Solar and Terrestrial Radiation: Methods and Measurements basically summarizes instruments used in routine measurements of solar and terrestrial radiation at the earth’s surface. Because of developments in this field, these certain instruments are sufficiently relevant for meteorological and climatological purposes. Although the emphasis of the book is on the radiation instrumentation, basic theory is still covered and discussed for the purpose of understanding basic radiative processes in the atmosphere. The featured instruments in this book show that if used properly, these instruments can eliminate certain deficiencies in climatological data and routine monitoring of the radiative regime of the surface and lower atmosphere. However, the scope of the study is limited in which they cannot be of use in terms of being precise in studies of climatic change, spectral distribution of atmospheric radiation, and other specific meteorological and technological requirements. This book is designed to be of valuable use to meteorologists, climatologists, and physicists. Students, specifically graduate students, can also make use of the book as well.