Agro-meteorological Observatory

A Meteorological observatory is an area where all the weather instruments and structures are installed. The chapter gives a description of a meteorological observatory, different types of agro-meteorological observatories classified by the World Meteorological Organization (WMO). The chapter gives an insight into the type of instruments required and the frequency of observations for these observatories. The site selected for the establishment of Agro-meteorological Observatory should satisfy some basic requirements. The chapter gives in detail the pre-requisites for the establishment of agro-meteorological observatory and the recommended layout of observatory. The time of observation of different parameters and the order in which the observations are taken is also discussed. Local Mean Time (LMT) is based on the average length of a solar day. It is a timekeeping method using the Sun’s movements across the sky. In order to explain Local Mean Time, a few other terms need to be understood. Other terms associated with the Local Mean Time have been discussed. The chapter gives details of the Local Mean Time and the calculation of Local Mean Time of a location.