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@prefix dcterms: <http://purl.org/dc/terms/> . @prefix xsd: <http://www.w3.org/2001/XMLSchema#> . @prefix gcis: <http://data.globalchange.gov/gcis.owl#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix doco: <http://purl.org/spar/doco> . @prefix cito: <http://purl.org/spar/cito/> . @prefix biro: <http://purl.org/spar/biro/> . @prefix prov: <http://www.w3.org/ns/prov#> . <https://data.globalchange.gov/report/nca3/chapter/appendix-climate-science-supplement/figure/atmospheric-carbon-dioxide-levels> dcterms:identifier "atmospheric-carbon-dioxide-levels"; gcis:figureNumber "33.5"^^xsd:string; dcterms:title "Atmospheric Carbon Dioxide Levels"^^xsd:string; gcis:hasCaption "Air bubbles trapped in an Antarctic ice core extending back 800,000 years document the atmosphere’s changing carbon dioxide concentration. Over long periods, natural factors have caused atmospheric CO 2 concentrations to vary between about 170 to 300 parts per million (ppm). As a result of human activities since the Industrial Revolution, CO 2 levels have increased to 400 ppm, higher than any time in at least the last one million years. By 2100, additional emissions from human activities are projected to increase CO 2 levels to 420 ppm under a very low scenario, which would require immediate and sharp emissions reductions (RCP 2.6), and 935 ppm under a higher scenario, which assumes continued increases in emissions (RCP 8.5). This figure shows the historical composite CO 2 record based on measurements from the EPICA (European Project for Ice Coring in Antarctica) Dome C and Dronning Maud Land sites and from the Vostok station."^^xsd:string; dcterms:rights [ rdf:value "Free to use with credit to the original figure source."^^xsd:string; ]; gcis:hasImage <https://data.globalchange.gov/image/8f0eba22-984f-44b7-8967-e0532c9ef3b0>; gcis:isFigureOf <https://data.globalchange.gov/report/nca3/chapter/appendix-climate-science-supplement>; gcis:isFigureOf <https://data.globalchange.gov/report/nca3>; ## Geographical extent of the figure content ## Temporal extent of the figure content a gcis:Figure, doco:Figure . ## Person and his/her role in the creation of the entity: <https://data.globalchange.gov/report/nca3/chapter/appendix-climate-science-supplement/figure/atmospheric-carbon-dioxide-levels> prov:qualifiedAttribution [ a prov:Attribution; prov:agent <https://data.globalchange.gov/person/1024>; prov:hadRole <https://data.globalchange.gov/role_type/scientist>; prov:actedOnBehalfOf <https://data.globalchange.gov/organization/texas-tech-university>; ] .