northern Kerguelen Platueau in November 2008, and drifted eastward with the Antarctic Circumpolar Current as they profiled between the surface and 1600 dbar. They transmitted data through the Iridium satellite system and continued to profile eastward until their batteries failed. The range of latitudes covered is approx. 40S-50S, and longitudes 65E-90E. Although most of the data is in the longitude band 65E-78E. The temporal range of the data is Nov 2008 to approx. Sep 2009. The file "emapex_final.mat" contains the quality-controlled and calibrated data from 8 EM-APEX profiling floats deployed across the northern Kerguelen Plateau during the Southern Ocean Finestructure (SOFine) experiment aboard the U.K. RRS James Cook, Cruise 29, 1st Nov-22nd Dec 2008, Cape Town to Cape Town. Funding for the EM-APEX component of the experiment was from the Australian Research Council Discovery Project DP0877098 (N. Bindoff, H. Phillips and S. Rintoul). The Australian Antarctic Division provided subantarctic clothing for Bindoff and Phillips under AAS project #3002 (H. Phillips and N. Bindoff). AAS project #3228 (N. Bindoff and H. Phillips) provided $27,000 for salary support for a research assistant to work on analysis of the data and publication of a manuscript. Significant in-kind support was provided by CSIRO Marine and Atmospheric Research for the EM-APEX component. Details of the shipboard operations and deployment of the EM-APEX floats can be found in the document "emapex_deployment_report.pdf". The complete voyage report is available from h.e.phillips@utas.edu.au. It may be cited as Naveira Garabato, A.; Bindoff, N.; Phillips, H.; Polzin, K.; Sloyan, B.; Stevens, D. and Waterman, S. RRS James Cook Cruise 29, 01 Nov - 22 Dec 2008. SOFine Cruise Report: Southern Ocean Finestructure National Oceanography Centre, Southampton, 2009 See the download file for more information, which contains a data report and a data description file as well as the data.

Metadata record for data from ASAC Project 2519 See the link below for public details on this project. This dataset comprises of floating buoy data collected as part of the ARGO program. All of the data are automatically uploaded to the main ARGO data centre, and can be accessed from there (via the provided URL). Above the map of current float locations on this web page, there are buttons to allow you to access an interactive map, search for floats, and access the data. The Argo floats are programmed to measure temperature and salinity profiles from 2000m to the sea surface every 10 days. When they surface they transmit the profile data, their location, and various engineering parameters to satellite. The data ares put on the Global Telecommunications System (GTS) and are available within 24 hours. Global data centres in the USA and France receive the raw data from the country of origin and also update the data when quality control is performed. Some floats measure other data in addition to temperature and salinity. Dissolved oxygen and current velocity are two other parameters that are measured by a few floats. See the ARGO website for further details about each float (information can be accessed using the WMO (World Meteorological Organisation) numbers provided in the download file). The fields in this dataset are: Launch Date Latitude Longitude ARGO Number WMO Number Webb Number Deployment Order Number More information about the dataset is provided in a readme file as part of the download. Data were last updated in early May, 2014.

The International Programme for Antarctic Buoys (IPAB) is run by the World Climate Research Programme (WCRP). IPAB is a self-sustaining project of the WCRP, and provides a link between institutions with Antarctic and Southern Ocean interests. IPAB was formally established, following a one year pilot phase, at a meeting in Helsinki, Finland in June 1994. IPAB aims to establish and maintain a network of drifting buoys in the Antarctic sea-ice zone, which monitor ice motion, pressure and temperature. In 1997, 16 organisations, representing 11 countries, were involved in the IPAB programme, including: Alfred Wegener Institute, Antarctic CRC, Australian Antarctic Division, British Antarctic Survey, Commonwealth Bureau of Meteorology, INPE -National Institute for Space Research, Institute for Marine Research and University of Helsinki, Hydrographic Department, Maritime Safety Agency, National Ice Center, National Institute of Polar Research, Programma Nazionale di Ricerche in Antardtide, Scott Polar Research Institute, Service Argos, South African Weather Bureau, United Kingdom Meteorological Office, and World Data Center A Glaciology. Tables of data availability, information, experiment details, literature, and data sets are available from the IPAB home page. Links are also available to databases held by other organisations, and links to Arctic and Indian Ocean buoy databases. The data are available via several provided URLs. Further information and the data can be obtained from the IPAB home page URL. The data and documentation are also available directly from the NSIDC website. Finally, an older copy of the data are also held locally on the Australian Antarctic Data Centre's servers. The documentation held at the NSIDC website provides important information on interpreting the dataset. A static copy of this document is included with the local copy of the dataset held on the Australian Antarctic Data Centre's servers. Data from January 1995 to July 1998 only has been made available on the NSIDC website (and correspondingly on the AADC's servers). The Australian subset contains data from drifting buoys that are along the ice edge or frozen into the ice. The data were observed around the Australian sector of Antarctica and recordings began in February 1985. Observations exist for around 20 buoys over this area and are not continuous over this area for this time period. Data from the period 1995-1998 only have been archived. This work was also completed as part of ASAC projects 732, 742 and 2678. The fields in this dataset are: Buoy Number Year Time Longitude Latitude ARGOS Positional Accuracy Sea Ice Flag Air Pressure Air Temperature Water Temperature Velocity

More than 50 scientists from eight countries conducted the Sea Ice Physics and Ecosystem eXperiment 2012 (SIPEX-2). The 2012 voyage built on information and observations collected in 2007, by re-visiting the study area at about 100-120 degrees East. This was the culmination of years of preparation for the Australian Antarctic Division and, more specifically, the ACE CRC sea-ice group who lead this international, multi-disciplinary, sea ice voyage to East Antarctica. Work began at the sea-ice edge and penetrated the pack ice towards the coastal land-fast ice. The purpose of SIPEX-2 was to investigate relationships between the physical sea-ice environment, marine biogeochemistry and the structure of Southern Ocean ecosystems. While the scientists and crew did not set foot on Antarctic terra firma, a number of multi-day research stations were set up on suitable sea ice floes, and a range of novel and state-of-the-art instruments were used. These included: A Remotely Operated Vehicle (ROV) to observe and film (with an on-board video camera) krill, and to quantify the distribution and amount of sea ice algae associated with ice floes. An Autonomous Underwater Vehicle (AUV) to study the three-dimensional under-ice topography of ice floes. Helicopter-borne instruments to measure snow and ice thickness, floe size and sea ice type. Instruments included a scanning laser altimeter, infrared radiometer, microwave radiometer, camera and GPS. Sea ice accelerometer buoys to measure sea ice wave interaction and its effect on floe-size distribution. Customised pumping systems and light-traps to catch krill from below the ice and on the sea floor. Available at the provided URL in this record, is a link to a file containing the locations of all ice stations from this voyage.