Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 259

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 access
Zhang, Fang, Wang, Yuan, Peng, Jianfei, Chen, Lu, Sun, Yele, Duan, Lian, Ge, Xinlei, Li, Yixin, Zhao, Jiayun, Liu, Chao, Zhang, Xiaochun, Zhang, Gen, Pan, Yuepeng, Wang, Yuesi, Zhang, Annie L., Ji, Yuemeng, Wang, Gehui, Hu, Min, Molina, Mario J., Zhang, Renyi·2020·Proceedings of the National Academy of Sciences

Abstract

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.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1073/pnas.1919343117

Cites

3 of 3 references verified0 citation errors · 0 not checkable

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.

A few free checks a day · papers already verified open instantly · results are public

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

Show all 3 references

Cited by

See all 259

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.