Abstract: Total-sky imager (TSI) and hemispheric-sky imager (HSI) each have a hemispherical field of view, and many TSIs are now deployed. These instruments have been used routinely to provide a time series of the fractional sky ...

Abstract: Pyranometers have been used for many years to measure broadband surface incoming solar irradiance, data that is necessary for surface energy budget, cloud forcing, and satellite validation research. Because such measurements ...

Abstract: ational field campaign aiming at atmospheric and oceanic processes associated with the Madden?Julian oscillation (MJO) was conducted in and around the tropical Indian Ocean during October 2011?March 2012. The objective of ...

Abstract: In this paper, an empirical equation is presented that can be used to estimate shortwave cloud optical thickness from measurements and analysis of shortwave broadband irradiances. When applied to a time series of broadband ...

Abstract: The relationship between hemispherical sky cover and nadir-view cloud fraction is examined by using both model simulations and surface observations. Monte Carlo simulations of ground-based hemispherical measurements are ...

Abstract: auru Island at times generates low clouds that impact low-level cloud statistics and downwelling shortwave radiation measurements made at the Atmospheric Radiation Measurement Program (ARM) site. This study uses five years ...

Abstract: loud radiative effects are examined using long-term datasets collected at the U.S. Department of Energy?s three Atmospheric Radiation Measurement Program Climate Research Facilities in the tropical western Pacific Ocean. ...

Abstract: loud radiative effects on surface downwelling fluxes are investigated using datasets from the Atmospheric Radiation Measurement Program (ARM) sites in the tropical western Pacific Ocean (TWP) region. The Nauru Island ...

Abstract: An Atmospheric Radiation and Cloud Station (ARCS) was established on the island of Nauru by the Atmospheric Radiation Measurement (ARM) Program. Analysis of the Nauru99 field experiment data indicated that measurements at ...