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Massive cold region in the North Atlantic Ocean

  1. Jun 5, 2010 #1

    Can anyone explain to me the cause of this massive cold water region in the north atlantic.

    Is it winds stirring up cold deep water (ekman wind?)

    Is it a natural variation in currents bringing colder water to the surface?

    Is there any relationship to the regions north and south of it being warmer?
  2. jcsd
  3. Jun 5, 2010 #2


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    No idea, but the first thought that came to mind was, how deep is the ocean in those cold spots?
  4. Jun 6, 2010 #3


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    Don't know, but it's worth keeping in mind that the map shows temperature anomaly, not temperature. It shows how much colder or warmer an area was on the 5th of june compared to the average (what average I don't know...)

    It could be as simple as an area of unusually persistent cloud cover keeping sunlight off the water so allowing it to cool a few degrees.
  5. Jun 8, 2010 #4


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    That map is misleading, since the zero is a color as opposed to being a neutral gray or white.
    Compare it to the NCDC map:

    http://www.ncdc.noaa.gov/oa/climate/research/sst/weekly-sst.php [Broken]

    You'll see that while their is a cold region in the Atlantic, it's dwarfed by several larger warm area.

    Also consider that in April the global sea surface temperature was at a record high for the month.

    The cold region is probably caused by weather conditions. Not sure how long it will persist, but it hasn't been there for a long term climatologically.
    Last edited by a moderator: May 4, 2017
  6. Jun 8, 2010 #5


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    Can you provide the url for the page where this appears?

    And how does the date stamp make any sense?

    EDIT: I guess it's possible the same url is used for updated images?

    EDIT 2: Yes, it is.
    Last edited: Jun 8, 2010
  7. Jun 10, 2010 #6
  8. Jun 11, 2010 #7


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    Paul, thanks for the response. I know what the url for the image itself is. I was looking for the url for a page where that image appears within context - a page with some discussion of the dataset/analysis.

    This is the page: http://weather.unisys.com/surface/sst_anom.html

    But unfortunately, there is no discussion there.
  9. Jun 11, 2010 #8


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    This might explain it.

    The image referenced is the cold water anomaly in the North Atlantic Ocean.

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