This page contains links to downloadable geographic data created or modified by pacific institute researchers for the project impacts of. The sea level rise scenarios were developed by using available longterm sea level rise data from portland, bar harbor, and eastport tide gauges and the us army corps of engineers sea level change curve calculator v. Sea level variations of the united states 18542006 chris zervas. To provide a preliminary assessment of coastal ramsar sites that are. Latest version hydrodynamics and sea level rise datasets. Donnelly on the other hand sticks to the available data.
Our coast, our future ocof is a collaborative, userdriven project focused on providing coastal california resource managers and land use planners locally relevant, online maps and tools to help understand, visualize, and anticipate vulnerabilities to sea level rise and storms. As we monitor change in sea level into the 21st century, the statement made by alexander. The goal will be to determine trends from rather noisy data, determine places where relative sea level is rising faster than others, and the reason for the rapid rise. In some ocean basins, sea level rise has been as much as 68 inches 1520 centimeters since the start of the satellite record. Snap the shore, see the future a collaboration of noaas office for coastal management and the king tides project to help people understand the global impact of sea level rise. They are data files, created for use by geographic information system gis software. We started in hampton roads, virginia and have learned from the mapping efforts of 1,000s of volunteers. Mapping confidence layers highlight errors related to elevation and water height data. Global relative sealevel rise simulation sea level. Continued growth of greenhouse gas emissions and associated global warming could well promote slr of 1m in this century, and unexpectedly rapid breakup of the greenland and west antarctic ice sheets might produce a 35m slr. Sea level rise slr due to climate change is a serious global threat. Sealevel rise is an increase in eustatic sea level that is sustained over a long period of time.
We estimate the rise in global average sea level from satellite altimeter data for 19932009 and from coastal and island sealevel measurements from 1880 to 2009. Thus, for each 3 minute 5 km section of shoreline, there are data for each of the following variables geomorphology, relative rate of sealevel rise, coastal slope, mean wave height, tidal range and erosion and accretion rates, as well as their ranked values 1 5. This data has shown a moreorless steady increase in global mean sea level gmsl of around 3. Sea level rise projections produced by the university of florida geoplan center. The global extreme sea level analysis gelsa data product combines high frequency hourly tide gauge data from around the world for the purposes of studying extreme sea level events. Laboratory for satellite altimetry sea level rise products sea level rise maps. The slr inundation surfaces available for download on this page were created by the university of florida geoplan center using the united states army corps of engineers usace sea level change curve calculator 2015. Thus, for each 3 minute 5 km section of shoreline, there are data for each of the following variables geomorphology, relative rate of sea level rise, coastal slope, mean wave height, tidal range and erosion and accretion rates, as well as their ranked values 1 5 and the calculated coastal vulnerability index cvi. Sea level variations of the united states 18542006 sea level record in north america silver spring, maryland december 2009.
This icon serves as a link to download the essential accessibility assistive technology app for. Climate change and sealevel rise based on observed data. Blue color indicates areas already threatened by flooding, while the lighter shades are area projected to also be vulnerable to flooding given 1. The apps main feature is an interactive sea level rise viewer, where users can enter an address to visualize how an increase in sea level of.
Sep 25, 2019 these data illustrate potential flooding from future sea level risefrom current mean higher high water to a sixfoot rise. Go to slr viewer go to digital coast go to map services go to data update history. Whether or not this represents a further increase in the rate of sea level rise is not yet certain. We report the change in annual mean coastal sea level to 2018 against the established baseline mean sea level for 19862005 for the longterm sites plus an additional two sites. Global average absolute sea level change, 18802014. Data sets marine and coastal regions and sea level rise sedac. However, when the last ice age ended around 12,000 years ago, rapid melting of continental ice sheets caused a sea level rise of 11 mm a year or a meter in 100 years, suggesting to some researchers that a 1meter rise in sea level in the next 100 years is a realistic scenario. In this activity, students will use sealevel rise data to create models and compare shortterm trends to longterm trends. The center for operational oceanographic products and services has been measuring sea level for over 150 years, with tide stations of the national water level observation network operating on all u. One of the outcomes from global warming is sealevel rise, caused by thermal expansion and melting of ice caps and glaciers. This is more than 50% larger than the average value over the 20th century.
A preliminary look at sea level rise and coastal flooding impacts, through nationally consistent data sets and analyses. More precise data gathered from satellite radar measurements reveal an accelerating rise of 7. White 2011, sealevel rise from the late 19th to the early 21st century. These data illustrate potential flooding from future sea level rise from current mean higher high water to a sixfoot rise. Sea level rise is caused primarily by two factors related to global warming. The viewer is a screening level tool that uses bestavailable, nationally consistent data sets and analyses. In general, gloss data centres are associated with scientists involved with sea level research, which helps to maximise the quality of gloss datasets. Coastal communities are affected by their local sea level rise, which reflects global sea level rise, changes in local land elevation, tides and winds. This update from the church and white 2011 extends the data files to the end of 20 for the reconstruction from tide gauges and to the end of 2014 for the satellite altimetry. Most data is public, but some private data is available on request e. Slowdown in antarctic mass loss from solid earth and sealevel feedbacks slowdown in antarctica contribution to sea level because of ground elastic rebound.
All data are based on the best available elevation data. The second dataset, impact of 6 meter sea level rise red, shows the sea level rising meter by meter from current sea level up to 6 meters above sea level. Data from the sea level rise viewer were used to create an interactive map that shows how areas vulnerable to flooding today were often marshlands in 1863. This page contains links to downloadable geographic data created or modified by pacific institute researchers for the project impacts of sea level rise on the california coast. Changes in rsl, either a rise or fall, have been computed at 142 longterm water level stations using a minimum span of 30 years of observations at each location. Scientists update sea level rise projections for south florida and its not looking good. The longterm trend is based on tide gauge data that have been adjusted to show absolute global trends through calibration with recent satellite data. Sea level rise data download go to slr viewer go to digital coast go to map services go to data update history no data for your area. Slowdown in antarctic mass loss from solid earth and sea level feedbacks slowdown in antarctica contribution to sea level because of ground elastic rebound.
This particular layer depicts passive flooding using the 2. The apps main feature is an interactive sea level rise viewer, where users can enter an address to visualize how an increase in sea level of up to 6 feet may affect their neighborhoods. Latest version hydrodynamics and sea level rise rdf. Global sea level has been rising over the past century, and weve seen the rate increase in recent decades.
The national snow and ice data center predicts that if both antarctica and greenland, the worlds largest ice sheets, both melted completely, the sea level would rise more than 70 meters. Get the latest information on sea level science, news, data, and newest features of the nasa sea level web portal. Since at least the start of the 20th century, the average global sea level has been rising. This increases water volume and melts ice sheets and glaciers, contributing to sea level rise. By the end of the 2050s, 9 inches of sea level rise is expected consistently across emissions scenarios and is likely to occur as early as the 2030s. The gloss sea level data centres in the table below provide complimentary data streams while helping to shape the future of the global in situ sea level observing network. Sea level rise impacts on ramsar wetlands of international importance, v1 2000 2010 urbanrural population and land area estimates, v2 1990, 2000, 2010, 2100 urbanrural population estimates, v1 1990, 1995, 2000. The bathtub data were developed by usgs bay area and pacific institute coast to explore consequences of a 100year flood event with 1.
To provide a preliminary assessment of coastal ramsar sites that are at risk to inundation as a consequence of sea level rise. Data includes the 10th, 25th, 50th, 75th and 90th percentile projections for the years 2020, 2050, 2080 and 2100. Gradient fingerprint mapping simulation sea level vesl. Watch the video to learn how much global sea level is rising each year, what that looks like in everyday terms, and why it matters. Geodatabase of projected sea level rise based on models released by new york city panel on climate change npcc. Daniel posits there is more than enough slack in this data to periodically reproduce the apparently rapid sea level rise of 2. The plots have been smoothed with a 4month boxcar filter. In louisiana, for example, local sea level is rising about 4 inches per decade because the land is sinking and sea level is rising. The simulation captures the evolution of sea level rise over the entire planet, taking into account eustatic sea level, sea level rise from perturbations to the gravity field, and sea level rise from local elastic rebound of the earths crust. Tide gauge measurements are made with respect to a local fixed reference on land. All but five showed higher sea levels in 2019, and most showed sea level rising at a faster pace. Laboratory for satellite altimetry sea level rise star. Global average absolute sea level change, 18802014 dataset. The following maps provide estimates of sea level rise based on measurements from satellite radar altimeters.
The slr inundation surfaces available for download on this page were created by the university of florida geoplan center using the united states army corps of engineers usace sealevel change curve calculator 2015. Please see the disclaimer pdf for more information. Urbanrural population estimates, v1 1990, 1995, 2000 low elevation coastal zone lecz. For 19932009 and after correcting for glacial isostatic adjustment, the estimated rate of rise is 3. The maps are produced using detailed elevation maps with local and. The sea level rise scenarios were developed by using available longterm sea level rise data from portland, bar harbor, and eastport tide gauges and the us army corps of engineers sealevel change curve calculator v. See celebrate earth day with nasa science data in this activity, students will use sea level rise data to create models and compare shortterm trends to longterm trends. Here, we model the contribution of polar ice sheets to local sea level rise. Global average absolute sea level change, 18802014 from the us environmental protection agency using data from csiro, 2015. Sea level rise viewer noaa office for coastal management. Perform regional statistical analysis, time series analysis and. Rsl is a combination of the sea level rise and the local vertical land motion.
In the practice lab, we will focus on the west coast of the us. This is the 100year floodplain for the 2020s based on femas preliminary work map data and the new york panel on climate changes 90th percentile projects for sealevel rise 11 inches. The first graph tracks the change in sea level since 1993 as observed by satellites. Users can simulate inundation associated with one to six feet of sea level rise at various scales along the contiguous united states coast, except for the great lakes.
These data illustrate potential flooding from future sea level risefrom current mean higher high water to a sixfoot rise. Since 1955, something like 90% of the excess heat produced by global warming has gone into the oceans, so thermal expansion is an important component of sea level rise. The local trends were estiamted using data from topexposeidon tp, jason1, jason2, and jason3, which have monitored the same ground track since 1992. Florida sea level rise projections in meters data basin. Gradient fingerprint mapping sea level fingerprints global relative sea level rise local sea level. This activity is related to a teachable moment from april 12, 2017. Sealevel rise can occur as a result of water or ice being added to the ocean, or by the water in the ocean heating up and expanding to take up more space. By the end of the century, global mean sea level is likely to rise at least one foot 0.
Since 1955, something like 90% of the excess heat produced by global warming has gone into the oceans, so thermal expansion is an important component of sealevel rise. At the turn of the 20th century it was realized that there was a need to account for a rise in sea level and the first national tidal datum epoch was. Sea level rise data download office for coastal management. Most of the observed sea level rise about 3 mm per year is coming from the meltwater of landbased ice sheets and mountain glaciers, which adds to the oceans volume about 2 mm per year combined, and from thermal expansion, or the ocean waters expansion as it warms roughly 1 mm per year. Mar 10, 2020 as human activity warms our planet, the ocean absorbs over 90% of the excess heat. Increased global temperatures lead to rising sealevels because warmer waters take up more space and glaciers and polar ice sheets melt into the ocean.
Figure 1 shows annual absolute sea level change averaged over the entire earths ocean surface. Global mean sea level in 2018 was higher than any year since measurements started in the late 19th century, about 20 cm higher than at the beginning of the 20th century. They will then determine whether sea level rise is occurring based on the data. In this part of the lab, you will look at tide gauge data showing relative sea level rise data back to about 1940. Data and maps provided can be used at several scales to. These projections measure sea level rise in meter increments up until 6 meters, the predicted sea level rise measure if both greenland and the west antarctic ice sheet melt. Relative sealevel rise includes the vertical land movement of the surrounding area for example, a sinking landmass increases the rise in ocean sea level. Download data sea level rise is caused primarily by two factors related to global warming. These data are used in noaas sea level rise viewer, a screening level tool. These observations also play an important role in monitoring change in global sea level. These data are used in noaas sea level rise viewer, a screeninglevel tool.
In general, gloss data centres are associated with scientists involved with sea level research. Use of the dataset must be acknowledged using a citation which would include. Global and european sealevel rise european environment agency. Sea level rise is an increase in the level of the worlds oceans due to the effects of global warming. They will then determine whether sealevel rise is occurring based on the data. One of the outcomes from global warming is sea level rise, caused by thermal expansion and melting of ice caps and glaciers. However, measurements become more reliable from 1890 onwards.
This map viewer illustrates the scale of potential coastal flooding after varying amounts of sea level rise. This data contains cumulative changes in sea level for the worlds oceans since 1880, based on a combination of longterm tide gauge measurements and recent satellite measurements. Gradient fingerprint mapping sea level fingerprints global relative sealevel rise local sea level. Ipcc srocc data on sea level rise provided by intergovernmental panel on climate change ipcc. This longterm data set has been calculated through 20, while satellite data are now available. Sea level rise projections up for south florida the. Global mean sea level from topexposeidon, jason1, jason2, and jason3. From that year all data were gathered in an automated way. The average rate of sea level rise over the period 19932018, when satellite measurements have been available, has been around 3. Global tidal records from 1900 to 1990 show an estimated 4 to 5inch rise in global mean sea level.
This lab will introduce raster processing by examining the potential impact of sea level rise around humboldt bay. Earth headlines nasa satellites help forecast yellowstone wildlife migration. Between 1900 and 2016, the sea level rose by 1621 cm 6. Coast coastal adaptation to sea level rise tool is a process that helps users answer questions in regards to the costs and benefits of actions and strategies to avoid damages to assets from sea level rise andor coastal flooding. Data provided by the mayors office of longterm planning and sustainability oltps on behalf of cuny institute for sustainable cities cisc and the. Participate in crowdsourcing events to capture sea level rise data.