The DOI matches its Crossref record; 19 of the 19 references it cites were found in a registry or an index.
Vegetation index trends for the African Sahel 1982–1999
Abstract
Pathfinder AVHRR NDVI data have been analyzed for the African Sahel to study recent trends in vegetation greenness. A strong increase in seasonal NDVI was observed over large areas in the Sahel during the period 1982–1999. The increase is interpreted as a vegetation recovery from the drought periods of the 1980's. Although strong shifts in satellite overpass times have led to shifting solar zenith angles (SZA) over the time period, only minimal influence of SZA's on the Pathfinder NDVI was found in our data. A preliminary analysis of rainfall data indicates increasing rainfall during the period. The observed trends may have important implications to the Sahel including changes to the water cycle, energy exchange and carbon storage.
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
Increased plant growth in the northern high latitudes from 1981 to 1991
Myneni, R. B., Keeling, C. D., Tucker, C. J., Asrar, G., & Nemani, R. R. (1997) · Nature · doi:10.1038/386698a0 · Cited by 3,442
Characteristics of maximum-value composite images from temporal AVHRR data
HOLBEN, B. N. (1986) · International Journal of Remote Sensing · doi:10.1080/01431168608948945 · Cited by 3,002
Recent patterns and mechanisms of carbon exchange by terrestrial ecosystems
Schimel, D. S., House, J. I., Hibbard, K. A., Bousquet, P., Ciais, P., Peylin, P., Braswell, B. H., Apps, M. J., Baker, D., Bondeau, A., et al. (2001) · Nature · doi:10.1038/35102500 · Cited by 1,379
Satellite remote sensing of primary production
TUCKER, C. J., & SELLERS, P. J. (1986) · International Journal of Remote Sensing · doi:10.1080/01431168608948944 · Cited by 1,371
African climate change: 1900-2100
Hulme, M., Doherty, R., Ngara, T., New, M., & Lister, D. (2001) · Climate Research · doi:10.3354/cr017145 · Cited by 1,320
Seasonality extraction by function fitting to time-series of satellite sensor data
Jonsson, P., & Eklundh, L. (2002) · IEEE Transactions on Geoscience and Remote Sensing · doi:10.1109/tgrs.2002.802519 · Cited by 1,272
Self-citationMethodology for the estimation of terrestrial net primary production from remotely sensed data
Ruimy, A., Saugier, B., & Dedieu, G. (1994) · Journal of Geophysical Research: Atmospheres · doi:10.1029/93jd03221 · Cited by 798
Analysis of the dynamics of African vegetation using the normalized difference vegetation index
TOWNSHEND, J. R. G., & JUSTICE, C. O. (1986) · International Journal of Remote Sensing · doi:10.1080/01431168608948946 · Cited by 538
SELLERS, P. J., TUCKER, C. J., COLLATZ, G. J., LOS, S. O., JUSTICE, C. O., DAZLICH, D. A., & RANDALL, D. A. (1994) · International Journal of Remote Sensing · doi:10.1080/01431169408954343 · Cited by 499
JAMES, M. E., & KALLURI, S. N. V. (1994) · International Journal of Remote Sensing · doi:10.1080/01431169408954335 · Cited by 478
Cited by
Analysis of Sahelian vegetation dynamics using NOAA-AVHRR NDVI data from 1981–2003
Anyamba, A., & Tucker, C. J. (2005) · Journal of Arid Environments · doi:10.1016/j.jaridenv.2005.03.007 · Cited by 759
A review of environmental droughts: Increased risk under global warming?
Vicente-Serrano, S. M., Quiring, S. M., Peña-Gallardo, M., Yuan, S., & Domínguez-Castro, F. (2020) · Earth-Science Reviews · doi:10.1016/j.earscirev.2019.102953 · Cited by 733
Analysis of monotonic greening and browning trends from global NDVI time-series
de Jong, R., de Bruin, S., de Wit, A., Schaepman, M. E., & Dent, D. L. (2011) · Remote Sensing of Environment · doi:10.1016/j.rse.2010.10.011 · Cited by 675
A recent greening of the Sahel—trends, patterns and potential causes
Olsson, L., Eklundh, L., & Ardö, J. (2005) · Journal of Arid Environments · doi:10.1016/j.jaridenv.2005.03.008 · Cited by 555
Self-citationFensholt, R., Rasmussen, K., Nielsen, T. T., & Mbow, C. (2009) · Remote Sensing of Environment · doi:10.1016/j.rse.2009.04.004 · Cited by 537
Metadata
- Authors
- Eklundh, L., & Olsson, L.
- Venue
- Geophysical Research Letters
- Publisher
- American Geophysical Union (AGU)
- Published
- 2003-04
- Volume
- 30
- Issue
- 8
- ISSN
- 0094-8276 (ISSN-L)
- 1944-8007
- OpenAlex
- W2090600964
- Cited by
- 317
- References
- 19
- FWCI
- 10.75
- 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: Vegetation index trends for the African Sahel 1982–1999. https://app.cochat.ai/papers/10.1029/2002gl016772
- The paper
- Eklundh, L., & Olsson, L. (2003). Vegetation index trends for the African Sahel 1982–1999. Geophysical Research Letters. https://doi.org/10.1029/2002gl016772
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.
