Get premium membership and access questions with answers, video lessons as well as revision papers.

Describe the Zero-dimensional models

Describe the Zero-dimensional models

Answers

This yields an apparent effective average earth temperature of 288 K (15 °C; 59 °F).[4] This is because the above equation represents the effective radiative temperature of the Earth (including the clouds and atmosphere). The use of effective emissivity and albedo account for the greenhouse effect.
This very simple model is quite instructive, and the only model that could fit on a page. For example, it easily determines the effect on average earth temperature of changes in solar constant or change of albedo or effective earth emissivity.
The average emissivity of the earth is readily estimated from available data. The emissivities of terrestrial surfaces are all in the range of 0.96 to 0.99 (except for some small desert areas which may be as low as 0.7). Clouds, however, which cover about half of the earth’s surface, have an average emissivity of about 0.5 (which must be reduced by the fourth power of the ratio of cloud absolute temperature to average earth absolute temperature) and an average cloud temperature of
about 258 K (-15 °C; 5 °F). Taking all this properly into account results in an effective earth emissivity of about 0.64 (earth average temperature 285 K (12 °C; 53 °F)).
This simple model readily determines the effect of changes in solar output or change of earth albedo or effective earth emissivity on average earth temperature. It says nothing, however about what might cause these things to change. Zero-dimensional models do not address the temperature distribution on the earth or the factors that move energy about the earth.

---

francis1897 answered the question on January 11, 2023 at 11:20

Next: Discuss box models as used climate modelling
Previous: Discuss the Radiative-convective models

View More Climatology Questions and Answers | Return to Questions Index

Related Questions

• Discuss box models as used climate modelling(Solved)
  

  Discuss box models as used climate modelling

  Date posted: January 11, 2023.  Answers (1)

• Describe climatic modelling(Solved)
  

  Describe climatic modelling

  Date posted: January 11, 2023.  Answers (1)

• Discuss climate sensitivity(Solved)
  

  Discuss climate sensitivity

  Date posted: January 11, 2023.  Answers (1)

• Discuss local climates or microclimates(Solved)
  

  Discuss local climates or microclimates

  Date posted: January 11, 2023.  Answers (1)

• With the use of a diagram, describe the soil water balance(Solved)
  

  With the use of a diagram, describe the soil water balance

  Date posted: January 11, 2023.  Answers (1)

• Discuss the various components of water-balance(Solved)
  

  Discuss the various components of water-balance

  Date posted: January 11, 2023.  Answers (1)

• Discuss the term water balance(Solved)
  

  Discuss the term water balance

  Date posted: January 11, 2023.  Answers (1)

• State the categories of plants based on the reaction to chillness(Solved)
  

  State the categories of plants based on the reaction to chillness

  Date posted: January 11, 2023.  Answers (1)

• Discuss the types of Cold Injury(Solved)
  

  Discuss the types of Cold Injury

  Date posted: January 11, 2023.  Answers (1)

• Discuss the effect of Temperature on Plant growth/crop production(Solved)
  

  Discuss the effect of Temperature on Plant growth/crop production

  Date posted: January 11, 2023.  Answers (1)

• When does maximum production of dry matter occur?(Solved)
  

  When does maximum production of dry matter occur?

  Date posted: January 11, 2023.  Answers (1)

• State the reasons why temperature is of paramount importance for organic life(Solved)
  

  State the reasons why temperature is of paramount importance for organic life

  Date posted: January 11, 2023.  Answers (1)

• Some investigators have classified the vegetation of the world into four classes based on the prevailing temperature conditions. State the classes(Solved)
  

  Some investigators have classified the vegetation of the world into four classes based on the prevailing temperature conditions. State the classes

  Date posted: January 11, 2023.  Answers (1)

• Discuss the factors affecting radiation distribution(Solved)
  

  Discuss the factors affecting radiation distribution

  Date posted: January 11, 2023.  Answers (1)

• State what governs the amount of insolation received on any date at any place on the earth(Solved)
  

  State what governs the amount of insolation received on any date at any place on the earth

  Date posted: January 11, 2023.  Answers (1)

• Describe the processes of heat energy transfer(Solved)
  

  Describe the processes of heat energy transfer

  Date posted: January 11, 2023.  Answers (1)

• Discuss light as used in climatology.(Solved)
  

  Discuss light as used in climatology.

  Date posted: January 11, 2023.  Answers (1)

• Discuss solar radiation (Solved)
  

  Discuss solar radiation

  Date posted: January 11, 2023.  Answers (1)

• State the classification of climate based on latitude(Solved)
  

  State the classification of climate based on latitude

  Date posted: January 11, 2023.  Answers (1)

• The crop regions are classified on the basis of average rainfall. Describe(Solved)
  

  The crop regions are classified on the basis of average rainfall. Describe

  Date posted: January 11, 2023.  Answers (1)