{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,20]],"date-time":"2026-03-20T08:45:34Z","timestamp":1773996334100,"version":"3.50.1"},"reference-count":23,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2021,7,31]],"date-time":"2021-07-31T00:00:00Z","timestamp":1627689600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100008530","name":"European Regional Development Fund","doi-asserted-by":"publisher","award":["UIA 022 Air Heritage"],"award-info":[{"award-number":["UIA 022 Air Heritage"]}],"id":[{"id":"10.13039\/501100008530","id-type":"DOI","asserted-by":"publisher"}]},{"name":"H2020 Flag-ERA","award":["JTC-2016_003 CONVERGENCE"],"award-info":[{"award-number":["JTC-2016_003 CONVERGENCE"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A pervasive assessment of air quality in an urban or mobile scenario is paramount for personal or city-wide exposure reduction action design and implementation. The capability to deploy a high-resolution hybrid network of regulatory grade and low-cost fixed and mobile devices is a primary enabler for the development of such knowledge, both as a primary source of information and for validating high-resolution air quality predictive models. The capability of real-time and cumulative personal exposure monitoring is also considered a primary driver for exposome monitoring and future predictive medicine approaches. Leveraging on chemical sensing, machine learning, and Internet of Things (IoT) expertise, we developed an integrated architecture capable of meeting the demanding requirements of this challenging problem. A detailed account of the design, development, and validation procedures is reported here, along with the results of a two-year field validation effort.<\/jats:p>","DOI":"10.3390\/s21155219","type":"journal-article","created":{"date-parts":[[2021,8,1]],"date-time":"2021-08-01T21:46:44Z","timestamp":1627854404000},"page":"5219","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":29,"title":["Crowdsensing IoT Architecture for Pervasive Air Quality and Exposome Monitoring: Design, Development, Calibration, and Long-Term Validation"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0745-924X","authenticated-orcid":false,"given":"Saverio","family":"De Vito","sequence":"first","affiliation":[{"name":"ENEA CR-Portici, TERIN-FSD Division, P. le E. Fermi 1, 80055 Portici, Italy"}]},{"given":"Elena","family":"Esposito","sequence":"additional","affiliation":[{"name":"ENEA CR-Portici, TERIN-FSD Division, P. le E. Fermi 1, 80055 Portici, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0613-9455","authenticated-orcid":false,"given":"Ettore","family":"Massera","sequence":"additional","affiliation":[{"name":"ENEA CR-Portici, TERIN-FSD Division, P. le E. Fermi 1, 80055 Portici, Italy"}]},{"given":"Fabrizio","family":"Formisano","sequence":"additional","affiliation":[{"name":"ENEA CR-Portici, TERIN-FSD Division, P. le E. Fermi 1, 80055 Portici, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1337-491X","authenticated-orcid":false,"given":"Grazia","family":"Fattoruso","sequence":"additional","affiliation":[{"name":"ENEA CR-Portici, TERIN-FSD Division, P. le E. Fermi 1, 80055 Portici, Italy"}]},{"given":"Sergio","family":"Ferlito","sequence":"additional","affiliation":[{"name":"ENEA CR-Portici, TERIN-FSD Division, P. le E. Fermi 1, 80055 Portici, Italy"}]},{"given":"Antonio","family":"Del Giudice","sequence":"additional","affiliation":[{"name":"ENEA CR-Portici, TERIN-FSD Division, P. le E. Fermi 1, 80055 Portici, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3828-3192","authenticated-orcid":false,"given":"Gerardo","family":"D\u2019Elia","sequence":"additional","affiliation":[{"name":"ENEA CR-Portici, TERIN-FSD Division, P. le E. Fermi 1, 80055 Portici, Italy"}]},{"given":"Maria","family":"Salvato","sequence":"additional","affiliation":[{"name":"ENEA CR-Portici, TERIN-FSD Division, P. le E. Fermi 1, 80055 Portici, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7482-2398","authenticated-orcid":false,"given":"Tiziana","family":"Polichetti","sequence":"additional","affiliation":[{"name":"ENEA CR-Portici, TERIN-FSD Division, P. le E. 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