| ZHENG Jiajia,KE Changqing,SHAO Zhude.Winter sea ice albedo variations in the Bohai Sea of China[J].Acta Oceanologica Sinica,2017,36(1):56-63 |
| 渤海冬季海冰反照率变化 |
| Winter sea ice albedo variations in the Bohai Sea of China |
| 投稿时间：2015-11-29 修订日期：2016-02-24 |
| DOI：10.1007/s13131-017-0993-3 |
| 中文关键词: 渤海海冰区域 反照率 时空变化 趋势 海冰密集度 海冰范围 海表温度 |
| 英文关键词:Bohai Sea sea ice region albedo variations in space and time trend sea ice concentration sea ice extent sea surface temperature |
| 基金项目: |
| 作者 | 单位 | E-mail | | 郑佳佳 | 江苏省地理信息技术重点实验室, 南京大学, 南京 210023
软件新技术与产业化协同创新中心, 南京 210023
中国南海研究协同创新中心, 南京 210023
江苏省地理信息资源开发与利用协同创新中心, 南京 210023 | | | 邵珠德 | 江苏省地理信息技术重点实验室, 南京大学, 南京 210023
软件新技术与产业化协同创新中心, 南京 210023
中国南海研究协同创新中心, 南京 210023
江苏省地理信息资源开发与利用协同创新中心, 南京 210023 | kecq@nju.edu.cn | | 柯长青 | 卫星测绘技术国家测绘地理信息局重点实验室, 南京大学, 南京 210023
软件新技术与产业化协同创新中心, 南京 210023
中国南海研究协同创新中心, 南京 210023
江苏省地理信息资源开发与利用协同创新中心, 南京 210023 | |
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| 中文摘要: |
| 渤海海冰对于大尺度气候变化比较敏感，基于CLARA-A1-SAL数据分析了1992~2008年冬季（12、1、2月）渤海海冰区域反照率的时空变化，同时分析了海冰密集度、海冰外延线面积和海水表面温度的变化与海冰反照率的相互关系。渤海海冰区域反照率随时间波动变化且变化趋势不明显，趋势线斜率仅为0.0388%。年际变化在9.93%~14.5%之间，平均值为11.79%。海冰反照率在1999，2000和2005等重冰年的值明显高于其他年份，在1994，1998，2001和2006等轻冰年的值较低。从单个月份反照率来看，12月海冰反照率的增加趋势（趋势线斜率0.0988%）明显高于1月和2月，1月的海冰反照率平均值（12.9%）高于另外两个月份。海冰反照率和海冰密集度呈明显的正相关关系；和海表面温度呈负相关关系（显著性水平90%）。 |
| 英文摘要: |
| Sea ice conditions in the Bohai Sea of China are sensitive to large-scale climatic variations. On the basis of CLARA-A1-SAL data, the albedo variations are examined in space and time in the winter (December, January and February) from 1992 to 2008 in the Bohai Sea sea ice region. Time series data of the sea ice concentration (SIC), the sea ice extent (SIE) and the sea surface temperature (SST) are used to analyze their relationship with the albedo. The sea ice albedo changed in volatility appears along with time, the trend is not obvious and increases very slightly during the study period at a rate of 0.388% per decade over the Bohai Sea sea ice region. The interannual variation is between 9.93% and 14.50%, and the average albedo is 11.79%. The sea ice albedo in years with heavy sea ice coverage, 1999, 2000 and 2005, is significantly higher than that in other years; in years with light sea ice coverage, 1994, 1998, 2001 and 2006, has low values. For the monthly albedo, the increasing trend (at a rate of 0.988% per decade) in December is distinctly higher than that in January and February. The mean albedo in January (12.90%) is also distinctly higher than that in the other two months. The albedo is significantly positively correlated with the SIC and is significantly negatively correlated with the SST (significance level 90%). |
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