摘要
基于地基多轴差分吸收光谱技术（Multi-axis different optical absorption spectroscopy,简称MAX-DOAS）,分析位于天山南坡典型干旱区城市,库尔勒市大气对流层NO2垂直柱浓度（Vertical column densities简称VCD）分布、变化,以了解其变化规律和分布特点。研究表明：（1）库尔勒不同观测点对流层NO2VCD高低表现为,农田区〉新市区〉老城区,农田区NO2浓度最大达到3.40×1015molec/cm2。（2）市区观测点,新城区和老城区对流层NO2浓度变化趋势基本一致,呈现V和U字形变化趋势,早上和晚间浓度较高,中午浓度较低,市区浓度变化范围分别为1.91×1015~4.02×1015、0.22×1015~4.59×1015molec/cm2。（3）农田呈现出与市区不同的变化趋势,农田观测区中午之前浓度较低,中午之后NO2浓度呈现升高的趋势。
Based on ground multi-axis differential optical absorption spectroscopy （MAX-DOAS）, the tropospheric atmospheric concentrations of NO2 vertical column distribution,change over Korla City,south slope of Mount Tianshan,a typical city in the add area in the western region of China were analyzed, to understand the variation and distribution characteristics.Results show that different observation sites with a different tropospheric NO2 VCD in Korla City,farmland area 〉 new town〉old town, with the maximum in farmland area as 3.40×1015 molec/cm2. Urban observation sites, as well as the new and old town tropospheric NO2 concentration showed a trend of V and U,with the concentration higher at morning and evening,lower concentration at noon, and the concentration of urban observation sites are in the range of 1.91×1015--4.02× 1015, 0.22 ×1015 -4.59 ×1015 molec/cm2 respectively. The trend of the farmland is different from the urban, with NO2 concentration lower in the morning, then showing a trend of rising.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2015年第8期101-104,155,共5页
Environmental Science & Technology
基金
国家自然科学地区基金项目资助(41161010)
中国沙漠气象科学研究基金资助(Sqj2012012)
关键词
对流层
NO2
垂直柱浓度
库尔勒市
tropospheric
nitrogen dioxide（NO2）
vertical column density（VCD）
Korla City
