The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
An unexpected catalyst dominates formation and radiative forcing of regional haze
Open accessAbstract
Significance: Regional haze adversely affects human health and possibly counteracts global warming by greenhouse gases, but its formation and radiative forcing remain unclear. Here we present field measurements to show reduced frequency but not severity for heavy haze and little-improved moderate haze, when SO 2 is significantly reduced in China. Our laboratory experiments identify black carbon (BC)-catalyzed sulfate formation involving NO 2 and NH 3 . Radiative transfer calculations accounting for this BC chemistry indicate small net climatic cooling/warming but large surface cooling, atmospheric heating, and air stagnation. Our work reveals that this BC catalytic chemistry dominates the formation, trend, and radiative forcing of regional haze, suggesting the necessity of simultaneous reduction in emissions of SO 2 , NO x , NH 3 , and BC for air-quality improvement.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Formation of Urban Fine Particulate Matter
Zhang, R., Wang, G., Guo, S., Zamora, M. L., Ying, Q., Lin, Y., Wang, W., Hu, M., & Wang, Y. (2015) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00067 · Cited by 1,426
Self-citationIn utero ultrafine particulate matter exposure causes offspring pulmonary immunosuppression
Rychlik, K. A., Secrest, J. R., Lau, C., Pulczinski, J., Zamora, M. L., Leal, J., Langley, R., Myatt, L. G., Raju, M., Chang, R. C.-A., et al. (2019) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1816103116 · Cited by 98
Self-citationWu, G., Brown, J., Zamora, M. L., Miller, A., Satterfield, M. C., Meininger, C. J., Steinhauser, C. B., Johnson, G. A., Burghardt, R. C., Bazer, F. W., et al. (2019) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1902925116 · Cited by 76
Self-citation
Cited by
Identifying airborne transmission as the dominant route for the spread of COVID-19
Zhang, R., Li, Y., Zhang, A. L., Wang, Y., & Molina, M. J. (2020) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.2009637117 · Cited by 1,236
Self-citationLiu, T., Chan, A. W. H., & Abbatt, J. P. D. (2021) · Environmental Science & Technology · doi:10.1021/acs.est.0c06496 · Cited by 292
Aerosol–photolysis interaction reduces particulate matter during wintertime haze events
Wu, J., Bei, N., Hu, B., Liu, S., Wang, Y., Shen, Z., Li, X., Liu, L., Wang, R., Liu, Z., et al. (2020) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1916775117 · Cited by 119
Self-citationMa, X., Huang, J., Zhao, T., Liu, C., Zhao, K., Xing, J., & Xiao, W. (2020) · doi:10.5194/acp-2020-385 · Cited by 112
“Decrease in SSA was likely due to the fact that reduction of inorganic aerosols (e.g., sulfate and nitrate) was larger than that of carbonaceous ones (Zhang et al., 2020).”
BackgroundSelf-citation
Metadata
- Authors
- Zhang, F., Wang, Y., Peng, J., Chen, L., Sun, Y., Duan, L., Ge, X., Li, Y., Zhao, J., Liu, C., Zhang, X., Zhang, G., Pan, Y., Wang, Y., Zhang, A. L., Ji, Y., Wang, G., Hu, M., Molina, M. J., & Zhang, R.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2020-02-10
- Volume
- 117
- Issue
- 8
- Pages
- 3960-3966
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W3006368416
- Cited by
- 259
- References
- 3
- FWCI
- 15.10
- Type
- journal article
- Language
- en
- Open access
- hybrid
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: An unexpected catalyst dominates formation and radiative forcing of regional haze. https://app.cochat.ai/papers/10.1073/pnas.1919343117
- The paper
- Zhang, F., Wang, Y., Peng, J., Chen, L., Sun, Y., Duan, L., Ge, X., Li, Y., Zhao, J., Liu, C., Zhang, X., Zhang, G., Pan, Y., Wang, Y., Zhang, A. L., Ji, Y., Wang, G., Hu, M., Molina, M. J., & Zhang, R. (2020). An unexpected catalyst dominates formation and radiative forcing of regional haze. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1919343117
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.