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| 1 | Crucial physical characteristics of sea ice in the Arctic section of 143°–180°W during August and early September 2008显示文摘Sea-ice physical characteristics were investigated in the Arctic section of 143°-180°W during August and early September 2008. Ship-based observations show that both the sea-ice thickness and concentration recorded during southward navigation from 30 August to 6 September were remarkably less than those recorded during northward navigation from 3 to 30 August, especially at low latitudes. Accordingly, the marginal ice zone moved from about 74.0°N to about 79.5°N from mid-August to early September. Melt-pond coverage increased with increasing latitude, peaking at 84.4°N, where about 27% of ice was covered by melt ponds. Above this latitude, melt-pond coverage decreased evidently as the ice at high latitudes experienced a relatively short melt season and commenced its growth stage by the end of August. Regional mean ice thickness increased from 0.8 (±0.5) m at 75.0°N to 1.5 (±0.4) m at 85.0°N along the northward navigation while it decreased rapidly to 0.6 (±0.3) m at 78.0°N along the southward navigation. Because of relatively low ice concentration and thin ice in the investigated Arctic sector, both the short-term ice stations and ice camp could only be set up over multiyear sea ice. Observations of ice properties based on ice cores collected at the short-term ice stations and the ice camp show that all investigated floes were essentially isothermal with high temperature and porosity, and low density and salinity. Most ices had salinity below 2 and mean density of 800-860 kg/m^3 . Significant ice loss in the investigated Arctic sector during the last 15 a can be identified by comparison with the previous observations. | LEI Ruibo LI Zhijun LI Na LU Peng CHENG Bin | 2012 | Acta Oceanologica Sinica2012，31，4： | 9 |
| 2 | 实测冰-水侧向界面热力学融化速率显示文摘在融冰期的乌梁素海人工挖凿开敞水域以模拟浮冰-水道系统,连续观测冰-水侧向界面的热力学侧向融化。根据实测数据,分析冰-水侧向界面的形状变化和影响融化速率的因素。结果显示,冰-水侧面中部形状近似直线,下部呈圆弧状,上部受气温影响向内或向外倾斜。气温是影响融化速率的主要因素,平均气温越高,融化速率越大。风速越大融化速率越低,既表现在高风速与低气温往往同时出现,又表现在风速加速了水体蒸发而降低水温。风拖曳表层水体运动,加速迎风侧水体的热量对流,降低水温,降低融化速率;通过二元回归分析建立融化速率、气温和风速之间的关系的相关关系。 | 王庆凯 李志军 曹晓卫 闫利辉 | 2016 | 南水北调与水利科技2016，14，6： | 8 |
| 3 | Advancing the understanding of variations of Arctic sea ice optical and thermal behaviors through an international research and mobility project显示文摘In recent decades, significant changes of Arctic sea ice have taken place. These changes are expected to influence the surface energy balance of the ice-covered Arctic Ocean. To quantify this energy balance and to increase our understanding of mechanisms leading to observed changes in the Arctic sea ice, the project 'Advancing Modelling and Observing solar Radiation of Arctic sea ice—understanding changes and processes(AMORA)' was initiated and conducted from 2009 to 2013. AMORA was funded and organized under a frame of Norway-China bilateral collaboration program with partners from Finland, Germany, and the USA. The primary goal of the project was achieved by developing an autonomous spectral radiation buoy, deploying it on drifting sea ice close to the North Pole, and receiving a high-resolution time series of spectral radiation over and under sea ice from spring(before melt onset) to autumn(after freeze-up) 2012. Beyond this, in-situ sea ice data were collected during several field campaigns and simulations of snow and sea ice thermodynamics were performed. More autonomous measurements are available through deployments of sea ice mass balance buoys. These new observational data along with numerical model studies are helping us to better understand the key thermodynamic processes of Arctic sea ice and changes in polar climate. A strong scientific, but also cultural exchange between Norway, China, and the partners from the USA and Europe initiated new collaborations in Arctic reseach. | Marcel Nicolaus Caixin Wang Sebastian Gerland LI Na LI Zhijun Bin Cheng Don K.Perovich Mats A.Granskog SHI Liqiong LEI Ruibo LI Qun LU Peng | 2015 | Advances in Polar Science2015，26，2： | 0 |
| 4 | Thickness distribution and extent of sea ice and snow in Prydz Bay and surrounding waters observed in 2012/2013 austral summer显示文摘Three ship-based observational campaigns were conducted to survey sea ice and snow in Prydz Bay and the surrounding waters(64.40°S–69.40°S, 76.11°E–81.29°E) from 28 November 2012 to 3 February 2013. In this paper, we present the sea ice extent and its variation, and the ice and snow thickness distributions and their variations with time in the observed zone. In the pack ice zone, the southern edge of the pack ice changed little, whereas the northern edge retreated significantly during the two earlier observation periods. Compared with the pack ice, the fast ice exhibited a significantly slower variation in extent with its northernmost edge retreating southwards by 6.7 km at a rate of 0.37 km?d-1. Generally, ice showed an increment in thickness with increasing latitude from the end of November to the middle of December. Ice and snow thickness followed an approximate normal distribution during the two earlier observations(79.7±28.9 cm, 79.1±19.1 cm for ice thickness, and 11.6±6.1 cm, 9.6±3.4 cm for snow thickness, respectively), and the distribution tended to be more concentrated in mid-December than in late November. The expected value of ice thickness decreased by 0.6 cm, whereas that of snow thickness decreased by 2 cm from 28 November to 18 December 2012. Ice thickness distribution showed no obvious regularity between 31 January and 3 February, 2013. | CHENG Peng HAN Hongwei LEI Ruibo LI Zhijun LU Peng | 2014 | Advances in Polar Science2014，25，1： | 0 |
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