Wyatt earp
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- Apr 21, 2012
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Check out this part of the story...
Seas arenāt just rising, scientists say ā itās worse than that. Theyāre speeding up.
The problem, or even mystery, is that scientists havenāt seen an unambiguous acceleration of sea level rise in a data record thatās considered the best for observing the problem ā the one that began with the TOPEX/Poseidon satellite, which launched in late 1992 and carried an instrument, called a radar altimeter, that gives a very precise measurement of sea level around the globe. (It has since been succeeded by other satellites providing similar measurements.)
This record actually shows a decrease in the rate of sea level rise from the first decade measured by satellites (1993 to 2002) to the second one (2003 to 2012). āWeāve been looking at the altimeter records and scratching our heads, and saying, āwhy arenāt we seeing an acceleration in the satellite record?ā We should be,ā said John Fasullo, a climate scientist at the National Center for Atmospheric Research in Boulder, Colorado.
In a new study in the open-access journal Scientific Reports, however, Fasullo and two colleagues say they have now resolved this problem. It turns out, they say, that sea level rise was artificially masked in the satellite record by the fact that one year before the satellite launched, the Earth experienced a major cooling pulse.
Seas arenāt just rising, scientists say ā itās worse than that. Theyāre speeding up.
The problem, or even mystery, is that scientists havenāt seen an unambiguous acceleration of sea level rise in a data record thatās considered the best for observing the problem ā the one that began with the TOPEX/Poseidon satellite, which launched in late 1992 and carried an instrument, called a radar altimeter, that gives a very precise measurement of sea level around the globe. (It has since been succeeded by other satellites providing similar measurements.)
This record actually shows a decrease in the rate of sea level rise from the first decade measured by satellites (1993 to 2002) to the second one (2003 to 2012). āWeāve been looking at the altimeter records and scratching our heads, and saying, āwhy arenāt we seeing an acceleration in the satellite record?ā We should be,ā said John Fasullo, a climate scientist at the National Center for Atmospheric Research in Boulder, Colorado.
In a new study in the open-access journal Scientific Reports, however, Fasullo and two colleagues say they have now resolved this problem. It turns out, they say, that sea level rise was artificially masked in the satellite record by the fact that one year before the satellite launched, the Earth experienced a major cooling pulse.