Anomalies in channel 4 of the NOAA-14 AVHRR

被引：0
|
作者：
Arbelo, M. [1 ]
Podesta, G. [2 ]
Hernandez-Leal, P. A. [1 ]
机构：
[1] Univ La Laguna, Dept Fis, Grp Observ Tierra & Atmosfera, San Cristobal la Laguna 28300, Islas Canarias, Spain
[2] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Remote Sensing Grp, Miami, FL 33149 USA
来源：
REVISTA DE TELEDETECCION | 2005年 / 24期
关键词：
sea surface temperature; AVHRR; errors; high latitudes;
D O I：
暂无
中图分类号：
TP7 [遥感技术];
学科分类号：
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要：
Errors in brightness temperatures for channel 4 in the Advanced Very High Resolution Radiometer (AVHRR) onboard the NOAA-14 spacecraft are examined. The errors involve a low frequency of occurrence for some values, and a corresponding enhancement of frequency for others. Errors appear to be related to the conversion of analog to digital values. Unfortunately, it is not possible to identify and separate erroneous values. The most apparent errors in geophysical products derived from AVHRR's channel 4 occur at low brightness temperatures, therefore sea surface temperatures in high latitudes (below about 6 degrees C) and cloud-related products must be used with caution, as they may have systematic errors as large as 0.5 degrees C
引用
收藏
页码：85 / 88
页数：4
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