The Letter takes up a question of what radio emission is produced by electrons at the very acceleration site of a solar flare. Specifically, we calculate incoherent radio emission produced within two competing acceleration models—stochastic acceleration by cascading MHD turbulence and regular acceleration in collapsing magnetic traps. Our analysis clearly demonstrates that the radio emission fr...

OBJECTIVE Solar ultraviolet (UV) radiation is an important environmental factor that affects human health. The understanding of diurnal variations of UV radiation at anatomical sites may be helpful in developing ways to protect humans from the harmful effects of UV radiation. METHODS In order to characterize the diurnal variations, the UV exposure values were measured at 30 min intervals by u...

High quality data of surface radiation is a prerequisite for climate monitoring (Earth radiation budget) and solar energy applications. A very common method to derive solar surface irradiance is the Heliosat method, a one channel approach for the retrieval of the effective cloud albedo (CAL). This information is then used to derive the solar surface irradiance by application of a clear sky mode...

|DATA-CHASER consists of two synergetic projects, DATA and CHASER, which ew together as a Hitchhiker payload aboard the Space Shuttle Discovery in August of 1997. CHASER (Colorado Hitchhiker And Student Experiment of solar Radiation) is a solar science experiment used to test the primary DATA pay-load. A technology experiment, DATA (Distribution and Automation Technology Advancement) seeks to a...

10 Cool-pigmented roofing systems could play an important role in the reduction of energy 11 consumption. Cool roofs are those that show high reflectance of sunlight and are designed to 12 retain the ability over time. Airborne particulate matter that settles on a roof can either reflect or 13 absorb incoming solar radiation, dependent on the chemical content and size of the particles 14 thereb...