【摘 要】
：
A combined Raman/elastic backscatter lidar observations is carried out in the Pearl River Delta (PRD) China. The results show the largest lidar ratios of the order of 80 sr in the uplifting boundary layer in 2-3 km during the haze period. In the moderate
【出 处】
：
ChineseOpticsLetters
论文部分内容阅读
A combined Raman/elastic backscatter lidar observations is carried out in the Pearl River Delta (PRD) China. The results show the largest lidar ratios of the order of 80 sr in the uplifting boundary layer in 2-3 km during the haze period. In the moderate pollution period, the lidar ratio has an average value of 58 sr. The Angstrom exponent exhibits high values around 1.82, indicating the presence of rather small particles. Different back air mass trajectories and the ambient atmospheric conditions are attributed to the distinct characteristics of aerosol optical properties in the haze and moderate pollution episodes. In the lower layer in the haze period, air masses are mostly advected from southeast coast China. In contrast, the air mass in the moderate pollution observing period passes through northwest China, indicating the combination of some pollution from the Tarim Basin in case of strong convection and the smoke from adjacent fire burning spot in PRD region.
其他文献
山泉村：富民强村的实践及启示 山泉村是江阴市周庄镇一个拥有1300户3300多户籍人口和4000多外来人口的行政村。近日，山泉村党委荣获中共中央颁发“先进基层党组织”光荣称号，村党委书记李全兴出席全国“两优一先”表彰大会，受到习近平总书记亲切接见
The chromatic aberration of metasurfaces limits their application. How to cancel or utilize the large chromatic dispersion of metasurfaces becomes an important issue. Here, we design Si-based metasurfaces to realize flexible chromatic dispersion manipulat
打造高品位强活力的“湖泊生命体” 习近平总书记在庆祝中国共产党
把根扎在人民的沃土中 习近平总书记强调，江山就是人民、人民就是江山。我们党来自人民、植根人民、服务人民，必须始终把人民利益摆在至高无上的地位。人民永遠是滋养我们的沃土。“民惟邦本，本固邦宁”，为中国人民谋幸福、为中华民族谋复兴始终是共产党人的追求
书写幸福河湖建设新答卷 建设幸福河湖是践行习近平总书记打造“造福人民的幸福河”伟大号召的重要举措，也是打造人民满意幸福城市的重要内容和有力抓手。近年来，南京市浦口区深入貫彻落实习近平生态文明思想，践行新时代治水方针，生态河湖、美丽河湖建设取得显著
建设宜居宜业富裕富足新农村 当前，“三农”工作重心已历史性转向
善听“逆耳言” 习近平总书记强调，“既要听群众的顺耳话，也要听群众的逆耳言”。知政失者在草野，群众真言值千金。新时代党员干部要善于聆听群众的逆耳之言，不断从中汲取奋进前行的智慧与力量。注重开怀纳谏，做到听后有共鸣。只听群众顺耳的赞扬，避免不了浮云
办好实事要强化三种思维 群众利益无小事，一枝一叶总关情。习近平总书记在党史学习教育动员大会上强调，“我们黨的历史就是我们党与人民心心相印、与人民同甘共苦、与人民团结奋斗的历史，一定要一块过、一块干，始终保持同人民群众的血肉联系”。为群众办实事是党
Blue emitting phosphor SrZn
2(PO
4)
2:Eu
2 is synthesized by a high temperature solid state method, and the luminescent properties are investigated. At the 330 nm radiation excitation, SrZn
2(PO
4