Reliability and Correction Method of Automatic Observation Data of Sand-Dust and Haze in Inner Mongolia
Based on the meteorological observation data with a temporal resolution of three hours from 12 climate stations over Inner Mongolia during the period from 2001 to 2019,the reliability of automatic meteorological observation data for dust and haze and the applicability of discrimination criteria were analyzed through spatial distribution characteristics and research methods.We use PM2.5 and PM10 as standards to correct erroneous records,and then separate the misjudged haze from the sand or separate the misjudged dust from the haze.The results indicate that the frequency of dust and haze was 284 and 4 958 times,respectively,accounting for 5%and 95%of the total frequency before the correction,while the dust frequency is 905 times,accounting for 17%of the total frequency,haze frequency is 2 891 times,accounting for 55%,fog frequency is 33 times,accounting for 0.6%,and the frequency of non dust or non haze is 1 413 times after correction.The corrected records of dust and haze weather phenomena tend to be more reasonable.
国家科技期刊平台
NSTL
万方数据
