Thermally driven diurnally periodic wind signals off the east coast of China

The characteristics of thermally driven diurnally periodic wind signals off the east coast of China are studied using hourly model data for the period June 2006-11 simulated with a mesoscale model. Analysis of these model data indicates low-level diurnally periodic wind signals propagate eastward off the southeast coast, whereas diurnal wind variations off the northeast coast are nearly in phase. It is found that a simple 2D linear land-sea-breeze model with friction can capture this main difference in propagation character with respect to latitude. Idealized simulations using a simplified version of the mesoscale model that includes surface heating and terrain are found to explain certain features not captured by the present linear theory such as the absolute time phase and cross-coast location of the maximum amplitude of the diurnally periodic winds.

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Copyright 2015 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Law (17 USC, as revised by P.L. 94-553) does not require the Society's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statements, requires written permission or license from the AMS. Additional details are provided in the AMS Copyright Policies, available from the AMS at 617-227-2425 or amspubs@ametsoc.org. Permission to place a copy of this work on this server has been provided by the AMS. The AMS does not guarantee that the copy provided here is an accurate copy of the published work.
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Author Du, Yu
Rotunno, Richard
Publisher UCAR/NCAR - Library
Publication Date 2015-07-01T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2023-08-18T18:59:59.934552
Metadata Record Identifier edu.ucar.opensky::articles:16799
Metadata Language eng; USA
Suggested Citation Du, Yu, Rotunno, Richard. (2015). Thermally driven diurnally periodic wind signals off the east coast of China. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d7zw1n4t. Accessed 30 June 2025.

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