THE EFFECTS OF STATION NETWORK DENSITY ON STATISTICAL ANALYSES OF TROPICAL CYCLONE PRECIPITATION     

鲁小琴  余晖  应明  漆梁波 《热带气象学报(英文版)》2018,24(4):421-432

In this paper, 1416 conventional ground-based meteorological observation stations on the mainland of China were subdivided into groups of differing spatial density. Data from each subgroup were then used to analyze variations in the tropical cyclone (TC) precipitation statistics derived from each subgroup across the mainland of China (excluding Taiwan, Hong Kong, and Macao), as well as in two regions (east China and south China) and three provinces (Guangdong, Hainan, and Jiangxi) between 1981 and 2010. The results showed that for the mainland of China, total precipitation, mean annual precipitation, mean daily precipitation, and its spatial distribution were the same regardless of the spatial density of the stations. However, some minor differences were evident with respect to precipitation extremes and their spatial distribution. Overall, there were no significant variations in the TC precipitation statistics calculated from different station density schemes for the mainland of China. The regional and provincial results showed no significant differences in mean daily precipitation, but this was not the case for the maximum daily precipitation and torrential rain frequency. The maximum daily precipitation calculated from the lower-density station data was slightly less than that based on the higher-density station schemes, and this effect should be taken into consideration when interpreting regional climate statistics. The impact of station density on TC precipitation characteristics was more obvious for Hainan than for Guangdong or Jiangxi provinces. In addition, the effects were greater for south China (including Guangxi Zhuang Autonomous region, Guangdong, and Hainan provinces) than east China (including Shandong, Jiangsu, Zhejiang, Shanghai, Fujian, Anhui, and Jiangxi provinces). Furthermore, the analysis proved that the statistical climatic characteristics began to change significantly when the station spacing was between 40 and 50 km, which are close to the mean spacing for all stations across the mainland of China. Moreover, TC areal precipitation parameters, including mean total areal precipitation and mean daily areal precipitation, also began to change significantly when the spacing was between 40 and 50 km, and were completely different when it was between 100 and 200 km.  相似文献   

The IAMAS-CNC Early Career Scientists Nobel Prize Online Interpretation Workshop     

Jing LI  Zhongjing JIANG  Yueming DONG  Lu ZHANG  Tong YING  Zhenyu ZHANG  Mu MU 《大气科学进展》2022,39(6):1012-1015

1.Overview The 2021 Nobel Prize for Physics was awarded to three scientists for their contribution to the physical understanding of complex systems(The Nobel Committee for Physics,2021).Two of the laureates,Dr.Syukuro MANABE and Dr.Klaus HASSELMANN,are climate scientists.This is the first time a climate scientist has won a Nobel Prize for physics and is thus a great encouragement to the entire climate science community,especially young scientists.Because the two winners'groundbreaking contributions that led to their award were achieved decades ago,young people may not be very familiar with these works.Therefore,to help young scientists better understand the scientific merit of the fundamental works and to inspire them in their future research careers,on 20 October 2021,the young scientist working group of The China National Committee of the International Association of Meteorology and Atmospheric Sciences(IAMAS-CNC)organized an online Nobel Prize interpretation workshop.Over 400 participants attended the online workshop,and more than 120000 parti-cipants watched the replay.  相似文献   

基于用岛类型和方式的舟山市无居民海岛分类保护应用研究          下载免费PDF全文

李爱国  邬梁超  王平波  应诗瑶  金瑜嘉  叶云  廖维敏 《海洋开发与管理》2022,39(8):85-90

无居民海岛是舟山市经济、社会和生态发展的重要资源支撑。为促进舟山市无居民海岛的精细化管理和可持续发展,文章分析舟山市无居民海岛开发利用和保护存在的问题,提出无居民海岛分类保护原则,基于国家权益类、自然保护区类、海洋特别保护区类、其他重要保护类、限制开发类和保留类的单岛功能定位分别制定管理方案,基于旅游娱乐用岛等9种用岛...  相似文献   

青岛滨海地质旅游   总被引：1，自引：0，他引：1  

丁东  李晓红 《海岸工程》1999,18(2):90-93

青岛滨海旅游具有丰富的地质资源,合理地开发会使其具有专业特色,娱乐性和趣味性。滨海地质旅游将促进旅游业的发展,在向现代化国际城市中发挥作用。  相似文献   

浙南岛屿潮间带蟹类的区系特点   总被引：7，自引：0，他引：7  

应雪萍  黄敏君 《海洋湖沼通报》1999,(4):31-37

作者根据１９９０—１９９７历年对浙南岛屿潮间带生态调查所获的材料,分析了该地区蟹类的区系特点。经整理鉴定计蟹类９７种,隶属于１２科５６属,其中软相７０种、硬相３２种,硬、软相皆有出现的为５种。该地区蟹类区系以亚热带暖水性种类占优势,其次为暖温带性种类,属印度──西太平洋区系区的中国──日本亚区。蟹类的组成与分布受到海流、底质、潮汐等综合因素的影响。  相似文献   

我国海洋经济发展影响因素及发展趋势研究——基于三大海洋经济圈的实证分析          下载免费PDF全文

营计德 《海洋开发与管理》2023,40(1):83-93

海洋强国战略和“十四五”规划对我国海洋经济发展提出了高质量发展要求。文章从我国海洋经济发展的概况出发,使用环渤海地区、长江三角洲地区以及珠江三角洲地区的海洋经济发展集成数据,运用Cite Space进行可视化结果分析,厘清了我国海洋经济发展的若干影响因素并构建了我国海洋经济发展水平的综合评价体系。基于此,文章通过进一步建立固定效应模型实证检验了此类影响因素对我国海洋经济发展的影响作用。实证结果表明：地区经济发展水平、产业发展和我国海洋经济发展之间存在协同促进作用,而基础设施建设不足和城市化水平差异则对海洋经济发展产生了一定的制约。文章也对我国海洋经济发展的不足和前景进行了剖析,以期为我国海洋经济发展提供针对性的政策建议。  相似文献   

水产饲料添加剂--多糖肽对珍珠贝生长的影响   总被引：1，自引：0，他引：1  

龙丽娟  陈永福  张偲 《海洋科学》2004,28(11):15-19

利用光度法测定法分别测定了水产饲料添加剂多糖肽(简称多糖肽)的氨基酸、多糖和维生素的含量;利用平行对照试验法,观察了多糖肽对珍珠贝生长发育的影响。实验结果表明,多糖肽的氨基酸、多糖和维生素含量分别为40％～48％,12％～19％和9％～10％;多糖肤具有显著促进合浦珠母贝(Pinctada functa Gould)后期幼虫、幼龄贝和大珠母贝(Pinctada maxima Jameson )幼龄贝生长发育的作用、同时能够提高大珠母贝幼龄贝的存活率。  相似文献   

基于MODIS数据的2002～2006年中国陆地NPP分析   总被引：2，自引：0，他引：2  

王李娟  牛铮  旷达 《国土资源遥感》2010,(4)

对2002～2006年MODIS数据进行处理,统计得出5 a间全国年均陆地植被净初级生产力(NPP)为1.5 PgC;5 a全国NPP组成分析显示,NPP绝大部分集中在0～300 gC/m2区间,所占比例约为70%～85%;全国大部分地区年NPP呈现出减少的趋势,受城市扩张、新增工业用地等人类活动影响显著。  相似文献   

土地确权案引发的法律问题思考   总被引：1，自引：0，他引：1       下载免费PDF全文

石凤友  张丽娟 《山东国土资源》2005,21(11):24-25

0引言 1994年某市人民政府为辖区某村1宗集体土地颁发了集体土地建设用地使用权证书。该市某一居民声称该宗地应是他个人的,原因是1951年土改时此宗地分给了某人（有土地证证实）,他于1953从其手中购买（此说无证明）,鉴于此,要求居委会出面为其要回该宗土地。其事实是从1953年该宗地就由某村民使用至1955年秋,并以此土地及地上附属物加入了村前进初级社。后折价归村集体所有至今。所以市政府为该村颁发证书行为事实根据确实可行、程序合法、适用法律适当,是无可非议的。  相似文献   

夹皮沟金矿区控矿因素及找矿方向     

孟继伟  齐丽娟  陈涛  宋诗信 《吉林地质》2004,23(3):47-52

夹皮沟金矿区各矿山资源已近枯竭,而各种预测结果都显示夹皮沟矿区潜在资源可观。本文描述了该区金矿成矿地质背景、矿床特征,分析了矿区的地球物理、地球化学特征、控矿因素和各种找矿标志,指出了今后的找矿方向。  相似文献