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Influence of sea-land breeze on the formation and dissipation of severe dense fog and its burst reinforcement in the Yellow Sea coastal area,china

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Science china Earth sciences 2024年第2期67卷 432-449页

作者： Ya GAO Duanyang LIU Shuqi YAN Wenjun zhou Hongbin WANG Fan ZU Qin MEI Chuanxiang YI Ye SHENG key Laboratory of Transportation Meteorology of china {2. Administration Nanjing210041China Yancheng meteorological Bureau Yancheng224000China Nanjing Joint Institute for Atmospheric sciences Nanjing210041China key Laboratory of Disaster weather Chinese Academy of Meteorological SciencesBeijing100086China

Based on the global reanalysis data of the National Centers for Environmental Prediction(NCEP)/National Center for Atmospheric Research,the surface meteorological observation data,sounding data and satellite observation data,this paper comprehensively analyzes the evolution process and formation mechanism of a persistent severe dense fog process occurred on February 15–17,2.15 in Yancheng,eastern *** the numerical simulation experiment of {2. Research and Forecast(WRF)model,we further analyze the impact of sea-land breeze on the formation and burst reinforcement of *** show that the precipitation caused by the southwesterly airflow in front of the upper-level trough and the low-pressure inverted trough are conducive to the formation of early rain fog,while the nighttime clear radiance under the control of surface cold high and the infiltration of weak cold advection are conducive to the formation and development of later radiation-advection *** WRF model simulates the fog evolution process,which is basically consistent with the actual fog area,and the simulation results are credible to a certain *** simulation results show that the establishment of sea breeze has an advection cooling effect on the near surface layer,which is conducive to the formation and development of the inversion layer on the near surface,providing stable stratification conditions for the formation and burst reinforcement of *** one hand,the strengthening of sea breeze circulation can continuously transport water vapor to the study *** the other,the occurrence of ultra-low level jet is favorable for the accumulation of low-level water *** the same time,the inversion intensity further strengthens,which is in favor of the burst reinforcement and long-term maintenance of fog.

关键词： Radiation-advection fog Sea-land breeze Atmospheric boundary layer Fog burst reinforcement WRF model

A novel approach in predicting non-stationary time series by combining external forces

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chinese Science Bulletin 2011年第28期56卷 3053-3056页

作者： WANG GeLi YANG PeiCai BIAN JianChun zhou xiuji Laboratory for Middle Atmosphere and Glotal Environment Observation Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China chinese academy of {2. sciences Beijing 100081 China state key Laboratory of {2. weather Beijing 100081 China

In this paper, we investigate a novel technique that reconstructs the observed time series and incorporates driving forces. Furthermore, to illustrate and test the technique, we consider a couple of predictive experiments using ideal time series provided by the logistic and Lorenz systems with specific driving forces. The preliminary results show this approach can improve prediction proficiency to some extent, and the external forces play a similar role to that of state variables.

关键词：时间序列预测非平稳 Lorenz系统测试技术预测能力状态变量驱动力理想

Revisiting the response of western North Pacific tropical cyclone intensity change to vertical wind shear in different directions

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Atmospheric and Oceanic Science Letters 2021年第3期14卷 42-48页

作者： xiuji Liang Qingqing Li key Laboratory of meteorological Disaster of the Ministry of Education Nanjing University of Information Science and TechnologyNanjingChina state key Laboratory of {2. weather Chinese Academy of Meteorological SciencesBeijingChina

The effect of vertical wind shear(VWS)directions on the change in western North Pacific tropical cyclone(TC)intensity is revisited in this *** show that the differences in the correlations between VWS in different orientations and the change in TC nondimensional intensity highly diminish,although slight differences are still *** subtle differences in the correlations are likely associated with different synoptic-scale patterns at upper and lower *** result suggests that,in addition to thermodynamic effects,dynamic roles of the synoptic-scale patterns associated with the VWS should also be taken into account when the authors examine how VWS in different directions affects TC intensity change.

关键词： Tropical cyclone Intensity change Vertical wind shear direction Large-scale pattern

Monitoring Sea Fog over the Yellow Sea and Bohai Bay Based on Deep Convolutional Neural Network

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Journal of Tropical Meteorology 2024年第3期30卷 223-229页

作者： HUANG Bin GAO Shi-bo YU Run-ling ZHAO Wei zhou Guan-bo National meteorological Center Beijing 100081 China state key Laboratory of {2. weather Chinese Academy of Meteorological SciencesBeijing 100081 China key Laboratory of South china Sea {2. Disaster Prevention and Mitigation of Hainan Province Haikou 570203 China Agronomy College Shenyang Agricultural UniversityShenyang 110866 China Shanghai Typhoon Institute China Meteorological AdministrationShanghai 200030 China key Laboratory of Numerical Modeling for Tropical Cyclones China Meteorological AdministrationShanghai 200030 China

In this paper,we utilized the deep convolutional neural network D-LinkNet,a model for semantic segmentation,to analyze the Himawari-8 satellite data captured from 16 channels at a spatial resolution of 0.5 km,with a focus on the area over the Yellow Sea and the Bohai Sea(32.-42.N,117°-12.°E).The objective was to develop an algorithm for fusing and segmenting multi-channel images from geostationary meteorological satellites,specifically for monitoring sea fog in this ***,the extreme gradient boosting algorithm was adopted to evaluate the data from the 16 channels of the Himawari-8 satellite for sea fog detection,and we found that the top three channels in order of importance were channels 3,4,and 14,which were fused into false color daytime images,while channels 7,13,and 15 were fused into false color nighttime ***,the simple linear iterative super-pixel clustering algorithm was used for the pixel-level segmentation of false color images,and based on super-pixel blocks,manual sea-fog annotation was performed to obtain fine-grained annotation *** deep convolutional neural network D-LinkNet was built on the ResNet backbone and the dilated convolutional layers with direct connections were added in the central part to form a string-and-combine structure with five branches having different depths and receptive *** show that the accuracy rate of fog area(proportion of detected real fog to detected fog)was 66.5%,the recognition rate of fog zone(proportion of detected real fog to real fog or cloud cover)was 51.9%,and the detection accuracy rate(proportion of samples detected correctly to total samples)was 93.2..

关键词： deep convolutional neural network satellite images sea fog detection multi-channel image fusion

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陆—气相互作用研究展望

地球科学进展 2024年第7期39卷 661-670页

作者：周广胜周梦子周莉汲玉河中国气象科学研究院灾害天气国家重点实验室河北固城农业气象国家野外科学观测研究站北京100081 南京信息工程大学气象灾害预报预警与评估协同创新中心江苏南京210044 中国气象科学研究院—郑州大学生态气象联合实验室河南郑州450001

综述了陆—气相互作用在观测、机制和模型方面的最新进展,指出现有陆—气相互作用观测研究没有同时考虑陆面生理生态与大气边界层变化对陆—气通量的影响,制约了陆面过程参数化或参数的卫星遥感反演以及陆面过程模式的业务应用。从全面... 详细信息

综述了陆—气相互作用在观测、机制和模型方面的最新进展,指出现有陆—气相互作用观测研究没有同时考虑陆面生理生态与大气边界层变化对陆—气通量的影响,制约了陆面过程参数化或参数的卫星遥感反演以及陆面过程模式的业务应用。从全面认识陆—气相互作用与陆面过程模式发展出发,指出未来需进一步强化陆面生理生态与大气边界层变化对陆—气相互作用的影响研究以及陆面过程模式的业务应用研究,并提出了拟关注的重点任务:①陆—气相互作用的跨界面立体观测;②多源数据在跨界面陆—气相互作用中的应用;③陆面过程模式发展与业务应用。

关键词：陆—气相互作用陆面生理生态大气边界层陆面过程模式

Modeling impacts of East Asian Ocean-Land thermal contrast on spring southwesterly winds and rainfall in eastern china

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chinese Science Bulletin 2009年第16期54卷 4733-4741页

作者： ZHAO Ping JIANG PinPing zhou xiuji ZHU CongWen National meteorological Information Centre Beijing 100081 China state key Laboratory of {2. weather Beijing 100081 China chinese academy of {2. sciences Beijing 100081 China

Using the National Centers for Environmental Prediction–National Center for Atmospheric Research (NCEP–NCAR) reanalysis dataset, the NOAA’s Climate Prediction Center’s merged analysis of precipitation, and the MM5v3 Meso-scale Model, the impacts of surface temperature differences between the East Asian land and its adjacent oceans on spring southwesterly winds and rainfall over eastern china are studied. The modeling results show that the temperature differences exert strong influence on the occurrence of the southwesterly winds and rainfall over southern china and their northward advances. When surface temperature increases over the land and decreases over the oceans, the temperature gradient with a winter feature earlier changes toward the gradient with a summer feature. Both the low-pressure system east of the Tibetan Plateau and the subtropical high-pressure system over the western Pacific strengthen, accompanying with the strengthening of the lower-tropospheric southwesterly winds over eastern china. Accordingly, the upward motion increases over the Yangtze-Huaihe River (YHR) valleys and decreases over southern china, leading to an increase of spring rainfall over the YHR valleys and a decrease over southern china. Thus, the rain belt over eastern china appears over the YHR valleys but not over southern china. Under a weaker condition of the spring thermal contrast, the rain belt does not occur over eastern china. When the spring thermal contrast pronouncedly strengthens, the rain belt over southern china may advance northward into the YHR valleys during spring, though there is no onset of the tropical monsoon over the South china Sea. This forms a rain belt similar to that of the YHR valleys during the summer Meiyu period.

关键词：西南风降雨中国热力海洋东亚建模

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The characteristics and regularities of the climate change over the past millennium in china

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chinese Science Bulletin 2011年第28期56卷 2985-2985页

作者： zhou xiuji state key Laboratory of {2. weather Chinese Academy of Meteorological Sciences Beijing 100081 China

Research on global climate change has been at the frontier of the contemporary sciences. Discussion and debate about climate warming in the recent century has attracted the attention of the world. Debate has focused on whether the greenhouse effect produced by human activities is a major factor responsible for modern climate warming and whether the warming trend will persist in the future.

关键词：全球气候变化中国气候变暖温室效应人类活动

Spatial structure and scale feature of the atmospheric pollution source impact of city agglomeration

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Science china Earth sciences 2005年第Z2期48卷 1-24页

作者： XU Xiangde zhou xiuji SHI Xiaohui state key Laboratory of {2. weather Chinese Academy of Meteorological Sciences Beijing 100081 China State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences Beijing 100081 China State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences Beijing 100081 China

The spatial structure and multi-scale feature of the atmospheric pollution influence domain of beijing and its peripheral areas (a rapidly developed city agglomeration) is dissected and analyzed in this paper on the basis of the atmospheric pollution dynamic-chemical process observation data of the urban building ensemble boundary layer of the beijing City Air Pollution Observation Experiment (BECAPEX) in winter (February) and summer (August) 2.03, and relevant {2. elements and satellite retrieval aerosol optical depth (AOD), etc. comprehensive data with the dynamic-statistical integrated analysis of 'point-surface' spatial structure. Results show that there existed significant difference in the contribution of winter/summer different pollution emission sources to the component character of atmospheric pollution, and the principal component analysis (PCA) results of statistical model also indicate that SO2.and NOx dominated in the component structure of winter aerosol particle; instead, CO and NOxdominated in summer. Surface layer atmospheric dynamic and thermal structures and various pollutant species at the upper boundary of building ensembles at urban different observational sites of beijing in winter and summer showed an 'in-phase' variation and its spatial scale feature of 'influence domain'. The power spectrum analysis (PSA) shows that the period spectrum of winter/summer particle concentration accorded with those of atmospheric wind field: the longer period was dominative in winter, but the shorter period in summer, revealing the impact of the seasonal scale feature of winter/summer atmospheric general circulation on the period of atmospheric pollution variations. It is found that from analyzing urban area thermal heterogeneity that the multi-scale effect of beijing region urban heat island (UHI) was associated with the heterogeneous expansion of tall buildings area. In urban atmospheric dynamical and thermal characteristic spatial structures, the

关键词： atmospheric pollution source, contribution rate, boundary layer structure, multi-scale, backward trajec- tory, correlation vector, climatic effect, interaction of water, soil and atmosphere.

内蒙古克氏针茅草原净生态系统碳交换的物候特征及遥感监测

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应用生态学报 2024年第3期35卷 659-668页

作者：王进周广胜何奇瑾周莉中国农业大学资源与环境学院北京100193 中国气象科学研究院灾害天气国家重点实验室/河北固城农业气象国家野外科学观测研究站北京100081 南京信息工程大学气象灾害预报预警与评估协同创新中心南京210044 中国气象局-中国农业大学农业应对气候变化联合实验室北京100081

为准确遥感监测草原净生态系统碳交换(NEE)物候,利用内蒙古锡林浩特国家气候观象台2.18—2.2.年的涡度相关系统和气象梯度观测系统观测数据,结合2.18年1月1日至2.2.年12.31日的Senti-nel-2.星数据,分析克氏针茅草原NEE及其物候的变化... 详细信息

为准确遥感监测草原净生态系统碳交换(NEE)物候,利用内蒙古锡林浩特国家气候观象台2.18—2.2.年的涡度相关系统和气象梯度观测系统观测数据,结合2.18年1月1日至2.2.年12.31日的Senti-nel-2.星数据,分析克氏针茅草原NEE及其物候的变化规律,并探讨了NEE物候的遥感植被指数及阈值。结果表明:2.18—2.2.年,研究区NEE呈季节性变化,4—10月为碳汇,其他月份为碳源,总体呈碳汇。碳吸收开始日期(SCUP)和结束日期(ECUP)的平均儒略日分别为第95天和第2.9天,碳吸收持续时间平均为165 d。光合有效辐射与日NEE呈极显著负相关,有助于草原生态系统吸收大气中CO_(2.。最佳阈值10%的红边叶绿素指数能够较好地捕捉SCUP,而最佳阈值75%的归一化植被指数则能较好地反映ECUP。研究结果可为草原生态系统碳源汇的遥感监测提供依据。

关键词：克氏针茅草原净生态系统碳交换物候遥感监测内蒙古

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