Sea Level Trends - NOAA Tides & Currents

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index $('#home').html('Tides & Currents Home'); } else { $('#home').html('<a href="/">Home</a><span class="divider">/</span>'); } </script>  <div class="row-fluid"> <div class="span2">  <ul class="nav nav-list well hidden-phone hidden-tablet"> <li class="nav-header">Sea Level Trends </li> <li><a href="sltrends.html">Home/Map</a></li> <li> </li> <li><a href="sltrends_us.html">U.S. Stations</a> </li> <li> </li> <li><a href="sltrends_global.html">Global Stations</a> </li> <li> </li> <a id="btn btn-info" href="#">Trend Tables</a> <li> <select id="sltselect" style="width:100%;" onchange="window.open('' + this.options[this.selectedIndex].value + '.html', '_top');" class="chzn-done"> <option value="">Select</option> <option value="mslUSTrendsTable">U.S. Trend Table</option> <option value="mslGlobalTrendsTable">Global Trend Table</option> <option value="calc_avg_seasonal_us">U.S. Average Seasonal Cycles</option> <option value="calc_avg_seasonal_global">Global Average Seasonal Cycles</option> </select> </li> <li>  </li> <a href="slrmap.html">U.S. Trends Map</a> <li> </li> <li><a href="/sltrends/anomalymap.html">Monthly Anomalies</a></li> <li> </li> <li>U.S. Regions</li> <li> <select id="sltselect" style="width:100%;" onchange="window.open('regionalcomparison.html?region=' + this.options[this.selectedIndex].value, '_top');" class="chzn-done"> <option value="">Select</option> <option value="USNA">North Atlantic Station Trends</option> <option value="USNP">North Pacific Station Trends</option> <option value="USTG">Tropical/Gulf of Mexico Trends</option> </select> </li> <li> </li> <a href="/sltrends/globalregionalcomparison.html">Global Regional Trends </a> <li> </li> </ul>  <ul class="nav nav-list well visible-tablet visible-phone mobile-left-nav">  <a class="btn-navbar-left navbar-toggler-left collapsed" type="button" data-toggle="collapse" data-target=".nav-collapse-left"> <span class="navbar-toggler-icon"></span> </a> <div class="nav-collapse-left collapse-box collapse" style="height: 0;" > <li class="nav-header">Sea Level Trends </li> <li><a href="sltrends.html">Home/Map</a></li> <li> </li> <li><a href="sltrends_us.html">U.S. Stations</a> </li> <li> </li> <li><a href="sltrends_global.html">Global Stations</a> </li> <li> </li> <a id="btn btn-info" href="#">Trend Tables</a> <li> <select id="sltselect" style="width:100%;" onchange="window.open('' + this.options[this.selectedIndex].value + '.html', '_top');" class="chzn-done"> <option value="">Select</option> <option value="mslUSTrendsTable">U.S. Trend Table</option> <option value="mslGlobalTrendsTable">Global Trend Table</option> <option value="calc_avg_seasonal_us">U.S. Average Seasonal Cycles</option> <option value="calc_avg_seasonal_global">Global Average Seasonal Cycles</option> </select> </li> <li>  </li> <a href="slrmap.html">U.S. Trends Map</a> <li> </li> <li><a href="/sltrends/anomalymap.html">Monthly Anomalies</a></li> <li> </li> <li>U.S. Regions</li> <li> <select id="sltselect" style="width:100%;" onchange="window.open('regionalcomparison.html?region=' + this.options[this.selectedIndex].value, '_top');" class="chzn-done"> <option value="">Select</option> <option value="USNA">North Atlantic Station Trends</option> <option value="USNP">North Pacific Station Trends</option> <option value="USTG">Tropical/Gulf of Mexico Trends</option> </select> </li> <li> </li> <a href="/sltrends/globalregionalcomparison.html">Global Regional Trends </a> <li> </li> </div> </ul> </div> <div class="span10">  <script language="JavaScript1.2" src="js/sltrendsmap.js" type="text/javascript"></script> <script type="text/javascript" src="/js/check-redirect.js"></script> <script type="text/javascript"> $(document).ready(function() { mapit(); }); </script> <div class="row-fluid"> <h3 class="pageTitle">Relative Sea Level Trends</h3> <div class="span11 clearfix" style="text-align: left;"> <p style="text-align:justify"> The sea level trends measured by tide gauges that are presented here are local relative sea level (RSL) trends as opposed to the global sea level trend. Tide gauge measurements are made with respect to a local fixed reference on land. RSL is a combination of the sea level rise and the local vertical land motion. The global sea level trend has been recorded by satellite altimeters since 1992 and the latest global trend can be obtained from <a target="0" href="https://www.star.nesdis.noaa.gov/sod/lsa/SeaLevelRise/">NOAA's Laboratory for Satellite Altimetry</a>, with maps of the regional variation in the trend. The <a target="0" href='https://tidesandcurrents.noaa.gov/redirect.shtml?url=66'>University of Colorado's Sea Level Research Group</a> compares global sea level rates calculated by different research organizations and discusses some of the issues involved. </p> </div> <div class="span11 clearfix" style="text-align: center;"> <button type="button" onclick="pan('eastcoast');" class="btn">East Coast</button> <button type="button" onclick="pan('westcoast');" class="btn">West Coast</button> <button type="button" onclick="pan('gulfcoast');" class="btn">Gulf Coast</button> <button type="button" onclick="pan('alaska');" class="btn">Alaska</button> <button type="button" onclick="pan('hawaii');" class="btn">Hawaii</button> <button type="button" onclick="pan('global');" class="btn">Global</button> <div id='map_canvas' style='height: 450px; border: 1px solid grey; margin-top: 10px; margin-bottom: 10px;'></div> <span style='font-style: italic;'> <i> The map above illustrates relative sea level trends , with arrows representing the direction and magnitude of change. Click on an arrow to access additional information about that station. </i> </span> </div> <br /> <div align='center'>  <table class="maplegend2"> <tr> <td colspan="16" align="center"><b>Relative Sea Level Trends</b><br/>mm/yr (feet/century)</td> </tr> <tr> <td><img src="images/redbar.png" alt="colored bar in legend"/></td> <td align="center">Above 9<br>(Above 3)</td> <td><img src="images/orangebar.png" alt="colored bar in legend"/></td> <td align="center">6 to 9 <br>(2 to 3)</td> <td><img src="images/yellowbar.png" alt="colored bar in legend"/></td> <td align="center">3 to 6 <br>(1 to 2)</td> <td><img src="images/greenbar.png" alt="colored bar in legend"/></td> <td align="center"> >0 to 3 <br>(0 to 1)</td> <td><img src="images/bluebar.png" alt="colored bar in legend"/></td> <td align="center">-3 to 0 <br>(-1 to 0)</td> <td><img src="images/lightbluebar.png" alt="colored bar in legend"/></td> <td align="center">-6 to -3 <br>(-2 to -1)</td> <td><img src="images/lightpurplebar.png" alt="colored bar in legend"/></td> <td align="center">-9 to -6 <br>(-3 to -2)</td> <td><img src="images/purplebar.png" alt="colored bar in legend"/></td> <td align="center">Below -9 <br>(Below -3)</td> </tr> </table> </div> <div class="span11"> <p style='text-align: justify;' >The Center for Operational Oceanographic Products and Services has been measuring sea level for over 150 years, with tide stations of the <a id="underline" href="https://tidesandcurrents.noaa.gov/nwlon.html">National Water Level Observation Network</a> operating on all U.S. coasts. Changes in RSL, either a rise or fall, have been computed at 142 long-term water level stations using a minimum span of 30 years of observations at each location. These measurements have been averaged by month which removes the effect of higher frequency phenomena in order to compute an accurate linear sea level trend. The trend analysis has also been extended to 240 global tide stations using data from the <a id="underline" target="0" href="https://tidesandcurrents.noaa.gov/redirect.shtml?url=41"> Permanent Service for Mean Sea Level (PSMSL)</a>. This work is funded in partnership with the NOAA OAR <a id="underline" target="0" href="http://cpo.noaa.gov/" target="_blank">Climate Observation Division</a>. </p> <h4>Frequently Asked Questions:</h4> <p> <a id="underline" href="faq.html#q1">What is Sea Level?</a><br> <a id="underline" href="faq.html#q2">Why does Sea Level change over time?</a><br> <a id="underline" href="faq.html#q3">What does Sea Level have to do with Climate?</a><br> <a id="underline" href="faq.html#q4">What are the differences between historical and new sea Level trends and confidence intervals?</a> </p> <h4>Data and Resources</h4> <ul> <li><b>NOAA Technical Report NOS CO-OPS 86</b>, <a id="underline" href="https://tidesandcurrents.noaa.gov/publications/techrpt86_PaP_of_HTFlooding.pdf"> "Patterns and Projections of High Tide Flooding Along the U.S. Coastline Using a Common Impact Threshold" </a> </li> <li><b>NOAA Technical Report NOS CO-OPS 86</b>, <a id="underline" href="https://tidesandcurrents.noaa.gov/publications/techrpt86_PaP_of_HTFlooding.csv"> Data: Patterns and Projections of High Tide Flooding (CSV) </a> </li> <li><b>NOAA Technical Report NOS CO-OPS 83</b>, <a id="underline" href="https://tidesandcurrents.noaa.gov/publications/techrpt83_Global_and_Regional_SLR_Scenarios_for_the_US_final.pdf"> "Global and Regional SLR Scenarios for the U.S." </a> </li> <li><b>NOAA Technical Report NOS CO-OPS 83</b>, <a id="underline" href="https://tidesandcurrents.noaa.gov/publications/techrpt083.csv"> Data: Global and Regional SLR Scenarios for the U.S. (CSV) </a> </li> <li> "<a id="underline" href="https://science2017.globalchange.gov/chapter/12/"> Sea Level Rise </a>" Sweet, et al. Climate Science Special Report: Fourth National Climate Assessment, Volume I </li> <li> <a id="underline" href="https://coast.noaa.gov/data/digitalcoast/pdf/slcscenarios.pdf"> "Incorporating Sea Level Change Scenarios at the Local Level" </a> &nbsp Marcy, D., et al., NOAA Coastal Services Center, 2012. </li> <li> <b>NOAA Technical Report NOS CO-OPS 53</b>, <a id="underline" href="https://tidesandcurrents.noaa.gov/publications/Tech_rpt_53.pdf"> "Sea Level Variations of the United States 1854-2006" </a> </li> <li><b>NOAA Technical Report NOS CO-OPS 36</b>, <a id="underline" href="https://tidesandcurrents.noaa.gov/publications/NOAA_Technical_Report_NOS_COOPS_036.pdf"> "Sea Level Variations of the United States 1854-1999" </a> </li> </ul> <h4>Contact Information</h4> <a id="underline" href="https://tidesandcurrents.noaa.gov/contact.html">For additional information, please contact CO-OPS.</a> </div> </div> </div> </div> <hr/>  </div>  <div class='push'></div> <footer> <div class="footer-container"> <div class="row-fluid copyright_box"> <div class="container footer-wrapper"> <div class="copyright-p"> <h6 class="copyright-header" style="font-size: 1rem; font-weight: 500">Website Owner: Center for Operational Oceanographic Products and Services </h6> <p style="font-size: 14px"> <a class="copyrightText" href="http://www.noaa.gov">National Oceanic and Atmospheric Administration</a> <a class="footerbox" style="margin: 0 1rem">•</a> <br class="break"> <a class="copyrightText" href="http://oceanservice.noaa.gov">National Ocean Service</a> <a class="footerbox" style="margin: 0 1rem">•</a> <br class="break"> <a class="copyrightText" href="/privacy.html">Privacy Policy</a> <a class="footerbox" style="margin: 0 1rem">•</a> <br> <a class="copyrightText" href="/disclaimers.html">Disclaimer</a> <a class="footerbox" style="margin: 0 1rem">•</a> <br class="break"> <a class="copyrightText" href="/survey.html">Take Our Survey </a> <a class="footerbox" style="margin: 0 1rem">•</a> <br class="break"> <a class="copyrightText" href="https://www.noaa.gov/foia-freedom-of-information-act">Freedom of Information Act</a> <a class="footerbox" style="margin: 0 1rem">•</a> <br class="break"> <a class="copyrightText" href="/contact.html">Contact Us</a> </p> </div> </div> </div> </div> </footer> <script src="https://cdn.tidesandcurrents.noaa.gov/assets/js/bootstrap.min.js"></script> <script type="text/javascript" src="https://cdn.tidesandcurrents.noaa.gov/assets/js/hoverintent.js"></script> <script type="text/javascript" src="https://cdn.tidesandcurrents.noaa.gov/assets/js/chosen.jquery.js"></script>   <script type="text/javascript" src="https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?agency=DOC&subagency=NOAA&pua=UA-47217314-1" id="_fed_an_ua_tag"></script>  <script type="text/javascript" src="https://cdn.tidesandcurrents.noaa.gov/assets/js/jquery-ui-autocomplete-1.9.2.js"></script> <script type="text/javascript" src="/js/bluebird.js"></script> <script type="text/javascript" src="https://cdn.tidesandcurrents.noaa.gov/assets/js/searchbox.js"></script> <script type="text/javascript" src="https://cdn.tidesandcurrents.noaa.gov/assets/js/custom_v1.js"></script> <script type="text/javascript" src="https://cdn.tidesandcurrents.noaa.gov/assets/js/js-bs4/scroller.js"></script>   <script type="text/javascript" src="https://cdn.tidesandcurrents.noaa.gov/assets/js/storm_alert_panel_bs2.js"></script> <script type="text/javascript" src="https://cdn.tidesandcurrents.noaa.gov/assets/js/sitewide_alert.js"></script>   <script type="text/javascript" src="js/breadcrumbs.js"></script> </body> </html>

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Sea Level Trends - NOAA Tides & Currents