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Atmosphere: The Fluid Envelope That Covers the Planet Earth

  • Klaus Reichardt
  • Luís Carlos Timm
Chapter

Abstract

The fourth subsystem of the Soil–Plant–Atmosphere System (SPAS), described in this book, is the Atmosphere. For the purposes of this book, the water vapor and the solar radiation are the main subjects related to crop production. After discussing the composition and the structure of the atmosphere, water vapor is treated in detail giving the basis for the processes described in the later chapters, as the evaporation of water from the soil surface, the transpiration by plants, evapotranspiration, and agricultural water balances. Solar radiation is treated in more detail, explaining the electromagnetic waves of which it is constituted and introducing concepts and definitions needed for the understanding of the solar radiation as the primary energy available for crop production. The greenhouse effect and the old but still used concept of Degree Days are discussed in relation to plant growth. Aspects of the wind in relation to agriculture are also shortly commented upon.

References

  1. Allen RG, Pereira LS, Raes D, Smith M (1998) Crop evapotranspiration – guidelines for computing crop water requirements. FAO, RomaGoogle Scholar
  2. Ometto JC (1968) Estudo das relações entre radiação solar global, radiação líquida e insolação. PhD Thesis, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, São Paulo state, BrazilGoogle Scholar
  3. Pereira AR, Angelocci LR, Sentelhas PC (2002) Agrometeorologia: fundamentos e aplicações práticas. Agropecuária, GuaíbaGoogle Scholar
  4. Villa Nova NA, Pedro Júnior MJ, Pereira AR, Ometto JC (1972) Estimativa de graus-dia acumulados acima de qualquer temperatura base, em função das temperaturas máxima e mínima. Caderno Ci Terra 30:1–8Google Scholar

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Klaus Reichardt
    • 1
  • Luís Carlos Timm
    • 2
  1. 1.Centro de Energia Nuclear na Agricultura and Escola Superior de Agricultura “Luiz de Queiróz”University of Sao PauloPiracicabaBrazil
  2. 2.Rural Engineering Department, Faculty of AgronomyFederal University of PelotasCapão do LeãoBrazil

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