Spatial and temporal variablity of nonmethane hydrocarbon mixing ratios and their relation to photochemical lifetime
The relationship between temporal and spatial variability of C2-C8 nonmethane hydrocarbon mixing ratios and their HO lifetimes (τ) is presented for samples collected during the 1993 North Atlantic Regional Experiment (NARE) and from other urban and remote sites. The C2-C4 alkanes, acetylene and benz...
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1998
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ftcdlib:oai:escholarship.org/ark:/13030/qt1s36w15b 2023-05-15T17:32:53+02:00 Spatial and temporal variablity of nonmethane hydrocarbon mixing ratios and their relation to photochemical lifetime Jobson, BT Parrish, DD Goldan, P Kuster, W Fehsenfeld, FC Blake, DR Blake, NJ Niki, H 13557 - 13567 1998-06-20 application/pdf https://escholarship.org/uc/item/1s36w15b unknown eScholarship, University of California qt1s36w15b https://escholarship.org/uc/item/1s36w15b CC-BY CC-BY Journal of Geophysical Research Atmospheres, vol 103, iss D11 Meteorology & Atmospheric Sciences article 1998 ftcdlib 2021-06-20T14:23:05Z The relationship between temporal and spatial variability of C2-C8 nonmethane hydrocarbon mixing ratios and their HO lifetimes (τ) is presented for samples collected during the 1993 North Atlantic Regional Experiment (NARE) and from other urban and remote sites. The C2-C4 alkanes, acetylene and benzene typically define a trend of the form slnx=Aτ-b where slnx is the standard deviation of the ln of the mixing ratio. The relationship extended over a wider range of hydrocarbons in winter. The exponent b ranged in value from 0.2±0.023 for winter urban data where C2-C8 hydrocarbons defined a strongly correlated trend, to 0.56±0.15 for C2-C4 hydrocarbons at a coastal site in Nova Scotia during NARE. The trends are significantly different from that given by the Junge relationship [Junge, 1974]. Data from the Azores do not display such a trend and were likely influenced by local emissions. Variance trends are a useful analytical tool for examining the validity of hydrocarbon measurements. Article in Journal/Newspaper North Atlantic University of California: eScholarship |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Meteorology & Atmospheric Sciences |
spellingShingle |
Meteorology & Atmospheric Sciences Jobson, BT Parrish, DD Goldan, P Kuster, W Fehsenfeld, FC Blake, DR Blake, NJ Niki, H Spatial and temporal variablity of nonmethane hydrocarbon mixing ratios and their relation to photochemical lifetime |
topic_facet |
Meteorology & Atmospheric Sciences |
description |
The relationship between temporal and spatial variability of C2-C8 nonmethane hydrocarbon mixing ratios and their HO lifetimes (τ) is presented for samples collected during the 1993 North Atlantic Regional Experiment (NARE) and from other urban and remote sites. The C2-C4 alkanes, acetylene and benzene typically define a trend of the form slnx=Aτ-b where slnx is the standard deviation of the ln of the mixing ratio. The relationship extended over a wider range of hydrocarbons in winter. The exponent b ranged in value from 0.2±0.023 for winter urban data where C2-C8 hydrocarbons defined a strongly correlated trend, to 0.56±0.15 for C2-C4 hydrocarbons at a coastal site in Nova Scotia during NARE. The trends are significantly different from that given by the Junge relationship [Junge, 1974]. Data from the Azores do not display such a trend and were likely influenced by local emissions. Variance trends are a useful analytical tool for examining the validity of hydrocarbon measurements. |
format |
Article in Journal/Newspaper |
author |
Jobson, BT Parrish, DD Goldan, P Kuster, W Fehsenfeld, FC Blake, DR Blake, NJ Niki, H |
author_facet |
Jobson, BT Parrish, DD Goldan, P Kuster, W Fehsenfeld, FC Blake, DR Blake, NJ Niki, H |
author_sort |
Jobson, BT |
title |
Spatial and temporal variablity of nonmethane hydrocarbon mixing ratios and their relation to photochemical lifetime |
title_short |
Spatial and temporal variablity of nonmethane hydrocarbon mixing ratios and their relation to photochemical lifetime |
title_full |
Spatial and temporal variablity of nonmethane hydrocarbon mixing ratios and their relation to photochemical lifetime |
title_fullStr |
Spatial and temporal variablity of nonmethane hydrocarbon mixing ratios and their relation to photochemical lifetime |
title_full_unstemmed |
Spatial and temporal variablity of nonmethane hydrocarbon mixing ratios and their relation to photochemical lifetime |
title_sort |
spatial and temporal variablity of nonmethane hydrocarbon mixing ratios and their relation to photochemical lifetime |
publisher |
eScholarship, University of California |
publishDate |
1998 |
url |
https://escholarship.org/uc/item/1s36w15b |
op_coverage |
13557 - 13567 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Journal of Geophysical Research Atmospheres, vol 103, iss D11 |
op_relation |
qt1s36w15b https://escholarship.org/uc/item/1s36w15b |
op_rights |
CC-BY |
op_rightsnorm |
CC-BY |
_version_ |
1766131194460635136 |