文献类型：期刊文献

英文题名：Relationship between subsurface diurnal warming and wind speed

作者：Yan, Yunwei[1,2];Wang, Guihua[3,4,5];Wang, Xiao Hua[6];Chen, Changlin[3,4,5];Ling, Zheng[7];Zhang, Lei[8]

机构：[1]Hohai Univ, Key Lab Marine Hazards Forecasting, Minist Nat Resources, Nanjing, Peoples R China;[2]Hohai Univ, Coll Oceanog, Nanjing, Peoples R China;[3]Fudan Univ, Dept Atmospher & Ocean Sci, Shanghai, Peoples R China;[4]Fudan Univ, Inst Atmospher Sci, Shanghai, Peoples R China;[5]Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China;[6]Univ New South Wales, Sch Phys Environm & Math Sci, Sino Australian Res Consortium Coastal Management, Kensington, Australia;[7]Guangdong Ocean Univ, Coll Ocean & Meteorol, Resources & Environm Continental Shelf Sea & Deep, Key Lab Climate, Zhanjiang, Peoples R China;[8]South China Sea Inst Oceanol, Chinese Acad Sci, State Key Lab Trop Oceanog, Guangzhou, Peoples R China

年份：2023

卷号：199

外文期刊名：DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS

收录：SCI-EXPANDED(收录号：WOS:001054630900001)、、EI(收录号：20232814381552)、Scopus(收录号：2-s2.0-85164211851)、WOS

基金：This work was supported by the National Natural Science Foundation of China [grant numbers 41976028 and 41,976,003] , and State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences (Project No. LTO2322) . L.Z. is supported by the development fund of South China Sea Institute of Oceanology of the Chinese Academy of Sciences SCSIO202203. The TAO/TRITON observations are available at https:// www.pmel.noaa. gov/tao/drupal/disdel/. The buoy data at (61.5?E, 15.5?N) are available at https://uop.whoi.edu/projects/arabiansea/arabiansea.html.r Oceanology, Chinese Academy of Sciences (Project No. LTO2322) . L.Z. is supported by the development fund of South China Sea Institute of Oceanology of the Chinese Academy of Sciences SCSIO202203. The TAO/TRITON observations are available at https:// www.pmel.noaa. gov/tao/drupal/disdel/. The buoy data at (61.5?E, 15.5?N) are avail-able at https://uop.whoi.edu/projects/arabiansea/arabiansea.html.

语种：英文

外文关键词：Diurnal temperature variability; Subsurface diurnal warming; Daily maximum temperature; Wind speed

外文摘要：Observations and numerical simulations show an inverse relationship between sea surface diurnal warming and wind speed. However, the dependence of subsurface diurnal warming on wind speed remains largely unexplored. Here, we investigate the relationship between subsurface diurnal warming and wind speed using field obser-vations, numerical simulations, and theoretical analysis. With increasing wind speed, subsurface diurnal warming decreases at the shallower depths where the daily maximum temperature occurs in the afternoon, while it first increases and then decreases at the deeper depths where the daily maximum temperature moves from afternoon to night, reaching a maximum when the daily maximum temperature occurs at about 18:00 local time (sunset). The relationship is mainly governed by the time-accumulated ocean heat gain from the air-sea heat flux (the difference between time-accumulated shortwave absorption and time-accumulated surface heat loss), which represents the downward heat transfer. Increasing wind speed increases surface heat loss and decreases the timing of the daily maximum temperature (t2h). For the shallower depths, both the decreased t2h and the increased surface heat loss reduce the accumulated ocean heat gain from the air-sea heat flux, i.e., the downward heat transfer, and thus reduce subsurface diurnal warming. For the deeper depths, the decreased t2h with increasing wind speed initially reduces the accumulated surface heat loss (the accumulated shortwave absorption almost the same) when t2h is during the night, causing the increase in subsurface diurnal warming, and subsequently reduces the accumulated net ocean heat gain along with the increased surface heat loss when t2h is during the afternoon, leading to the decrease in subsurface diurnal warming. This study extends our understanding of the dependence of diurnal warming on wind speed.