Large-scale natural catastrophes are environmental phenomena. Numerous studies in recent years have concluded that the frequency of occurrence of such natural disasters have been incereasing. leading to an enhanced risk of very considerable human and economic losses and the widespread destruction and pollution of habitats, settlements and infrastructure. In 2001 over 650 natural disasters happened around the globe with economic losses exceeding $35 billion. 2004 ended with the South East Asian tsunami on 26th December with its huge toll on life and local economics and this demonstrated that the efffects of such disasters are most keenly felt in poorer or developing regions.

The problem of natural disaster prediction and the implementation of environmental monitoring systems to receive, store and process the information necessary for solutions of specific problems in this area, have been analysed by the three authors of this book, all of whom are internationally respected experts in this field.

This book provides the first comprehensive analysis of how aerosols form in the atmosphere through in situ processes as well as via transport from the surface (dust storms, seas spray, biogenic emissions, forest fires etc.). Such an analysis has been followed by the consideration of both observation data (various field observational experiments) and numerical modeling results to assess climate impacts of aerosols bearing in mind that these impacts are the most significant uncertainty in studying natural and anthropogenic causes of climate change.

Large-scale natural catastrophes are environmental phenomena. Numerous studies in recent years have concluded that the frequency of occurrence of such natural disasters have been incereasing. leading to an enhanced risk of very considerable human and economic losses and the widespread destruction and pollution of habitats, settlements and infrastructure. In 2001 over 650 natural disasters happened around the globe with economic losses exceeding $35 billion. 2004 ended with the South East Asian tsunami on 26th December with its huge toll on life and local economics and this demonstrated that the efffects of such disasters are most keenly felt in poorer or developing regions.

The problem of natural disaster prediction and the implementation of environmental monitoring systems to receive, store and process the information necessary for solutions of specific problems in this area, have been analysed by the three authors of this book, all of whom are internationally respected experts in this field.

This book provides the first comprehensive analysis of how aerosols form in the atmosphere through in situ processes as well as via transport from the surface (dust storms, seas spray, biogenic emissions, forest fires etc.). Such an analysis has been followed by the consideration of both observation data (various field observational experiments) and numerical modeling results to assess climate impacts of aerosols bearing in mind that these impacts are the most significant uncertainty in studying natural and anthropogenic causes of climate change.

The main focus of this book is the study of environmental dynamics in the Arctic, coupled with ecosystem dynamics. Particular emphasis is placed on problems of the composition of the Arctic atmosphere, including minor gases, aerosols and clouds, as well as changes in the composition due to impacts of human activity. Analysis of observational data and numerical modelling results, which characterize the Arctic basin pollution dynamics, and its impact on ecosystems is also provided. Other topics covered include problems of general circulation in the atmosphere and oceans - beginning with the 1930s when the Arctic was regarded as the kitchen of global weather and climate and concluding with the situation today when modern observational data and numerical modelling make for a more balanced view.