CAJ | 학술논문

利用杭州国家基准气候站2011—2013年的环境气象资料,对相对湿度(relative humidity,RH)、颗粒物质量浓度与能见度(V)之间的对应关系进行统计分析,结果表明：杭州市区颗粒物的吸湿性增加比较明显,当 RH≥80%时,相对湿度对能见度的影响十分明显,而在干霾过程中,PM2.5质量浓度对能见度的影响程度大于相对湿度对能见度的影响程度.其次是能见度与 PM2.5质量浓度呈指数对应关系,RH<80%时的相关性好于 RH≥80%时的相关性；三是 PM2.5浓度的减少对能见度的改善效果有不同的阶段性,PM2.5浓度从150μg·m-3降到75μg·m-3时,其质量浓度的减少对能见度的改善效果不很明显,当 PM2.5质量浓度小于50μg·m-3时,能见度随 PM2.5质量浓度的降低而快速上升.此外,从高时间分辨率气象资料可以反映出由于辐射冷却引起的多次雾霾转换过程中能见度变化特征具有很高的相似性.
이용항주국가기준기후참2011—2013년적배경기상자료,대상대습도(relative humidity,RH)、과립물질량농도여능견도(V)지간적대응관계진행통계분석,결과표명：항주시구과립물적흡습성증가비교명현,당 RH≥80%시,상대습도대능견도적영향십분명현,이재간매과정중,PM2.5질량농도대능견도적영향정도대우상대습도대능견도적영향정도.기차시능견도여 PM2.5질량농도정지수대응관계,RH<80%시적상관성호우 RH≥80%시적상관성；삼시 PM2.5농도적감소대능견도적개선효과유불동적계단성,PM2.5농도종150μg·m-3강도75μg·m-3시,기질량농도적감소대능견도적개선효과불흔명현,당 PM2.5질량농도소우50μg·m-3시,능견도수 PM2.5질량농도적강저이쾌속상승.차외,종고시간분변솔기상자료가이반영출유우복사냉각인기적다차무매전환과정중능견도변화특정구유흔고적상사성.
The relationship between atmospheric visibility(V)and its relevant affecting factors,such as the relative humidity(RH)and the mass concentration of particulate matter in Hangzhou from 2012 to 2013 is analyzed with statistic method in this paper.The results show that,atmospheric particles in Hangzhou grow obviously through moisture absorption.The relative humidity(RH)has prominent effect on the visibility when it is equal to or greater than 80%,while it has less impact than that of PM2.5 concentration on the visibility when itis less than 80%,or in the dry haze process.Secondly,the massconcentration of PM2.5 matter is exponential with the visibility,and a more closed relation is found when RH is less than 80%.Third,impact of PM2.5 reduction on visibility shows differently when the PM2.5 concentration is varied.That is,when the PM2.5 concentration reduces from 1 50 μg·m-3 to 75μg·m-3 ,the visibility will not be much improved,while when the PM2.5 concentration reduces to the level of less than 50 μg·m-3 ,it will be very helpful in the visibility melioration.Furthermore,the characteristics of atmospheric visibility show high identity in fog-haze conversion caused by radiation cooling according to the high temporal resolution meteorological data.