YIN Xiaobin, WANG Zhenzhan. Effect of the sun on biases in SMOS brightness temperature over ocean surfaces[J]. Journal of Remote Sensing, 2013,17(5):1049-1059.
YIN Xiaobin, WANG Zhenzhan. Effect of the sun on biases in SMOS brightness temperature over ocean surfaces[J]. Journal of Remote Sensing, 2013,17(5):1049-1059. DOI: 10.11834/jrs.20132258.
Up-to-date Soil Moisture and Ocean Salinity(SMOS) level 1C(L1C) Brightness Temperatures(TB)
which are p rocessed with the operational prototype V5.04 and V5.05
are used to analyze the systematic biases between averaged TB measurements and simulations in Fields of View(FOV) from May 2010 to April 2012.The peak-to-peak variations in the biases are higher than 1 K in magnitude.Sun contaminations
including sun alias and sun tails
are strong sources of bias variations in the FOV.The sun correction in the level 1(L1) image reconstruction is imperfect.By using the antenna model in L1
seasonal variations in the biases and the heating of the instrument are observed.
关键词
亮温偏差季节变化海表面天线温度太阳修正
Keywords
brightness temperature biasestemporal variationocean surfaceantenna temperaturesun correction