Australia's Census of Antarctic Marine Life project - IYGPT Data collected on the CEAMARC cruiseEntry ID: CEAMARC-200708_V3_IYGPT
Abstract: Australia's Census of Antarctic Marine Life project.
This project is a part of the international "Census of Antarctic Marine Life" (CAML) which was conducted during the International Polar Year. It was a collaborative contribution by Australia and France to understand the biodiversity of the oceans surrounding Antarctica, with particular emphasis on the fishes of the eastern part of the ... Australian Antarctic Territory. The biodiversity data, when added to that obtained by all other nations participating in the CAML, serves as a robust reference for future examinations of the health of the Southern Ocean, and assists in the conservation and management of the region.
Field sampling for this project was undertaken in the 2007/08 season, commencing in December and finishing in February 2008. Three ships surveyed the area with a range of traditional and modern sampling gear, including IYGPT (International Young Gadoid Pelagic Trawl (marine science equipment)) gear.
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This data set description is a member of a collection. The collection is described in
Start Date: 2007-12-17Stop Date: 2008-01-26
ISO Topic Category
The AVHRR sensor was designed to view cold space and one or more
internal warm blackbodies for each scan sequence while in orbit. In
general, radiometric calibration involves exposing a radiometer to
sources of radiation that have been calibrated against primary or
secondary standards and determining a ... relationship between the output
of the radiometer and the intensity of the incident radiation
(radiance). All of the radiometers flown on the NOAA/TIROS satellites
undergo extensive prelaunch testing and calibration by their
manufacturers to characterize their performance. The NESDIS
independently analyzes the data from the prelaunch tests to determine
the operating characteristics of the instruments, such as their
signal-to-noise ratios, stability, linearity of response, and
sensitivity. However, characteristics cannot be expected to be the
same in orbit as they were before the launch. One reason is that the
thermal environment varies with position in the orbit, causing
sensitivities to vary orbitally. Also, instrument components age in
the several years that usually elapse between the time of the
prelaunch tests and launch, and the aging process continues during the
two or more years the instrument typically operates in orbit.
Therefore, the NOAA/TIROS radiometers have been designed to view cold
space and one or more internal warm blackbodies as part of their
normal scan sequences in orbit.
As the spacecraft moves through its orbit, the expected angular
distance between the nadir of adjacent LAC/HRPT scans is approximately
0.0296 degrees of arc, or 3.2914 kilometers, as measured from the
center of Earth. The actual value of the average angular distance
can vary by up to about 0.1712 kilometers due to variations in
satellite height, scan angle, and other factors. The instantaneous
field-of-view (IFOV) for all channels is specified to be 1.3 +/- 0.1
Access Constraints None
Use Constraints There is no guarantee of warranty concerning the accuracy of these data. Users should be aware that temporal changes may have occurred since the data was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of their limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data set is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data set, nor to imply that changes made were approved or endorsed by the U.S. Geological Survey. Please refer to http://www.usgs.gov/privacy.html for the USGS disclaimer.
Data Set Progress
Distribution Media: FTP
Distribution Size: Approx 35 MB per file
Distribution Format: HDF-EOS5
KNMI P.O.Box 201
City: De Bilt
Province or State: AE
Postal Code: 3730
Role: DIF AUTHOR
Role: TECHNICAL CONTACT
Email: Suraiya.Ahmad at nasa.gov
NASA Goddard Space Flight Center Code 610.2
Province or State: MD
Postal Code: 20771
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Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2012-02-16
Last DIF Revision Date: 2013-04-29