A study of the characteristics of VHF radar echo power in the Taiwan area

Y. H. Chu; T. S. Hsu; L. H. Chen; J. K. Chao; C. H. Liu; J. Röttger

doi:10.1029/RS025i004p00527

A study of the characteristics of VHF radar echo power in the Taiwan area

Y. H. Chu, T. S. Hsu, L. H. Chen, J. K. Chao, C. H. Liu, J. Röttger

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11 Scopus citations

Abstract

In this paper the mean gradient of the generalized potential refractive index, denoted by M, calculated from the meteorological data observed at Pan‐Chiao rawinsonde station and the vertical echo power measured with the Chung‐Li VHF radar are studied. It is found that the ratio of wet term to dry term in M varies from 20 dB at 1 km to −10 dB at 10 km, where 0 dB is occurred at 8 km. This indicates that the magnitude of M is dominated by the contribution of humidity below 8 km. The correlation between echo power and M² is good. The slope of the regression line relating the echo power and M² is found to change for different weather conditions. Furthermore, the echo power profiles during the period of typhoon passage are analyzed. The variation of tropopause height and the maximum radar detectable height during the typhoon passage will be studied.

Original language	English
Pages (from-to)	527-538
Number of pages	12
Journal	Radio Science
Volume	25
Issue number	4
DOIs	https://doi.org/10.1029/RS025i004p00527
State	Published - 1990

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title = "A study of the characteristics of VHF radar echo power in the Taiwan area",

abstract = "In this paper the mean gradient of the generalized potential refractive index, denoted by M, calculated from the meteorological data observed at Pan‐Chiao rawinsonde station and the vertical echo power measured with the Chung‐Li VHF radar are studied. It is found that the ratio of wet term to dry term in M varies from 20 dB at 1 km to −10 dB at 10 km, where 0 dB is occurred at 8 km. This indicates that the magnitude of M is dominated by the contribution of humidity below 8 km. The correlation between echo power and M2 is good. The slope of the regression line relating the echo power and M2 is found to change for different weather conditions. Furthermore, the echo power profiles during the period of typhoon passage are analyzed. The variation of tropopause height and the maximum radar detectable height during the typhoon passage will be studied.",

author = "Chu, {Y. H.} and Hsu, {T. S.} and Chen, {L. H.} and Chao, {J. K.} and Liu, {C. H.} and J. R{\"o}ttger",

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T1 - A study of the characteristics of VHF radar echo power in the Taiwan area

AU - Chu, Y. H.

AU - Hsu, T. S.

AU - Chen, L. H.

AU - Chao, J. K.

AU - Liu, C. H.

AU - Röttger, J.

PY - 1990

Y1 - 1990

N2 - In this paper the mean gradient of the generalized potential refractive index, denoted by M, calculated from the meteorological data observed at Pan‐Chiao rawinsonde station and the vertical echo power measured with the Chung‐Li VHF radar are studied. It is found that the ratio of wet term to dry term in M varies from 20 dB at 1 km to −10 dB at 10 km, where 0 dB is occurred at 8 km. This indicates that the magnitude of M is dominated by the contribution of humidity below 8 km. The correlation between echo power and M2 is good. The slope of the regression line relating the echo power and M2 is found to change for different weather conditions. Furthermore, the echo power profiles during the period of typhoon passage are analyzed. The variation of tropopause height and the maximum radar detectable height during the typhoon passage will be studied.

AB - In this paper the mean gradient of the generalized potential refractive index, denoted by M, calculated from the meteorological data observed at Pan‐Chiao rawinsonde station and the vertical echo power measured with the Chung‐Li VHF radar are studied. It is found that the ratio of wet term to dry term in M varies from 20 dB at 1 km to −10 dB at 10 km, where 0 dB is occurred at 8 km. This indicates that the magnitude of M is dominated by the contribution of humidity below 8 km. The correlation between echo power and M2 is good. The slope of the regression line relating the echo power and M2 is found to change for different weather conditions. Furthermore, the echo power profiles during the period of typhoon passage are analyzed. The variation of tropopause height and the maximum radar detectable height during the typhoon passage will be studied.

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DO - 10.1029/RS025i004p00527

M3 - 期刊論文

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SN - 0048-6604

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SP - 527

EP - 538

JO - Radio Science

JF - Radio Science

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ER -

A study of the characteristics of VHF radar echo power in the Taiwan area

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