Comparison of brightness temperatures observed from ground-based microwave radiometers during TUC

被引:17
作者
Cimini, D [1 ]
Hewison, TJ
Martin, L
机构
[1] IMAA, CNR, I-85050 Tito, PZ, Italy
[2] Univ Colorado, CIRES, Boulder, CO 80309 USA
[3] Univ Reading, Met Off, Reading, Berks, England
[4] Univ Bern, Inst Appl Phys, CH-3012 Bern, Switzerland
关键词
D O I
10.1127/0941-2948/2006/0096
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
The agreement of two ground-based microwave radiometers during the Temperature, hUmidity, and Cloud (TUC) profiling campaign has been evaluated in terms of measured brightness temperature. To account effectively the instruments' specifications, we discuss and estimate an equivalent monochromatic frequency, which significantly reduces the bias introduced by ideal monochromatic modelling. The effect of this equivalent monochromatic frequency can reach 0.4 K and thus we recommend its use in further study involving TUC radiometers. This analysis showed agreement within expectations for three of the four selected pairs of channels, although results are strictly valid in a limited range. As a consequence, the derived products are expected to be of the same quality. However, the inconsistency found in the remaining pair is expected to propagate in the retrieved humidity profiles.
引用
收藏
页码:19 / 25
页数:7
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