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NASA has organized a worldwide Aerosol Robotic Network (AERONET) of Sun photometers. These well characterized instruments (CIMEL Sun photometer) make aerosol optical depth measurements based on the transmission of the direct sunlight through the atmosphere in 5 and 8 spectral bands. AERONET aerosol retrievals are limited to clear sky conditions (no clouds or no cirrus clouds) and retrieve aerosol...
The implications of climatic effects due to aerosols with a large variability like mineral dust serve as indicators of dust events and are examined. Airborne mineral dust can influence the climate by altering the radiative properties of the atmosphere. For instance, aerosols in the form of dust particles reflect the incoming solar radiation to space, thereby reducing the amount of radiation available...
Measurement of polarized properties of the skylight from the ground is one of an effective means of investigating the optical and physical parameters. A new system to measure the natural skylight polarized radiance distribution has been developed. The system is based on the field spectrometer Analytical Spectral Devices (ASD) with a dichroic linear polarizing filter. With this system sequences of...
Improvements to NASA Surface Meteorology and Solar Energy (SSE) web site are now being made through the Prediction of Worldwide Energy Resource (POWER) project under NASA Science Mission Directorate Applied Science Energy Management Program. The purpose of this project is to tailor NASA Science Mission results for energy sector applications and decision support systems. The current status of SSE and...
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