The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Recent Changes in Atmospheric Carbon Monoxide
Abstract
Measurements of carbon monoxide (CO) in air samples collected from 27 locations between 71°N and 41°S show that atmospheric levels of this gas have decreased worldwide over the past 2 to 5 years. During this period, CO decreased at nearly a constant rate in the high northern latitudes. In contrast, in the tropics an abrupt decrease occurred beginning at the end of 1991. In the Northern Hemisphere, CO decreased at a spatially and temporally averaged rate of 7.3 (±0.9) parts per billion per year (6.1 percent per year) from June 1990 to June 1993, whereas in the Southern Hemisphere, CO decreased 4.2 (±0.5) parts per billion per year (7.0 percent per year). This recent change is opposite a long-term trend of a 1 to 2 percent per year increase inferred from measurements made in the Northern Hemisphere during the past 30 years.
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
Decrease of summer tropospheric ozone concentrations in Antarctica
Schnell, R. C., Liu, S. C., Oltmans, S. J., Stone, R. S., Hofmann, D. J., Dutton, E. G., Deshler, T., Sturges, W. T., Harder, J. W., Sewell, S. D., et al. (1991) · Nature · doi:10.1038/351726a0 · Cited by 87
Cited by
Changing concentration, lifetime and climate forcing of atmospheric methane
LELIEVELD, J., CRUTZEN, P. J., & DENTENER, F. J. (1998) · Tellus B · doi:10.1034/j.1600-0889.1998.t01-1-00002.x · Cited by 733
Atmospheric Trends and Lifetime of CH3CCI3and Global OH Concentrations
Prinn, R. G., Weiss, R. F., Miller, B. R., Huang, J., Alyea, F. N., Cunnold, D. M., Fraser, P. J., Hartley, D. E., & Simmonds, P. G. (1995) · Science · doi:10.1126/science.269.5221.187 · Cited by 721
Effect of ozone depletion on atmospheric CH4 and CO concentrations
Bekki, S., Law, K. S., & Pyle, J. A. (1994) · Nature · doi:10.1038/371595a0 · Cited by 135
Monks, S. A., Arnold, S. R., Emmons, L. K., Law, K. S., Turquety, S., Duncan, B. N., Flemming, J., Huijnen, V., Tilmes, S., Langner, J., et al. (2015) · Atmospheric Chemistry and Physics · doi:10.5194/acp-15-3575-2015 · Cited by 106
McMillan, W. W., Warner, J. X., Comer, M. M., Maddy, E., Chu, A., Sparling, L., Eloranta, E., Hoff, R., Sachse, G., Barnet, C., et al. (2008) · Journal of Geophysical Research: Atmospheres · doi:10.1029/2007jd009711 · Cited by 50
Metadata
- Authors
- Novelli, P. C., Masarie, K. A., Tans, P. P., & Lang, P. M.
- Venue
- Science
- Published
- 1994-03-18
- Volume
- 263
- Issue
- 5153
- Pages
- 1587-1590
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2001205507
- Cited by
- 196
- References
- 1
- FWCI
- 17.01
- Type
- journal article
- Language
- en
- Open access
- closed
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: Recent Changes in Atmospheric Carbon Monoxide. https://app.cochat.ai/papers/10.1126/science.263.5153.1587
- The paper
- Novelli, P. C., Masarie, K. A., Tans, P. P., & Lang, P. M. (1994). Recent Changes in Atmospheric Carbon Monoxide. Science. https://doi.org/10.1126/science.263.5153.1587
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.