The DOI matches its Crossref record; 48 of the 48 references it cites were found in a registry or an index.
Two Contrasting Severe Seasonal Extremes in Tropical South America in 2012: Flood in Amazonia and Drought in Northeast Brazil
Open accessAbstract
Two simultaneous extreme events affected tropical South America to the east of the Andes during the austral summer and fall of 2012: a severe drought in Northeast Brazil and intense rainfall and floods in Amazonia, both considered records for the last 50 years. Changes in atmospheric circulation and rainfall were consistent with the notion of an active role of colder-than-normal surface waters in the equatorial Pacific, with above-normal upward motion and rainfall in western Amazonia and increased subsidence over Northeast Brazil. Atmospheric circulation and soil moisture anomalies in the region contributed to an intensified transport of Atlantic moisture into the western part of Amazonia then turning southward to the southern Amazonia region, where the Chaco low was intensified. This was favored by the intensification of subtropical high pressure over the region, associated with an anomalously intense and northward-displaced Atlantic high over a relatively colder subtropical South Atlantic Ocean. This pattern observed in 2012 was not found during other wet years in Amazonia such as 1989, 1999, and 2009. This suggests La Niña as the main cause of the abundant rainfall in western Amazonia from October to December, with wet conditions starting earlier and remaining until March 2012, mostly in northwestern Amazonia. The anomalously high river levels during the following May–July were a consequence of this early and abundant rainy season during the previous summer. In Northeast Brazil, dry conditions started to appear in December 2011 in the northern sector and then extended to the entire region by the peak of the rainy season of February–May 2012.
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
The NCEP/NCAR 40-Year Reanalysis Project
Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, S., White, G., Woollen, J., et al. (1996) · Bulletin of the American Meteorological Society · doi:10.1175/1520-0477(1996)077<0437:tnyrp>2.0.co;2 · Cited by 28,360
Global and Regional Scale Precipitation Patterns Associated with the El Niño/Southern Oscillation
Ropelewski, C. F., & Halpert, M. S. (1987) · Monthly Weather Review · doi:10.1175/1520-0493(1987)115<1606:garspp>2.0.co;2 · Cited by 3,674
Regions of Strong Coupling Between Soil Moisture and Precipitation
Koster, R. D., Dirmeyer, P. A., Guo, Z., Bonan, G., Chan, E., Cox, P., Gordon, C. T., Kanae, S., Kowalczyk, E., Lawrence, D., et al. (2004) · Science · doi:10.1126/science.1100217 · Cited by 2,872
Drought Sensitivity of the Amazon Rainforest
Phillips, O. L., Aragão, L. E. O. C., Lewis, S. L., Fisher, J. B., Lloyd, J., López-González, G., Malhi, Y., Monteagudo, A., Peacock, J., Quesada, C. A., et al. (2009) · Science · doi:10.1126/science.1164033 · Cited by 1,847
Lewis, S. L., Brando, P. M., Phillips, O. L., van der Heijden, G. M. F., & Nepstad, D. (2011) · Science · doi:10.1126/science.1200807 · Cited by 1,111
Precipitation Patterns Associated with the High Index Phase of the Southern Oscillation
Ropelewski, C. F., & Halpert, M. S. (1989) · Journal of Climate · doi:10.1175/1520-0442(1989)002<0268:ppawth>2.0.co;2 · Cited by 1,108
On the Functioning of the Southern Oscillation in the South American Sector. Part I: Surface Climate
Aceituno, P. (1988) · Monthly Weather Review · doi:10.1175/1520-0493(1988)116<0505:otfots>2.0.co;2 · Cited by 754
The drought of 2010 in the context of historical droughts in the Amazon region: DROUGHT AMAZON 2010
Marengo, J. A., Tomasella, J., Alves, L. M., Soares, W. R., & Rodriguez, D. A. (2011) · Geophysical Research Letters · doi:10.1029/2011gl047436 · Cited by 740
Self-citationMoura, A. D., & Shukla, J. (1981) · Journal of the Atmospheric Sciences · doi:10.1175/1520-0469(1981)038<2653:otdodi>2.0.co;2 · Cited by 737
The drought of Amazonia in 2005.
Marengo, J. A., Nobre, C. A., Tomasella, J., Oyama, M. D., Sampaio de Oliveira, G., de Oliveira, R., Camargo, H., Alves, L. M., & Brown, I. F. (2008) · Journal of Climate · doi:10.1175/2007jcli1600.1 · Cited by 725
Self-citation
Cited by
Extreme seasonal droughts and floods in Amazonia: causes, trends and impacts
Marengo, J. A., & Espinoza, J. C. (2016) · International Journal of Climatology · doi:10.1002/joc.4420 · Cited by 901
Self-citationFrequency, duration and severity of drought in the Semiarid Northeast Brazil region.
Brito, S. S. B., Cunha, A. P. M. A., Cunningham, C. C., Alvalá, R. C., Marengo, J. A., & Carvalho, M. A. (2018) · International Journal of Climatology · doi:10.1002/joc.5225 · Cited by 302
Self-citationLandscape fragmentation, severe drought, and the new Amazon forest fire regime
Alencar, A. A., Brando, P. M., Asner, G. P., & Putz, F. E. (2015) · Ecological Applications · doi:10.1890/14-1528.1 · Cited by 280
Metadata
- Authors
- Marengo, J. A., Alves, L. M., Soares, W. R., Rodriguez, D. A., Camargo, H., Riveros, M. P., & Pabló, A. D.
- Venue
- Journal of Climate
- Publisher
- American Meteorological Society
- Published
- 2013-11-15
- Volume
- 26
- Issue
- 22
- Pages
- 9137-9154
- ISSN
- 0894-8755 (ISSN-L)
- 1520-0442
- OpenAlex
- W1964588380
- Cited by
- 272
- References
- 48
- FWCI
- 12.59
- Type
- journal article
- Language
- en
- Open access
- bronze
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: Two Contrasting Severe Seasonal Extremes in Tropical South America in 2012: Flood in Amazonia and Drought in Northeast Brazil. https://app.cochat.ai/papers/10.1175/jcli-d-12-00642.1
- The paper
- Marengo, J. A., Alves, L. M., Soares, W. R., Rodriguez, D. A., Camargo, H., Riveros, M. P., & Pabló, A. D. (2013). Two Contrasting Severe Seasonal Extremes in Tropical South America in 2012: Flood in Amazonia and Drought in Northeast Brazil. Journal of Climate. https://doi.org/10.1175/jcli-d-12-00642.1
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.
