Introduction
The document discusses the measurement of aerosol properties and the solar spectrum, emphasizing the importance of understanding atmospheric aerosols for climate change prediction and weather forecasting. Aerosols, such as water vapor and suspended particles, absorb and scatter solar radiation, influencing cloud formation and atmospheric chemical reactions.

Specifications
The POM-01 Sky Radiometer and PGS-100 Sun Photometer are key instruments for measuring solar radiation. The POM-01 uses a silicon photo-diode detector and a rotating filter wheel to measure radiation in seven narrow wavebands from 315 nm to 1020 nm. It includes a sun tracker and a precipitation sensor to protect the optics. The PGS-100 measures the continuous spectrum of direct solar radiation from 350 nm to 1050 nm using a solid-state spectrometer with a CCD detector array.

Procedures
Both instruments require connection to a computer running Windows™ operating software for data acquisition and storage. The software allows user selection of scanning modes and scheduling, but does not provide post-processing or analysis of the data.

Applications
The POM and PGS instruments are weatherproof and designed for long-term use with minimal maintenance. They are used globally for automatic solar radiation measurements in meteorology, climatology, atmospheric chemistry, and pollution studies. The POM is part of the Asia-Pacific SKYNET network for aerosol monitoring, while the PGS-100 is used in photovoltaic solar energy research.

Norms and Recommendations
Both instruments have options for operation in extreme climates and include dust protection systems. The POM-02 extends the waveband range to 2200 nm, allowing for the monitoring of larger aerosols. Regular maintenance involves cleaning optical windows and checking desiccants.

Technical Specifications
The document provides detailed specifications for the POM-01, POM-02, and PGS-100, including wavelength ranges, detector types, operating temperature ranges, and communication requirements. The POM-01 and POM-02 use UV-enhanced silicon photo-diodes, while the PGS-100 uses a silicon CCD array.

Conclusion
The instruments discussed are crucial for advancing research in solar radiation and atmospheric aerosols, providing valuable data for improving climate models and solar energy technologies.