气候变化领域集成服务门户(CCPortal): Halogen deposition in polar snow and ice

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.833942
	Halogen deposition in polar snow and ice
	Spolaor; Andrea; Vallelonga; Paul T; Gabrieli; Jacopo; Martma; Tõnu; Björkman; M P; Isaksson; Elisabeth; Cozzi; Giulio; Turetta; Clara; Kjær; Helle Astrid; Curran; Mark A J; Moy; Andrew D; Schönhardt; Anja; Blechschmidt; Anne-Marlene; Burrows; John Philip; Plane; J M C; Barbante; Carlo
发布日期	2014-07-10
数据集类型	dataset
英文简介	The atmospheric chemistry of iodine and bromine in polar regions is of interest due to the key role of halogens in many atmospheric processes, particularly tropospheric ozone destruction. Bromine is emitted from the open ocean but is enriched above first-year sea ice during springtime bromine explosion events, whereas iodine is emitted from biological communities hosted by sea ice. It has been previously demonstrated that bromine and iodine are present in Antarctic ice over glacial-interglacial cycles. Here we investigate seasonal variability of bromine and iodine in polar snow and ice, to evaluate their emission, transport and deposition in Antarctica and the Arctic and better understand potential links to sea ice. We find that bromine enrichment (relative to sea salt content) and iodine concentrations in polar ice do vary seasonally in Arctic snow and Antarctic ice and we relate such variability to satellite-based observations of tropospheric halogen concentrations. Peaks of bromine enrichment in Arctic snow and Antarctic ice occur in spring and summer, when sunlight is present. Iodine concentrations are largest in winter Antarctic ice strata, contrary to contemporary observations of summer maxima in iodine emissions.
空间范围	Median Latitude: 29.933333 * Median Longitude: 25.022100 * South-bound Latitude: -66.766700 * West-bound Longitude: -51.116700 * North-bound Latitude: 79.150000 * East-bound Longitude: 112.800000
时间范围	2012-07-01T00:00:00 - 2013-01-01T00:00:00
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/233544
推荐引用方式 GB/T 7714	Spolaor,Andrea,Vallelonga,et al. Halogen deposition in polar snow and ice.2014-07-10.https://doi.org/10.1594/PANGAEA.833942.