气候变化领域集成服务门户(CCPortal): Physical oceanography from the northwestern Weddell Sea

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.761004
	Physical oceanography from the northwestern Weddell Sea
	Hellmer; Hartmut H; Huhn; Oliver; Gomis; Damià; Timmermann; Ralph
发布日期	2011-05-23
数据集类型	dataset
英文简介	We analyzed hydrographic data from the northwestern Weddell Sea continental shelf of the three austral winters 1989, 1997, and 2006 and two summers following the last winter cruise. During summer a thermal front exists at ~64° S separating cold southern waters from warm northern waters that have similar characteristics as the deep waters of the central basin of the Bransfield Strait. In winter, the whole continental shelf exhibits southern characteristics with high Neon (Ne) concentrations, indicating a significant input of glacial melt water. The comparison of the winter data from the shallow shelf off the tip of the Antarctic Peninsula, spanning a period of 17 yr, shows a salinity decrease of 0.09 for the whole water column, which has a residence time of <1 yr. We interpret this freshening as being caused by a combination of reduced salt input due to a southward sea ice retreat and higher precipitation during the late 20th century on the western Weddell Sea continental shelf. However, less salinification might also result from a delicate interplay between enhanced salt input due to sea ice formation in coastal areas formerly occupied by Larsen A and B ice shelves and increased Larsen C ice loss.
空间范围	Median Latitude: -58.607187 * Median Longitude: -22.293824 * South-bound Latitude: -71.115000 * West-bound Longitude: -66.282000 * North-bound Latitude: -37.016600 * East-bound Longitude: 38.996800
时间范围	1989-09-10T07:28:00 - 2009-02-26T21:59:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/226930
推荐引用方式 GB/T 7714	Hellmer,Hartmut H,Huhn,et al. Physical oceanography from the northwestern Weddell Sea.2011-05-23.https://doi.org/10.1594/PANGAEA.761004.