LEVEL AND DIFFUSIVITY CHANGES IN ILLUMINANCES UNDER CLEAR SKIES

Measured and modelled UV under clear skies at four sites

Towards closure between measured and modelled UV under clear skies at four diverse sites J. Badosa, R. L. McKenzie, M. Kotkamp, J. Calbó, J. A. González, P. V. Johnston, M. O’Neill, and D. J. Anderson Departament de Fı́sica, Grup de Fisica Ambiental, Universitat de Girona, Girona, Spain National Institute of Water and Atmospheric Research (NIWA), Lauder, New Zealand Cooperative Institute for Res...

Vertical Illuminance Measurement for Clear Skies in Tehran

Towards closure between measured and modelled UV under clear skies at four diverse sites

The purpose of this work is determine the extent of closure between measurements and models of UV irradiances at diverse sites using state of the art instruments, models, and the best available data as inputs to the models. These include information about aerosol optical depth (unfortunately not extending down as far into the UVB region as desirable because such information is not generally ava...

Spectral polarization of clear and hazy coastal skies.

Linear polarization of the clear daytime sky has often been measured as a spectrally integrated or quasi-monochromatic variable, but seldom as a spectral one. So we use a hyperspectral imaging system to measure skylight polarization at high spectral and angular resolutions for clear and hazy skies at our coastal site. The resulting polarization maps and spectra exhibit both commonalities and di...

vertical illuminance measurement for clear skies in tehran

to effectively design daylight in buildings, daylight availability data are necessary. although there is a great potential for daylight energy in iran, its use has been hampered by the absence of measured data. in this paper the illuminance data on the vertical south facing surfaces of tehran were estimated using the iesna model. for this propose an illuminance measuring set was used in order t...