31:[{"id":"d0d4abb6acd202162a71f0ae20cc9a5269bd2420f16c5171e6a5e3fcb8158ca9d113d4e098b591d427a8de693c11218896aa101505a09c524f54628444f172dc","href":"https://static.observableusercontent.com/files/d0d4abb6acd202162a71f0ae20cc9a5269bd2420f16c5171e6a5e3fcb8158ca9d113d4e098b591d427a8de693c11218896aa101505a09c524f54628444f172dc","name":"arctic_ice_NSIDC v3.csv","type":"text/csv","lastModified":1650848039699.377,"size":7240},{"id":"4ed25bb971e6796a23d5ff2fa80c2a6ef2ee75f242dd2118ea5504cb2418a51f24a56d8e1582b2b6cdc8a9582122df72bcdad7d95cf22efc597d65cb3cba483f","href":"https://static.observableusercontent.com/files/4ed25bb971e6796a23d5ff2fa80c2a6ef2ee75f242dd2118ea5504cb2418a51f24a56d8e1582b2b6cdc8a9582122df72bcdad7d95cf22efc597d65cb3cba483f","name":"arctic_ice_OSI SAF Sea Ice Index v2.1.csv","type":"text/csv","lastModified":1650848039699.377,"size":7259}] 2f:{"title":"Day 24: Theme - Financial Times","cells":[{"id":4,"value":"# Day 24: Theme - Financial Times\n## Created for #30DayChartChallenge April 2022.","pinned":false,"hidden":false,"mode":"md"},{"id":50,"value":"### Process\nI like this \"Circle Timeline\" chart type referenced in the [FT visual vocabulary guide](https://journalismcourses.org/wp-content/uploads/2020/07/Visual-vocabulary.pdf).\n\nReference:\n- [Dot Plot](https://observablehq.com/@d3/dot-plot)","pinned":false,"hidden":false,"mode":"md"},{"id":289,"value":"
","pinned":false,"hidden":false,"mode":"html"},{"id":1029,"value":"","pinned":false,"hidden":false,"mode":"html"},{"id":985,"value":"Plot.plot({\n marginLeft: 150,\n width: width,\n height: 200,\n caption: \"Source: UK Met Office\",\n x: {\n grid: true,\n insetLeft: 30,\n insetRight: 10,\n label: \"\",\n },\n y: {\n label: null,\n tickSize: 0,\n },\n r: {\n range: [5, 20]\n },\n color: {\n type: \"diverging\",\n legend: true,\n label: \"Million Square Kilometers\",\n range: [\"#fd78a3\", \"#71dbe5\"],\n domain: d3.extent(seaice, d => d.value),\n style: {\n background: \"#FFF2E6\"\n }\n },\n marks: [\n Plot.dot(seaice,\n {\n x: \"date\",\n y: \"source\",\n r: (d) => Math.abs(d.value),\n fill: \"value\",\n }),\n ],\n style: {\n background: \"#FFF2E6\",\n },\n})","pinned":false,"hidden":false,"mode":"ojs"},{"id":921,"value":"seaice = arcticIce_NSIDC.concat(arcticIce_OSI).filter(d => [2, 3, 4].includes(d.date.getUTCMonth()))","pinned":false,"hidden":false,"mode":"ojs"},{"id":854,"value":"arcticIce_OSI = { \n const data = await FileAttachment(\"arctic_ice_OSI SAF Sea Ice Index v2.1.csv\").csv({ typed: true });\n return data.map((d) => {\n return {\n date: new Date(d[\"Year\"], d[\"Month\"], 1),\n value: d[\"OSI SAF Sea Ice Index v2.1 (millionkm2)\"],\n uncertainty: d[\"OSI SAF Sea Ice Index v2.1 uncertainty\"],\n source: \"OSI SAF Sea Ice Index v2.1\",\n };\n })\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":857,"value":"arcticIce_NSIDC = { \n const data = await FileAttachment(\"arctic_ice_NSIDC v3.csv\").csv({ typed: true });\n return data.map((d) => {\n return {\n date: new Date(d[\"Year\"], d[\"Month\"], 1),\n value: d[\"NSIDC v3 (millionkm2)\"],\n uncertainty: d[\"NSIDC v3 uncertainty\"],\n source: \"NSIDC v3\",\n };\n })\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":1030,"value":"","pinned":false,"hidden":false,"mode":"html"}],"files":"$W31","stdlib":"1","titling":"auto"}

Changes in Spring Arctic Sea Ice Extent