Abstract:
:We evaluate the impact of anthropogenic and natural NO(x) sources over the contiguous United States on tropospheric NO(x) and O(3) levels by using a global 3D chemical transport model. The effects of major U.S. surface NO(x) emission sources (including anthropogenic, biomass burning, and soil emissions) are compared with that of lightning-produced NO(x). Summer lightning is shown to play a dominant role in controlling NO(x) and O(3) concentrations in the middle and upper troposphere, despite the fact that fossil-fuel burning represents the largest source of NO(x) over the U.S. Furthermore, the effect of regional U.S. lightning is propagated through large areas of the Northern Hemisphere by atmospheric circulation. The results reveal that a thorough assessment of atmospheric NO(x) emission sources and their impact is required to devise control strategies for regional and global air pollution.
journal_name
Proc Natl Acad Sci U S Aauthors
Zhang R,Tie X,Bond DWdoi
10.1073/pnas.252763799keywords:
subject
Has Abstractpub_date
2003-02-18 00:00:00pages
1505-9issue
4eissn
0027-8424issn
1091-6490pii
252763799journal_volume
100pub_type
杂志文章abstract::Molecular hybridization with (125)I-labeled citrus exocortis viroid RNA has been used to survey nucleic acid preparations from Gynura aurantiaca for viroid complementary molecules. A differential hybridization effect was detected between nucleic acid extracts from healthy and infected tissue in which significant RNase...
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doi:10.1073/pnas.79.2.223
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doi:10.1073/pnas.1714254115
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
pub_type: 杂志文章
doi:10.1073/pnas.110146697
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
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更新日期:2013-04-02 00:00:00
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
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