Emerging Economies Climate Report 2022
The report reveals that over half of companies in emerging economies have been impacted by extreme weather events over the last 12 months.The report shows that 58% of companies in Africa and South Asia
Drought
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Impact of a drier EarlyMid-Holocene climate upon Amazonian forests
This paper uses a palaeoecological approach to examine the impact of drier climatic conditions of the Early
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Human dimensions of climate change: the vulnerability of small farmers in the Amazon
This paper argues for a twofold perspective on human adaptation to climate change in the Amazon. First, we need to understand the processes that mediate perceptions of environmental change and the behavioural responses at the levels of the individual and the local population. Second, we should take into account the process of production and dissemination of global and national climate information and models to regional and local populations, especially small farmers.
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Hydro-climatic and ecological behaviour of the drought of Amazonia in 2005
In 2005, southwestern Amazonia experienced the effects of an intense drought that affected life and biodiversity. Several major tributaries as well as parts of the main river itself contained only a fraction of their normal volumes of water, and lakes were drying up. Analyses of climatic and hydrological records in Amazonia suggest a broad consensus that the 2005 drought was linked not to El Nin
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An objective tropical Atlantic sea surface temperature gradient index for studies of south Amazon dry-season climate variability
Future changes in meridional sea surface temperature (SST) gradients in the tropical Atlantic could influence Amazon dry-season precipitation by shifting the patterns of moisture convergence and vertical motion. Unlike for the El Nin
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Amazon Basin climate under global warming:the role of the sea surface temperature
The Hadley Centre coupled climate
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Effects of large-scale Amazon forest degradation on climate and air quality
Loss of large areas of Amazonian forest, through either direct human impact or climate change, could exert a number of influences on the regional and global climates. In the Met Office Hadley Centre coupled climate
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Interactions between rainfall, deforestation and fires during recent years in the Brazilian Amazonia
<p>Understanding the interplay between climate and land-use dynamics is a fundamental concern for assessing the vulnerability of Amazonia to climate change. In this study, we analyse satellite-derived monthly and annual time series of rainfall, fires and deforestation to explicitly quantify the seasonal patterns and relationships between these three variables, with a particular focus on the Amazonian drought of 2005. Our results demonstrate a marked seasonality with one peak per year for all variables analysed, except deforestation.</p> <p><strong><a href="http://rstb.royalsocietypublishing.org/content/363/1498/1779" target="_blank">Original Source</a></strong></p>
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The future of the Amazon: new perspectives from climate, ecosystem and social sciences
The potential loss or large-scale degradation of the tropical rainforests has become one of the iconic images of the impacts of twenty-first century environmental change and may be one of our century's most profound legacies. In the Amazon region, the direct threat of deforestation and degradation is now strongly intertwined with an indirect challenge we are just beginning to understand: the possibility of substantial regional drought driven by global climate change.
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Interactions among Amazon land use, forests and climate: prospects for a near-term forest tipping point
<p>Some model experiments predict a large-scale substitution of Amazon forest by savannah-like vegetation by the end of the twenty-first century. Expanding global demands for biofuels and grains, positive feedbacks in the Amazon forest fire regime and drought may drive a faster process of forest degradation that could lead to a near-term forest dieback. Rising worldwide demands for biofuel and meat are creating powerful new incentives for agro-industrial expansion into Amazon forest regions. Forest fires, drought and logging increase susceptibility to further burning while deforestation and smoke can inhibit rainfall, exacerbating fire risk. If sea surface temperature anomalies (such as El Niño episodes) and associated Amazon droughts of the last decade continue into the future, approximately 55% of the forests of the Amazon will be cleared, logged, damaged by drought or burned over the next 20 years, emitting 15–26 Pg of carbon to the atmosphere. Several important trends could prevent a near-term dieback. As fire-sensitive investments accumulate in the landscape, property holders use less fire and invest more in fire control. Commodity markets are demanding higher environmental performance from farmers and cattle ranchers. Protected areas have been established in the pathway of expanding agricultural frontiers. Finally, emerging carbon market incentives for reductions in deforestation could support these trends.</p> <p><a href="http://rstb.royalsocietypublishing.org/content/363/1498/1737.short" target="_blank">Original Source</a></p>
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USA's drought begins to ease
Heavy rainfall in the Southeast and record snowpack in the Rockies have eased dramatically the nation's worst drought in more than a century. Drought conditions are the least severe since January 2006. A quarter of the USA is suffering some form of drought today, down from 65% last summer, federal agencies said. In the Southeast, where drought has been most severe, the area in drought has plummeted from 86% in August to 40% today.