Decadal fluctuation of aerosol recorded in the ice core and arctic oscilation

极地冰冻圈通过其在地球上的水和能量循环，在全球气候变化中发挥着重要作用。大气环流，作为纬向热量不平衡的结果，在赤道上升热空气，并在高层向极地流动。因为空气在运输过程中被冷却并堆积到极地。随着大气环流，各种来源的物质以及污染物被输送到极地地区，汇集并储存在雪层中。极地冰芯记录了全球气溶胶流动的历史，是该地区过去气候的有效指示器。极地冰冻圈通过冰雪覆盖面积的增减，决定着赤道之间的热量平衡。特别是在北极地区，海冰面积的年增减对热量平衡的影响很大，本文还估算了过去气温和大气气溶胶的变化， ...更多信息 本文根据北极各冰川和冰高原冰芯记录，结合氧同位素比值和化学物质记录，对1998~1999年北极气溶胶的年代际变化特征进行了分析。冰芯记录的年代际变化特征可能反映了气溶胶库和大气环流活动的年代际变化特征。北极中部Summit和南部Dai3、格陵兰岛、巴芬岛Penny冰帽、这里讨论了Elzimia岛的Agassi冰帽，Svarbal岛东北部的Austfonna冰帽。冰芯的定年方法是用氧同位素年比值估算冰芯的年龄，而过去大气气溶胶的变化则是由冰芯中的化学物质浓度估算的。在北极振荡指数下考虑了岩心数据的时间序列。冰芯氧同位素比值引起的气温年代际波动在不同地区表现为正相关和负相关。对全球气候系统下的北极环境作了进一步的讨论。少

The polar cryosphere plays an important role in global climatic change, through its water and energy cycles in the earth. The atmospheric circulation, as a consequence of the latitudinal heat imbalance, gets to rise hot air at the equator and to flow poleward at high level. As the air was cooled in transit and piled up to polar regions. With the circulation of air, the substances in various origin, as well as the pollutant, were transported to polar regions, which were compiled and reserved in snow layers. The ice core, recovered in polar regions, records the history of global flow of aerosol, which was the effective indicator for the past climate in the area. And also the polar cryosphere decides the heat balance between the equator through the increase and decrease of the area covered by the snow. Especially in the Arctic, the annual increase or decrease of sea ice area get great influence on the heat balance.The past fluctuation of air temperature and atmospheric aerosol were estima … More ted from the ice core record obtained from various glaciers and ice plateau in the Arctic with the oxygen isotopic ratio and chemical substances record in the ice core.The decadal fluctuation recorded in ice core possibly reflects the past fluctuation of activities in the aerosol reservoir and atmospheric circulation.The core records obtained in Summit in the central region and Dai3 in southern region, Greenland, Penny ice cap in Baffin island, Agassi ice cap in Elzimia island, Austfonna in the Svarbal north east island were discussed here. The dating of ice core was estimated annual oxygen isotopic ratio and the past fluctuation of atmospheric aerosol was estimated from the chemical concentrations in ice core. The time series of core data was considered under the Arctic oscilation index. The decadal fluctuation of air temperature induced fromoxygen isotopic ratio in the ice core shows positive and negative relationship depending upon the regions. The further discussion will be available for the Arctic environments under the global climate system. Less