Solar Radiation Processes on the East Antarctic Plateau

0003826沃伦这个项目是在东南极洲的法国-意大利站Dome C进行的近地表太阳辐射过程的实验研究。 该项目将与法国格勒诺布尔的冰川学和地球物理学环境研究所合作进行。 重点将放在雪对阳光的反射和阳光通过云层的透射上。 这些观测将与气候、遥感和冰雪物理学有关。将测量太阳辐射通过云层的光谱（窄带）和宽头传输，这些测量将用于获得有效的云光学深度，用于估计气候模型中的云辐射强迫。 将开发一种仅从日射强度计获得这一信息的方法，以便可以分析南极内陆太阳辐射观测的历史记录，以获得关于云的气候信息，对雪面反射的太阳辐射角型的观测将使卫星获得的大气廓线信息得到验证。 将通过大气层辐射传输模型，使测得的表面反射函数与NOAA系列极轨道卫星上的高级摄像管高分辨率辐射计获得的经验函数相一致。 最后，将准确定位雪冰的光谱峰值，以解决纯冰在可见光至近紫外范围内的光谱吸收的差异。

0003826WarrenThis project is an experimental study of solar radiation processes near the surface at Dome C, the French-Italian station in East Antarctica. It will be carried out in cooperation with the Labortatoire de Glaciologie et Geophysique de l'Environment in Grenoble, France. The emphasis will be on the reflection of sunlight by snow, and the transmission of sunlight through clouds. The observations will have relevance to climate, remote sensing, and the physics of ice and snow. Both spectral (narrow-band) and broadhead transmissions of solar radiation through clouds will be measured, and these measurements will be used to obtain effective cloud optical depths for use in estimating cloud radiative forcing with applications in climate models. A method to obtain this information from pyranometers alone will be developed so that the historical record of solar radiation observations in the antarctic interior can be analyzed for climatological information on clouds.Observations of the angular pattern of solar radiation reflected from the snow surface will allow the validation of satellite-derived atmospheric profile information. The measured surface reflection functions will be reconciled with the empirical functions obtained from Advanced Vidicon High Resolution Radiometers (AVHRR) on the NOAA series of polar orbiting satellites by radiative transfer modeling through the atmosphere. Finally, the spectral peak of snow albedo will be accurately located in order to resolve a discrepancy concerning the spectral absorption of pure ice in the visible to near-ultraviolet range.