first_imgAccordingto Climate Central, over the course of the 21st century, global sea levels areprojected to rise between about 2 and 7 feet, and possibly more. The keyvariables will be how much warming pollution humanity dumps into the atmosphereand how quickly the land-based ice sheets in Greenland and especiallyAntarctica destabilize. Projecting where and when that rise could translateinto increased flooding and permanent inundation is profoundly importantfor coastal planning and for reckoning the costs of humanity’s emissions. “Infact, based on CoastalDEM, roughly 110 million people currently live on landbelow high tide line. This population is almost certainly protected to somedegree by existing coastal defenses, which may or may not be adequate forfuture sea levels,” Climate Central stated. Basedon sea level projections for 2050, land currently home to 300 million peoplewill fall below the elevation of an average annual coastal flood. By 2100, landnow home to 200 million people could sit permanently below the high tideline.  Nevertheless, he would seek theopinion of the Mines and Geosciences Bureau and other concerned governmentagencies about the study, said Treñas. “But whether malubog ang Iloilo City, that is another story,” said Treñas. According to the study, Iloilo City isamong major cities in the Philippines that rising sea levels could swallow. Otherareas were Roxas City in Capiz province, Cebu City, northwestern Metro Manilaand parts of Bulacan, the city of Manila, southwestern Manila, and ZamboangaCity. “Waayko kabalo kon ano na-refer ‘ya, bilog nga Iloilo City or part sang Iloilo City? I will have to checkthat,” said the mayor. “First of all I do not know whetherthat will really happen. Second, I do not know who made the report,” saidTreñas. Sealevel rise is one of the best known of climate change’s many dangers. Ashumanity pollutes the atmosphere with greenhouse gases, the planet warms. Andas it does so, ice sheets and glaciers melt and warming sea water expands,increasing the volume of the world’s oceans. The study results were published inthe journal Nature Communications. IN THE RED. Parts of Iloilo City are vulnerable to sea level rise, according to a study conducted by Climate Central, a research organization on climate change based in the United States. It produced this map using a new digital elevation model. Screenshot from coastal.climatecentral.org Treñas acknowledged that the rising ofseawater is one reason why the city government has pumping stations. According to the study, rising seascould affect three times more people by 2050 than previously thought,threatening to erase some of the world’s coastal cities.Iloilo City is a coastal metropolis. It faces the Iloilo Strait. “Because magsugata ang high tide, nagasulod ang tubig sa drainage naton,” he said. Theconsequences range from near-term increases in coastal flooding that can damageinfrastructure and crops to the permanent displacement of coastal communities. ILOILO City – “Things like that shouldnot be immediately accepted by anyone.” This is Mayor Jerry Treñas’ reaction toa report about this city possibly disappearing by 2050 due to rising sealevels. The study was conducted by Climate Central, a United States-based“independent organization of leading scientists and journalists researching andreporting the facts about changing climate and its impact on the public.” Inits website, Climate Central stated that projecting flood risk involves notonly estimating future sea level rise but also comparing it against landelevations. However, sufficiently accurate elevation data are eitherunavailable or inaccessible to the public, or prohibitively expensive in mostof the world outside the United States, Australia, and parts of Europe. Thisclouds understanding of where and when sea level rise could affect coastalcommunities in the most vulnerable parts of the world. According to Climate Central, a newdigital elevation model it produced helps fill the gap. That model, CoastalDEM,shows that many of the world’s coastlines are far lower than has been generallyknown and that sea level rise could affect hundreds of millions of more peoplein the coming decades than previously understood. Despitethese existing defenses, Climate Central said increasing ocean flooding,permanent submergence, and coastal defense costs are likely to deliver profoundhumanitarian, economic, and political consequences. Treñas said he heard the new about thestudy but was unsure about its veracity. The city’s pumping stations are onMuelle Loney Street one at the Iloilo River. Tolessen the threat, Climate Central suggests adapting measures such asconstruction of levees and other defenses or relocation to higher ground. “Thiswill happen not just in the distant future, but also within the lifetimes ofmost people alive today,” it added./PNlast_img read more