The DOI matches its Crossref record.
Drier summers cancel out the CO 2 uptake enhancement induced by warmer springs
Open accessAbstract
An increase in photosynthetic activity of the northern hemisphere terrestrial vegetation, as derived from satellite observations, has been reported in previous studies. The amplitude of the seasonal cycle of the annually detrended atmospheric CO 2 in the northern hemisphere (an indicator of biospheric activity) also increased during that period. We found, by analyzing the annually detrended CO 2 record by season, that early summer (June) CO 2 concentrations indeed decreased from 1985 to 1991, and they have continued to decrease from 1994 up to 2002. This decrease indicates accelerating springtime net CO 2 uptake. However, the CO 2 minimum concentration in late summer (an indicator of net growing-season uptake) showed no positive trend since 1994, indicating that lower net CO 2 uptake during summer cancelled out the enhanced uptake during spring. Using a recent satellite normalized difference vegetation index data set and climate data, we show that this lower summer uptake is probably the result of hotter and drier summers in both mid and high latitudes, demonstrating that a warming climate does not necessarily lead to higher CO 2 growing-season uptake, even in high-latitude ecosystems that are considered to be temperature limited.
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
Cited by
Canadell, J. G., Le Quéré, C., Raupach, M. R., Field, C. B., Buitenhuis, E. T., Ciais, P., Conway, T. J., Gillett, N. P., Houghton, R. A., & Marland, G. (2007) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0702737104 · Cited by 2,136
WU, Z., DIJKSTRA, P., KOCH, G. W., PEÑUELAS, J., & HUNGATE, B. A. (2011) · Global Change Biology · doi:10.1111/j.1365-2486.2010.02302.x · Cited by 1,379
Net carbon dioxide losses of northern ecosystems in response to autumn warming
Piao, S., Ciais, P., Friedlingstein, P., Peylin, P., Reichstein, M., Luyssaert, S., Margolis, H., Fang, J., Barr, A., Chen, A., et al. (2008) · Nature · doi:10.1038/nature06444 · Cited by 1,157
Feedbacks of Terrestrial Ecosystems to Climate Change
Field, C. B., Lobell, D. B., Peters, H. A., & Chiariello, N. R. (2007) · Annual Review of Environment and Resources · doi:10.1146/annurev.energy.32.053006.141119 · Cited by 317
STINSON, G., KURZ, W. A., SMYTH, C. E., NEILSON, E. T., DYMOND, C. C., METSARANTA, J. M., BOISVENUE, C., RAMPLEY, G. J., LI, Q., WHITE, T. M., et al. (2011) · Global Change Biology · doi:10.1111/j.1365-2486.2010.02369.x · Cited by 299
Metadata
- Authors
- Angert, A., Biraud, S., Bonfils, C., Henning, C. C., Buermann, W., Pinzon, J., Tucker, C. J., & Fung, I.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2005-07-25
- Volume
- 102
- Issue
- 31
- Pages
- 10823-10827
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2114848721
- Cited by
- 486
- References
- 0
- FWCI
- 22.88
- Type
- journal article
- Language
- en
- Open access
- green
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: Drier summers cancel out the CO 2 uptake enhancement induced by warmer springs. https://app.cochat.ai/papers/10.1073/pnas.0501647102
- The paper
- Angert, A., Biraud, S., Bonfils, C., Henning, C. C., Buermann, W., Pinzon, J., Tucker, C. J., & Fung, I. (2005). Drier summers cancel out the CO 2 uptake enhancement induced by warmer springs. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0501647102
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.
