{"title":"纬度和云量对人类出生季节性的影响。","authors":"David R Cummings","doi":"10.1080/19485565.2003.9989063","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>A previous study (Cummings, 2002), hypothesized that human birth seasonality was primarily related to environmental light intensity/photoperiod.</p><p><strong>Purpose: </strong>There are two primary goals: to explain seasonality differences between U.S., Canada, and Europe and to test the influence of environmental light intensity/photoperiod at divergent latitudes.</p><p><strong>Methodology: </strong>Existing seasonality data were extracted from previous studies at various locations throughout the world. Daily cloud cover amounts (clearness) were utilized as indices for environmental light intensity.</p><p><strong>Discussion: </strong>Results were evaluated and discussed for each sub-study.</p><p><strong>Conclusion: </strong>Sub-study results support the hypothesis that human birth seasonality may be influenced by environmental light intensity and photoperiod. This conclusion is supported by logical links between increased light intensity/photoperiod and conceptions at different latitudes. Irrefutable proof may involve correlating long term changes in cloud cover with long term changes in human birth seasonality.</p>","PeriodicalId":76544,"journal":{"name":"Social biology","volume":"50 1-2","pages":"23-41"},"PeriodicalIF":0.0000,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/19485565.2003.9989063","citationCount":"10","resultStr":"{\"title\":\"The influence of latitude and cloud cover on the seasonality of human births.\",\"authors\":\"David R Cummings\",\"doi\":\"10.1080/19485565.2003.9989063\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>A previous study (Cummings, 2002), hypothesized that human birth seasonality was primarily related to environmental light intensity/photoperiod.</p><p><strong>Purpose: </strong>There are two primary goals: to explain seasonality differences between U.S., Canada, and Europe and to test the influence of environmental light intensity/photoperiod at divergent latitudes.</p><p><strong>Methodology: </strong>Existing seasonality data were extracted from previous studies at various locations throughout the world. Daily cloud cover amounts (clearness) were utilized as indices for environmental light intensity.</p><p><strong>Discussion: </strong>Results were evaluated and discussed for each sub-study.</p><p><strong>Conclusion: </strong>Sub-study results support the hypothesis that human birth seasonality may be influenced by environmental light intensity and photoperiod. This conclusion is supported by logical links between increased light intensity/photoperiod and conceptions at different latitudes. Irrefutable proof may involve correlating long term changes in cloud cover with long term changes in human birth seasonality.</p>\",\"PeriodicalId\":76544,\"journal\":{\"name\":\"Social biology\",\"volume\":\"50 1-2\",\"pages\":\"23-41\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2003-02-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1080/19485565.2003.9989063\",\"citationCount\":\"10\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Social biology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/19485565.2003.9989063\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Social biology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/19485565.2003.9989063","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The influence of latitude and cloud cover on the seasonality of human births.
Background: A previous study (Cummings, 2002), hypothesized that human birth seasonality was primarily related to environmental light intensity/photoperiod.
Purpose: There are two primary goals: to explain seasonality differences between U.S., Canada, and Europe and to test the influence of environmental light intensity/photoperiod at divergent latitudes.
Methodology: Existing seasonality data were extracted from previous studies at various locations throughout the world. Daily cloud cover amounts (clearness) were utilized as indices for environmental light intensity.
Discussion: Results were evaluated and discussed for each sub-study.
Conclusion: Sub-study results support the hypothesis that human birth seasonality may be influenced by environmental light intensity and photoperiod. This conclusion is supported by logical links between increased light intensity/photoperiod and conceptions at different latitudes. Irrefutable proof may involve correlating long term changes in cloud cover with long term changes in human birth seasonality.
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