Sea level rise over next 30 years will affect NH

Sea level rise over next 30 years will affect NH



SEA LEVEL RISE. OVER THE LAST HUNDRED YEARS, WE’VE SEEN ABOUT A FOOT OF SEA LEVEL RISE. SCIENTISTS SAY TWO MAJOR FACTORS A MELTING ICE AND WARMING WATER CONTRIBUTE TO RISING OCEANS AND THE RATE ARE RISING HAS SPED UP SINCE 1970. THE HISTORICAL DATA THAT WE HAVE IS DATA STARTING TO PAINT A PICTURE AND WE’RE ABLE TO THAT INTO THE FUTURE. THE LATEST REPORT, NOAH, SHOWS AN ADDITIONAL 1 TO 1 AND A HALF FEET OF SEA LEVEL RISE BY THE YEAR 2050. JUST OVER THE LAST FIVE YEARS, OUR OUR UNDERSTANDING OF THOSE PROCESSES HAS IMPROVED GREATLY. AND SO THE MODEL THAT WERE USED TO GENERATE THE IN THIS 2022 REPORT ARE MORE REFINED WITH THAT DATA, NOAH DEVELOPED AN INTERACTIVE TOOL SHOWING THE IMPACT, FOR INSTANCE, THIS IS A PROJECTION OF INUNDATION AROUND DRY HARBOR WITH EA LEVEL OF S THEN TWO FEET, ABOUT 6500 PEOPLE LIVE IN LOW LYING AREAS IN ROCKINGHAM COUNTY. WHO WOULD BE AFFECTED BY LESS THAN TWO FEET OF SEA LEVEL RISE, SOMETHING THAT’S NEARLY GUARANTEED TO HAPPEN IN THE NEXT FEW DECADES. WE HAVE MUCH BETTER UNDERSTANDING NOW OF HOW GREENLAND AND ANTARCTICA MIGHT ACTUALLY RESPOND TO ELEVATED IN THE FUTURE AND WE HAVE A PRETTY GOOD UNDERSTANDING OF HOW FROM THOSE TWO SOURCES, WHICH ARE TWO INES, RE HOWS HERE WILL BEOUR OF THE DOMINANT HERE WITH THE DOMINANT S . INFRASTRUCTURE IS AT RISK AS WELL. ENGINEERS OFTEN USE HISTORICAL RECORDS DURING THE DESIGN STAGES, AND WHILE THAT’S BEEN FINE IN THE PAST IT MAY NO LONGER BE SUFFICIENT. RESEARCH IS ALSO BEING DONE. THE HIDDEN EFFECTS OF SEA LEVEL RISE ON GROUNDWATER. YOU SEE THE SURFACE INUNDATION IN THE GROUNDWATER, YOU DON’T SEE IT HAPPENING. YOU KNOW, DEPENDING ON GEOLOGY OF THE COAST, THAT GROUNDWATER RISE CAN HAPPEN SEVERAL KILOMETERS INLAND. JOSIAH’S A UNIQUE PROFESSOR IN CIVIL AND ENVIRONMENTAL, IS PART OF A STATE PROJECT FOCUSED ON SEA LEVEL RISE AND HOW TO MITIGATE ITS IMPACTS. ONE CONCERN IS WEAKENING ROADWAYS, DESIGNED TO BE DRY. SO IF YOU START GETTING GROUNDWATER COMING IN, THAT IMPACTS THE STRENGTH OF THE PAVEMENT STRUCTURES. BUT WHAT’S GOING TO HAPPEN IS THOSE PAVEMENTS ARE GOING TO DEGRADE FASTER. THIS COULD MEAN MORE FREQUENT AND REHABILITATION, SOMETHING TO HAPPEN EVEN IF GLOBAL EMISSIONS ARE REDUCED. AT THIS POINT, IT’S IT’S NOT STOPPING. IT CAN’T STOP A BIG SHIP ON A DIME. EVEN IF YOU GOT THE ENGINE. THAT’S STILL GOING IN THE DIRECTION FOR SOMETHING LIKE. SHE HOPES PEOPLE GET EDUCATED ABOUT THE ISSUE AND UNDERSTAND THE IMPLICATIONS AND POTENTIAL SOLUTIONS. YOU KNOW, GET OUT, ASK QUESTIONS, TALK TO FOLKS. THERE’S A LOT OF EFFORTS TRYING TO GET THE PUBLIC INVOLVED, GET STAKEHOLDERS INVOLVED AND PARTICIPATE. ONE NATURAL SOLUTION IS TO BUILD UP NEW HAMPSHIRE’S MARSHES AND DUNES WHICH ACT AS NATURAL BARRIERS BY TAKING ENERGY OUT OF INCOMING LEAVES. ULTIMATELY, CURRENT ACTION OR INACTION WILL MAKE ALL THE DIFFERENCE THE EXTENT TO WHICH WE CAN JUST MITIGATE CLIMATE CHANGE IS GOING TO BE VERY, VERY, VERY IMPORTANT. SCIENTISTS SAY UNDERSTANDING HOW SEA LEVELS ARE, RESPONDING TO THE CHANGING CLIMATE WILL HELP US IN THE LONG RUN. FOR FORECASTING OUR FUTURE

Sea level rise over next 30 years will affect NH

About 6,500 people who live in low-lying areas in Rockingham County would be affected by less than two feet of sea level rise, something that’s nearly guaranteed to happen in the next few decades.

About 6,500 people who live in low-lying areas in Rockingham County would be affected by less than two feet of sea level rise, something that’s nearly guaranteed to happen in the next few decades.

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