Influence Of The Sea Surface Temperature Decadal Variability On Tropical Precipitation West African And South American Monsoon
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| Author | : Julián Villamayor |
| Publisher | : Springer |
| Total Pages | : 227 |
| Release | : 2019-07-05 |
| Genre | : Science |
| ISBN | : 3030203271 |
In this book the Sea Surface Temperature (SST) patterns of decadal-to-multidecadal variability observed and simulated by 17 general circulation models (GCMs) are analyzed. Furthermore, their impact on precipitation in West Africa and South America and the atmospheric mechanisms involved are assessed. Through this analysis, the effect of external forcings on these impacts and the relative contribution of decadal-to-multidecadal variability patterns of SST to precipitation are presented in depth. Finally, a humid period in the West African region of the Sahel during the 19th century, previously little documented, is analyzed using an atmospheric GCM. The monsoons of West Africa and South America have shown changes in the timescales of a few decades. Previous work suggests a relationship with patterns of decadal-to-multidecadal variability of SST, such as global warming and the Atlantic and Pacific variability. However, the dynamics underlying this relationship and its simulation by current GCMs had not been addressed in a consistent manner. This is the main motivation of this book. The results of this book not only represent a great step forward in our understanding of the changes in the precipitation regimes of the studied regions, but they can also be of great help for the improvement of decadal prediction systems and the associated social consequences.
| Author | : Julián Villamayor Moreno |
| Publisher | : |
| Total Pages | : 263 |
| Release | : 2018 |
| Genre | : |
| ISBN | : |
The Sahel is the semiaridWest African region between the Sahara desert andthe wet tropical savanna. The Sahel rainfall depends on the West AfricanMonsoon (WAM) system and peaks between July and September. The rainfallregimes of the Amazonia and Northeast regions, located in northernBrazil, depend on the South American Monsoon system. The Amazonia isthe region covered by the Amazon River basin, where heavy rains occurthroughout the year but with a rainier season extending from December toMay. The Northeast is a semiarid region with a short rainy season betweenMarch and May.Precipitation regimes in these three regions have undergone changes overtime with important humanitarian, environmental and economic consequencesand have been a major topic of study (e.g. Rodríguez-Fonseca et al., 2015;Zhou and Lau, 2001; Marengo et al., 2016). At decadal-to-multidecadal timescales, these changes have been mainly associated with the global sea surfacetemperature (SST) variability. Particularly, the Sahel precipitation hasbeen associated with the global warming (GW), the Atlantic MultidecadalVariability (AMV) and the Interdecadal Pacific Oscillation (IPO) modes ofdecadal-to-multidecadal SST variability (e.g. Mohino et al., 2011a). The Amazoniaand Northeast rainfall changes have been related to the Pacific and theAtlantic SST variability at decadal time scales (e.g. Grimm and Saboia, 2015),which is led by the AMV and IPO...
| Author | : Roberto Suárez Moreno |
| Publisher | : Springer |
| Total Pages | : 185 |
| Release | : 2018-11-27 |
| Genre | : Science |
| ISBN | : 3319994506 |
In tropical latitudes, monsoons trigger regimes of strong seasonal rainfall over the continents. Over the West African region, the rainfall has shown a strong variability from interannual to decadal time scales. The atmospheric response to global sea surface temperatures is the leading cause of rainfall variability in the West African Sahel. This thesis explores changes in the leading ocean forcing of Sahelian rainfall interannual variability. It anaylzes the dynamical mechanisms at work to explain the non-stationary sea surface temperature-forced response of anomalous rainfall. The underlying multidecadal sea surface temperature background is raised as a key factor that favors some interannual teleconnections and inhibits others. Results of this thesis are relevant for improving the seasonal predictability of summer rainfall in the Sahel.
| Author | : Carlos R. Mechoso |
| Publisher | : Cambridge University Press |
| Total Pages | : 359 |
| Release | : 2020-11-26 |
| Genre | : Science |
| ISBN | : 1108492703 |
A comprehensive review of interactions between the climates of different ocean basins and their key contributions to global climate variability and change. Providing essential theory and discussing outstanding examples as well as impacts on monsoons, it a useful resource for graduate students and researchers in the atmospheric and ocean sciences.
| Author | : Intergouvernemental panel on climate change. Working group 1 |
| Publisher | : Cambridge University Press |
| Total Pages | : 1553 |
| Release | : 2014 |
| Genre | : Climatic changes |
| ISBN | : 110705799X |
The report also provides a comprehensive assessment of past and future sea level change in a dedicated chapter.
| Author | : Samson Hagos |
| Publisher | : |
| Total Pages | : 228 |
| Release | : 2008 |
| Genre | : |
| ISBN | : |
| Author | : Intergovernmental Panel on Climate Change (IPCC) |
| Publisher | : Cambridge University Press |
| Total Pages | : 2410 |
| Release | : 2023-07-26 |
| Genre | : Science |
| ISBN | : 1009175351 |
The Working Group I contribution to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) provides a comprehensive assessment of the physical science basis of climate change. It considers in situ and remote observations; paleoclimate information; understanding of climate drivers and physical, chemical, and biological processes and feedbacks; global and regional climate modelling; advances in methods of analyses; and insights from climate services. It assesses the current state of the climate; human influence on climate in all regions; future climate change including sea level rise; global warming effects including extremes; climate information for risk assessment and regional adaptation; limiting climate change by reaching net zero carbon dioxide emissions and reducing other greenhouse gas emissions; and benefits for air quality. The report serves policymakers, decision makers, stakeholders, and all interested parties with the latest policy-relevant information on climate change. Available as Open Access on Cambridge Core.
| Author | : Anita Drumond |
| Publisher | : Frontiers Media SA |
| Total Pages | : 140 |
| Release | : 2016-05-20 |
| Genre | : Environmental sciences |
| ISBN | : 2889198243 |
The Atlantic Ocean is the second-largest of the world's oceanic divisions. It is bounded by the continents of America, Europe and Africa and at its pole wards margins by the Arctic and the Southern Oceans. Different climatic patterns can be observed along its large latitudinal domain, which extends from the equator to sub-polar regions. Thus, different tropical and extra-tropical meteorological systems may have some influence on the characterization of precipitation regimes observed surrounding the basin, such as the Intertropical Convergence Zone (ITCZ), tropical monsoon systems, westerly storm tracks and atmospheric rivers. The subtropical regions of the Azores and South Atlantic high pressure systems are large evaporative areas which act as important moisture sources for the adjacent continents. Variations in the oceanic characteristics may influence the moisture transport towards the neighboring landmasses and alter the precipitation. The influence of climatic variability modes manifest not only over the Atlantic Ocean, but also over other oceanic regions, may also interact with the regional hydrological budget, thereby generating long periods of drought or excessive precipitation over the Atlantic rim landmasses. This Research Topic intends to highlight the advances of the scientific community in investigating the continental precipitation surrounding the Atlantic Ocean and its variability on various temporal and spatial scales.
| Author | : |
| Publisher | : Academic Press |
| Total Pages | : 893 |
| Release | : 2013-10-22 |
| Genre | : Science |
| ISBN | : 0123918537 |
The book represents all the knowledge we currently have on ocean circulation. It presents an up-to-date summary of the state of the science relating to the role of the oceans in the physical climate system. The book is structured to guide the reader through the wide range of world ocean circulation experiment (WOCE) science in a consistent way. Cross-references between contributors have been added, and the book has a comprehensive index and unified reference list. The book is simple to read, at the undergraduate level. It was written by the best scientists in the world who have collaborated to carry out years of experiments to better understand ocean circulation. Presents in situ and remote observations with worldwide coverage Provides theoretical understanding of processes within the ocean and at its boundaries to other Earth System components Allows for simulating ocean and climate processes in the past, present and future using a hierarchy of physical-biogeochemical models
| Author | : Leila Maria Véspoli de Carvalho |
| Publisher | : Springer |
| Total Pages | : 262 |
| Release | : 2015-12-22 |
| Genre | : Science |
| ISBN | : 3319216503 |
This book presents a global overview examining monsoon variability in South Asia, Australian, South America and North American, as well as a focus on glaciers and monsoon systems. Monsoon systems are important components of the Earth's climate and play fundamental roles in water and energy balances. The variability and changes in the monsoons affect millions of people and the economies of many countries. This book presents the physical mechanisms involved with monsoon systems, including recent modeling advances addressing climate changes and future projections. The Monsoons and Climate Change will be of interest to both graduate students and researchers.
