首页|Observation of Low-Level Jets in the Eastern Tropical Indian Ocean Based on Shipborne Coherent Doppler Lidar

Observation of Low-Level Jets in the Eastern Tropical Indian Ocean Based on Shipborne Coherent Doppler Lidar

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  • NETL
  • NSTL
  • 万方数据
In contrast to the Pacific and Atlantic Oceans,the Indian Ocean has lacked in-situ observations of wind profiles over open sea areas for decades.In 2021,a shipborne coherent Doppler lidar(CDL)was used to observe in-situ wind profiles in the eastern tropical Indian Ocean.This equipment successfully captured low-level jets(LLJs)in the region,and their characteristics were thor-oughly analyzed.Results reveal that the observed wind speed of LLJs in the eastern Indian Ocean ranges from 6ms-1 to 10ms-1 during the boreal winter and spring seasons,showing a height range of 0.6 to 1 km and two peak times at 0800 and 2000 UTC.This wind shear is weaker than that in land or offshore areas,ranging from 0 s-1 to 0.006 s-1.Moreover,the accuracy of the CDL data is compared to that of ERA5 data in the study area.The results indicate that the zonal wind from ERA5 data significantly deviated from the CDL measurement data,and the overall ERA5 data are substantially weaker than the in-situ observations.Notably,ERA5 under-estimates northwestward LLJs.

low-level jetscoherent Doppler lidarERA5radiosondeeastern Indian Ocean

WANG Haiyuan、LIU Lin、FAN Mengqi、YANG Yang、YANG Guang、DUAN Yongliang、LIU Baochao、SU Qinglei、ZHANG Binbin、WANG Fengjun、SHI Xuliang、LI Qiuchi、ZENG Ai

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First Institute of Oceanography,Ministry of Natural Resources and Laboratory for Regional Oceanography and Numerical Modeling,Qingdao Marine Science and Technology Center,Qingdao 266061,China

Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519082,China

Key Laboratory of Marine Science and Numerical Modeling,Ministry of Natural Resources,Qingdao 266061,China

Qingdao Leice Transient Technology Co.,Ltd.,Qingdao 266100,China

Qingdao Innovation and Development Base of Harbin Engineering University,Qingdao 266404,China

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Taishan Scholars Programs of Shandong ProvinceGlobal Change and Air-Sea Interaction ProgramGlobal Change and Air-Sea Interaction ProgramNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

tsqn201909165GASI-04-QYQH-03GASI-01-WIND-STwin4187602842349910

2024

10.1007/s11802-024-5837-0

中国海洋大学学报(自然科学英文版)
中国海洋大学

中国海洋大学学报(自然科学英文版)

CSTPCD
影响因子：0.268
ISSN：1672-5182
年,卷(期)：2024.23(5)