Signal Postprocessing and Reflectivity Calibration of the Atmospheric Radiation Measurement Program 915-MHz Wind Profilers
Signal Postprocessing and Reflectivity Calibration of the Atmospheric Radiation Measurement Program 915-MHz Wind Profilers
复制标题
大气辐射测量程序 915 MHz 风廓线仪的信号后处理和反射率校准
DOI:
10.1175/jtech-d-12-00146.1
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发表时间:
2013
影响因子:
2.2
通讯作者:
Battaglia A
中科院分区:
文献类型:
--
作者:
Battaglia A
The Department of Energy Atmospheric Radiation Measurement (ARM) Program has recently initiated a new research avenue toward a better characterization of the transition from cloud to precipitation. Dual-wavelength techniques applied to millimeter-wavelength radars and a Rayleigh reference have a great potential for rain-rate retrievals directly from dual-wavelength ratio measurements. In this context, the recent reconfiguration of the ARM 915-MHz wind profilers in a vertically pointing mode makes these instruments the ideal candidate for providing the Rayleigh reflectivity/Doppler velocity reference. Prior to any scientific study, the wind profiler data must be carefully quality checked. This work describes the signal postprocessing steps that are essential for the delivery of high-quality reflectivity and mean Doppler velocity products—that is, the estimation of the noise floor from clear-air echoes, the absolute calibration with a collocated disdrometer, the dealiasing of Doppler velocities, and the merging of the different modes of the wind profiler. The improvement added by the proposed postprocessing is confirmed by comparison with a high-quality S-band profiler deployed at the ARM Southern Great Plains site during the Midlatitude Continental Convective Clouds Experiment. With the addition of a vertically pointing mode and with the postprocessing described in this work in place, besides being a key asset for wind research wind profilers observations may therefore become a centerpiece for rain studies in the years to come.
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DOI:
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发表时间:
2005
期刊:
影响因子:
--
作者:
C. Williams;K. Gage;Wallace L. Clark;P. Kucera
通讯作者:
P. Kucera
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
K. Gage;C. Williams;P. E. Johnston;W. Ecklund;R. Cifelli;A. Tokay;D. A. Carter
通讯作者:
D. A. Carter
DOI:
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发表时间:
2002
期刊:
影响因子:
--
作者:
K. Gage;C. Williams;W. Clark;P. E. Johnston;D. A. Carter
通讯作者:
D. A. Carter
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
C. Williams;W. Ecklund;P. E. Johnston;K. Gage
通讯作者:
K. Gage
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
S. Matrosov
通讯作者:
S. Matrosov