Cited by 725Hydrology and Drought AnalysisClimate variability and modelsMeteorological Phenomena and Simulations

The drought of Amazonia in 2005.

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Marengo, José A., Nobre, Carlos A., Tomasella, Javier, Oyama, Marcos D., Sampaio de Oliveira, Gilvan, de Oliveira, Rafael, Camargo, Helio, Alves, Lincoln M. +1 more·2008·Journal of Climate

Abstract

In 2005, large sections of southwestern Amazonia experienced one of the most intense droughts of the last hundred years. The drought severely affected human population along the main channel of the Amazon River and its western and southwestern tributaries, the Solimões (also known as the Amazon River in the other Amazon countries) and the Madeira Rivers, respectively. The river levels fell to historic low levels and navigation along these rivers had to be suspended. The drought did not affect central or eastern Amazonia, a pattern different from the El Niño–related droughts in 1926, 1983, and 1998. The choice of rainfall data used influenced the detection of the drought. While most datasets (station or gridded data) showed negative departures from mean rainfall, one dataset exhibited above-normal rainfall in western Amazonia. The causes of the drought were not related to El Niño but to (i) the anomalously warm tropical North Atlantic, (ii) the reduced intensity in northeast trade wind moisture transport into southern Amazonia during the peak summertime season, and (iii) the weakened upward motion over this section of Amazonia, resulting in reduced convective development and rainfall. The drought conditions were intensified during the dry season into September 2005 when humidity was lower than normal and air temperatures were 3°–5°C warmer than normal. Because of the extended dry season in the region, forest fires affected part of southwestern Amazonia. Rains returned in October 2005 and generated flooding after February 2006.

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Crossref · 10.1175/2007jcli1600.1

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  • The two record droughts of 2005 and 2010 were regarded as once-in-a-century climate extremes at the times of their occurrences and were linked to anomalous SSTs in the tropical Atlantic.

    “The two record droughts of 2005 and 2010 were regarded as “once in a century” climate extremes at the times of their occurrences and were linked to anomalous SSTs in the tropical Atlantic (Figure 1; Marengo et al., 2008;Zeng et al., 2008;Lewis et al., 2011).”

    From The tropical atlantic observing system (2019) · cites this paper as Marengo et al., 2008

    The Discussion and conclusions (section 6; page unavailable) describe the 2005 drought in southwestern Amazonia as possibly among the most severe in at least 100 years. The Introduction (section 1) links that drought to anomalously warm tropical North Atlantic SSTs. This 2008 paper does not address the 2010 drought, so it cannot support the claim about both events. (LLM, conf=0.90)

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1 of the 33 references couldn’t be matched to a known paper.

Research works printed but not linked: 2

  1. --, and C. A. Nobre, 2001: The hydroclimatological framework in Amazonia. Biogeochemistry of Amazonia, J. E. Richey, M. E. McClain, and R. L. Victoria, Eds., Oxford University Press, 17-42.
  2. Rudolf, B., and U. Schneider, 2005: Calculation of gridded precipitation data for the global land-surface using in-situ gauge observations. Proc. Second Workshop of the Interna- tional Precipitation Working Group IPWG, Monterey, CA, EUMETSAT, 231-247.

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Authors
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.
Affiliations
  • Instituto Nacional de Pesquisas Espaciais (BR)
  • Instituto de Aeronáutica e Espaço (BR)
  • CPTEC/INPE, Cachoeira Paulista, São Paulo, Brazil
  • Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, and Zoobotanical Park, Federal University of Acre, Acre, Rio Branco, Brazil
Venue
Journal of Climate
Published
2008-02-01
Volume
21
Issue
3
Pages
495-516
ISSN
  • 0894-8755 (ISSN-L)
  • 1520-0442
OpenAlex
W2084767784
Cited by
725
References
33
Citations by year
2026: 26 · 2025: 25 · 2024: 30 · 2023: 45 · 2022: 36 · 2021: 47 · 2020: 32 · 2019: 27 · 2018: 38 · 2017: 53 · 2016: 47 · 2015: 36 · 2014: 49 · 2013: 52 · 2012: 46
FWCI
39.91
Type
journal article
Language
en
Open access
Locations
  • Journal of Climate (publishedVersion)
  • Biblioteca Digital da Memória Científica do INPE (National Institute for Space Research) (submittedVersion)
Funders
  • Northwestern University
  • University of Oxford
  • Commonwealth Scientific and Industrial Research Organisation
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (01/13816-1)
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Hydrology and Drought Analysis
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Meteorological Phenomena and Simulations
Keywords
southwestern Amazon, Amazon River, Madeira River, Solimões River, El Niño, North Atlantic warming, convective precipitation, forest fires, floods

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