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Á¦ÁÖ ´ëÇб³ º¼´õºí·ç(University of Cololado Boulder, CU Boulder)ÀÇ ´Â ³²±Ø ÀÎõ ÇØ¿ªÀǵµ°¡ ±Ý¼¼±â ¸»±îÁö 2¹è·Î Áõ°¡ÇØ ³²±Ø¿¡ ¼öÃâÇÏ´Â °ÍÀº, °°Àº ±âŸ ¼ö¹é Á¾ÀÇ Á¾ÀÇ µ¿¹°À» ÇÒ ¼ö ÀÖÀ» ¼ö ÀÖ´Ù´Â ¿¬±¸¸¦ Çß½À´Ï´Ù. ±×·¨´Ù.  [»çÁøÃâó(»çÁø Ãâó) = ÇȻ纣ÀÌ(Pixabay)]

Á¦ÁÖ ´ëÇб³ º¼´õºí·ç(University of Cololado Boulder, CU Boulder)ÀÇ ´Â ³²±Ø ÀÎõ ÇØ¿ªÀǵµ°¡ ±Ý¼¼±â ¸»±îÁö 2¹è·Î Áõ°¡ÇØ ³²±Ø¿¡ ¼öÃâÇÏ´Â °ÍÀº, °°Àº ±âŸ ¼ö¹é Á¾ÀÇ Á¾ÀÇ µ¿¹°À» ÇÒ ¼ö ÀÖÀ» ¼ö ÀÖ´Ù´Â ¿¬±¸¸¦ Çß½À´Ï´Ù. ±×·¨´Ù. [»çÁøÃâó(»çÁø Ãâó) = ÇȻ纣ÀÌ(Pixabay)]

 

¹Ì±¹ÀÇ ¸ÞÀÌÀú ´ëÇÐ º¼´õÈǸ¢(University of Cololado Boulder, CU Boulder)ÀÇ °ÍÀº ³²±Ø ÀÎõ ÇØ¿ªÀÇ µµ°¡ ±Ý¼¼±â ¸»±îÁö µÎ ¹è·Î Áõ°¡ÇØ ³²±ØÇØ¿¡ ¼­½ÄÇÏ´Â °í·¡, ¼Ò¼ö ¹× ±âŸ Á¾Á·ÀÇ µ¿¹°À» ãÀ» ¼ö ÀÖ´Ù´Â ¿¬±¸¸¦ ¹ßÇ¥Çß´Ù.


Æĵµ´Â °¥¶óÁø ÇؾçÀÌ ±ÔÄ¢ÀûÀÎ Çü½ÄÀ¸·Î Çؼö¸é¿¡¼­ 200mÀÇ ºÐ¿­µµ°¡ 2100³â±îÁö 1990³â´ë ´ëºñ 100% ÀÌ»ó Áõ°¡ÇÒ ¼ö ÀÖ´Ù°í ¿¹»óÇß´Ù. ÀÌ ¿¬±¸´Â ¡º³×ÀÌó Ä¿¹Â´ÏÄÉÀ̼Ç(Nature Communications)¡» Àú³Î¿¡ Áö³­ 1¿ù 4ÀÏ °ÔÀçµÇ¾ú½À´Ï´Ù.


ÀÌ ¿¬±¸ÀÇ °øµ¿ÀúÀÚÀÚ CU º¼´õ »êÇϸ¦ °¨½ÃÇÏ°í»ê¿¬±¸¼Ò(INSTAAR)ÀÇ Àӽà °í¿ëÀÎ ´ÏÅ° ·Îº¥µÎ½ºÅ°(Nikki Lovenduski).  [»çÁøÁ¦°ø(»çÁøÃâó)=CUº¼´õ]
ÀÌ ¿¬±¸ÀÇ °øµ¿ÀúÀÚÀÚ CU º¼´õ »êÇϸ¦ °¨½ÃÇÏ°í»ê¿¬±¸¼Ò(INSTAAR)ÀÇ Àӽà °í¿ëÀÎ ´ÏÅ° ·Îº¥µÎ½ºÅ°(Nikki Lovenduski). [»çÁøÁ¦°ø(»çÁøÃâó)=CUº¼´õ]

 ÀÌ ¿¬±¸ÀÇ °øµ¿ ÀúÀÚÀÚ CU º¼´õ »êÇÏ°í°í»ê¿¬±¸¼Ò(INSTAAR)ÀÇ Àӽà Àå±³ ´ÏÅ° ·Îº¥µÎ½ºÅ°(Nikki Lovenduski)´Â ¡°À̹ø ¿¬±¸ °á°ú´Â ÇØ¾ç »ýÅÂ°è °Ç°­ÀÇ ¹Ì·¡¸¦ ÁøÈ­¸¦ ÀÌÇØÇÏ´Â µ¥ ¸Å¿ì Áß¿äÇÏ´Ù¡±°í ¼³¸íÇß´Ù .

 

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INSTAARÀÇ ¿¬±¸ °úÇÐÀÚÀÌÀÚ ÀÌ ¿¬±¸ÀÇ Á¦1 ÀúÀÚÀÎ Ä«¶ó ´Ï¼¾(Cara Nissen)Àº ¡°Àΰ£ÀÌ À¯¹ßÇÑ ÀÌ»êȭź¼Ò ¹èÃâÀº ÇØ¾ç »ê¼ºÈ­ÀÇ Çٽɡ±À̶ó°í ¸»Çß´Ù.


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¿¬±¸ÁøÀº ÄÄÇ»ÅÍ ¸ðµ¨À» »ç¿ëÇØ ³²±ØÇØÀÇ Çؼö°¡ 21¼¼±â¿¡ ¾î¶»°Ô º¯È­ÇÒÁö¿¡ ´ëÇØ ½Ã¹Ä·¹À̼ÇÇß´Ù. ±× °á°ú, 2100³â±îÁö ÇØ¾ç »ê¼ºÈ­°¡ ½ÉÈ­µÉ °ÍÀ̸ç, ¸¸¾à ¼¼°è°¡ ¹èÃâ·®À» ÁÙÀÌÁö ¸øÇÑ´Ù¸é »óȲÀº ´õ¿í ½É°¢ÇØÁú °ÍÀÌ´Ù.


INSTAARÀÇ ¿¬±¸ ½ÅûÀÚ ÀÌ ¿¬±¸ÀÇ Á¦1ÀúÀÚÀÎ ¿¡À̼¾(Cara Nissen).  [»çÁøÁ¦°ø(»çÁøÃâó)=CUº¼´õ]
INSTAARÀÇ ¿¬±¸ °úÇÐÀÚÀÌÀÚ ÀÌ ¿¬±¸ÀÇ Á¦1 ÀúÀÚÀÎ Ä«¶ó ´Ï¼¾(Cara Nissen). [»çÁøÁ¦°ø(Photo Source) = CU Boulder]

 ´Ï¼¾Àº ¡°ÀÌ´Â ½ÉÇظ¦ Æ÷ÇÔÇØ ³²±ØÇØ ¿¬¾È Àüü Çؼö°¡ ½É°¢ÇÑ »ê¼ºÈ­¸¦ °ÞÀ» ¼ö ÀÖ´Ù¡±°í ¸»Çß´Ù.

 

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ÀÌ ¿¬±¸ÀÇ Ãß°¡ °øµ¿ ÀúÀڷδ CU º¼´õÀÇ Ä«»êµå¶ó ºê·è½º(Cassandra Brooks), µ¶ÀÏ ºê·¹¸ÓÇϺì(Bremerhaven)¿¡ ÀÖ´Â ¾ËÇÁ·¹µå º£°Ô³Ê ¿¬±¸¼Ò(Alfred Wegener Institute)ÀÇ ¸¶¸®¿À È£Æ丶(Mario Hoppema), ¶öÇÁ Ƽ¸Ó¸¸(Ralph Timmermann) ¹× Áֵ𽺠ÇÏ¿í(Judith Hauck) ÀÖ´Ù.


[¿ø¹®º¸±â]


Acidity of Antarctic waters could double by century¡¯s end, threatening biodiversity


 

The acidity of Antarctica¡¯s coastal waters could double by the end of the century, threatening whales, penguins and hundreds of other species that inhabit the Southern Ocean, according to new CU Boulder research.


Scientists projected that by 2100, the upper 650 feet (200 meters) of the ocean—where much marine life resides—could see more than a 100% increase in acidity compared with 1990s levels. The paper, appeared Jan. 4 in the journal Nature Communications. 


¡°The findings are critical for our understanding of the future evolution of marine ecosystem health,¡± said Nicole Lovenduski, the paper¡¯s co-author and the interim director of CU Boulder¡¯s Institute of Arctic and Alpine Research (INSTAAR).  


The oceans play an important role as a buffer against climate change by absorbing nearly 30% of the CO2 emitted worldwide. But as more CO2 dissolves in the oceans, the seawater becomes more acidic. ¡°Human-caused CO2 emissions are at the heart of ocean acidification,¡± said Cara Nissen, the paper¡¯s first author and a research scientist at INSTAAR.


The Southern Ocean, which surrounds Antarctica, is particularly susceptible to acidification, partly because colder water tends to absorb more CO2. Ocean currents in the area also contribute to the relatively acidic water conditions. 


Using a computer model, Nissen, Lovenduski and the team simulated how the seawater of the Southern Ocean would change in the 21st century. They found it would become more acidic by 2100, and the situation would be severe if the world fails to cut emissions. 


¡°It¡¯s not just the top layer of the ocean. The entire water column of the coastal Southern Ocean, even at the bottom, could experience severe acidification,¡± Nissen said.


The team then investigated the conditions specifically in Antarctica¡¯s marine protected areas (MPAs). Human activities, such as fishing, are restricted in these regions to protect biodiversity. Currently, there are two MPAs in the Southern Ocean, covering about 12% of water in the region. Scientists have proposed designating three more MPAs to an international council in the past years, which would encompass about 60% of the Antarctic Ocean. 


The team¡¯s model showed that both adopted and proposed MPAs would experience significant acidification by the end of the century.


For example, under the highest-emission scenario, where the world makes no efforts to cut emissions, the average acidity of the water in the Ross Sea region—the world¡¯s largest MPA off the northern tip of Antarctica—would increase by 104% over 1990s levels by 2100. Under an intermediate emissions scenario, the water would still become 43% more acidic.


¡°It¡¯s surprising to me how severe ocean acidification would be in these coastal waters,¡± Nissen said. 


Previous studies have shown that phytoplankton, a group of algae that forms the basis of the marine food web, grow at a slower rate or die out when the water becomes too acidic. Acidic water also weakens the shells of organisms like sea snails and sea urchins. These changes could disrupt the food web, eventually impacting top predators like whales and penguins.   


The Weddell Sea is one of the three proposed MPAs located off the coast of the Antarctic Peninsula. Nissen said scientists think the Weddell Sea region could act as a climate change sanctuary for organisms, mainly because this area has the highest levels of sea ice coverage in the Antarctic. The ice shields the ocean from warming and prevents the seawater underneath from absorbing CO2 from the air, thereby reducing the rate of acidification. In addition, the region has little human activity to date. 


±×·¯³ª ¸ðµ¨Àº Áö±¸°¡ °è¼Ó µû¶æÇØÁü¿¡ µû¶ó ÇغùÀÌ ³ìÀ» °ÍÀÌ¸ç ¿þµ¨ÇØ Áö¿ªÀº Áß°£ ¼öÁØ¿¡¼­ ³ôÀº ¼öÁØÀÇ ¹èÃ⠽󪸮¿À ÇÏ¿¡¼­ ´Ù¸¥ MPA¿Í ¸¶Âù°¡Áö·Î »ê¼ºÈ­¸¦ °Þ°Ô µÉ °ÍÀ̶ó°í Á¦¾ÈÇßÁö¸¸ ÁøÇàÀº ¾à°£ Áö¿¬µÇ¾ú½À´Ï´Ù. 


NissenÀº ¡°ÀÌ °á°ú´Â ¿þµ¨ÇØ Áö¿ªÀ» º¸È£Áö¿ªÀ¸·Î ¼³Á¤ÇÏ´Â °ÍÀÌ ¿ì¼±¼øÀ§°¡ ³ô¾Æ¾ß ÇÔÀ» º¸¿©ÁÝ´Ï´Ù.¡±¶ó°í ¸»Çß½À´Ï´Ù. 


¡°ÀϹÝÀûÀ¸·Î ´ë¾çÀ» ¿¬±¸ÇÏ´Â °úÇÐÀڷμ­ Àú´Â ³²±Ø ÇØ¾È Áö¿ªÀ» ±âÈÄ ½ÅÈ£°¡ Àü ¼¼°èÀÇ ½ÉÇØ¿¡ µµ´ÞÇÏ´Â Åë·Î·Î »ý°¢ÇÏ´Â °æÇâÀÌ ÀÖ½À´Ï´Ù. ÀÌ ¿¬±¸´Â ÀÌ·¯ÇÑ ¿ªµ¿ÀûÀÎ ³²±Ø ÇØ¾È Áö¿ªµµ ±× ÀÚü·Î ±Þ°ÝÇÑ º¯È­¸¦ ÀÏÀ¸Å³ ¼ö ÀÖ´Ù´Â Á¡À» »ó±â½ÃÄÑÁÖ¾ú½À´Ï´Ù.¡±¶ó°í Lovenduski´Â ¸»Çß½À´Ï´Ù.


ÀÌ ¿¬±¸´Â »çȸ°¡ CO2 ¹èÃâ·®À» ½Å¼ÓÇÏ°í °ø°ÝÀûÀ¸·Î ÁÙÀÌ´Â ÃÖÀú ¹èÃ⠽󪸮¿À¿¡¼­¸¸ ¼¼°è°¡ ³²ºù¾çÀÇ ½É°¢ÇÑ ÇØ¾ç »ê¼ºÈ­¸¦ ÇÇÇÒ ¼ö ÀÖÀ½À» ½Ã»çÇÕ´Ï´Ù. 


NissenÀº "¾ÆÁ÷ ¹èÃâ °æ·Î¸¦ ¼±ÅÃÇÒ ½Ã°£ÀÌ ÀÖÁö¸¸ ½Ã°£ÀÌ ¸¹Áö ¾Ê½À´Ï´Ù."¶ó°í ¸»Çß½À´Ï´Ù. 


ÀÌ ¿¬±¸ÀÇ Ãß°¡ °øµ¿ ÀúÀڷδ CU BoulderÀÇ Cassandra Brooks, µ¶ÀÏ Bremerhaven¿¡ ÀÖ´Â Alfred Wegener InstituteÀÇ Mario Hoppema, Ralph Timmermann ¹× Judith Hauck°¡ ÀÖ½À´Ï´Ù.


[Ãâó = ÄÝ·Î¶óµµ ´ëÇб³ º¼´õ Ŭ¶ó¿ìµå(University of Colorado Boulder) ( https://www.colorado.edu/today/2024/01/09/acidity-antarctic-waters-could-double-centurys-end- Threating -biodiversity ) / 2024³â 1¿ù 9ÀÏ]

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