A quick look at the 2012 record flood in the Amazon Basin.
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Abstract The water level at the Manaus Port on the Negro River reached its record value of 29.97 m on 29 May 2012. This is higher than the previous record in the year 2009 by 20 cm. The rise of the level from November 2011 till the record maximum is the highest in the past several decades. A cooler South Atlantic and a normal or slightly warmer North Atlantic were associated with a record flood in the Amazon Basin in 2012. The seasonal atmospheric moisture convergence and the precipitation over the Amazon Basin are well correlated. During the period October 2011 through May 2012 the moisture‐flux convergence was 38% more intense than climatology. The rainfall equivalence of this excess moisture convergence is about 2.5 mm d–1 in the western Amazon Basin and 1.8 mm d–1 in the whole Amazon Basin.
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Since the 1970s there has been an upward trend in the year-to-year variability of Amazon River discharge, following a period with no trend during 1904 through the 1960s.
“Since the 1970s there has been an upward trend in the year-to-year variability of Amazon River discharge, following a period with no trend during 1904 through the 1960’s (Satyamurty et al., 2013;Barichivich et al., 2018).”
From The tropical atlantic observing system (2019) · cites this paper as Satyamurty et al., 2013
Section 3.2, paragraphs 13–14, reports that the annual range of Negro River water levels at Manaus increased after 1970, with no significant long-range trend from 1904 to the late 1960s. That supports the stated timing, but the measured trend is in the range between high and low water levels, not year-to-year variability of Amazon River discharge. (LLM, conf=0.87)
Experimental — accuracy not yet measuredThe Amazon floods of 2009 and 2012 were the largest going back several decades and left hundreds of thousands homeless.
“At the other extreme, the Amazon floods of 2009 and 2012 were the largest going back several decades (Satyamurty et al., 2013;Filizola et al., 2014) and left hundreds of thousands homeless.”
From The tropical atlantic observing system (2019) · cites this paper as Satyamurty et al., 2013
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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 · see citing works
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Research works printed but not linked: 5
- Marengo, J. A. (2004), Interdecadal variability and trends of rainfall across the Amazon Basin, Theor. Appl. Climatol., 78, 79-96. doi:10.1007/ s00704-004-0045-8. · DOI
- Marengo, J. A., J. Tomasella, W. R. Soares, L. M. Alves, and C. A. Nobre (2011), Extreme climatic events in the Amazon basin: Climatological and hydrological context of recent floods, Theor. Appl. Climatol., 107(1-2), 73-85, doi:10.1007/s00704-011-0465-1. · DOI
- Satyamurty, P., C. P. Wanzeler da Costa, and A. O. Manzi (2012), Moisture source for the Amazon Basin: A study of contrasting years, Theor. Appl. Climatol., doi:10.1007/s00704-12-0637-7. · DOI
- Yoon, J.-H., and N. Zeng (2009), An Atlantic influence on Amazon rainfall, Clim. Dyn., doi:10.1007/s00382-009-0551-6. · DOI
- Zeng, N., J.-H. Yoon, J. A. Marengo, A. Subramaniam, C. A. Nobre, A. Mariotti, and J. D. Neelin (2008), Causes and impacts of the 2005 Amazon drought, Environ. Res. Letters, doi:10.1088/1748-9326/3/1/014002. · DOI · Paper page
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The tropical atlantic observing system
Foltz, G. R., Brandt, P., Richter, I., Rodríguez-Fonseca, B., Hernandez, F., Dengler, M., Rodrigues, R. R., Schmidt, J. O., Yu, L., Lefevre, N., et al. (2019) · Frontiers in Marine Science · doi:10.3389/fmars.2019.00206 · Cited by 150 · see citing works
- Authors
- Satyamurty, P., da Costa, C. P. W., Manzi, A. O., & Candido, L. A.
- Affiliations
- Universidade do Estado do Amazonas (BR)
- Programa de Pós‐Graduação em Clima e Ambiente Universidade do Estado do Amazonas Manaus Brazil
- Instituto Nacional de Pesquisas da Amazônia (BR)
- Instituto Nacional de Pesquisa Amazônicas Manaus Brazil
- Corresponding author
- Satyamurty, Prakki
- Venue
- Geophysical Research Letters
- Publisher
- American Geophysical Union (AGU)
- Published
- 2013-04-11
- Volume
- 40
- Issue
- 7
- Pages
- 1396-1401
- ISSN
- 0094-8276 (ISSN-L)
- 1944-8007
- OpenAlex
- W2136460453
- Cited by
- 90
- References
- 1
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 5 · 2023: 7 · 2022: 9 · 2021: 8 · 2020: 10 · 2019: 8 · 2018: 5 · 2017: 10 · 2016: 7 · 2015: 8 · 2014: 8 · 2013: 1 · 2012: 1
- FWCI
- 6.09
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Geophysical Research Letters (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
- Physical Sciences › Environmental Science › Global and Planetary Change › Flood Risk Assessment and Management
- Physical Sciences › Environmental Science › Water Science and Technology › Hydrology and Watershed Management Studies
- Keywords
- Rio Negro, moisture convergence, air humidity, North Atlantic sea surface temperature, Amazon rainfall, flood climatology
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