What is one of the main purposes of solar panels in RAWS operations?

The primary purpose of solar panels in Remote Automated Weather Stations (RAWS) operations is to charge backup batteries. Solar panels convert sunlight into electricity, which can then be stored in batteries for use when sunlight is not available, such as during the night or cloudy weather. This ensures that the weather monitoring systems remain operational continuously, providing reliable data collection and communication. The use of solar energy is particularly valuable in remote locations where access to traditional power sources may be limited or nonexistent.

Other options, while they may pertain to different systems or technologies, do not reflect the core function of solar panels within the context of RAWS operations. For instance, audio communication, visual displays, and irrigation systems are not directly powered by solar panels in this context, as their main role is to support power supply autonomy for continuous weather monitoring.