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TeraScan operations onboard US Coast Guard Icebreakers

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Title: TeraScan operations onboard US Coast Guard Icebreakers


1
TeraScan operations onboard US Coast Guard
Icebreakers
  • Polar class icebreakers using Polar orbiting
    satellites

A presentation for the 11th Annual TeraScan
conferenceby Sean McPhilamy, Chief Petty
Officer, US Coast Guard
2
Just back from Deep Freeze 2002
  • POLAR SEA and POLAR STAR have 1.2 meter dish
    systems which receive both NOAA and DMSP polar
    orbiting satellites, along with reception of
    geostationary wefax information.

3
Photo by embarked Aviation Detachment
4
The 1.2 meter dish
Our antennas mount juststarboard of centerline,
on the flying bridge. This offers fairly good
passreception, with the exceptionof some mast
blockage bythe aloft conning tower, andforward
stack.
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Primary uses while underway
  • Ship navigation assistance, through using the
    system as an assist to weather charts and
    forecast info.
  • Sea ice navigation in Polar regions including
    visible, infrared and the DMSPs special
    sensor microwave/imager (ssm/i) data.

7
Often there is tremendous interest inhow weather
may affect the ship
Photo from Seattle PI website
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Additionally, data collection
  • Consistent data collection through large open
    water regions and areas where few reception
    stations exist.
  • Data is collected, catalogued, and archived to
    4mm tapes for transfer to the Arctic and
    Antarctic Research Center (AARC).

13

14
Site specific uses include
  • Worldwide, NOAA satellites allow DCS collection
    and info access.
  • This allows simple deployment confirmation and
    initial tracking of deployed drogue/drift buoys
    and PALACE floats.
  • (more)

15
NOAAs deployed buoys allow tracking of measured
data through large areas over time.
Photo from Seattle PI website
16
Tracking of released NOAA drfter buoysduring
transit from eastern Ross Sea to the southern
tip of Chile.
17
PALACE floats Profiling Autonomous Lagrangian
Circulation Explorer Submersible CTDs which
transmitto NOAA polar orbitersduring average
of 6 hours surfacetime daily.
Photo from SeaBird website
18
Site specific uses also include
  • Antarctic Automated Weather Stations (AWS)
  • Using DCS processes, including McMegu (the
    McMurdo Station engineering units standard) and
    weather as an overlay, we obtain a fairly quick
    picture of the local area of the Antarctic
    continent.

19
Antarctic Automated Weather Station (AWS) The
easy example
Photo from British Antarctic Survey website
20
Antarctic Automated Weather Station (AWS) The
harder example
Photo from Seattle PI website
21
Allows theweather datacollected tobe
graphicallypresented forthe area of interest,
inthis case the ice runwaysfor
McMurdoStation
22
Near Future capabilities include
  • Polar area collection of using SeaWIFs this
    usage helps out with on-site collection of
    this information, an example is the Southern
    Ocean Iron Experiment (SOFeX) which POLAR STAR
    just assisted in. Plankton blooms were tracked
    by SeaWIFs.

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TeraScan operations continue
  • POLAR STAR and POLAR SEA continue to collect data
    with onboard TeraScan systems for trips near both
    poles.
  • This data collection is used near real time
    onboard, and archived for use as identified by
    science need.
  • These operations will continue to augment HEALYs
    work, especially with planned summer trips into
    the Arctic.
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