Toward Establishing a Low-cost UAV Coordinated Carbon Observation Network(LUCCN): First Integrated Campaign in China     

Dongxu YANG  Tonghui ZHAO  Lu YAO  Dong GUO  Meng FAN  Xiaoyu REN  Mingge LI  Kai WU  Jing WANG  Zhaonan CAI  Sisi WANG  Jiaxu GUO  Liangfu CHEN  Yi LIU 《大气科学进展》2024,(1):1-7

In this study, we introduce our newly developed measurement-fed-perception self-adaption Low-cost UAV Coordinated Carbon Observation Network(LUCCN) prototype. The LUCCN primarily consists of two categories of instruments, including ground-based and UAV-based in-situ measurement. We use the GMP343, a low-cost non-dispersive infrared sensor, in both ground-based and UAV-based instruments. The first integrated measurement campaign took place in Shenzhen, China, 4 May 2023. During the campaign, we f...  相似文献   

Spatio-temporal prediction of regional land subsidence via ConvLSTM     

LENG Jing  GAO Mingliang  GONG Huili  CHEN Beibei  ZHOU Chaofan  SHI Min  CHEN Zheng  LI Xiang 《地理学报(英文版)》2023,(10):2131-2156

Land subsidence is a geohazard phenomenon caused by the lowering of land elevation due to the compression of the sinking land soil body, thus creating an excessive constraint on the safe construction and sustainable development of cities. The use of accurate and efficient means for land subsidence prediction is of remarkable importance for preventing land subsidence and ensuring urban safety. Although the current time-series prediction method can accomplish relatively high accuracy, the predicte...  相似文献   

江西省空气负离子浓度特征与气象因子相关分析北大核心          下载免费PDF全文

方砚秋  张方敏  陈龙  李柏贞  王怀清 《气象科学》2022,42(2):254-260

利用2019年江西省靖安森林试验基地观测资料,分析了靖安森林站空气负离子浓度不同时间尺度的变化特征及其与气象因子的相关性,以及不同天气条件对其的影响。结果表明,靖安市年平均空气负离子浓度为2187个/cm^(3),其中夏季浓度最高为2910个/cm^(3),秋季最低为1756个/cm^(3)。此外,浓度日变化特征也存在明显的季节差异性,其中春夏秋冬四季峰值分别出现在10时(北京时,下同)、06时、09时、13时左右。日尺度上浓度与气温、降水、相对湿度均呈显著的正相关,月尺度上其与降水呈显著正相关。雨天的浓度高于晴天,四个季节雨天峰值分别出现在开始降水的7~9 h、7~15 h、9 h、9~11 h后。当降水量在0~10 mm时,降水对空气负离子浓度没有明显作用,随后浓度随降水量增加而上升,当出现暴雨天气的时候,浓度反而呈现下降趋势。  相似文献   

Analysis on Lithogeochemistry and Progressive Mineralization of Laojunshan Ore Field, Yunnan, China          下载免费PDF全文

KAN Jing  YANG Bin 《地质学报》2014,88(Z2):86-87

Please refer to the attachment(s) for more details.  相似文献   

Fluid Inclusion Study of Diversity Minerals and Its Geological Significance of Xihuashan Tungsten Deposit, Jiangxi Province, China     

HUANG Huilan  CHANG Hailiang  LI Fang  TAN Jing  ZHANG Chunhong  ZHOU Yun 《地质学报》2014,88(Z2):1112-1113

Please refer to the attachment(s) for more details.  相似文献   

Optical remote sensing image characteristics of large amplitude convex mode-2 internal solitary waves: an experimental study     

Zhixin Li  Meng Zhang  Keda Liang  Jing Wang 《海洋学报(英文版)》2023,(6):16-23

A series of experiments are designed to propose a new method to study the characteristics of convex mode-2internal solitary waves(ISWs) in optical remote sensing images using a laboratory-based optical remote sensing simulation platform. The corresponding wave parameters of large-amplitude convex mode-2 ISWs under smooth surfaces are investigated along with the optical remote sensing characteristic parameters. The mode-2 ISWs in the experimentally obtained optical remote sensing image are produc...  相似文献   

暴雨过程中逆风区特征及应用判据研究     

赵海军  李柏  潘玲  吴志彦  王庆华 《海洋气象学报》2019,(2)

为研究暴雨过程中逆风区特征及应用判据,统计分析2010—2017年山东临沂地区暴雨过程中的多普勒雷达观测资料,结果表明:暴雨过程中,风暴内的垂直环流是造成逆风区发生发展的直接原因;逆风区表现为β中尺度和γ中尺度,其形态在不同天气类型下有明显差异;逆风区持续阶段降水强度增大,持续时间与过程累积雨量呈正相关;当雷达最低仰角识别到逆风区,其厚度≥4. 0 km、强度≥15 m·s~(-1)、径向速度绝对值最大值≥5 m·s-1且持续30 min以上时,风暴常明显发展,相关特征可用于预报风暴和暴雨的发展。  相似文献   

Impact of cascade reservoirs on the delayed response behaviour of sedimentation in the Three Gorges Reservoir     

LI Xin  REN Jinqiu  XU Quanxi  YUAN Jing  ZHANG Wei 《地理学报(英文版)》2023,(3):576-598

Delayed response behaviour commonly occurs in conjunction with changes in riverbed scouring and sediment deposition and is a key component in understanding the intrinsic behaviour of reservoir siltation. Due to the complexity of the riverbed siltation process, the variability in the factors that influence siltation and the limitations of available research methods, the understanding of the delayed response behaviour of the sedimentation process in the Three Gorges Reservoir(TGR) is currently mer...  相似文献   

Withdrawal Intention of Farmers from Vacant Rural Homesteads and Its Influencing Mechanism in Northeast China: A Case Study of Jilin Province     

YU Jiaping  LI Jing  LO Kevin  HUANG Shanlin 《中国地理科学(英文版)》2023,(4):634-648

The effective use of land in Northeast China is of great significance for ensuring national food security and regional rural revitalization. In this study, based on the survey data collected from Jilin Province, Northeast China, we analyzed the vacancy rates of rural homesteads in suburban, outer suburban, and remote villages, as well as the withdrawal intention of rural-settled farmers, urbansettled farmers, and farmers with urban and rural dual residency from vacant homesteads. From the perspe...  相似文献   

Tracing surface seawater mixing and nutrient transport by ²²²Rn on the northern coast of Beibu Gulf,China     

Hao Wang  Qiangqiang Zhong  Fule Zhang  Suiyuan Chen  Hongyan Bao  Jing Lin  Dekun Huang  Tao Yu 《海洋学报(英文版)》2023,(8):87-98

The transport and diffusion of substances in seawater are limited by the mixing motion of water bodies, while the main forms of mixing in offshore water bodies are advection and eddy diffusion. The eddy diffusion process of water indicates the possible transport direction of dissolved substances. However, the complex environment in the coastal zone makes it difficult to quantitatively assess the water diffusion process. ²²²Rn is a useful tool to trace the diffusion process of water bo...  相似文献