{"title":"中高层大气中一氧化氮的光解作用","authors":"K. Minschwaner, V. Starke","doi":"10.1016/S1464-1917(01)00043-5","DOIUrl":null,"url":null,"abstract":"<div><p>Absorption of solar radiation of wavelengths between 175 to 205 nm plays a fundamental role in the photochemistry of the middle atmosphere. Nitric oxide photodissociates in the δ(0-0) and δ(1-0) bands near 191 and 183 nm, respectively, initiating the primary mechanisms for NO<sub>x</sub> removal in the middle atmosphere. The spectrally rich Schumann-Runge (S-R) bands of O<sub>2</sub> are the main source of atmospheric opacity at these wavelengths. A re-evaluation of O<sub>2</sub> absorption has been made based on recent advances in understanding of S-R line shapes, leading to differences with conventional approaches assuming Voigt line profiles in line-by-line calculations of the O<sub>2</sub> cross section. The new results are used to examine the impact of O<sub>2</sub> transmission on the photodissociation of NO in the δ(0,0) and δ(1,0) bands.</p></div>","PeriodicalId":101026,"journal":{"name":"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science","volume":"26 7","pages":"Pages 539-543"},"PeriodicalIF":0.0000,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1917(01)00043-5","citationCount":"1","resultStr":"{\"title\":\"Photodissociation of nitric oxide in the middle and upper atmosphere\",\"authors\":\"K. Minschwaner, V. Starke\",\"doi\":\"10.1016/S1464-1917(01)00043-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Absorption of solar radiation of wavelengths between 175 to 205 nm plays a fundamental role in the photochemistry of the middle atmosphere. Nitric oxide photodissociates in the δ(0-0) and δ(1-0) bands near 191 and 183 nm, respectively, initiating the primary mechanisms for NO<sub>x</sub> removal in the middle atmosphere. The spectrally rich Schumann-Runge (S-R) bands of O<sub>2</sub> are the main source of atmospheric opacity at these wavelengths. A re-evaluation of O<sub>2</sub> absorption has been made based on recent advances in understanding of S-R line shapes, leading to differences with conventional approaches assuming Voigt line profiles in line-by-line calculations of the O<sub>2</sub> cross section. The new results are used to examine the impact of O<sub>2</sub> transmission on the photodissociation of NO in the δ(0,0) and δ(1,0) bands.</p></div>\",\"PeriodicalId\":101026,\"journal\":{\"name\":\"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science\",\"volume\":\"26 7\",\"pages\":\"Pages 539-543\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S1464-1917(01)00043-5\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1464191701000435\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1464191701000435","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Photodissociation of nitric oxide in the middle and upper atmosphere
Absorption of solar radiation of wavelengths between 175 to 205 nm plays a fundamental role in the photochemistry of the middle atmosphere. Nitric oxide photodissociates in the δ(0-0) and δ(1-0) bands near 191 and 183 nm, respectively, initiating the primary mechanisms for NOx removal in the middle atmosphere. The spectrally rich Schumann-Runge (S-R) bands of O2 are the main source of atmospheric opacity at these wavelengths. A re-evaluation of O2 absorption has been made based on recent advances in understanding of S-R line shapes, leading to differences with conventional approaches assuming Voigt line profiles in line-by-line calculations of the O2 cross section. The new results are used to examine the impact of O2 transmission on the photodissociation of NO in the δ(0,0) and δ(1,0) bands.