ISLSCP II Earth Radiation Budget Experiment (ERBE) Monthly Albedo, 1986-1990

The goals of the Earth Radiation Budget Experiment (ERBE) are (1) to understand the radiation balance between the Sun, Earth, atmosphere, and space and (2) to establish an accurate, long-term baseline data set for detection of climate changes. Earth Radiation Budget (ERB) data are fundamental to the development of realistic climate models and to the understanding of natural and anthropogenic perturbations of the climate system. As part of ERBE, measurements of broadband shortwave radiation reflected from the Earth-atmosphere system were obtained, from which top of atmosphere albedo values were calculated. In addition, values from scenes determined to be free of clouds were analyzed separately and clear-sky albedos were derived.For this study, only the clear-sky albedos are included. The ERBE data sets for the International Satellite Land Surface Climatology Project (ISLSCP) Initiative II contain global, top of atmosphere, clear sky albedo data from January 1986 to February 1990. The original ERBE albedo data at 2.5 degree spatial resolution were re-gridded to a 1 degree spatial resolution by the ISLSCP II staff. Both the original data at 2.5 degree resolution and the 1 degree data set are provided.

地球辐射收支实验（ERBE）的目标在于（1）理解太阳、地球、大气以及空间之间的辐射平衡，以及（2）建立一个精确且长期的基础数据集，以监测气候变化。地球辐射收支（ERB）数据对于构建真实的气候模型以及理解气候系统的自然和人为扰动至关重要。作为ERBE项目的一部分，对地球-大气系统反射的宽带短波辐射进行了测量，据此计算了大气顶部的反照率值。此外，针对被判定为无云的景象，分析了其数值并推导出晴空反照率。本研究仅包含晴空反照率数据。国际卫星陆地表面气候学计划（ISLSCP）二期项目中，ERBE数据集包含了1986年1月至1990年2月期间的全球大气顶部晴空反照率数据。ISLSCP二期项目工作人员将原始的2.5度空间分辨率的ERBE反照率数据重网格化至1度空间分辨率。原始的2.5度分辨率数据和1度分辨率数据集均予以提供。