到全球黑碳(BC ) 和从主要区域射出的 BC 的北极摆动(AO ) 的回答用大气的一般发行量模型被比较地球物理的液体动力学实验室(GFDL ) 大气的一般发行量模型(AGCM ) 大气的模型版本 2.1 (AM2.1 ) 。结果显示全球 BC 能导致 posi-tive-phase AO 回答,在 500 块 hPa 高度地,和带的吝啬的海上在极的帽子上由否定回答描绘了当时,减少的水平压力(SLP ) 带的风在 60 慥潳獮 ? 畢 ? 湩牣慥楳杮琠敲摮 ? 敷敲映畯摮漠汮? 湩猠畯桴牥 ? 桃湩 ? 增加湩猠浵敭 ? 眠楨敬椠 ? 楷瑮牥 ? 桴祥眠牥 ? 潦湵 ? 湩挠湥牴污 ? 楨慮
The responses of the Arctic Oscillation(AO) to global black carbon(BC) and BC emitted from major regions were compared using the atmospheric general circulation model Geophysical Fluid Dynamics Laboratory(GFDL) atmospheric general circulation model(AGCM) Atmospheric Model version 2.1(AM2.1). The results indicated that global BC could induce positive-phase AO responses, characterized by negative responses over the polar cap on 500 h Pa height fields, and zonal mean sea level pressure(SLP) decreasing while zonal wind increasing at 60°, with the opposite responses over midlatitudes. The AO indices distribution also shifted towards positive values. East Asian BC had similar impacts to that of global BC, while the responses to European BC were of opposite sign. South Asian BC and North American BC did not affect the AO significantly. Based on a simple linear assumption, we roughly estimated that the global BC emission increase could explain approximately 5% of the observed positive AO trend of +0.32 per decade during 1960 to 2000.