{"id":2392,"date":"2023-12-22T12:10:56","date_gmt":"2023-12-22T10:10:56","guid":{"rendered":"https:\/\/urbag.eu\/?p=2392"},"modified":"2023-12-22T12:10:56","modified_gmt":"2023-12-22T10:10:56","slug":"new-publication-in-jgr-atmospheres","status":"publish","type":"post","link":"https:\/\/webs.uab.cat\/atmosphere\/2023\/12\/22\/new-publication-in-jgr-atmospheres\/","title":{"rendered":"New publication in “JGR Atmospheres”"},"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

Carbonyl sulfide (OCS) is used to quantify the carbon capture potential of the biosphere because of its direct correlation with CO2 uptake during photosynthesis. However, to constrain the urban biosphere signal, it is necessary to evaluate potential anthropogenic sources. We conducted two sampling campaigns in the Metropolitan Area of Barcelona (AMB), Spain, during May (full COVID lockdown) and October 2020 to measure the spatial distribution and variability of OCS in four urban land uses as follows: built, urban forest, urban park, and peri-urban agriculture. The OCS background levels determined at Tibidabo (442 m asl) were approximately 484 \u00b1 20 ppt and 407 \u00b1 8 ppt for May and October 2020, respectively, and agreed with other seasonal surveys conducted in Europe during that same period. Averaged emissions were in the range of +\u039412 \u00b1 40 ppt for the city and were +\u03949.4 \u00b1 40.9 ppt for urban +\u039422.1 \u00b1 48 ppt for urban green +\u039420.7 \u00b1 42.9 ppt for agricultural and \u2212\u03944.8 \u00b1 19.6 ppt for forest. The urban values ranged from neutral to above background, suggesting nearby anthropogenic and marine emissions such as +\u0394150 ppt in Montjuic, which is downwind of Barcelona’s harbor. During the crop-growing season in May, the agricultural areas consistently showed values below the background (up to \u2212\u039476 ppt in Gav\u00e0, uptake) at 7:00 UTC when the land breezes were dominant, while later in the morning, when the sea breeze are developed, the plant sink is masked by the transport of marine emissions. Urban forests located north of Tibidabo showed OCS values up to \u2212\u039470 ppt, suggesting significant uptake by urban forests. We conclude that determining the urban biosphere signal using OCS as a tracer is more complex than expected because the marine and anthropogenic emissions from the port strongly impact the spatial-temporal distribution of OCS.<\/p>\n

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

El sulfur de carbonil (OCS) s’utilitza per quantificar el potencial de captura de carboni de la biosfera a causa de la seva correlaci\u00f3 directa amb l’absorci\u00f3 de CO2 durant la fotos\u00edntesi. No obstant aix\u00f2, per restringir el senyal de la biosfera urbana, cal avaluar possibles fonts antropog\u00e8niques. Vam dur a terme dues campanyes de mostreig a l’\u00c0rea Metropolitana de Barcelona (AMB) durant els mesos de maig (confinament total per COVID) i octubre de 2020 per mesurar la distribuci\u00f3 espacial i la variabilitat de l’OCS en quatre usos urbans del s\u00f2l de la seg\u00fcent manera: urb\u00e0, bosc urb\u00e0, parc urb\u00e0 i agricultura periurbana. Els nivells base de l’OCS determinats al Tibidabo (442 m s.n.m.) van ser d’aproximadament 484 \u00b1 20 ppt i 407 \u00b1 8 ppt per al maig i l’octubre del 2020, respectivament, i van coincidir amb altres enquestes estacionals realitzades a Europa durant aquest mateix per\u00edode. Les emissions mitjanes es van situar en el rang de +\u039412 \u00b1 40 ppt per a la ciutat i van ser de +\u03949,4 \u00b1 40,9 ppt per a les zones urbanes, +\u039422,1 \u00b1 48 ppt per al verd urb\u00e0, +\u039420,7 \u00b1 42,9 ppt per a l’agr\u00edcola i -\u03944,8 \u00b1 19,6 ppt per al bosc. Els valors urbans registraven valors entre neutres i elevats, cosa que suggereix emissions antropog\u00e8niques i marines properes, com ara +\u0394150 ppt a Montju\u00efc, que es troba a sotavent del port de Barcelona. Durant la temporada de cultiu al maig, les zones agr\u00edcoles van mostrar constantment valors per sota dels base (fins a -\u039476 ppt a Gav\u00e0, captaci\u00f3) a les 7:00 UTC quan les brises terrestres eren dominants, mentre que m\u00e9s tard al mat\u00ed, quan es desenvolupa la brisa marina, l’embornal de la planta queda emmascarat pel transport d’emissions marines. Els boscos urbans situats al nord del Tibidabo van mostrar valors OCS de fins a -\u039470 ppt, el que suggereix una absorci\u00f3 significativa per part dels boscos urbans. Concloem que determinar el senyal de la biosfera urbana utilitzant OCS com a tra\u00e7ador \u00e9s m\u00e9s complex del que s’esperava perqu\u00e8 les emissions marines i antropog\u00e8niques del port afecten fortament la distribuci\u00f3 espai-temporal dels OCS.<\/p>\n

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Area of study and sampling points\u00a0<\/b><\/em><\/p>\n

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Title: Exploring the Influence of Land Use on the Urban Carbonyl Sulfide Budget: A Case Study of the Metropolitan Area of Barcelona \/<\/p>\n

Carbonyl sulfide (OCS) is used to quantify the carbon capture potential of the biosphere because of its direct correlation with CO2 uptake during photosynthesis. However, to constrain the urban biosphere signal, it is necessary to evaluate potential anthropogenic sources. <\/p>\n","protected":false},"author":3153,"featured_media":2420,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[199,7,16,268,80,21,269,33,81,233,103],"class_list":["post-2392","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","tag-agricultural","tag-amb","tag-barcelona","tag-breeze","tag-carbonyl-sulfide","tag-co2","tag-covid","tag-emissions","tag-ocs","tag-paper","tag-urban"],"_links":{"self":[{"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/posts\/2392","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=2392"}],"version-history":[{"count":0,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/posts\/2392\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/media\/2420"}],"wp:attachment":[{"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/media?parent=2392"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/categories?post=2392"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/tags?post=2392"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}