Climate Change Data Portal
| DOI | 10.5194/tc-15-1307-2021 |
| Combined influence of oceanic and atmospheric circulations on Greenland sea ice concentration | |
| Chatterjee S.; Raj R.P.; Bertino L.; Mernild S.H.; Puthukkottu Subeesh M.; Murukesh N.; Ravichandran M. | |
| 发表日期 | 2021 |
| ISSN | 19940416 |
| 起始页码 | 1307 |
| 结束页码 | 1319 |
| 卷号 | 15期号:3 |
| 英文摘要 | The amount and spatial extent of Greenland Sea (GS) ice are primarily controlled by the sea ice export across the Fram Strait (FS) and by local seasonal sea ice formation, melting, and sea ice dynamics. In this study, using satellite passive microwave sea ice observations, atmospheric and a coupled ocean-sea ice reanalysis system, TOPAZ4, we show that both the atmospheric and oceanic circulation in the Nordic Seas (NS) act in tandem to explain the SIC variability in the south-western GS. Northerly wind anomalies associated with anomalously low sea level pressure (SLP) over the NS reduce the sea ice export in the south-western GS due to westward Ekman drift of sea ice. On the other hand, the positive wind stress curl strengthens the cyclonic Greenland Sea Gyre (GSG) circulation in the central GS. An intensified GSG circulation may result in stronger Ekman divergence of surface cold and fresh waters away from the south-western GS. Both of these processes can reduce the freshwater content and weaken the upper-ocean stratification in the south-western GS. At the same time, warm and saline Atlantic Water (AW) anomalies are recirculated from the FS region to the south-western GS by a stronger GSG circulation. Under weakly stratified conditions, enhanced vertical mixing of these subsurface AW anomalies can warm the surface waters and inhibit new sea ice formation, further reducing the SIC in the south-western GS. © Author(s) 2021. |
| 英文关键词 | atmosphere-ocean system; circulation; concentration (composition); Ekman transport; gyre; North Atlantic Deep Water; Northern Oscillation; oceanic circulation; satellite altimetry; sea ice; sea level pressure; stratification; upper ocean; vertical mixing; wind stress; Arctic; Arctic Ocean; Fram Strait; Greenland Sea; Norwegian Sea; Norwegian Sea |
| 语种 | 英语 |
| 来源期刊 | Cryosphere
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/202288 |
| 作者单位 | National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Goa, India; School of Earth, Ocean and Atmospheric Sciences, Goa University, Goa, India; Nansen Environmental and Remote Sensing Center, Bjerknes Centre for Climate Research, Bergen, Norway; The Vice-Chancellor's Office, University of Southern Denmark, Odense, Denmark; Geophysical Institute, University of Bergen, Bergen, Norway; Direction of Antarctic and Sub-Antarctic Programs, Universidad de Magallanes, Punta Arenas, Chile |
| 推荐引用方式 GB/T 7714 | Chatterjee S.,Raj R.P.,Bertino L.,et al. Combined influence of oceanic and atmospheric circulations on Greenland sea ice concentration[J],2021,15(3). |
| APA | Chatterjee S..,Raj R.P..,Bertino L..,Mernild S.H..,Puthukkottu Subeesh M..,...&Ravichandran M..(2021).Combined influence of oceanic and atmospheric circulations on Greenland sea ice concentration.Cryosphere,15(3). |
| MLA | Chatterjee S.,et al."Combined influence of oceanic and atmospheric circulations on Greenland sea ice concentration".Cryosphere 15.3(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
