{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T23:28:08Z","timestamp":1790033288941,"version":"4.0.1"},"reference-count":53,"publisher":"American Association for the Advancement of Science (AAAS)","issue":"6181","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Science"],"published-print":{"date-parts":[[2014,4,18]]},"abstract":"<jats:title>On a Zeppelin<\/jats:title>\n          <jats:p>\n            Nitrous acid (HONO) is an important atmospheric trace gas that acts as a precursor of tropospheric hydroxyl-radicals (OH), which is responsible for the self-cleansing capacity of the atmosphere and which also controls the concentrations of greenhouse gases, such as methane and ozone. How HONO is made is a mystery. Flying onboard a Zeppelin over the Po Valley in Northern Italy,\n            <jats:bold>\n              Li\n              <jats:italic>et al.<\/jats:italic>\n            <\/jats:bold>\n            (p.\n            <jats:related-article xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"doi\" issue=\"6181\" page=\"292\" related-article-type=\"in-this-issue\" vol=\"344\" xlink:href=\"10.1126\/science.1248999\">292<\/jats:related-article>\n            ) discovered HONO in the undisturbed morning troposphere, indicating that HONO must be produced there, rather than mixed from the surface. The high HONO concentrations are likely to have been formed by a light-dependent gas-phase source that probably consumed OH or HO2 radicals, which hints that the impact of HONO on the abundance of OH in the entire troposphere may be substantially overestimated.\n          <\/jats:p>","DOI":"10.1126\/science.1248999","type":"journal-article","created":{"date-parts":[[2014,4,17]],"date-time":"2014-04-17T18:44:35Z","timestamp":1397760275000},"page":"292-296","source":"Crossref","is-referenced-by-count":163,"title":["Missing Gas-Phase Source of HONO Inferred from Zeppelin Measurements in the Troposphere"],"prefix":"10.1126","volume":"344","author":[{"given":"Xin","family":"Li","sequence":"first","affiliation":[{"name":"Institut f\u00fcr Energie-und Klimaforschung: Troposph\u00e4re (IEK-8), Forschungszentrum J\u00fclich, J\u00fclich, Germany."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Franz","family":"Rohrer","sequence":"additional","affiliation":[{"name":"Institut 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