利用TRMM PR分析半全球降水的年代际变率

2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) Pub Date : 2015-07-26 DOI:10.1109/IGARSS.2015.7326987

Kaya Kanemaru, T. Kubota, M. Kachi, R. Oki, T. Iguchi, Y. Takayabu

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引用次数: 0

摘要

热带降雨测量任务(TRMM)降水雷达(PR)的降水观测持续了近17年。长期PR数据的同质性对于研究与年际变率和年代际变化相关的水循环变化至关重要。在本研究中，我们的目标是利用17年的PR数据建立降水气候数据。本文对PR数据进行了调整，以减轻PR硬件(H/W)变化的不连续性。调整后的数据减轻了由PR H/W变化引起的风暴顶高度的明显不连续性。调整后的半全球(35S-35N)降水比原始资料减少0.98%。

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A decadal variability of semi-global precipitation by TRMM PR

Precipitation observation by the Tropical Rainfall Measuring Mission's (TRMM's) Precipitation Radar (PR) lasted for almost 17 years. Homogeneity of long-term PR data will be essential to study the water cycle change related to the interannual variability and the decadal change. In this study, we aim to develop a precipitation climate data from 17-year PR data. In this paper, PR data are adjusted to mitigate the discontinuity of the PR hardware (H/W) change. An obvious discontinuity of storm top height caused by the PR H/W change is mitigated creating the adjusted data. Semi-global (35S-35N) precipitation derived from the adjusted data is decreased by 0.98 % as compared with the original data.

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2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)

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