0

Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Terminal Doppler Weather Radar (TDWR) observation of atmospheric flow over complex terrain during tropical cyclone passages

[+] Author Affiliations
Chi M. Shun, Sharon S. Y. Lau

Hong Kong Observatory (China)

Proc. SPIE 4152, Microwave Remote Sensing of the Atmosphere and Environment II, 42 (December 21, 2000); doi:10.1117/12.410622
Text Size: A A A
From Conference Volume 4152

  • Microwave Remote Sensing of the Atmosphere and Environment II
  • Thomas T. Wilheit; Harunobu Masuko; Hiroyuki Wakabayashi
  • Sendai, Japan | October 09, 2000

abstract

To facilitate warning of low-level wind shear associated with convective storms, a Terminal Doppler Weather Radar (TWDR) was installed about 12 km to the northeast of the Hong Kong International Airport (HKIA). The HKIA is located just off the northern shore of an island known as Lantau. The HKIA lies on the lee side of the complex terrain of Lantau when winds come from the east through the southwest. With the commissioning of the TDWR in 1997, interesting high-resolution radar data were collected in strong southerly flows during tropical cyclone passages. These data sets reveal the complex low-level atmospheric flow in the vicinity of the HKIA, including streaks of low-speed flow, reverse flows, small-scale vortices and high-speed gap flows. Animation sequences of the radar images suggest existence of von Karman vortex streets and vortex shedding in the wake regions. These phenomena could induce strong shear regions which led to significant low-level wind shear for landing/departing aircraft. Analysis of on-board flight data for a wind shear event experienced by a landing aircraft in strong southeasterly flow revealed that terrain- induced features with horizontal scale less than 1 km brought significant air speed changes to the aircraft over a short duration of time.

© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Chi M. Shun and Sharon S. Y. Lau
"Terminal Doppler Weather Radar (TDWR) observation of atmospheric flow over complex terrain during tropical cyclone passages", Proc. SPIE 4152, Microwave Remote Sensing of the Atmosphere and Environment II, 42 (December 21, 2000); doi:10.1117/12.410622; http://dx.doi.org/10.1117/12.410622


Access This Article
Sign In to Access Full Content
Please Wait... Processing your request... Please Wait.
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
 

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement


Buy this article ($18 for members, $25 for non-members).
Sign In