Gulf Fishermen Reel from Seafood Troubles

Discussion in 'Environment' started by catzmeow, May 24, 2012.

  1. catzmeow
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    catzmeow BANNED

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    Gulf fishermen reel from seafood troubles - National Business - MiamiHerald.com

     
  2. Trakar
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    Trakar VIP Member

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    While I've little doubt that the catches, particularly among seafloor product like crabs and shrimp, are affected and impacted by the magnitude of the contaminant marinade these areas were subjected to, these numbers seem a little strange. I seem to recall that these particular areas were already showing declining catches attributed to over-fishing, warming waters and various other environmental impacts. I'm curious as to why they were comparing a single season to the average of the previous four seasons, rather than comparing them directly to the last season or two. There is some preliminary science out on the issue, and I'd be interested in any more current studies you are aware of, but I'm not sure that this AP reporter look at the issue is one to get terribly worked up about.

    "An expert opinion of when the Gulf of Mexico will return to pre-spill harvest status following the BP Deepwater Horizon MC 252 oil spill" - http://media.nola.com/2010_gulf_oil_spill/other/Tunnell-GCCF-Final-Report.pdf
     
  3. westwall
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    westwall USMB Mod Staff Member Gold Supporting Member Supporting Member

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    I agree with the over fishing issue but according to every data set I've seen there has been no measurable warming in the Gulf. Temp swings of 5 to 7 degrees either above or below average are common on a daily basis depending on cloud cover.


    Sea Surface Temperature Daily Composite - IMCS Coastal Ocean Observation Lab
     
  4. catzmeow
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    catzmeow BANNED

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    The fishing shortfalls appear localized to the specific section that was most heavily impacted by the Deepwater well. It's a curious coinkidink.
     
  5. Trakar
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    Trakar VIP Member

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    Which data are you looking at? I don't see support for this in the linked data, but it is a very limited dataset not extensive enough to include climatically relevent data from which to extract such a trending. Have you an acceptable professional journal article reference that supports your understandings? or any compelling data and argument to proffer?
     
  6. Trakar
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    Trakar VIP Member

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    The article you cite doesn't seem to support this interpretation of your reading, indicating that there are numerous factors likely involved, and that the decline seems more general than you appear to be implying. But I may be misunderstanding what you are trying to say, could you clarify and specify your remarks and cite the specific statements that you feel support this understanding?
     
  7. westwall
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    westwall USMB Mod Staff Member Gold Supporting Member Supporting Member

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    Do you have any empirical data sets to support your contention that any of the oceans are warming? Or is all you have based on computer models like 98% of all the AGW alarmist reports?
     
  8. Old Rocks
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    http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1375.html#/affil-auth


    Observed changes in top-of-the-atmosphere radiation and upper-ocean heating consistent within uncertainty
    Norman G. Loeb,
    John M. Lyman,
    Gregory C. Johnson,
    Richard P. Allan,
    David R. Doelling,
    Takmeng Wong,
    Brian J. Soden
    & Graeme L. Stephens
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    Corresponding author
    Nature Geoscience(2012)doi:10.1038/ngeo1375Received 11 August 2011 Accepted 16 December 2011 Published online 22 January 2012



    Global climate change results from a small yet persistent imbalance between the amount of sunlight absorbed by Earth and the thermal radiation emitted back to space1. An apparent inconsistency has been diagnosed between interannual variations in the net radiation imbalance inferred from satellite measurements and upper-ocean heating rate from in situ measurements, and this inconsistency has been interpreted as ‘missing energy’ in the system2. Here we present a revised analysis of net radiation at the top of the atmosphere from satellite data, and we estimate ocean heat content, based on three independent sources. We find that the difference between the heat balance at the top of the atmosphere and upper-ocean heat content change is not statistically significant when accounting for observational uncertainties in ocean measurements3, given transitions in instrumentation and sampling. Furthermore, variability in Earth’s energy imbalance relating to El Niño-Southern Oscillation is found to be consistent within observational uncertainties among the satellite measurements, a reanalysis model simulation and one of the ocean heat content records. We combine satellite data with ocean measurements to depths of 1,800 m, and show that between January 2001 and December 2010, Earth has been steadily accumulating energy at a rate of 0.50±0.43 Wm−2 (uncertainties at the 90% confidence level). We conclude that energy storage is continuing to increase in the sub-surface ocean.
     
  9. Old Rocks
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    http://pubs.usgs.gov/fs/2011/3027/pdf/2011-3027.pdf

    Sea-surface temperature records derived from a sediment core from the Pigmy Basin in the northern Gulf of Mexico and a coral core from Puerto Rico were analyzed for evidence of AMO-like oscillations to determine if these proxy sea-surface temperature records could be used to extend the record of the AMO back in time prior to instrumental measurements. The detailed results of this study were published in December 2009 as part of a special issue of Geo-Marine Letters that documents early results from the Northern Gulf of Mexico (NGOM) Ecosystem Change and Hazard Susceptibility Project (Poore and others, 2009).

    The graph in this paper clearly shows the warming of the Gulf waters.
     
  10. catzmeow
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    The article looked at fishing levels from Texas to Florida. The most drastic decreases in catches are in the areas (waters off of Mississippi, Alabama, and parts of Louisiana) that were most heavily impacted by Deepwater Horizon. Florida had very little impact, as did west Louisiana and Texas.
     

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