【摘 要】
：
At Dome Argus, present surface mass balance (SMB) was investigated by 49-stakes from 2008, over a 30×30 km area.Surface density and surface topography was also surveyed during fieldwork.The representa
【机 构】
：
Institute of Climate System, Chinese Academy of Meteorological Sciences, Beijing 100081, China;State
【出 处】
：
第八届全国优秀青年气象科技工作者学术研讨会
论文部分内容阅读
At Dome Argus, present surface mass balance (SMB) was investigated by 49-stakes from 2008, over a 30×30 km area.Surface density and surface topography was also surveyed during fieldwork.The representativeness analysis suggests 12 and 20 sites are optimum quantities for local and regional studies on SMB.The average SMB was estimated at 22.9±5.9 kg m-2 a-1.This agrees well with the annual SMB from ~1965 to 2009 (21 and 23 kg m-2 a-1) estimated from the β-Radioactivity peaks.The distribution of SMB doesnt show obvious correlation with elevation or slope, except the west part, where density and SMB are higher than the rest, probably because of the katabatic wind accelerated by topography.Besides, the new surface topography of Dome Argus is generated and we confirmed both peaks of Dome Argus could be considered as the summit of East Antarctica Ice Sheet.
其他文献
将1983-2010年河北省麦区7个站点的白粉病发生程度与同期气象资料进行相关分析,初步明确了3月下旬-4月中旬平均相对湿度是影响病害流行的关键气象因子;t检验结果显示,河北省白粉病轻、重分布区的差异不显著,表明不必分区建立预测函数;通过Fisher判别准则,构建了白粉病发生程度的判别分级模型,其历史拟合率达到82.5％,2010年的试报准确率达到100％,表明模型预报效果较好.该模型的建立提高了
The plasma characteristics of a lightning discharge channel are reviewed.The spectrum of the natural lighting is investigated by employing the slit-less spectrograph.It is found that the spectrurm cha
利用内蒙古典型草原21个气象站点的气象和数草观测资料,结合潜在蒸散量和改进的作物系数计算方法,模拟计算了2009年草原植被作物系数和实际蒸散量.在GIS软件的支持下,分析了二者的时空分布特点,并通过反映牧草长势的NDVI变化趋势予以验证.结果表明:5-8月间随着月份的增加作物系数Kcx最大值的变化趋势由0.6→1.2→1.4→1.4,平均值是0.28→0.36→0.40→0.38.4个时期的Kcx
利用东北地区153个气象站1961-2010年逐日气温资料,采用统计学方法分析水稻障碍型低温冷害的气候特征,并与孕穗期和抽穗-开花期温度进行相关分析.结果表明:东北大部水稻障碍型低温冷害事件呈减少趋势,且其区域性分布较明显,表现为吉林大部在水稻孕穗期、辽宁局部在抽穗期低温冷害呈增加趋势;近50a低温冷害发生站次年际波动较大,总体呈减少趋势,但2001-2010年冷害发生站次明显增多;障碍型低温冷害
Plant phenology models, especiallyy leafing models, play critical roles in evaluating the impact of climate change on the primary production of temperate plants.Existing models based on temperature al
应用NCEP资料(2.5°×2.5°和1°×1°)、WRFV3.3.1模式预报(3km×3km)、FY2卫星产品等资料,对2013年8月12-17日吉林省中东部持续性暴雨过程分析,发现:此次过程是在多种尺度天气系统共同作用下形成的.环流背景上,纬向型环流形势的稳定维持,使西风带上的天气尺度系统重复影响东北地区,并为暴雨区提供了源源不断的水汽供应.天气尺度上,低空急流提供了中小尺度上升运动发生发展的
根据丰林自然保护区1999-2010年红松(Pinus korai ensis)结实量数据,运用相关分析和Mann-Kendall法,对红松结实规律及温度变化对其结实的影响进行了分析,结果表明:1)红松结实具有自我限制性,当年结实量与前两年结实累积量呈显著负相关,该指标对红松结实量具有非常好的预测效果;2)红松花芽形成期经历的低温春化过程有利于红松结实;3)当年≥0℃积温越高、1月份温度越低越有利
MODIS derived aerosol optical depths (AODs) at 550 nm are compared with sunphotometer CE318 measurements at 7 sites located at Yangtze River Delta (YRD) in China from July to October, 2007.The evaluat
Extended-range (10-30 day) forecast, lying between well-developed short-range weather and long-range (monthly and seasonal) climate predictions, is one of the most challenging forecast currently faced