Past Climate Variability in South America and Surrounding Regions
Past Climate Variability in South America and Surrounding Regions

Author: Francoise Vimeux

Publisher: Springer Science & Business Media

Published: 2009-08-04

Total Pages: 424

ISBN-13: 904812672X

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South America is a unique place where a number of past climate archives are ava- able from tropical to high latitude regions. It thus offers a unique opportunity to explore past climate variability along a latitudinal transect from the Equator to Polar regions and to study climate teleconnections. Most climate records from tropical and subtropical South America for the past 20,000 years have been interpreted as local responses to shift in the mean position and intensity of the InterTropical Conv- gence Zone due to tropical and extratropical forcings or to changes in the South American Summer Monsoon. Further South, the role of the Southern Hemisphere westerly winds on global climate has been highly investigated with both paleodata and coupled climate models. However the regional response over South America during the last 20,000 years is much more variable from place to place than pre- ously thought. The factors that govern the spatial patterns of variability on millennial scale resolution are still to be understood. The question of past natural rates and ranges of climate conditions over South America is therefore of special relevance in this context since today millions of people live under climates where any changes in monsoon rainfall can lead to catastrophic consequences.

Climate Variability and Change in High Elevation Regions: Past, Present & Future
Climate Variability and Change in High Elevation Regions: Past, Present & Future

Author: Henry F. Diaz

Publisher: Springer Science & Business Media

Published: 2003-07-31

Total Pages: 294

ISBN-13: 9781402013867

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Glaciers in the Andes are particularly important natural archives of present and past climatic and environmental changes, in significant part because of the N-S trend of this topographic barrier and its influence on the atmospheric circulation of the southern hemisphere. Strong gradients in the seasonality and amount of precipitation exist between the equator and 30° S. Large differences in amount east and west of the Andean divide also occur, as well as a change from tropical summer precipitation (additionally modified by the seasonal shift of the circulation belts) to winter precipitation in the west wind belt (e. g. , Yuille, 1999; Garraud and Aceituno, 2001). The so-called 'dry axis' lies between the tropical and extra tropical precipitation regimes (Figure 1). The high mountain desert within this axis responds most sensitively to the smallest changes in effective moisture. An important hydro-meteorological feature on a seasonal to inter-annual time-scale is the occurrence of EN SO events, which strongly control the mass balance of glaciers in this area (e. g. , Wagnon et ai. , 2001; Francou et ai. , in press). The precipitation pattern is an important factor for the interpretation of climatic and environmental records extracted from ice cores, because much of this information is related to conditions at the actual time of precipitation, and this is especially so for stable isotope records. Several ice cores have recently been drilled to bedrock in this area. From Huascanin (Thompson et ai. , 1995), Sajama (Thompson et ai.

Indigenous Peoples and Climate Change in Latin America and the Caribbean
Indigenous Peoples and Climate Change in Latin America and the Caribbean

Author: Jakob Kronik

Publisher: World Bank Publications

Published: 2010-06-25

Total Pages: 208

ISBN-13: 0821383817

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This book addresses the social implications of climate change and climatic variability on indigenous peoples and communities living in the highlands, lowlands, and coastal areas of Latin America and the Caribbean. Across the region, indigenous people already perceive and experience negative effects of climate change and variability. Many indigenous communities find it difficult to adapt in a culturally sustainable manner. In fact, indigenous peoples often blame themselves for the changes they observe in nature, despite their limited emission of green house gasses. Not only is the viability of their livelihoods threatened, resulting in food insecurity and poor health, but also their cultural integrity is being challenged, eroding the confidence in solutions provided by traditional institutions and authorities. The book is based on field research among indigenous communities in three major eco-geographical regions: the Amazon; the Andes and Sub-Andes; and the Caribbean and Mesoamerica. It finds major inter-regional differences in the impacts observed between areas prone to rapid- and slow-onset natural hazards. In Mesoamerican and the Caribbean, increasingly severe storms and hurricanes damage infrastructure and property, and even cause loss of land, reducing access to livelihood resources. In the Columbian Amazon, changes in precipitation and seasonality have direct immediate effects on livelihoods and health, as crops often fail and the reproduction of fish stock is threatened by changes in the river ebb and flow. In the Andean region, water scarcity for crops and livestock, erosion of ecosystems and changes in biodiversity threatens food security, both within indigenous villages and among populations who depend on indigenous agriculture, causing widespread migration to already crowded urban areas. The study aims to increase understanding on the complexity of how indigenous communities are impacted by climate change and the options for improving their resilience and adaptability to these phenomena. The goal is to improve indigenous peoples rights and opportunities in climate change adaptation, and guide efforts to design effective and sustainable adaptation initiatives.

Historical Climate Variability and Impacts in North America
Historical Climate Variability and Impacts in North America

Author: Lesley-Ann Dupigny-Giroux

Publisher: Springer Science & Business Media

Published: 2009-09-18

Total Pages: 279

ISBN-13: 9048128285

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Climatologists with an eye on the past have any number of sources for their work, from personal diaries to weather station reports. Piecing together the trajectory of a weather event can thus be a painstaking process taking years and involving real detective work. Missing pieces of a climate puzzle can come from very far afield, often in unlikely places. In this book, a series of case studies examine specific regions across North America, using instrumental and documentary data from the 17th to the 19th centuries. Extreme weather events such as the Sitka hurricane of 1880 are recounted in detail, while the chapters also cover more widespread phenomena such as the collapse of the Low Country rice culture. The book also looks at the role of weather station histories in complementing the instrumental record, and sets out the methods that involve early instrumental and documentary climate data. Finally, the book’s focus on North America reflects the fact that the historical climate community there has only grown relatively recently. Up to now, most such studies have focused on Europe and Asia. The four sections begin with regional case studies, and move on to reconstruct extreme events and parameters. This is followed by the role of station history and, lastly, methodologies and other analyses. The editors’ aim has been to produce a volume that would be instrumental in molding the next generation of historical climatologists. They designed this book for use by general researchers as well as in upper-level undergraduate or graduate level courses.

Climate Variability, Climate Change and Social Vulnerability in the Semi-arid Tropics
Climate Variability, Climate Change and Social Vulnerability in the Semi-arid Tropics

Author: Jesse C. Ribot

Publisher: Cambridge University Press

Published: 1996-06-27

Total Pages: 191

ISBN-13: 0521480744

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Climate fluctuations can trigger events that lead to mass migration, hunger and famine. Rather than attributing the blame to nature, the contributors look at the underlying causes of social vulnerability, such as the processes and organisation of society in the semi-arid tropics. Past and present susceptibility to destitution, hunger, and famine in the face of climate variability can teach us about the potential future consequences of climate change. By understanding why individuals, households, nations, and regions are vulnerable, and how they have buffered themselves against climatic and environmental fluctuations, present and future vulnerability can be redressed. Through case studies from across the globe, the authors explore past experiences with climate variability, and the likely effects of, and the possible policy responses to, the types of climatic events that global warming might bring.

The Regional Impacts of Climate Change
The Regional Impacts of Climate Change

Author: Intergovernmental Panel on Climate Change. Working Group II.

Publisher: Cambridge University Press

Published: 1998

Total Pages: 532

ISBN-13: 9780521634557

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Cambridge, UK : Cambridge University Press, 1998.

A Fragmented Continent
A Fragmented Continent

Author: Guy Edwards

Publisher: MIT Press

Published: 2015-11-27

Total Pages: 299

ISBN-13: 0262330164

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How Latin American countries became leading voices and innovators on addressing climate change—and what threatens their leadership. Latin American countries have increased their influence at the United Nations climate change negotiations and offered potential solutions on coping with global warming. But in the face of competing priorities, sometimes these climate policies are jettisoned, undermined, or simply ignored. A Fragmented Continent focuses on Latin America's three major blocs at the U.N. climate negotiations and how they attempt to balance climate action with building prosperity. Brazil has reduced its deforestation but continues its drive for economic growth and global recognition. A leftist group led by Venezuela, Bolivia, and Ecuador decries the injustice of climate change but is highly dependent on the export of fossil fuels. A new group, including Chile, Costa Rica, and Peru and supported by Mexico, offers sharp reductions in their carbon emissions in return for greater action by others; these countries now have to deliver on their promises. Weaving together issues of politics and economy, trade, foreign policy, civil society, and environmental protection, A Fragmented Continent offers a long-missing perspective on one of this century's greatest challenges and neglected regions.

Climate Variability and the Global Harvest
Climate Variability and the Global Harvest

Author: Cynthia Rosenzweig

Publisher: Oxford University Press

Published: 2008-01-07

Total Pages: 282

ISBN-13: 0198031475

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The Earth's climate is constantly changing. Some of the changes are progressive, while others fluctuate at various time scales. The El Niño-la Niña cycle is one such fluctuation that recurs every few years and has far-reaching impacts. It generally appears at least once per decade, but this may vary with our changing climate. The exact frequency, sequence, duration and intensity of El Niño's manifestations, as well as its effects and geographic distributions, are highly variable. The El Niño-la Niña cycle is particularly challenging to study due to its many interlinked phenomena that occur in various locations around the globe. These worldwide teleconnections are precisely what makes studying El Niño-la Niña so important. Cynthia Rosenzweig and Daniel Hillel describe the current efforts to develop and apply a global-to-regional approach to climate-risk management. They explain how atmospheric and social scientists are cooperating with agricultural practitioners in various regions around the world to determine how farmers may benefit most from new climate predictions. Specifically, the emerging ability to predict the El Niño-Southern Oscillation (ENSO) cycle offers the potential to transform agricultural planning worldwide. Biophysical scientists are only now beginning to recognize the large-scale, globally distributed impacts of ENSO on the probabilities of seasonal precipitation and temperature regimes. Meanwhile, social scientists have been researching how to disseminate forecasts more effectively within rural communities. Consequently, as the quality of climatic predictions have improved, the dissemination and presentation of forecasts have become more effective as well. This book explores the growing understanding of the interconnectedness of climate predictions and productive agriculture for sustainable development, as well as methods and models used to study this relationship.

Reducing Poverty, Protecting Livelihoods, and Building Assets in a Changing Climate
Reducing Poverty, Protecting Livelihoods, and Building Assets in a Changing Climate

Author: Dorte Verner

Publisher: World Bank Publications

Published: 2010-06-25

Total Pages: 460

ISBN-13: 0821383787

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Climate change is the defining development challenge of our time. More than a global environmental issue, climate change and variability threaten to reverse recent progress in poverty reduction and economic growth. Both now and over the long run, climate change and variability threatens human and social development by restricting the fulfillment of human potential and by disempowering people and communities in reducing their livelihoods options. Communities across Latin America and the Caribbean are already experiencing adverse consequences from climate change and variability. Precipitation has increased in the southeastern part of South America, and now often comes in the form of sudden deluges, leading to flooding and soil erosion that endanger people s lives and livelihoods. Southwestern parts of South America and western Central America are seeing a decrease in precipitation and an increase in droughts. Increasing heat and drought in Northeast Brazil threaten the livelihoods of already-marginal smallholders, and may turn parts of the eastern Amazon rainforest into savannah. The Andean inter-tropical glaciers are shrinking and expected to disappear altogether within the next 20-40 years, with significant consequences for water availability. These environmental changes will impact local livelihoods in unprecedented ways. Poverty, inequality, water access, health, and migration are and will be measurably affected by climate change. Using an innovative research methodology, this study finds quantitative evidence of large variations in impacts across regions. Many already poor regions are becoming poorer; traditional livelihoods are being challenged in unprecedented ways; water scarcity is increasing, particularly in poor arid areas; human health is deteriorating; and climate-induced migration is already taking place and may increase. Successfully reducing social vulnerability to climate change and variability requires action and commitment at multiple levels. This volume offers key operational recommendations at the government, community, and household levels with particular emphasis placed on enhancing good governance and technical capacity in the public sector, building social capital in local communities, and protecting the asset base of poor households.