Version 1
: Received: 20 July 2017 / Approved: 21 July 2017 / Online: 21 July 2017 (04:58:56 CEST)
How to cite:
Zheng, J.; Liu, L.; Zhu, K.; Wu, J.; Wang, B. Retrieving Vertical Air Velocity in Convective Cloud over the Tibetan Plateau from TIPEX-III Cloud Radar Doppler Spectra. Preprints2017, 2017070060. https://doi.org/10.20944/preprints201707.0060.v1
Zheng, J.; Liu, L.; Zhu, K.; Wu, J.; Wang, B. Retrieving Vertical Air Velocity in Convective Cloud over the Tibetan Plateau from TIPEX-III Cloud Radar Doppler Spectra. Preprints 2017, 2017070060. https://doi.org/10.20944/preprints201707.0060.v1
Zheng, J.; Liu, L.; Zhu, K.; Wu, J.; Wang, B. Retrieving Vertical Air Velocity in Convective Cloud over the Tibetan Plateau from TIPEX-III Cloud Radar Doppler Spectra. Preprints2017, 2017070060. https://doi.org/10.20944/preprints201707.0060.v1
APA Style
Zheng, J., Liu, L., Zhu, K., Wu, J., & Wang, B. (2017). Retrieving Vertical Air Velocity in Convective Cloud over the Tibetan Plateau from TIPEX-III Cloud Radar Doppler Spectra. Preprints. https://doi.org/10.20944/preprints201707.0060.v1
Chicago/Turabian Style
Zheng, J., Jingya Wu and Binyun Wang. 2017 "Retrieving Vertical Air Velocity in Convective Cloud over the Tibetan Plateau from TIPEX-III Cloud Radar Doppler Spectra" Preprints. https://doi.org/10.20944/preprints201707.0060.v1
Abstract
In the summertime, convections occur frequently over the Tibetan Plateau (TP) because of the large dynamic and thermal effects of the landmass. Measurements of vertical air velocity in convective cloud are useful for advancing our understanding of the dynamic and microphysical mechanisms of clouds and can be used to improve the parameterization of current numerical models. This paper presents a technique for retrieving high-resolution vertical air velocity from convective cloud over the TP, by using Doppler spectra from a vertically pointing Ka-band cloud radar. The method is based on the development of a “small-particle-traced” idea and the necessary data processing and uses three modes of radar. Spectral broadening corrections, uncertainty estimations, and result merging are used to ensure accurate results. Qualitative analysis of two typical convective cases shows that the retrievals are reliable and agree with the expectant results inferred from other radar measurements. A quantitative retrieval of vertical air motion from a ground-based optical disdrometer is used to preliminarily validate our radar-derived results. The comparison illustrates that while the data trends from the two methods of retrieval are similar, with the updrafts and downdrafts coinciding, cloud radar has a much higher resolution and can reveal the small-scale variation of vertical air motion.
Keywords
vertical air velocity; millimeter-wave cloud radar; convective cloud; Tibetan Plateau
Subject
Environmental and Earth Sciences, Atmospheric Science and Meteorology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
