Estimation of path-integrated attenuation and its nonuniformity from TRMM/PR range profile data

被引：22

作者：

Takahashi, Nobuhiro ^{[1
]}

Hanado, Hiroshi

Iguchi, Toshio

机构：

[1] Natl Inst Informat & Commun Technol, Tokyo 1848795, Japan

[2] Japan Aerosp Explorat Agcy, Ibaraki 3058505, Japan

来源：

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2006年 / 44卷 / 11期

关键词：

nonuniform beam filling (NUBF); surface echo; Tropical Rainfall Measuring Mission (TRMM);

D O I：

10.1109/TGRS.2006.876295

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Range profile data from the surface echo of the Precipitation Radar (PR) onboard the Tropical Rainfall Measuring Mission (TRMM) satellite enable the assessment of the nonuniformity of rainfall. The surface echo profile can be converted to a horizontal pattern of surface echo strength within the PR's footprint at off-nadir angles. Then, using the no-rain surface echo profile over ocean as a reference, the horizontal pattern of the path-integrated attenuation (PIA) can be estimated under moderate to heavy rainfall. Based on the horizontal pattern of the PIA, the nonuniform beam-filling parameter is estimated. However, this technique is applicable only to off-nadir angles and over ocean. Comparisons using ground-based radar data obtained simultaneously with TRMM data verify the effectiveness of this technique.

引用

页码：3276 / 3283

页数：8

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