NDLI: A winter monsoon front over the South China Sea studied by multi-sensor satellite data, weather radar data, and a numerical model

Content Provider	IEEE Xplore Digital Library
Author	Alpers, W. Dagestad, K.-F. Wai Kin Wong Pak Wai Chan
Copyright Year	2012
Description	Author affiliation: Institute of Oceanography, University of Hamburg, Germany (Alpers, W.) \|\| Hong Kong Observatory, Hong Kong (Wai Kin Wong; Pak Wai Chan) \|\| Nansen Environmental and Remote Sensing Center (NERSC), Bergen, Norway (Dagestad, K.-F.)
Abstract	An atmospheric frontal system over the South China Sea (SCS) arising from the replenishment of the northeast monsoon is investigated by using multi-sensor satellite data, weather radar data, and a numerical model. The replenishment or freshening of the northeast monsoon results from the merging of two high pressure areas over the Chinese Continent. The near-sea surface wind field associated with this event was measured by the Advanced Scatterometer (ASCAT) onboard the European MetOp satellite and the Advanced Synthetic Aperture Radar (ASAR) onboard the European Envisat satellite. The high resolution ASAR image reveals that the frontal line separating this wind field from the synoptic-scale ambient wind field is as sharp as in the case of a cold air outbreak and contains embedded rain cells. Furthermore, it shows that this replenishment was associated with northeasterly winds with speeds of up to 13 $ms^{−1}$ over the SCS at offshore distances larger than 60 km, but only with speeds of around 6 $ms^{−1}$ near the coast. The comparison of the observational data with model results of the pre-operational version of the AIR (Atmospheric Integrated Rapid-cycle) forecast model of the Hong Kong Observatory shows that the AIR model can successfully simulate the time evolution of the frontal system and the wind field over the open ocean, but fails to simulate the wind field near the coast.
Starting Page	2070
Ending Page	2073
File Size	843909
Page Count	4
File Format	PDF
ISBN	9781467311601
ISSN	21536996
e-ISBN	9781467311595
e-ISBN	9781467311588
DOI	10.1109/IGARSS.2012.6350965
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-22
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Atmospheric modeling Wind speed Radar Sea measurements Satellites Rain Synthetic aperture radar Winter Monsoon South China Sea Sea surface winds Atmospheric front
Content Type	Text
Resource Type	Article

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