{"title":"新的初冬CO2数据显示威德尔海持续吸收CO2","authors":"M. Stoll, H. Baar, M. Hoppema, E. Fahrbach","doi":"10.1034/J.1600-0889.1999.T01-2-00008.X","DOIUrl":null,"url":null,"abstract":"The Antarctic Ocean has been thought to be unimportant for the uptake of CO 2 since upwelling of CO 2 -enriched deep waters would favour outgassing. Here we present the first direct f CO2 measurements obtained in early winter under the ice which, combined with estimated entrainment rates, show that the Weddell Sea, an area of intense upwelling manifested by the doming structure of the cyclonic gyre, has the capability to be almost continuously a sink for atmospheric CO 2 . A flux, effective after the ice cover disappears, is estimated to be – 0.74 + 0.7 mmol/m −2 d −1 . Combined with a flux estimate in late autumn (− 2.0 mmol/m 2 d −1 ) integrated over the area of the central Weddell Gyre, a carbon uptake of 0.24 × 10 13 gC y −1 (≈ 2.4 × 10 −3 GtC y −1 being ≈ 1‰ of global uptake) is computed, which is about a third of the strength of the biological pump of the Weddell Sea. DOI: 10.1034/j.1600-0889.1999.t01-2-00008.x","PeriodicalId":54432,"journal":{"name":"Tellus Series B-Chemical and Physical Meteorology","volume":"53 1","pages":"679-687"},"PeriodicalIF":2.3000,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"20","resultStr":"{\"title\":\"New early winter fCO2 data reveal continuous uptake of CO2 by the Weddell Sea\",\"authors\":\"M. Stoll, H. Baar, M. Hoppema, E. Fahrbach\",\"doi\":\"10.1034/J.1600-0889.1999.T01-2-00008.X\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The Antarctic Ocean has been thought to be unimportant for the uptake of CO 2 since upwelling of CO 2 -enriched deep waters would favour outgassing. Here we present the first direct f CO2 measurements obtained in early winter under the ice which, combined with estimated entrainment rates, show that the Weddell Sea, an area of intense upwelling manifested by the doming structure of the cyclonic gyre, has the capability to be almost continuously a sink for atmospheric CO 2 . A flux, effective after the ice cover disappears, is estimated to be – 0.74 + 0.7 mmol/m −2 d −1 . Combined with a flux estimate in late autumn (− 2.0 mmol/m 2 d −1 ) integrated over the area of the central Weddell Gyre, a carbon uptake of 0.24 × 10 13 gC y −1 (≈ 2.4 × 10 −3 GtC y −1 being ≈ 1‰ of global uptake) is computed, which is about a third of the strength of the biological pump of the Weddell Sea. DOI: 10.1034/j.1600-0889.1999.t01-2-00008.x\",\"PeriodicalId\":54432,\"journal\":{\"name\":\"Tellus Series B-Chemical and Physical Meteorology\",\"volume\":\"53 1\",\"pages\":\"679-687\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"1999-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"20\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Tellus Series B-Chemical and Physical Meteorology\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://doi.org/10.1034/J.1600-0889.1999.T01-2-00008.X\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"METEOROLOGY & ATMOSPHERIC SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tellus Series B-Chemical and Physical Meteorology","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1034/J.1600-0889.1999.T01-2-00008.X","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"METEOROLOGY & ATMOSPHERIC SCIENCES","Score":null,"Total":0}
New early winter fCO2 data reveal continuous uptake of CO2 by the Weddell Sea
The Antarctic Ocean has been thought to be unimportant for the uptake of CO 2 since upwelling of CO 2 -enriched deep waters would favour outgassing. Here we present the first direct f CO2 measurements obtained in early winter under the ice which, combined with estimated entrainment rates, show that the Weddell Sea, an area of intense upwelling manifested by the doming structure of the cyclonic gyre, has the capability to be almost continuously a sink for atmospheric CO 2 . A flux, effective after the ice cover disappears, is estimated to be – 0.74 + 0.7 mmol/m −2 d −1 . Combined with a flux estimate in late autumn (− 2.0 mmol/m 2 d −1 ) integrated over the area of the central Weddell Gyre, a carbon uptake of 0.24 × 10 13 gC y −1 (≈ 2.4 × 10 −3 GtC y −1 being ≈ 1‰ of global uptake) is computed, which is about a third of the strength of the biological pump of the Weddell Sea. DOI: 10.1034/j.1600-0889.1999.t01-2-00008.x
期刊介绍:
Tellus B: Chemical and Physical Meteorology along with its sister journal Tellus A: Dynamic Meteorology and Oceanography, are the international, peer-reviewed journals of the International Meteorological Institute in Stockholm, an independent non-for-profit body integrated into the Department of Meteorology at the Faculty of Sciences of Stockholm University, Sweden. Aiming to promote the exchange of knowledge about meteorology from across a range of scientific sub-disciplines, the two journals serve an international community of researchers, policy makers, managers, media and the general public.