in-situ measurements of atmospheric hydrofluorocarbons (hfcs) and perfluorocarbons (pfcs) at the shangdianzi regional background station, china
Clicks: 194
ID: 143959
2012
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This
article has not been analysed, so there is no overall score —
reader engagement is measured and shown alongside.
Reader Engagement
Steady Performance
30.0
/100
194 views
37 readers
AI Quality Assessment
Not analyzed
Readership in this journal
SteadyRanked #218 of 850 articles by views in Journal of agricultural and food chemistry
Most read
Least read
Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 850 in total.
Mint this article as an NFT
Not yet mintedCreate a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.
5
SUSD
one-off · no wallet required
Abstract
Atmospheric hydrofluorocarbons (HFCs) and perfluorocarbons (PFCs) were measured in-situ at the Shangdianzi (SDZ) Global Atmosphere Watch (GAW) regional background station, China, from May 2010 to May 2011. The time series for five HFCs and three PFCs showed occasionally high-concentration events while background conditions occurred for 36% (HFC-32) to 83% (PFC-218) of all measurements. The mean mixing ratios during background conditions were 24.5 ppt (parts per trillion, 10<sup>−12</sup>, molar) for HFC-23, 5.86 ppt for HFC-32, 9.97 ppt for HFC-125, 66.0 ppt for HFC-134a, 9.77 ppt for HFC-152a, 79.1 ppt for CF<sub>4</sub>, 4.22 ppt for PFC-116, and 0.56 ppt for PFC-218. The background mixing ratios for the compounds at SDZ are consistent with those obtained at mid to high latitude sites in the Northern Hemisphere. North-easterly winds were associated with negative contributions to atmospheric HFC and PFC loadings (mixing ratio anomalies weighted by time associated with winds in a given sector), whereas south-westerly advection (urban sector) showed positive loadings. Chinese emissions estimated by a tracer ratio method using carbon monoxide as tracer were 3.6 ± 3.2 kt yr<sup>−1</sup> for HFC-23, 4.3 ± 3.6 kt yr<sup>−1</sup> for HFC-32, 2.7 ± 2.3 kt yr<sup>−1</sup> for HFC-125, 6.0 ± 5.6 kt yr<sup>−1</sup> for HFC-134a, 2.0 ± 1.8 kt yr<sup>−1</sup> for HFC-152a, 2.4 ± 2.1 kt yr<sup>−1</sup> for CF<sub>4</sub>, 0.27 ± 0.26 kt yr<sup>−1</sup> for PFC-116, and 0.061 ± 0.095 kt yr<sup>−1</sup> for PFC-218. The lower HFC-23 emissions compared to earlier studies may be a result of the HFC-23 abatement measures taken as part of Clean Development Mechanism (CDM) projects that started in 2005.
| Reference Key |
yao2012atmosphericin-situ
Use this key to autocite in the manuscript while using
SciMatic Manuscript Manager or Thesis Manager
|
|---|---|
| Authors | ;B. Yao;M. K. Vollmer;L. X. Zhou;S. Henne;S. Reimann;P. C. Li;A. Wenger;M. Hill |
| Journal | Journal of agricultural and food chemistry |
| Year | 2012 |
| DOI |
10.5194/acp-12-10181-2012
|
| URL | |
| Keywords |
Citations
No citations found. To add a citation, contact the admin at info@scimatic.org
Comments
No comments yet. Be the first to comment on this article.