{"title":"Long–Term Characteristics of Ambient Trace gases and Meteorology in Delhi, India","authors":"S. K. Sharma, Manisha","doi":"10.1007/s12647-024-00773-y","DOIUrl":null,"url":null,"abstract":"<p>The present study examined the long–term characteristics and relationship of atmospheric ammonia (NH<sub>3</sub>) with other trace gases (NO, NO<sub>2</sub>, SO<sub>2</sub> and CO) at highly polluted urban agglomeration of Delhi, India. Measurements of ambient trace gases (NH<sub>3</sub>, NO, NO<sub>2</sub>, SO<sub>2</sub>, and CO) and meteorology were recorded at the observational site of Delhi from 2011–2022. Overall mean mixing ratios of ambient NH<sub>3</sub>, NO, NO<sub>2</sub>, SO<sub>2</sub> and CO were 18.9 ± 5.0 ppb, 19.9 ± 4.8 ppb, 19.1 ± 5.3 ppb, 2.15 ± 0.38 ppb, and 1.47 ± 0.42 ppm, respectively during 2011—2022. During study, a significant diurnal and seasonal variation in mixing ratios of NH<sub>3</sub>, NO, NO<sub>2</sub>, and CO were observed except SO<sub>2</sub> mixing ratio. During all the seasons, the mixing ratios of trace gases were observed higher during nighttime and lower during daytime. Correlation analysis reveals that the higher loading of NO, NO<sub>2</sub> and CO influenced the mixing ratio of NH<sub>3</sub> at the study site of Delhi.</p>","PeriodicalId":689,"journal":{"name":"MAPAN","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"MAPAN","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s12647-024-00773-y","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}
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Abstract
The present study examined the long–term characteristics and relationship of atmospheric ammonia (NH3) with other trace gases (NO, NO2, SO2 and CO) at highly polluted urban agglomeration of Delhi, India. Measurements of ambient trace gases (NH3, NO, NO2, SO2, and CO) and meteorology were recorded at the observational site of Delhi from 2011–2022. Overall mean mixing ratios of ambient NH3, NO, NO2, SO2 and CO were 18.9 ± 5.0 ppb, 19.9 ± 4.8 ppb, 19.1 ± 5.3 ppb, 2.15 ± 0.38 ppb, and 1.47 ± 0.42 ppm, respectively during 2011—2022. During study, a significant diurnal and seasonal variation in mixing ratios of NH3, NO, NO2, and CO were observed except SO2 mixing ratio. During all the seasons, the mixing ratios of trace gases were observed higher during nighttime and lower during daytime. Correlation analysis reveals that the higher loading of NO, NO2 and CO influenced the mixing ratio of NH3 at the study site of Delhi.
期刊介绍：
MAPAN-Journal Metrology Society of India is a quarterly publication. It is exclusively devoted to Metrology (Scientific, Industrial or Legal). It has been fulfilling an important need of Metrologists and particularly of quality practitioners by publishing exclusive articles on scientific, industrial and legal metrology.
The journal publishes research communication or technical articles of current interest in measurement science; original work, tutorial or survey papers in any metrology related area; reviews and analytical studies in metrology; case studies on reliability, uncertainty in measurements; and reports and results of intercomparison and proficiency testing.
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