CO2 emissions in cities

Reducing CO2 in cities challenge for The Climate Reality Project Canada
Project submission as part of Climate Crisis AI Hackathon by AI Launch Lab
Dataset description: "The global data set used for this challenge was assembled by the Carbon Disclosure Project and includes municipal greenhouse gas emissions data submitted to the CDP between 2016 and 2020 and covering years ranging from 1990-2019. This excel workbook includes the CDP’s raw data [...] (used in this challenge)."
Full project description: here

How to read & interact with this viz

  • Circles of the nodes of the graph have a radius and colour corresponding to the mean CO2 emissions of the city across all years where it appears in the dataset. Bigger = more avg emissions.

  • Click on each circle to reveal information about the city in a separate visualisation. Note that these are not available for the greyed-out cities due to insufficient data.

  • The visualisation for each city contains information about the avg carbon emissions of the city (radius of the surrounding circle), as well as emissions trends over time. Click on each year's point for more information, including methodology.
click on a citybubble to select itNorth AmericaLatin AmericaEast AsiaSouth and West AsiaSouth Asia and OceaniaSoutheast Asia and OceaniaAfricaEuropeUSACanadaArgentinaMexicoChileBrazilPeruColombiaEcuadorUruguayJapanTaiwanRepublic of KoreaHong KongIndiaJordanIsraelState of PalestineSingaporeIndonesiaVietnamMalaysiaNew ZealandAustraliaPhilippinesPhilippinesNigeriaSouth AfricaEthiopiaComorosTurkeyUnited KingdomNetherlandsRussiaPolandItalySpainFranceBulgariaGreeceGermanyFinlandSloveniaLithuaniaSwedenPortugalDenmarkSwitzerlandNorwayIcelandGibraltarNew York CityHoustonChicagoLas VegasLos AngelesBrowardDallasPhiladelphiaMemphisLouisvilleSan AntonioPhoenixNashville and Davidson San DiegoAustinColumbusKansas CityCharlotteDetroitClevelandAtlantaSt LouisIndianapolisWashington, DCCincinnatiBaltimorePortland, OROrlandoBostonDenverSan FranciscoPittsburghSalt Lake CityDurhamMinneapolisGreensboroKnoxvilleNew OrleansSeattleBoulder CountySavannahRenoAnchorageTempe, AZRichmond, VALong BeachColumbia, MOSt. PetersburgArlington, VAOaklandArlingtonBrownsvilleFort CollinsRoanokeColumbia, SCRochesterSanta Fe CountyProvidenceBoulderLakewoodDenton, TXWest Palm BeachCambridgeBloomingtonFayetteville, AREugeneFremontAnn ArborFlagstaffAlbanyChula VistaMiami Beach, FLNew Haven Portland, MEIowa HaywardTacomaEvanstonSanta MonicaLancasterSarasotaSan Leandro, CAAbington Somerville, MAWest HollywoodBerkeleyCharlottesville, VANew BedfordAlamedaMedfordBeniciaBurlingtonLake Forest, ILAltonLancaster, PABlacksburgDavis, CAEaston, PAAspenCupertinoManhattan BeachEmeryville, CAPalo AltoBrisbane, CALos Altos HillsPiedmont, CAWellfleetPark CityTorontoCalgaryEdmontonHamiltonMontrealMississaugaOttawaWinnipegHalifaxSaskatoonLondon, ONVancouverLavalWindsorGuelphSt Catharines, ONAjax, ONSalaberry-de-ValleyfieldPeterboroughNorth VancouverMendozaBuenos AiresCórdobaRio GrandeGeneral Alvear, Buenos AiresMexico CityChihuahuaHermosilloLeón de los AldamasGuadalajaraMéridaSantiagoValdiviaRio de JaneiroSão PauloBrasìliaBelo HorizonteSão José dos CamposCuritibaSalvadorPorto AlegreRecifeGoiâniaBetimNiteróiVitóriaJoão PessoaLondrinaAracajuSorocabaFlorianópolisPorto VelhoPalmasExtremaLimaSan Isidro (Lima)Bogotá Santiago de CaliIbaguéMonterìaBeteitivaSantiago de GuayaquilQuitoLojaMontevideoTokyoYokohamaNagoyaKaohsiungTaoyuanTaichungTainan New Taipei TaipeiYilan CountyPingtung SeoulChangwonSuwonHong KongChennaiAmman Tel Aviv-Yafo Abasan Al-KabiraSingapore Jakarta Bogor Ho Chi MinhIskandar Auckland WellingtonMelbourneCanberraSydneyAdelaideHobartByron ShireQuezon CityMakatiParañaqueBatangasQuezon CityMakatiParañaqueBatangasLagosJohannesburgDurbanCape TownPretoria - TshwaneNelson Mandela Bay Addis AbabaMoroniIstanbul KadiovacikLondon ManchesterCardiffLeicesterBournemouthRotterdamAmsterdamThe HagueGroningenMoscow WarsawWroclawRomaMilanoTorinoBolognaVeneziaGenovaFirenzeFerraraUdineMadridBarcelonaZaragozaParisNiceNancySofiaAthensMannheimMagdeburgHeidelbergHelsinkiEspooTurkuLahtiLjubljanaVilnius StockholmMalmöLisbonPortoCascaisGuimarãesSantarémBarreiroTorres Vedras FafeSonderborgAarhusCopenhagenHjørringGladsaxeElsinoreHoeje-TaastrupHvidovreHelsingørEgedalHørsholmZürichBasel-StadtBaselNyonOsloBærumArendalReykjavìkGibraltarTokyo63Mavg emissions / year2013201420152016201760M65M70MTotal emissions (metric tonnes CO2e)

Notes on the data

  • The reporting period of the data is not the same for all the cities. Some had data for more than 3 years, and some only 1-2; these years were not always the same for all the cities, making an exact comparison between all cities challenging. However, the majority of the data was for the 5-year period 2013-2017. There are 6 cities with 5 or more years of data, 22 cities with 4 or more years, 67 cities with 3 or more and 144 cities with 2 or more.
  • A few countries, such as Australia, were categorised in more than one region. When that was the case, only the data for one of the regions was taken; it is possible than by doing so some of the data was omitted.
  • For the visualisation cities with at least 2 records were selected.

Disclaimer! There are bound to be bugs and mistakes in the data for this visualisation. The current version is a very quick hackathon prototype and neither the data cleaning process nor the code have been reviewed. "CO2/carbon emissions" might include other emissions as well. I am not a domain expert. Please view this as a proof of concept.
* Best viewed on a laptop/desktop screen.
Co2 icon at the top by Jino from NounProject.com

made by Dea Bankova in 2021