{"title":"塔斯曼海的高叶绿素和低叶绿素事件,它们与海洋热浪、寒冷期和全球遥相关的联系","authors":"S. Chiswell","doi":"10.1080/00288330.2022.2076702","DOIUrl":null,"url":null,"abstract":"ABSTRACT Previous work has suggested that marine heat waves (MHW) and cool spells (MCS) in the Tasman Sea are responses to a stalling of an eastward propagating austral wavenumber-4 atmospheric pressure wave. We investigate extrema in sea surface chlorophyll (SSC), defining high- and low-chlorophyll events (HCE and LCE) analogous to MHW and MCS, but using Tasman-Sea averaged SSC anomalies. From 2002 to 2020, there were 13 HCE and 10 LCE, with no indication of changes in frequency, duration, or intensity of events. HCE tend to occur when Tasman-Sea averaged sea surface temperature is anomalously cool, and LCE tend to occur when Tasman-Sea averaged surface temperature is anomalously warm, however, there is no direct relationship between temperature and chlorophyll extrema. Canonical HCE/LCE formed from the 2002 to 2020 events suggest that HCE/LCE are also driven by the austral wavenumber-4 atmospheric wave. HCE occur during periods of low wind stress after a period of increased wind stress, whereas LCE may be a result of strong vertical mixing that mixes surface phytoplankton downwards. The implications of this work are that changes in Tasman Sea primary production in a future ocean will depend on any changes in the wavenumber-4 atmospheric wave.","PeriodicalId":54720,"journal":{"name":"New Zealand Journal of Marine and Freshwater Research","volume":"57 1","pages":"550 - 567"},"PeriodicalIF":1.4000,"publicationDate":"2022-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Tasman Sea high- and low- chlorophyll events, their links to marine heat waves, cool spells, and global teleconnections\",\"authors\":\"S. Chiswell\",\"doi\":\"10.1080/00288330.2022.2076702\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"ABSTRACT Previous work has suggested that marine heat waves (MHW) and cool spells (MCS) in the Tasman Sea are responses to a stalling of an eastward propagating austral wavenumber-4 atmospheric pressure wave. We investigate extrema in sea surface chlorophyll (SSC), defining high- and low-chlorophyll events (HCE and LCE) analogous to MHW and MCS, but using Tasman-Sea averaged SSC anomalies. From 2002 to 2020, there were 13 HCE and 10 LCE, with no indication of changes in frequency, duration, or intensity of events. HCE tend to occur when Tasman-Sea averaged sea surface temperature is anomalously cool, and LCE tend to occur when Tasman-Sea averaged surface temperature is anomalously warm, however, there is no direct relationship between temperature and chlorophyll extrema. Canonical HCE/LCE formed from the 2002 to 2020 events suggest that HCE/LCE are also driven by the austral wavenumber-4 atmospheric wave. HCE occur during periods of low wind stress after a period of increased wind stress, whereas LCE may be a result of strong vertical mixing that mixes surface phytoplankton downwards. The implications of this work are that changes in Tasman Sea primary production in a future ocean will depend on any changes in the wavenumber-4 atmospheric wave.\",\"PeriodicalId\":54720,\"journal\":{\"name\":\"New Zealand Journal of Marine and Freshwater Research\",\"volume\":\"57 1\",\"pages\":\"550 - 567\"},\"PeriodicalIF\":1.4000,\"publicationDate\":\"2022-05-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"New Zealand Journal of Marine and Freshwater Research\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://doi.org/10.1080/00288330.2022.2076702\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"FISHERIES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"New Zealand Journal of Marine and Freshwater Research","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1080/00288330.2022.2076702","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"FISHERIES","Score":null,"Total":0}
Tasman Sea high- and low- chlorophyll events, their links to marine heat waves, cool spells, and global teleconnections
ABSTRACT Previous work has suggested that marine heat waves (MHW) and cool spells (MCS) in the Tasman Sea are responses to a stalling of an eastward propagating austral wavenumber-4 atmospheric pressure wave. We investigate extrema in sea surface chlorophyll (SSC), defining high- and low-chlorophyll events (HCE and LCE) analogous to MHW and MCS, but using Tasman-Sea averaged SSC anomalies. From 2002 to 2020, there were 13 HCE and 10 LCE, with no indication of changes in frequency, duration, or intensity of events. HCE tend to occur when Tasman-Sea averaged sea surface temperature is anomalously cool, and LCE tend to occur when Tasman-Sea averaged surface temperature is anomalously warm, however, there is no direct relationship between temperature and chlorophyll extrema. Canonical HCE/LCE formed from the 2002 to 2020 events suggest that HCE/LCE are also driven by the austral wavenumber-4 atmospheric wave. HCE occur during periods of low wind stress after a period of increased wind stress, whereas LCE may be a result of strong vertical mixing that mixes surface phytoplankton downwards. The implications of this work are that changes in Tasman Sea primary production in a future ocean will depend on any changes in the wavenumber-4 atmospheric wave.
期刊介绍:
Aims: The diversity of aquatic environments in the southern continents and oceans is of worldwide interest to researchers and resource managers in research institutions, museums, and other centres. The New Zealand Journal of Marine and Freshwater Research plays an important role in disseminating information on observational, experimental, theoretical and numerical research on the marine, estuarine and freshwater environments of the region.