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581.
利用TWP16风廓线雷达资料,对2019年8月10—15日"利奇马"台风在辽宁盘锦登陆引发的强降水天气过程进行诊断分析.结果表明,风廓线雷达资料从时间和空间上能准确清晰地对这次强降水的天气系统变化过程进行连续监测.对流层中下层径向速度大于9 m/s(极值为11.2 m/s)、SNR大于55 dB(极值为70 dB)、Cn2大于1.0×10–10、速度谱宽大于2.5 m/s是强降水发生发展阶段,整个大气层垂直风场运动与降水过程有着较好的对应关系.对流中下层垂直下沉速度数值越大,降水越强,SNR能够很好地揭示强降水发生、发展、结束时雷达接收到目标散射信号的强弱,Cn2最大值1.0×10–10出现的最大探测高度和持续时间与降水有密切的关系.降雨不同高度层内,速度谱宽与其降雨量存在着显著的线性关系,即降雨强度越强,速度谱宽数值越大,反之利用速度谱宽的变化趋势可以得到降水强的变化趋势.研究结果揭示了风廓线雷达水平风廓线、径向速度、SNR、速度谱宽与降雨强度之间的内在联系,为风廓线雷达应用在降雨天气监测提供了参考. 相似文献
582.
Guan Yingying Li Xueming Yang Jun Li Songbo Tian Shenzhen 《Environment, Development and Sustainability》2022,24(3):4150-4174
Environment, Development and Sustainability - The comprehensive suitability of regional human settlements is of great significance to the development and spatial distribution of regional human... 相似文献
583.
Guan Lingliang Yang YuXia Jiang Pan Mou Qiuyu Gou Yunsha Zhu Xueyan Xu Y. Wen Wang Rulin 《Environmental science and pollution research international》2022,29(29):44003-44019
Environmental Science and Pollution Research - Blumea balsamifera is a famous Chinese Minority Medicine, which has a long history in Miao, Li, Zhuang, and other minority areas. In recent years, due... 相似文献
584.
Manganese ion (Mn2+) generated from metallurgical, steel making and chemical industries enters sewage treatment plants and affects the sludge activity and flocculation. The effect of Mn2+ on the removal of chemical oxygen demand (COD) and total phosphorus (TP) and sludge activity were investigated in anoxic zone of an anaerobic/anoxic/oxic (A2O) process. The compositions and structures of extracellular polymeric substances (EPS) were characterized using three-dimensional excitation emission matrix fluorescence spectroscopy (3D-EEM), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) to reveal the relationship among Mn2+, EPS and sludge flocculation.The results showed that low concentration of Mn2+ (<5 mg/L) improved removal efficiencies of COD and TP and increased the activity of alkaline phosphatase, acid phosphatase and dehydrogenase. Meanwhile, the addition of Mn2+ increased total EPS, sludge contact angle, Zeta potential and sludge particle size, and thus enhanced sludge flocculation. However, high concentration of Mn2+ (>10 mg/L) hindered microbial flocculation and reduced removal efficiencies of the pollutants. When Mn2+was 5 mg/L, removal efficiencies of COD and TP reached 65% and 90%, respectively. Sludge flocculation was the best and SVI was 70.56 mL/g. The changes of Mn2+ concentration caused deviation of groups’ compositions in LB-EPS and TB-EPS, where the main components were always protein (PN) and polysaccharide (PS). The addition of Mn2+ resulted in the degradation of humic acids. However, it did not give rise to significant morphology changes of EPS. 相似文献
585.
Xie Yong Zuo Qingsong Guan Qingwu Wei Kexiang Zhang Bin 《Environmental science and pollution research international》2022,29(17):25029-25045
Environmental Science and Pollution Research - Improving the NOx conversion efficiency and particulate combustion efficiency under cold-start conditions (low-temperature conditions) is still the... 相似文献
586.
Huang Yu-Qi Zeng Yuan Wang Tao Chen She-Jun Guan Yu-Feng Mai Bi-Xian 《Environmental science and pollution research international》2022,29(25):37737-37747
Environmental Science and Pollution Research - Plasticizers are ubiquitous pollutants in the environment, whereas few efforts have been made to elucidate their emission sources in the atmosphere.... 相似文献
587.
Liu Anchen Lin Wenting Ping Senwen Guan Wenqi Hu Ningyi Zheng Sichun Ren Yuan 《Environmental science and pollution research international》2022,29(29):43984-44002
Environmental Science and Pollution Research - Antihistamines (ANTs) are medicines to treat allergic diseases. They have been frequently detected in the natural water environment, posing potential... 相似文献
588.
Basit Farwa Liu Jiaxin An Jianyu Chen Min He Can Zhu Xiaobo Li Zhan Hu Jin Guan Yajing 《Environmental science and pollution research international》2022,29(7):10183-10197
Environmental Science and Pollution Research - Brassinosteroids (BRs) are growth-promoting hormones that exhibit high biological activities across various plant species. BRs shield plants against... 相似文献