Atmospheric circulation

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  • More and more evidence of global climate warming, sea level rise, droughts, floods and climate extremes are recorded. In Vietnam, the manifestation of climate change (CC) is often considered as changing the level and trend of variation of main climatic elements and sea level. However, Vietnam climate influenced by the characteristics of atmospheric circulation in the Earth climate system.

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  • Climate dynamicists generally characterize the Hadley circulation in terms of some derived meteorological parameters, such as the mass stream function (the nondivergent part of the flow) or the velocity potential (the divergent circulation), both of which are based on measurements of the three-dimensional wind field. Yet, we know very little about how such indices have varied in the past—beyond the most recent decades.

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  • Cyclones are a key element of the atmospheric circulation in the midlatitudes (Carlson, 1998). Cyclogenesis, for which a first conceptual model was presented by the Bergen school (Bjerknes, 1910), occurs most frequently at the polar front. The various ascending and descending airstreams typically associated with these cyclones carry a range of different chemical signatures (Cooper et al., 2002). The so-called warm conveyor belt (WCB) – a strongly ascending airstream ahead of a cyclone’s cold front (Browning et al.

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  • This book gives an account of the modern view of the global circulation of the atmosphere. It brings the observed nature of the circulation together with theories and simple models of the mechanisms which drive it. Early chapters concentrate on the classical view of the global circulation, on the processes which generate atmospheric motions and on the dynamical constraints which modify them. Later chapters develop more recent themes including low frequency variability and the circulation of other planetary atmospheres....

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  • The litho-hydrodynamic and environmental conditions in the Vietnamese coastal estuarine basin are significantly affected by the land-ocean-atmosphere interaction processes whish tide has a determining role. Application of the coupled 1D, 2D and 3D modeling system could resolve this complicated problem but it requires other solutions related with the boundary and coupling conditions.

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  • Over the past few decades numerous studies have shown an alarming increase in the concentration of atmospheric particular matter called aerosols resulting from a variety of human activities, ranging from agricultural to combustion of fossil fuels. Besides having serious impacts on the health of all living creatures, these particles can affect planetary radiation budget. Consequences of this change include global temperature shifts and the altering of atmospheric and oceanic circulation patterns.

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  • ‘Climate models’ is a very broad topic, so a single volume can only offer a small sampling of relevant research activities. This volume of 14 chapters includes descriptions of a variety of modeling studies for a variety of geographic regions by an international roster of authors. The climate research community generally uses the rubric ‘climate models’ to refer to organized sets of computer instructions that produce simulations of climate evolution.

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  • This is the first of two reports that address the complex issue of incorporating the needs of climate research into the National Polar-orbiting Operational Environmental Satellite System (NPOESS). NPOESS, which has been driven by the imperative of reliably providing short-term weather information, is itself a union of heretofore separate civilian and military programs. It is a marriage of convenience to eliminate needless duplication and reduce cost, one that appears to be working.

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  • Ở Việt Nam, biểu hiện của biến đổi khí hậu (CC) thường được coi như thay đổi mức độ và xu hướng biến đổi của các yếu tố chính của khí hậu và mực nước biển. Tuy nhiên, khí hậu Việt Nam chịu ảnh hưởng của các đặc điểm của lưu thông không khí trong hệ thống khí hậu trái đất.

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  • As a natural consequence of the issue of all this paper the coin was rapidly leaving the kingdom; this circumstance alarmed the managers of the bank; and as the circulation of banknotes had now become immense, the effects of a run were regarded with great apprehension.

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  • Any study forecasting conditions four decades hence will be faced with large uncertainties and these need to be borne in mind in interpreting the results of this study. One uncertainty concerns the pathway of GHG emissions. To address that issue, the city case studies examined both a high and a low GHG emissions scenario to bracket the likely future conditions. In the climate change downscaling methodologies, there are uncertain- ties in forecasting the increase in extreme and seasonal precipitation under the different sce- narios.

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