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Potential Associations between Low-Level Jets and Intraseasonal and Semi-Diurnal Variations in Coastal Chlorophyll-A over the Beibuwan Gulf, South China Sea
Liu, Shuhong1,2,3; Tang, Danling2,3; Yan, Hong4; Ning, Guicai5; Liu, Chengcheng4; Yang, Yuanjian1,2,3,4
Corresponding AuthorYang, Yuanjian(yyj1985@nuist.edu.cn)
2021-03-01
Source PublicationREMOTE SENSING
Volume13Issue:6Pages:19
AbstractLow-level jet (LLJ) significantly affects the synoptic-scale hydrometeorological conditions in the South China Sea, although the impact of LLJs on the marine ecological environment is still unclear. We used multi-satellite observation data and meteorological reanalysis datasets to study the potential impact of LLJs on the marine biophysical environment over the Beibuwan Gulf (BBG) in summer during 2015-2019. In terms of the summer average, the sea surface wind vectors on LLJ days became stronger in the southwesterly direction relative to those on non-LLJ days, resulting in enhanced Ekman pumping (the maximum upwelling exceeds 10 x 10(-6) m s(-1)) in most areas of the BBG, accompanied by stronger photosynthetically active radiation (increased by about 20 mu mol m(-2) s(-1)) and less precipitation (decreased by about 3 mm day(-1)). These LLJ-induced hydrometeorological changes led to an increase of about 0.3 degrees C in the nearshore sea surface temperature and an increase of 0.1-0.5 mg m(-3) (decrease of 0.1-0.3 mg m(-3)) in the chlorophyll-a (chl-a) concentrations in nearshore (offshore) regions. Intraseasonal and diurnal changes in the incidence and intensity of LLJs potentially resulted in changes in the biophysical ocean environment in nearshore regions on intraseasonal and semi-diurnal timescales. The semi-diurnal peak and amplitude of chl-a concentrations on LLJ days increased with respect to those on non-LLJ days. Relative to the southern BBG, LLJ events exhibit greater impacts on the northern BBG, causing increases of the semi-diurnal peak and amplitude with 1.5 mg m(-3) and 0.7 mg m(-3), respectively. This work provides scientific evidence for understanding the potential mechanism of synoptic-scale changes in the marine ecological environment in marginal seas with frequent LLJ days.
Keywordchlorophyll-a sea surface temperature low-level jets intraseasonal and semi-diurnal scales Beibuwan Gulf Himawari-8
DOI10.3390/rs13061194
WOS KeywordSURFACE TEMPERATURE ; PHYTOPLANKTON GROWTH ; MOISTURE TRANSPORT ; SEASONAL-VARIATION ; PRECIPITATION ; TYPHOON ; IMPACT ; WATER ; PRODUCTIVITY ; CLIMATOLOGY
Indexed BySCI ; SCI
Language英语
Funding ProjectNSFC-DFG[42061134009] ; Guangdong special support key group program[2019BT02H594] ; Key Special Project of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) for Introduced Talents Team[GML2019ZD0602] ; Guangdong Key Laboratory of Ocean Remote Sensing[2017B030301005-LORS2001] ; Guangdong Key Laboratory of Ocean Remote Sensing[2017B030301005] ; Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences[ISEE2019ZR02] ; State Key Laboratory of Loess and Quaternary Geology[SKLLQG2010]
WOS Research AreaEnvironmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
Funding OrganizationNSFC-DFG ; Guangdong special support key group program ; Key Special Project of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) for Introduced Talents Team ; Guangdong Key Laboratory of Ocean Remote Sensing ; Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences ; State Key Laboratory of Loess and Quaternary Geology
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS IDWOS:000651970200001
PublisherMDPI
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/16498
Collection古环境研究室
Corresponding AuthorYang, Yuanjian
Affiliation1.Nanjing Univ Informat Sci & Technol, Sch Atmospher Phys, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing 210044, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511458, Peoples R China
3.Chinese Acad Sci, South China Sea Inst Oceanol, Guangdong Key Lab Ocean Remote Sensing, Guangzhou 511458, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
5.Chinese Univ Hong Kong, Inst Environm Energy & Sustainabil, Hong Kong 999077, Peoples R China
Recommended Citation
GB/T 7714
Liu, Shuhong,Tang, Danling,Yan, Hong,et al. Potential Associations between Low-Level Jets and Intraseasonal and Semi-Diurnal Variations in Coastal Chlorophyll-A over the Beibuwan Gulf, South China Sea[J]. REMOTE SENSING,2021,13(6):19.
APA Liu, Shuhong,Tang, Danling,Yan, Hong,Ning, Guicai,Liu, Chengcheng,&Yang, Yuanjian.(2021).Potential Associations between Low-Level Jets and Intraseasonal and Semi-Diurnal Variations in Coastal Chlorophyll-A over the Beibuwan Gulf, South China Sea.REMOTE SENSING,13(6),19.
MLA Liu, Shuhong,et al."Potential Associations between Low-Level Jets and Intraseasonal and Semi-Diurnal Variations in Coastal Chlorophyll-A over the Beibuwan Gulf, South China Sea".REMOTE SENSING 13.6(2021):19.
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