Science Keywords>LAND SURFACE
Visual Flight RulesTerminal Area Charts, CanadaEntry ID: Canada_ACS_VTA
Abstract: VFR Terminal Area charts (VTA) provide detailed information in, and around,
major centres in Canada. The five charts of the series cover Toronto, Montreal,
Vancouver, Winnipeg, with Calgary and Edmonton combined on one chart.Used by
pilots for visual flight reference.
Spatial Data Organization Information -
Indirect Spatial Reference: Radio navigation aid ... indicators, Airspace
Direct Spatial Reference: Point
Raster Object Type:
Spatial Reference Information -
Horizontal Coordinate System Definition -
Planar Coordinate Encoding Method:
Distance and Bearing Representation:
Bearing Reference Direction:
Bearing Reference Meridian:
Planar Distance Units:
Horizontal Datum Name: North American Datum 1983
Ellipsoid Name: World Geodetic System 1984
Denominator of Flattening Ratio:
(Click for Interactive Map)
Data Set Citation
Dataset Originator/Creator: Government of Canada, Natural Resources Canada, Aeronautical and Technical Services
Dataset Title: Visual Flight RulesTerminal Area Charts, Canada
Dataset Series Name: A.I.P. Canada (MAP)
Dataset Release Place: Ottawa, Ontario, Canada
Dataset Publisher: Government of Canada, Natural Resources CanadaOnline Resource: http://ess.nrcan.gc.ca/ats-sat/index_e.php
Start Date: 2004-10-19
Quality The date provided in temporal coverage is approximate only, and represents the beginning of the 2004/2005 season at Casey Station.
Taken from the 2009-2010 Progress Report:
Day trips to Jack's Donga and onto sea-ice were performed every 3 days for measurements of light transfer through sea ice and ice core sampling: 1 day of initial ... field set up and testing (11 Nov) , and 6 days of field sampling :
Sampling day S0 S1 S2 S3 S4 S5 S6
Date 11/11/09 14/11/09 17/11/09 20/11/09 23/11/09 29/11/09 03/12/09
The following procedure was followed each sampling day:
- Preparation and set-up: An initial hole was drilled through the sea-ice. On days S0 and S1 this was done using a manual SIPRE ice corer. On the following days this was done using a motor-powered ice corer (Lannuzel, Trull 3026), on a new site approx. 100m offshore. Downwelling PAR was recorded (LiCor light sensor) as well as air temperature. Cross calibration of the two spectral systems (spectrometer + optical fibre +cosine corrector) was obtained by a simultaneous measure of above-ice spectral downwelling irradiance with the two systems.
- Surface albedo: The orientation of one fibre was then inverted pointing downward, and a simultaneous measure of downward and upward spectral irradiance was performed.
- In situ optical transmission measurement: Simultaneous above and under ice spectral transmission was measured between 300-850 nm, using 2x [Ocean optics USB2000 + 10m fibre optic + cosine corrector]. A fibre optic was attached to an underwater mechanical arm and inserted under the ice and positioned 2 m away from the hole. The second fibre optic was maintained at ~ 2m above the surface and pointing upwards.
- Ice core collection for profiles of spectral attenuation, particulate and dissolved absorption: Cores were cut using the manual SIPRE ice corer, divided into 5- 20 cm sections, sheltered from sunlight and transported back to Casey station for further analysis.
- Spectral attenuation profiles: This was performed immediately upon return to the station after field sampling (~2 after collection). A Schott lamp (400-750nm) equipped with a fibre optic and collimating lens provided irradiance at one end of the tubes, and spectral irradiance was measured at the other end of the ice core section using the ocean optics spectrometer+ fibre optic+ cosine corrector. Light transmission through each ice core section was measured twice, inside a black and a silver coated tube.
Each field day was followed by 2 days on Station for lab processing of ice core samples. Core sections not used for the spectral transmission measurements were melted overnight in the dark at 5 degrees C.
- Particulate absorption: For each 20 cm section of melted sea ice, 200- 500 ml were melted onto 25mm GF/F filter for particulate absorption measurement. Phytoplankton fraction was extracted using methanol and the measurement was repeated for de-pigmented particle absorption ( detritus).
- Pigment analysis: The same volume as above was filtered onto a second GF/F filter, immediately placed in cryovial and stored at -80 degrees C for shipping back to Sydney and HPLC pigment analysis (storage in freezer, no liquid nitrogen available).
- CDOM absorption: 100 ml was filtered through 0.2 um polycarbonate filter, the filtrate was placed into 10cm quartz cuvette for CDOM absorption measurement onto spectrophotometer.
- Total suspended matter: 200-500 ml were filtered onto pre-combusted, pre-weighed GF/F filter, dried at room temperature for a few days and the dry mass measured.
- 15 ml was preserved in lugols from the darkly pigmented bottommost layer of ice, and shipped back to Sydney for taxonomic determination.
Access Constraints These data are publicly available for download from the provided URL. Three spreadsheets and a readme document are part of the download file.
Use Constraints This data set conforms to the PICCCBY Attribution License (http://creativecommons.org/licenses/by/3.0/).
Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2518 when using these data.
Data Set Progress
Distribution Media: HTTP
Distribution Size: 133 kb
Distribution Format: csv, rtf, xlsx
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Phone: +61 3 6266 2980
Fax: +61 3 6226 2973
Email: Andrew.McMinn at utas.edu.au
Institute of Antarctic and Southern Ocean Studies University of Tasmania Private Bag 77
Province or State: Tasmania
Postal Code: 7001
Pankowski, A. McMinn, A. (2009), Iron availability regulates growth, photosynthesis and production of ferredoxin and flavodoxin in Antarctic sea ice diatoms., Aquatic Biology, 4, 273-288, doi:doi: 10.3354/ab00116
Pankowski, A., McMinn, A. (2009), Development of immunoassays for the iron- regulated proteins Ferredoxin and flavodoxin in polar microalgae., Journal of Phycology, 45, 771-783, doi:DOI: 10.1111/j.1529-8817.2009.00687.x
McMinn, A., Pankowski A., Ashworth C, Bhagooli R., Ralph P., Ryan K. (2010). In situ net primary productivity and photosynthesis of Antarctic sea ice algal, phytoplankton and benthic algal communities. Marine Biology
Cheah, W., McMinn A, Griffiths B, Westwood KJ, Webb J, Molina E, Wright SW, van den Enden R. (in press) Assessing Sub-Antarctic Zone primary productivity from fast repetition rate fluorometry. Deep Sea Research Part II.
Creation and Review Dates
DIF Creation Date: 2005-03-02
Last DIF Revision Date: 2012-05-01