基于OMI数据的天水地区对流层HCHO垂直柱浓度变化研究
发布时间：2019-03-28 17:23
【摘要】：近年来,随着大气环境问题研究的深入,大气甲醛(HCHO)作为光化学烟雾的前体物以及致癌物已经引起了人们的关注。通过区域监测,了解其时空分布及其在大气中的动态变化,对城市空气质量的安全预警具有重要意义。研究利用AURE卫星上搭载的OMI(Ozone Monitoring Instrument)新一代大气探测传感器,解译了天水地区2005~2014年对流层痕量气体HCHO垂直柱浓度的反演数据,并经VISON、GIS等软件联合对该产品处理,探究了天水地区的HCHO的空间分布、时间变化特征及其影响因素。结果表明:研究区内对流层HCHO垂直柱浓度在2005~2012年呈现持续增长趋势,由2005年的5.06×10~(15) molec/cm~2增长至2012年的22.25×10~(15)molec/cm~2,2012~2014年表现出显著下降趋势,由2012年最高值下降至2014年的9.74×10~(15) molec/cm~2;冬、夏两季HCHO垂直柱浓度明显高于春、秋两季,其中夏季最高,冬季次之;研究区东部与陕西相邻地区及甘谷县、武山县部分地区呈现明显高值,而天水中部区域HCHO垂直柱浓度较低,而2014年表现为研究区内HCHO浓度值普遍较高。研究表明,遥感监测对于大尺度长时间大区域大气环境监测提供了新的视角。
[Abstract]:In recent years, as a precursor and carcinogen of photochemical smog, atmospheric formaldehyde (HCHO) has attracted more and more attention with the further study of atmospheric environmental problems. It is of great significance for early warning of urban air quality to understand its spatio-temporal distribution and its dynamic changes in the atmosphere through regional monitoring. In this paper, the inversion data of tropospheric trace gas HCHO vertical column concentration in Tianshui area from 2005 to 2014 are interpreted by using the new generation OMI (Ozone Monitoring Instrument) atmospheric sounding sensor on AURE satellite, and the products are processed by VISON,GIS and other software. The spatial distribution, temporal variation characteristics and influencing factors of HCHO in Tianshui area were studied. The results showed that the vertical column concentration of tropospheric HCHO increased continuously from 2005 to 2012, from 5.06 脳 10 ~ (15) molec/cm~2 in 2005 to 22.25 脳 10 ~ (15) molec/cm~2,2012~ in 2012. From its peak in 2012 to 9.74 脳 10 ~ (15) molec/cm~2; in 2014 The vertical column concentration of HCHO in winter and summer was significantly higher than that in spring and autumn, the highest in summer and the second in winter. The concentration of HCHO vertical column in central Tianshui region was lower than that in eastern part of study area and Gangu County and Wushan County in the eastern part of the study area. In 2014, the concentration of HCHO in the study area was generally higher than that in the central part of Tianshui region. The research shows that remote sensing monitoring provides a new perspective for large-scale long-term and large-scale regional atmospheric environmental monitoring.
【作者单位】： 西北师范大学地理与环境科学学院;
【基金】：国家自然科学基金项目“典型区域交通代谢和路域森林生态系统的博弈格局研究”(41161080)
【分类号】：TP79;X87
本文编号：2449073
[Abstract]:In recent years, as a precursor and carcinogen of photochemical smog, atmospheric formaldehyde (HCHO) has attracted more and more attention with the further study of atmospheric environmental problems. It is of great significance for early warning of urban air quality to understand its spatio-temporal distribution and its dynamic changes in the atmosphere through regional monitoring. In this paper, the inversion data of tropospheric trace gas HCHO vertical column concentration in Tianshui area from 2005 to 2014 are interpreted by using the new generation OMI (Ozone Monitoring Instrument) atmospheric sounding sensor on AURE satellite, and the products are processed by VISON,GIS and other software. The spatial distribution, temporal variation characteristics and influencing factors of HCHO in Tianshui area were studied. The results showed that the vertical column concentration of tropospheric HCHO increased continuously from 2005 to 2012, from 5.06 脳 10 ~ (15) molec/cm~2 in 2005 to 22.25 脳 10 ~ (15) molec/cm~2,2012~ in 2012. From its peak in 2012 to 9.74 脳 10 ~ (15) molec/cm~2; in 2014 The vertical column concentration of HCHO in winter and summer was significantly higher than that in spring and autumn, the highest in summer and the second in winter. The concentration of HCHO vertical column in central Tianshui region was lower than that in eastern part of study area and Gangu County and Wushan County in the eastern part of the study area. In 2014, the concentration of HCHO in the study area was generally higher than that in the central part of Tianshui region. The research shows that remote sensing monitoring provides a new perspective for large-scale long-term and large-scale regional atmospheric environmental monitoring.
【作者单位】： 西北师范大学地理与环境科学学院;
【基金】：国家自然科学基金项目“典型区域交通代谢和路域森林生态系统的博弈格局研究”(41161080)
【分类号】：TP79;X87
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