{"id":79908,"date":"2026-10-28T14:57:27","date_gmt":"2026-10-28T13:57:27","guid":{"rendered":"https:\/\/nilu.gnist.dev\/publikasjoner\/evaluation-of-urban-scale-time-dependent-dispersion-model-with-subgrid-elements-in-oslo-norway\/"},"modified":"2026-10-28T14:57:27","modified_gmt":"2026-10-28T13:57:27","slug":"evaluation-of-urban-scale-time-dependent-dispersion-model-with-subgrid-elements-in-oslo-norway","status":"publish","type":"nva_publication","link":"https:\/\/nilu.gnist.dev\/en\/publications\/evaluation-of-urban-scale-time-dependent-dispersion-model-with-subgrid-elements-in-oslo-norway\/","title":{"rendered":"Evaluation of urban scale time-dependent dispersion model with subgrid elements, in Oslo, Norway."},"content":{"rendered":"<p class=\"wp-block-paragraph\">Hourly data on emission, wind and dispersion conditions are used to calculate hourly NOx-concentrations in a 1 km grid system based on a time dependent finite difference dispersion model in three levels. The pollution contribution from roads and point sources are accounted for by a subgrid model based on Gaussian line source and point source models. Results of concentration calculations are evaluated by using data from eight stations for three winter months (1.11.91-29.2.92) and from the three main stations for two summer months (1.5.-30.6.92). The relative importance of the prosesses affecting the NO2-concentrations in an urban area as a function of advection time from a line source are discussed. A balance between NO, NO2 and O3 is found when the advection time is larger than 600-1000 s. The high NO2-concentrations occur when the O3-concentrations are very low.<\/p>\n","protected":false},"template":"","meta":{"_acf_changed":false,"_searchwp_excluded":"","_id":"","_status":"PUBLISHED","_sync_date":"2026-10-27 15:06:48","footnotes":""},"nva_tax_category":[923],"class_list":["post-79908","nva_publication","type-nva_publication","status-publish","hentry","nva_tax_category-report"],"acf":[],"_links":{"self":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication\/79908","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication"}],"about":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/types\/nva_publication"}],"version-history":[{"count":0,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication\/79908\/revisions"}],"wp:attachment":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/media?parent=79908"}],"wp:term":[{"taxonomy":"nva_tax_category","embeddable":true,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_tax_category?post=79908"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}