Schematic diagram of atmospheric thermodynamic action

The schematic drawing of atmospheric thermal action is as follows:

Clear the title and explain that arrows with different thicknesses are used to indicate the difference of energy in the diagram; Solar radiation reaches the ground after being slightly weakened by the atmosphere, including reflection (represented by clouds) and absorption.

data expansion:

atmospheric thermodynamics is a subject that studies atmospheric thermodynamic processes by applying thermodynamic principles and a branch of atmospheric physics. Before 197s, atmospheric thermodynamics was only a supplement to atmospheric dynamics. Since 198s, people have gradually realized that thermodynamic factors have an important influence on the long-term behavior of the atmosphere and the earth system. Therefore, with the in-depth study of climate and global change, atmospheric thermodynamics has been placed in an increasingly important position.

research history:

modern meteorology begins with the weather analysis of atmospheric observation, that is, the analysis of weather maps and the prediction of future weather based on them; On the other hand, it is applied mechanics to try to explain the weather phenomena found. Therefore, in the early 2th century, atmospheric dynamics research began, such as the application of fluid mechanics to develop the circulation theory.

in 193s, Rossby wave was discovered by wave mechanics, which initiated geophysical fluid mechanics. In the early 195s, numerical weather forecast based on barotropic model was realized, so dynamics has always been in a dominant position in atmospheric science.

since 198s, great progress has been made in the study of atmospheric nonlinear dynamics, but the progress of nonlinear thermodynamics is not so remarkable and lags behind the former. At the same time, atmospheric nonlinear dynamics and nonlinear thermodynamics are studied by different theoretical systems and methods, and they develop independently, and rarely involve the relationship between them.

Before 197s, atmospheric thermodynamics was based on classical thermodynamics, and it was only regarded as a supplement to atmospheric dynamics. For example, in the 194s, the development theory of thermal wind put forward the concept of thermal wind and its mechanical expression. At the same time, based on the concepts of geopotential temperature and pseudo-equivalent geopotential temperature, thermodynamic charts are developed for weather forecasting practice.

since the 197s, physics has made a breakthrough in thermodynamics. Prigogine and others put forward the concept and theory of dissipative structure, formed the Brussels School, and won the Nobel Prize for it, which also promoted the development of atmospheric thermodynamics. For example, the entropy balance theory and thermodynamic entropy model of atmospheric system are developed, and the self-organization phenomenon in the atmosphere is discussed.