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  • 软件名称:基于OMI数据的天水地区对流层HCHO垂直柱浓度变化研究
  • 软件大小: 0.00 B
  • 软件评级: ★★★
  • 开 发 商: 谢顺涛,巨天珍,李兵,卢秀娟,赵欣鑫,王菁,王爽
  • 软件来源: 《遥感技术与应用》
  • 解压密码:www.gissky.net

资源简介

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5.06×1015molec/cm2增长至2012年的22.25×1015 molec/cm2,2012~2014年表现出显著下降趋势,由2012年最高值下降至2014年的9.74×1015 molec/cm2;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。 关键词: HCHO;  对流层;  OMI;  天水;  甘肃省     Abstract: In recent years,the atmospheric environmental issues become increasingly significant.Formaldehyde (HCHO) as a kind of carcinogen,its global testing to understand the spatial and temporal distribution and content in the atmosphere,has important significance for the detection of air quality and public safety.The study on the use of satellite AURE mounted OMI (Ozone Monitoring Instrument) a new generation of atmospheric detection sensors,data for the 2005~2014 January,April,July,October Tianshui vertical columns of tropospheric HCHO concentrations of trace data for each year.By VISON,GIS and other software combined with the product handling,explores the spatial distribution of Tianshui area HCHO,the time variation and their influencing factors.The results show that: the study area,the vertical columns of tropospheric HCHO concentration in 2005 showing sustained growth trend in 2012,2012~2014 chronology exhibit significantly decreased;winter and summer HCHO vertical column concentrations significantly higher than the spring and autumn,which highest in summer and winter followed; the eastern part of the study area and adjacent areas in Shanxi\|parts of Gangu County,Wushan County,exhibits a significantly higher value and lower central region of HCHO Tianshui vertical column density,and in 2014 the performance of HCHO concentration in the study area values are generally higher.Studies have shown that remote sensing is important for large\|scale atmospheric environmental monitoring.

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