基于OMI数据的兰州地区对流层甲醛时空变化研究

发布时间：2018-04-05 19:34

本文选题：对流层　切入点：OMI　出处：《环境科学学报》2017年11期

【摘要】：基于OMHCHO遥感数据产品,对兰州地区2006—2016年对流层甲醛柱浓度的时空分布进行了分析,并对与其排放相关的因素进行了探讨,结果表明:2006—2016年对流层甲醛柱浓度整体呈上升趋势,其中2006—2011年甲醛柱浓度增加迅速,最大增长率为21.0%,2012—2016年甲醛柱浓度平缓波动上升,11年中年均增长率为5.4%;空间上甲醛柱浓度整体呈现由兰州市区西部及与其相邻的永登县部分区域向周边区域递增的趋势,2006—2011年表现为浓度级的增加和区域的扩大,2012—2015年浓度级及其区域基本不变,2016年在东南部出现高值甲醛柱浓度区;每年的最高值出现在6—8月份,11年中最大的柱浓度值出现在2011年的7月份,最低值基本出现在2—4月份,11年中最低的柱浓度值出现在2006年的2月份;四季对流层甲醛柱浓度水平为:夏季冬季秋季春季;影响因素中气温和风向对大气中甲醛的生成和分布有着促进作用,兰州地区生产总值及各产业增加值,尤其是工业产值和机动车保有量的增加,与甲醛柱浓度升高密切相关,这些人为因素是对流层中甲醛柱浓度变化的主要原因.
[Abstract]:Based on the OMHCHO remote sensing data product, the temporal and spatial distribution of formaldehyde column concentration in the troposphere from 2006 to 2016 in Lanzhou area was analyzed, and the factors related to its emission were discussed.The results showed that the concentration of formaldehyde in the troposphere showed an increasing trend from 2006 to 2016, and the concentration of formaldehyde column increased rapidly from 2006 to 2011.The maximum growth rate is 21.0% and the average annual growth rate of formaldehyde column is 5.4% in 11 years. The overall formaldehyde column concentration increases from the west of Lanzhou city and the adjacent part of Yongdeng County to the surrounding area.From 2006 to 2011, the increase of concentration level and the expansion of region showed that the concentration level of 2012-2015 and its region remained basically unchanged, and the high value formaldehyde column concentration zone appeared in the southeast in 2016;The highest value of each year appears in June-August, the largest column concentration in 11 years appears in July 2011, the lowest value appears in February and April, and the lowest column concentration in 11 years appears in February of 2006.The levels of formaldehyde column concentration in the troposphere in the four seasons are as follows: summer, winter, autumn and spring; the air temperature and wind direction promote the formation and distribution of formaldehyde in the atmosphere;Especially the increase of industrial output value and vehicle ownership is closely related to the increase of formaldehyde column concentration. These man-made factors are the main reasons for the change of formaldehyde column concentration in the troposphere.
【作者单位】：西北师范大学地理与环境科学学院;兰州市环境保护局;
【基金】：国家重点研发计划(No.2016YFC0500907)~~
【分类号】：X51

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