Impacts of coastal upwelling off east Vietnam on the regional winds system: An air-sea-land interaction

Zhe Wen Zheng; Quanan Zheng; Yi Chun Kuo; Ganesh Gopalakrishnan; Chia Ying Lee; Chung Ru Ho; Nan Jung Kuo; Shih Jen Huang

doi:10.1016/j.dynatmoce.2016.10.002

Impacts of coastal upwelling off east Vietnam on the regional winds system: An air-sea-land interaction

Zhe Wen Zheng^*, Quanan Zheng, Yi Chun Kuo, Ganesh Gopalakrishnan, Chia Ying Lee, Chung Ru Ho, Nan Jung Kuo, Shih Jen Huang

^*Corresponding author for this work

Department of Earth Sciences (Include Institute of Marine Environmental Science and Technology)

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

In this study, we analyze the influence of coastal upwelling off southeast Vietnam (CUEV) on local wind field using numerical simulations based on atmospheric model of Weather Research and Forecasting (WRF). Several scenarios are simulated by forcing identical model configurations with different SST fields. Based on simulation results, the relationship between CUEV and reduction of wind forcing is numerically evidenced. With the influence of a typical cold patch with a temperature drop of 3–5 °C, the local wind speeds can drop to less than 70% of original level. We find that the mechanism of response of the wind reduction to CUEV is enhancement of sea-breeze induced wind modulation. Onshore sea-breeze will enhance, while the contrast between land and sea is even more striking due to the contribution of a distinct coastal upwelling. This implies that air-sea-land interaction dominates the process of local wind system modulation in response to transient CUEV. This result sheds a new light on the air-sea interaction process within the SCS basin.

Original language	English
Pages (from-to)	105-115
Number of pages	11
Journal	Dynamics of Atmospheres and Oceans
Volume	76
DOIs	https://doi.org/10.1016/j.dynatmoce.2016.10.002
Publication status	Published - 2016 Dec 1

Keywords

Air-sea-land interaction
Coastal upwelling
Sea-breeze
WRF model

ASJC Scopus subject areas

Oceanography
Geology
Computers in Earth Sciences
Atmospheric Science

Access to Document

10.1016/j.dynatmoce.2016.10.002

Cite this

@article{b52812ba1c3145dc8ac36fd5b553942c,

title = "Impacts of coastal upwelling off east Vietnam on the regional winds system: An air-sea-land interaction",

abstract = "In this study, we analyze the influence of coastal upwelling off southeast Vietnam (CUEV) on local wind field using numerical simulations based on atmospheric model of Weather Research and Forecasting (WRF). Several scenarios are simulated by forcing identical model configurations with different SST fields. Based on simulation results, the relationship between CUEV and reduction of wind forcing is numerically evidenced. With the influence of a typical cold patch with a temperature drop of 3–5 °C, the local wind speeds can drop to less than 70% of original level. We find that the mechanism of response of the wind reduction to CUEV is enhancement of sea-breeze induced wind modulation. Onshore sea-breeze will enhance, while the contrast between land and sea is even more striking due to the contribution of a distinct coastal upwelling. This implies that air-sea-land interaction dominates the process of local wind system modulation in response to transient CUEV. This result sheds a new light on the air-sea interaction process within the SCS basin.",

keywords = "Air-sea-land interaction, Coastal upwelling, Sea-breeze, WRF model",

author = "Zheng, {Zhe Wen} and Quanan Zheng and Kuo, {Yi Chun} and Ganesh Gopalakrishnan and Lee, {Chia Ying} and Ho, {Chung Ru} and Kuo, {Nan Jung} and Huang, {Shih Jen}",

note = "Publisher Copyright: {\textcopyright} 2016",

year = "2016",

month = dec,

day = "1",

doi = "10.1016/j.dynatmoce.2016.10.002",

language = "English",

volume = "76",

pages = "105--115",

journal = "Dynamics of Atmospheres and Oceans",

issn = "0377-0265",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Impacts of coastal upwelling off east Vietnam on the regional winds system

T2 - An air-sea-land interaction

AU - Zheng, Zhe Wen

AU - Zheng, Quanan

AU - Kuo, Yi Chun

AU - Gopalakrishnan, Ganesh

AU - Lee, Chia Ying

AU - Ho, Chung Ru

AU - Kuo, Nan Jung

AU - Huang, Shih Jen

PY - 2016/12/1

Y1 - 2016/12/1

N2 - In this study, we analyze the influence of coastal upwelling off southeast Vietnam (CUEV) on local wind field using numerical simulations based on atmospheric model of Weather Research and Forecasting (WRF). Several scenarios are simulated by forcing identical model configurations with different SST fields. Based on simulation results, the relationship between CUEV and reduction of wind forcing is numerically evidenced. With the influence of a typical cold patch with a temperature drop of 3–5 °C, the local wind speeds can drop to less than 70% of original level. We find that the mechanism of response of the wind reduction to CUEV is enhancement of sea-breeze induced wind modulation. Onshore sea-breeze will enhance, while the contrast between land and sea is even more striking due to the contribution of a distinct coastal upwelling. This implies that air-sea-land interaction dominates the process of local wind system modulation in response to transient CUEV. This result sheds a new light on the air-sea interaction process within the SCS basin.

AB - In this study, we analyze the influence of coastal upwelling off southeast Vietnam (CUEV) on local wind field using numerical simulations based on atmospheric model of Weather Research and Forecasting (WRF). Several scenarios are simulated by forcing identical model configurations with different SST fields. Based on simulation results, the relationship between CUEV and reduction of wind forcing is numerically evidenced. With the influence of a typical cold patch with a temperature drop of 3–5 °C, the local wind speeds can drop to less than 70% of original level. We find that the mechanism of response of the wind reduction to CUEV is enhancement of sea-breeze induced wind modulation. Onshore sea-breeze will enhance, while the contrast between land and sea is even more striking due to the contribution of a distinct coastal upwelling. This implies that air-sea-land interaction dominates the process of local wind system modulation in response to transient CUEV. This result sheds a new light on the air-sea interaction process within the SCS basin.

KW - Air-sea-land interaction

KW - Coastal upwelling

KW - Sea-breeze

KW - WRF model

UR - http://www.scopus.com/inward/record.url?scp=84991489964&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84991489964&partnerID=8YFLogxK

U2 - 10.1016/j.dynatmoce.2016.10.002

DO - 10.1016/j.dynatmoce.2016.10.002

M3 - Article

AN - SCOPUS:84991489964

SN - 0377-0265

VL - 76

SP - 105

EP - 115

JO - Dynamics of Atmospheres and Oceans

JF - Dynamics of Atmospheres and Oceans

ER -

Impacts of coastal upwelling off east Vietnam on the regional winds system: An air-sea-land interaction

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this