{"refrec":{"BRefID":353576,"RR":"<b>Zhou, J.; Li, X.; Wang, W.; Chen, X.</b> (2021). Analysis of environmental controls on the quasi-ocean and ocean CO<sub>2</sub> concentration by two intelligent algorithms. <i>Mathematical Problems in Engineering 2021</i>: 6666139. <a href=\"https://dx.doi.org/10.1155/2021/6666139\" target=\"_blank\">https://dx.doi.org/10.1155/2021/6666139</a>","BEntID":351286,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Mathematical Problems in Engineering 2021</i>: 6666139. <a href=\"https://dx.doi.org/10.1155/2021/6666139\" target=\"_blank\">https://dx.doi.org/10.1155/2021/6666139</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Zhou, J.; Li, X.; Wang, W.; Chen, X.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Zhou, J. <i>et al.</i>","Englishabstract":"Previous studies have demonstrated CO<sub>2</sub> absorption by soils in arid regions, where the absorbed CO<sub>2</sub> is conjectured to be finally sequestrated in the “subterranean ocean”—groundwater. This study compares environmental controls of ocean CO<sub>2</sub> concentration (surface ocean pCO<sub>2</sub>) and quasi-ocean CO<sub>2</sub> concentration (deep-soil pCO<sub>2</sub>). We aim to explore the latent relationship, both linear and nonlinear between the environmental variables, and CO<sub>2</sub> concentration, utilizing two intelligent algorithms—the partial least linear regression (PLSR) algorithm and the artificial neural network (ANN) algorithm. For quasi-ocean CO<sub>2</sub> concentration, RPD &lt;1.4 and <i>R</i><sup>2</sup> &lt;40%. While for ocean CO<sub>2</sub> concentration, RPD &gt;1.4 and <i>R</i><sup>2</sup> is 99.7%. Linear relationships between the considered environmental controls and ocean CO<sub>2</sub> concentration are proved; however, there is no evident relationship between most of the considered environmental controls and quasi-ocean CO<sub>2</sub> concentration. Groundwater level is proved to be a relatively important environmental control on the quasi-ocean CO<sub>2</sub> concentration, suggesting groundwater discharge/recharge as a significant modulator of soil CO<sub>2</sub> absorption in arid regions.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Analysis of environmental controls on the quasi-ocean and ocean CO<sub>2</sub> concentration by two intelligent algorithms","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:32:52.928458","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2021,"MonPub":null,"DateUpdate":"2022-07-12","DateCreate":"2022-07-08","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000668996200008","VABBcode":null,"OpenAcc":1,"DOI":"10.1155/2021/6666139"},"refs":null,"anarec":{"AnaID":353576,"PubliDate":2021,"Pagination":"6666139","XtraPublOfAnaID":null,"ISBN":null,"Volume":"2021","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":274421,"SerRR":"Mathematical Problems in Engineering. 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