Environmental monitoring methods (contact methods, remote methods, biological methods)

Information about the state of the natural environment and changes in this state has long been used by people to plan their activities. For more than 100 years, observations of changes in weather and climate have been conducted regularly in the civilized world. These are all familiar meteorological, phenological, seismological and some other types of observations and measurements of the state of the environment. Now no one needs to be convinced that the state of the natural environment must be constantly monitored. The range of observations, the number of measured parameters, and the network of observation stations are becoming more and more extensive. Problems related to environmental monitoring are becoming more complex.