{"id":2687,"date":"2024-07-16T12:33:46","date_gmt":"2024-07-16T10:33:46","guid":{"rendered":"https:\/\/urbag.eu\/?p=2687"},"modified":"2024-07-16T12:33:46","modified_gmt":"2024-07-16T10:33:46","slug":"new-publication-in-urban-forestry-urban-greening","status":"publish","type":"post","link":"https:\/\/webs.uab.cat\/atmosphere\/2024\/07\/16\/new-publication-in-urban-forestry-urban-greening\/","title":{"rendered":"New publication in “Urban Forestry & Urban Greening”"},"content":{"rendered":"

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See full article\/ Veure l’article complet<\/strong><\/a><\/p>\n

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English:<\/strong><\/p>\n

Monitoring CO2<\/sub>\u00a0concentrations in urban areas is crucial for determining the efficacy of climate change mitigation policies. However, highly heterogeneous land use, local geography, and local convection patterns, which vary throughout the urban landscape, complicate this task. To establish continuous monitoring programs, it is important to first determine the heterogeneity of urban landscapes on the ground. To understand the role these factors play in the distribution of CO2<\/sub>\u00a0over an urban area, we conducted a CO2<\/sub>\u00a0measurement campaign over the Metropolitan Area of Barcelona (AMB) over four urban land uses: impervious, green, forest, and agricultural. There is a clear tendency for CO2<\/sub>\u00a0mixing ratios to decrease as the degree of urban vegetation increases, even in the midst of a developed boundary layer. For example, CO2<\/sub>\u00a0concentrations were 429 and 427\u202fppm at forest and agricultural sites, respectively, while 485\u202fppm was reported at urban sites. A decrease in atmospheric CO2<\/sub>\u00a0was observed from 458 to 428\u202fppm in the gradient from urban to suburban areas, in which the biosphere component increased. The biosphere component of the CO2<\/sub>\u00a0signal was significant and was observed in the gradient from urban to suburban areas, which averaged a reduction from 458 to 428\u202fppm. Our findings show that the large spatial variability in CO2<\/sub>\u00a0concentrations (ranging from 410 to 495\u202fppm) is best explained by anthropogenic activity. We propose increasing the spatiotemporal resolution of CO2<\/sub>\u00a0monitoring in the AMB to determine these trends more precisely over longer periods of time.<\/p>\n

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Catal\u00e0:<\/strong><\/p>\n

El monitoratge de les concentracions de CO\u2082 a les zones urbanes \u00e9s crucial per determinar l’efic\u00e0cia de les pol\u00edtiques de mitigaci\u00f3 del canvi clim\u00e0tic. No obstant aix\u00f2, l’\u00fas del s\u00f2l altament heterogeni, la geografia local i els patrons de convecci\u00f3 local, que varien al llarg de l’entramat urb\u00e0, compliquen aquesta tasca. Per establir programes de seguiment continu, \u00e9s important primer determinar l’heterogene\u00eftat dels paisatges urbans sobre el terreny. Per comprendre el paper que aquests factors juguen en la distribuci\u00f3 del CO\u2082 sobre una \u00e0rea urbana, vam dur a terme una campanya de mesurament de CO\u2082 a l’\u00c0rea Metropolitana de Barcelona (AMB) sobre quatre usos del s\u00f2l urb\u00e0: impermeable, verd, forestal i agr\u00edcola. Hi ha una clara tend\u00e8ncia que les r\u00e0tios de mescla de CO\u2082 disminueixin a mesura que augmenta el grau de vegetaci\u00f3 urbana, fins i tot enmig d’una capa l\u00edmit desenvolupada. Per exemple, les concentracions de CO\u2082 eren de 429 i 427 ppm als llocs forestals i agr\u00edcoles, respectivament, mentre que es va reportar 485 ppm als llocs urbans. Es va observar una disminuci\u00f3 del CO\u2082 atmosf\u00e8ric de 458 a 428 ppm en el gradient d’urb\u00e0 a suburb\u00e0, on la component de la biosfera augmentava. La component de la biosfera del senyal de CO\u2082 va ser significativa i es va observar en el gradient d’urb\u00e0 a suburb\u00e0, que va registrar una reducci\u00f3 mitjana de 458 a 428 ppm. Els nostres resultats mostren que la gran variabilitat espacial en les concentracions de CO\u2082 (que oscil\u00b7len entre 410 i 495 ppm) s’explica millor per l’activitat antropog\u00e8nica. Proposem augmentar la resoluci\u00f3 espaciotemporal del seguiment del CO\u2082 a l’AMB per determinar aquestes tend\u00e8ncies amb m\u00e9s precisi\u00f3 durant per\u00edodes de temps m\u00e9s llargs.<\/p>\n

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Figure: Map of the metropolitan area of Barcelona showing the sampling sites. A) Land-use map with sampling locations in the AMB, based on\u00a0Mendoza et al. (2023)<\/span><\/span><\/a>. Each sampling site is represented by a color, and the three locations of each color represent the upwind site, sampling site, and downwind site locations. B) Orographic map; different colors indicate meters above sea level (m.a.s.l.). The mountain range in the northern part of Panel A is Collserola, and the mountainous area that delimits the southwestern part in Panel A is the El Garraf mountain range.<\/p>\n","protected":false},"excerpt":{"rendered":"

Title: Exploring how the heterogeneous urban landscape influences CO2 concentrations: The case study of the Metropolitan Area of Barcelona\/
\nTo understand the role these factors play in the distribution of CO2\u00a0over an urban area, we conducted a CO2\u00a0measurement campaign over the Metropolitan Area of Barcelona (AMB) over four urban land uses: impervious, green, forest, and agricultural.<\/p>\n","protected":false},"author":3153,"featured_media":1749,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[7,329,229,16,330,21,331,332,333,334,335,248],"class_list":["post-2687","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","tag-amb","tag-amthropogenic-activity","tag-article","tag-barcelona","tag-campanya-de-mesures","tag-co2","tag-concentracions-de-co2","tag-measurement-campaign","tag-metropolitan-area-of-barcelona","tag-monitoratge","tag-monitoring","tag-vegetation"],"_links":{"self":[{"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/posts\/2687","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/users\/3153"}],"replies":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/comments?post=2687"}],"version-history":[{"count":0,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/posts\/2687\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/media\/1749"}],"wp:attachment":[{"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/media?parent=2687"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/categories?post=2687"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/tags?post=2687"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}