Arctic currents query

Greetings,       
         
        I have been reading, as time permits (ie. slowly), various
        articles surrounding my earlier queries(1) regarding changes
        in Arctic weather patterns.      
                                              
        A 1990 article(2) by Broecker and Denton discusses many factors,
        among them changes in ocean currents -- the 'conveyor belt'. 
        It finishes with the following curious wonderment.
        
        "Just as 14,000 years ago the earth was feeling the gradual 
        forcing effect of stronger northern summers, so now it is 
        subject to gradual forcing as human activity releases carbon
        dioxide and other greenhouse gases into the atmosphere.  Will
        the climate system again respond abruptly, by flipping to an 
        entirely new mode?"
        
        This got me to thinking about Arctic currents.  The articles 
        I have seen all talk about Glacial and Inter-Glacial ocean
        currents.       What will Non-Glacial ocean currents be? (3)
        In particular, what will the Arctic circulation patterns be?
        I am wondering about a mode the other side of a THC style 
        shutdown. 

        The geometry will be unchanged except for that due to ocean 
        level increases.  If the primary drivers are salinity and 
        temperature, how will that change?
    
        Will the Arctic become more saline or less? (4)

        Is there any possibility of circum Greenland circulation?

        Can Bering Straits (with the projected change in sea level)
        allow a climatologically significant flow of water.
        
        Is there any possibility of a North Atlantic to Northern
        Pacific (through the Arctic) circulation?
        
        Has anybody modelled this scenario? (3)
<regards>
-het
                                              
                                              
        PS.                                           
        1) <news:[EMAIL PROTECTED]>
           <news:[EMAIL PROTECTED]>

        2) What Drives Glacial Cycles by W.S. Broecker and 
                G.H. Denton, Scientific American, January 1990. 
       
        3) If we consider (for the sake of argument), a 500 year time
                scale with a global average temperature increase of 8C, the
                Greenland glacier will be gone and good part of Antarctica.
                The oceans will have risen 

        4) I take it this question is equivalent to what will be 
                the new patterns of evaporation and precipitation?
                How much water will evaporate from the Arctic ocean
                compared to how much tropical rain will fall in 
                the Arctic watershed?



-- 
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