Introduction
摘要
introduces and motivates the main topics of this book. It draws attention to our changing atmosphere and gives a brief history of atmospheric research. The desire to understand physical and chemical processes in the atmosphere motivates the need for accurate measurements of trace gas concentrationsConcentration and other relevant parameters. Differential Optical Absorption SpectroscopyAbsorptionspectroscopy plays an important role in providing such measurements and is briefly introduced. Chapter 1 also provides an outline of this book and a chapter overview.