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  • Pawnfart
    Methanogens found mostly where there are methane hydrate feilds? See:
    Message 1 of 702 , Jan 6, 2002
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      Methanogens found mostly where there are methane
      hydrate feilds? See:
      <a href=http://woodshole.er.usgs.gov/project-pages/hydrates/where.html target=new>http://woodshole.er.usgs.gov/project-pages/hydrates/where.html</a><br><br>A methanogen is a haleo-bacteria. The are very old
      from an evolutionary standpoint and lack "introns",
      which is a part of the genetics that actually takes
      some time for cell division. This is significant
      because methanogens can very rapidly reproduce
      themselves.<br><br>They live in gastrointestines but the ones interesting
      from a climate standpoint are in the hydrate fields?
      <br><br>Some scientists are concerned about methane in the
      air. I know I was initially in studying climate.
      However, the hydrates would have to melt, then the methane
      would have to not dissolve in the oceans or be consumed
      by aerobic creatures, and then, once in the air, it
      oxydizes in the ionosphere very quickly, having a life of
      no more than 8 years. Hence, any green house gas
      impact would have to take place quickly, even as it is a
      very powerful green house gas--20 times more powerful
      than CO2. Finally, as a green house gas its impact
      would be global and not regional, so it wouldn't be
      able to modulate chemistry of the oceans.<br><br>How
      they are important to climate, in my view, is how they
      alter the electrical dynamic of the earth and hence how
      cirrus clouds behave. Melting ice sheets in Antartica,
      for instance, won't necessary melt the hydrates in
      the deep oceans there, but I would note that the
      recent NAS report on climate extremes on page 84
      described how merely varying ocean currents could cause
      hydrate fields to become unstable--with a 5 degree C deep
      ocean temperature change.
    • b1blancer_29501
      On Feb 28th, the Interplanetary Magnetic Field swung to a strong south-pointing orientation. That, coupled with an elevated solar wind speed and density,
      Message 702 of 702 , Mar 1, 2002
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        On Feb 28th, the Interplanetary Magnetic Field
        swung to a strong south-pointing orientation. That,
        coupled with an elevated solar wind speed and density,
        triggered a G-1 class geomagnetic storm. The result was
        some high latitude aurora. See this link for a
        photgraph of aurora observed over Quebec :
        <a href=http://www.spaceweather.com/aurora/images/01mar02/Moussette2.jpg target=new>http://www.spaceweather.com/aurora/images/01mar02/Moussette2.jpg</a> . As of right now, there are 3 sunspot regions,
        namely 9839, 9842, and 9845, that appear to be capable
        of producing M-class flares. Regions 9839 and 9842
        are close to rotating out of view over the western
        limb of the solar disk. Sunspot region 9845, however,
        is close to the sun's central meridian. A rather
        large coronal hole is also approaching the sun's
        central meridian, and coming into an Earth-pointing
        position. High speed colar wind gusts are likely around the
        first of next week.<br><br>The current solar and
        geomagnetic conditions are :<br><br>NOAA sunspot number :
        153<br>SFI : 188<br>A index : 10<br>K index : 1<br><br>Solar
        wind speed : 372.3 km/sec<br>Solar wind density : 4.4
        protons/cc<br>Solar wind pressure : 1.1 nPa<br><br>IMF : 8.4
        nT<br>IMF Orientation : 0.7 nT North<br><br>Conditions for
        the last 24 hours : <br>Solar activity was low. The
        geomagnetic field was quiet to unsettled. Stratwarm Alert
        exists Friday.<br><br>Forecast for the next 24 hours
        :<br>Solar activity will be low to moderate. The geomagnetic
        field will be quiet to unsettled.<br><br>Solar Activity
        Forecast :<br>Solar activity is expected to be low to
        moderate for the next three days. Region 9845 is a
        possible source for isolated M-class
        flares.<br><br>Geomagnetic activity forecast :<br>Geomagnetic field activity
        is expected to be mainly quiet to unsettled, until
        the onset of high speed stream effects from a
        recurrent coronal hole begin to develop by day three of the
        forecast period. Isolated active conditions are
        anticipated thereafter.<br><br>Recent significant solar flare
        activity :<br>None
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