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An Objective Synoptic Analysis Technique for the Identification of Tropical Cyclone Remote precipitation in China and Its Application

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Journal of Ocean University of China 2025年第1期24卷 13-30页

作者： JIA Li DING Chenchen CONG Chunhua REN Fumin LIU Yanan School of Atmospheric Science Nanjing University of Information Science and TechnologyNanjing 210044China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China Public Meteorological Service Center of CMA Beijing 100081China Shandong Meteorological Bureau Jinan 250031China Laboratory of Cloud-Precipitation Physics and Severe Storms(LACS) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

At present,the identification of tropical cyclone remote precipitation(TRP)requires subjective participation,leading to inconsistent results among different researchers despite adopting the same identification ***,establishing an objective identification method is greatly *** this study,an objective synoptic analysis technique for TRP(OSAT_TRP)is proposed to identify TRP using daily precipitation datasets,historical tropical cyclone(TC)track data,and the ERA5 reanalysis *** method includes three steps:first,independent rain belts are separated,and those that might relate to TCs'remote effects are distinguished according to their distance from the ***,the strong water vapor transport belt from the TC is identified using integrated horizontal water vapor transport(IVT).Third,TRP is distinguished by connecting the first two *** TRP obtained through this method can satisfy three criteria,as follows:1)the precipitation occurs outside the circulation of TCs,2)the precipitation is affected by TCs,and 3)a gap exists between the TRP and TC rain *** diagnosis analysis,compared with subjective TRP results and backward trajectory analyses using HYSPLIT,indicates that OSAT_TRP can distinguish TRP even when multiple TCs in the Northwest Pacific are ***,we applied the OSAT_TRP to select typical TRPs and obtained the synoptic-scale environments of the TRP through composite analysis.

关键词： tropical cyclone remote precipitation objective identification method

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A rapid assessment of MWRI-RM/FY3G brightness temperature

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Atmospheric and Oceanic Science Letters 2024年第3期17卷 42-46页

作者： Wenying He Xinran Xia Shengli Wu Peng Zhang Hongbin Chen Xiang'ao Xia Yuquan Zhou Miao Cai LAGEO Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina School of Hydrology and Water Resources Nanjing University of Information Science&TechnologyNanjingChina National Satellite Meteorological Centure Chinese Meteorological AdministrationBeijingChina College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina Key Laboratory of Cloud-Precipitation Physics and Weather Modification CMABeijingChina

2023年4月发射的FY-3G上搭载17个频率的测雨微波成像仪(MWRI-RM),其业务定标的微波亮温(Tb)数据于2023年10月23日公开发布.本文比对了发布10天的MWRI-RM与全球降水测量(GPM)卫星上的微波成像仪(GMI)相匹配的Tb数据,并借助辐射传输模式... 详细信息

2023年4月发射的FY-3G上搭载17个频率的测雨微波成像仪(MWRI-RM),其业务定标的微波亮温(Tb)数据于2023年10月23日公开发布.本文比对了发布10天的MWRI-RM与全球降水测量(GPM)卫星上的微波成像仪(GMI)相匹配的Tb数据,并借助辐射传输模式进行双差分(DD)交叉定标分析,旨在快速评估新一代MWRI-RM观测数据质量.观测比较表明,MWR1-RM与GMI测量的Tb一致性很好,大多通道的平均偏差(MBE)和均方根误差(RMSE)均小于1K.两种传感器由于观测角度略有不同在水面产生约0.5 K差异.DD分析也展示出MWRI-RM的大多数通道性能与GMI相当接近,尤其是首次启用的高频166 GHz和183 GHz.

关键词： FY3G MWRI-RM GMI 亮度温度双差分方法

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Vertical Structure of Typical Stratiform precipitation Based on Multi-Source Remote Sensing Data

Vertical Structure of Typical Stratiform Precipitation Based...

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Software System and Information Processing (ICSSIP), IEEE International Conference on

作者： Hong Wang Wengang Zhu Jun Wang Key Laboratory for Meteorological Disaster Prevention and Mitigation of Shandong Jinan China Key Laboratory of Cloud-Precipitation Physics and Weather Modification (CPML) CMA Beijing China Shandong Weather Modification Office Jinan China Changdao National Climatology Observatory Changdao China

ISBN: (数字)9798331506131

ISBN: (纸本)9798331506148

To explore the vertical structure of precipitation in eastern China, multi-source remote sensing has been deployed to Jinan, a city in eastern China. Based on the data of K-band micro-rain radar and Ka-band cloud radar, a typical stratiform cloud precipitation experienced by Jinan city in eastern China from 12:00 on April 22, 2023 to 00:00 on April 23, 2023 is analyzed in detail. The results show that: 1) Both the Micro Rain Radar and the cloud radar can observe the bright band at the altitude of about 2.4 km, and the evolution of the bright band with time and height can be clearly observed. 2) The particles are mainly mixed phase in the bright band, and the particles above the bright band is mainly solid, such as snowflakes, while they are mainly liquid below the bright band, such as raindrops. 3) The characteristics of raindrop size distribution below the bright band show that the evaporation process in the early precipitation period is greater than that in the mature period, and the collisional coalescence in the mature period is more active. 4) cloud radar can infer near-ground collisional coalescence and other microphysical processes from the radar reflectivity factor, which is consistent with the evolution of raindrop size distribution of Micro Rain Radar at different heights, so the synchronous observation of radar with different wavelengths can better show the microphysical processes of precipitation.

关键词： Reflectivity Radar remote sensing Rain clouds Urban areas Radar Solids Software systems Spatial resolution Remote sensing

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Isotopic Analysis for Tracing Vertical Growth Trajectories of Hailstones

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Advances in Atmospheric Sciences 2025年第6期42卷 1195-1211页

作者： Xiangyu LIN Haifan ZHANG Xiaofei LI Qinghong ZHANG Andrew HEYMSFIELD Kai BI Chan-Pang NG Chong WU Dianli GONG Department of Atmospheric and Oceanic Sciences School of PhysicsPeking UniversityBeijing 100871China Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity Institute of Earth Surface System and HazardsCollege of Urban and Environmental SciencesNorthwest UniversityXi’an 710127China National Center for Atmospheric Science BoulderColoradoCO 80307United States Field Experiment Base of Cloud and Precipitation Research in North China China Meteorological AdministrationBeijing 101200China State Key Lab of Severe Weather Chinese Academy of Meteorological ScienceBeijing 100081China Weather Modification Office of Shandong Province People’s Government Ji’nan 250051China

The growth trajectory of hailstones within clouds has remained elusive due to the inability to trace them directly,impeding the comprehension of their underlying growth *** study investigated hailstone vertical growth trajectories by detecting the stable isotope signatures(2H and 18O compositions)of different shells in 27 hailstones from 9hailstorms,which allowed us to capture the ambient temperature during hailstone *** vertical growth trajectories were obtained by comparing the isotopic compositions of water condensate in clouds,derived from the Adiabatic Model,with those measured in *** hailstone growth was primarily observed in the–10°C to–30°C temperature layer,the embryo formation height and subsequent growth trajectories significantly varied among *** formed over a wide range of temperatures(–8.7°C to–33.4°C);four originated at temperatures above–15°C and 16originated at temperatures below–20°C,suggesting ice nuclei composed of bioproteins and mineral dust,*** the 27 measured hailstones,3 exhibited minimal vertical movement,16 exhibited a monotonic rise or fall,and the remaining 8 exhibited alternating up-down trajectories;only one experienced“recycling”during up-down *** analysis revealed that similar-sized hailstones from a single storm tended to form at similar heights,whereas those larger than 25 mm in diameter exhibited at least one period of upward *** trajectories derived from isotopic analysis were corroborated by radar hydrometeor observations.

关键词： growth trajectory hailstone hailstorm isotopic analysis radar

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Identifying Supercooled Liquid Water in cloud Based on Airborne Observations: Correlation of cloud Particle Number Concentration with Icing Probability and Proportion of Spherical Particles

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Journal of Meteorological Research 2022年第4期36卷 574-585页

作者： Yuquan ZHOU Can SONG Miao CAI Siyao LIU Yang GAO Rong ZHANG CMA Cloud–Precipitation Physics and Weather Modification Key Laboratory(CPML) Beijing 100081 Weather Modification Center of Henan Province Zhengzhou 450000 College of Global Change and Earth System Science Beijing Normal UniversityBeijing 100875

Identifying supercooled liquid water(SLW)in clouds is critical for weather modification,aviation safety,and atmospheric radiation ***,aircraft identification in the SLW area mostly depends on emprical estimation of cloud particle number concentration(N_(c))in China,and scientific verification and quantitative identification criteria are urgently *** this study,the observations are from the Fast cloud Droplets Probe,Rosemount ice detector(RICE),and cloud Particle Imager(CP_(i))onboard a King Air aircraft during seven flights in 2018 and 2019 over central and eastern *** on this,the correlation among N_(c),the proportion of spherical particles(P_(s)),and the probability of icing(P_(i))in supercooled stratiform and cumulus-stratus clouds is statistically ***,this study proposes a method to identify SLW areas using N_(c) in combination with ambient *** reliability of this method is evaluated through the true skill statistics(TSS)and threat score(TS)*** airborne observations during the seven flights reveal a strong correlation among Nc,P_(s),and P_(i)at the temperature from 0 to−18°*** Nc is greater than a certain threshold of 5 cm^(−3),there is always the SLW,i.e.,P_(i)and P_(s)are *** results demonstrate that the TSS and TS values for Nc=5 cm^(−3)are higher than those for Nc<5 cm^(−3),and a larger Nc threshold(>5 cm^(−3))corresponds to a higher SLW identification hit rate and a higher SLW ***,Nc=5 cm^(−3)can be used as the minimum criterion for identifying the SLW in clouds at temperature lower than 0°*** SLW identification method proposed in this study is especially helpful in common situations where aircraft are equipped with only Nc probes and without the CP_(i)and RICE.

关键词： supercooled liquid water(SLW) icing probability cloud particle shape cloud particle number concentration

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Microphysical characteristics of precipitating cumulus cloud based on airborne Ka-band cloud radar and droplet measurements

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Atmospheric and Oceanic Science Letters 2022年第2期15卷 65-70页

作者： Lei Wei Mengyu Huang Rong Zhang Yuhuan Lü Tuanjie Hou Hengchi Lei Delong Zhao Wei Zhou Yuan Fu Beijing Weather Modification Center BeijingChina Key Laboratory for Cloud Physics of China Meteorological Administration BeijingChina Wuqing Meteorological Observatory of Tianjin TianjinChina Institute of Atmospheric Physics Chinese Academy of SciencesBeijingChina Zhejiang Meteorological Observatory HangzhouChina Beijing Key Laboratory of Cloud Precipitation and Atmospheric Water ResourcesBeijingChina Beijing Meteorological Bureau BeijingChina

Based on cloud-probe data and airborne Ka-band cloud radar data collected in Baoding on 5 August 2018,the microphysical structural characteristics of cumulus(Cu)cloud at the precipitation stage were *** cloud droplets in the Cu cloud were found to be significantly larger than those in stratiform(STF)*** the Cu cloud,most cloud particles were between 7 and 10μm in diameter,while in the STF cloud the majority of cloud particles grew no larger than 2μ*** sensitivity of cloud properties to aerosols varied with *** cloud droplet effective radius showed a negative relationship with the aerosol number concentration(Na)in the cloud planetary boundary layer(PBL)and upper layer above the ***,the cloud droplet concentration(Nc)varied little with decreased Na in the high liquid water content region above 1500 *** Na values of between 300 and 1853 cm-3 were found in the PBL,and the maximum Na was sampled near the surface in August in the Hebei region,which was lower than that in autumn and *** radar reflectivity corresponded to large FCDP(fast cloud droplet probe)particle concentrations and small aerosol particle concentrations,and vice versa for low radar *** updrafts in the Cu cloud increased the peak radius and Nc,and broadened cloud droplet spectrum;lower air temperature was favorable for particle condensational growth and produced larger droplets.

关键词： Airplane observation Microphysical processes Ka-band cloud radar Cumulus

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Recent Enhanced Deep Troposphere-to-Stratosphere Air Mass Transport Accompanying the Weakening Asian Monsoon

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Journal of Meteorological Research 2024年第4期38卷 708-719页

作者： Bin CHEN Jianzhong MA Wei ZHANG Jianchun BIAN Tianliang ZHAO Xiangde XU State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesChina Meteorological AdministrationBeijing100081China Department of Plants Soils and ClimateUtah State UniversityUT84322USA Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological AdministrationNanjing University of Information Science&TechnologyNanjing 210044China

The Asian monsoon(AM) region is a well-known region with prevailing stratosphere–troposphere exchange(STE).However,how the STE across this region changes with the weakening AM remains ***,we particularly diagnose the air mass transport between the planetary boundary layer(PBL) and the stratosphere over the AM region during 1992–2017 using the Lagrangian particle dispersion model FLEXPART based on the ERA-Interim reanalysis *** results show that both the downward and upward deep STEs exhibit a detectable increasing trend,while the latter,namely,the deep troposphere-to-stratosphere transport(DTST),is relatively more *** analysis reveals that the long-term trend of DTST over the AM region could be partly attributed to changes in the Pacific Walker circulation and the air temperature(especially at upper levels).Additionally,it is found that DTST increases markedly over the tropical oceanic regions,while the increasing DTST into the stratosphere can be attributed to the enhanced air masses originated from the PBL over the terrestrial regions,where large amounts of pollutant emissions *** results imply that the influence of the DTST on the chemical composition and the climate of the stratosphere over the AM region is expected to become increasingly important,and is thereby of relevance to climate projection in an evolving climate.

关键词： stratosphere–troposphere exchange(STE) air mass transport deep troposphere-to-stratosphere transport(DTST) Asian monsoon(AM) pollution

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Revisiting the size of nonspherical particles recorded by optical array probes with a new method based on the convex hull

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Atmospheric and Oceanic Science Letters 2022年第3期15卷 1-5页

作者： Rong Zhang Xu Zhou Hongyu Li Hanchao Li Lei Wei Yang Gao Qiang Xia Xiangyu Wang Key Laboratory for Cloud Physics of China Meteorological Administration BeijingChina State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijingChina Weather Modification Centre China Meteorological AdministrationBeijingChina Inner Mongolia Institute of Meteorological Sciences&Inner Mongolia Key Laboratory of Manual Weather Modification HohhotChina Beijing Weather Modification Center BeijingChina China Huayun Meteorological Technology Group Corporation BeijingChina Weather Modification Center in Eastern Inner Mongolia TongliaoChina

In recent years,the cloud Imaging Probe(CIP)and precipitation Imaging Probe(PIP)produced by Droplet Measurement Technologies(DMT)have been introduced by a number of meteorological research and operation centers in *** supporting software provided by DMT,i.e.,PADS(Particle Analysis and Display System),cannot output detailed information on each individual particle,which definitely limits the in-depth utilization of cloud and precipitation particle image data in *** this paper,particle-by-particle information was extracted by decompressing the CIP and PIP original particle image data,based on which a new definition of the dimension for nonspherical particles is proposed by using the area of the convex hull enclosing a particle to obtain the equivalent diameter of a circle with equal *** on the data detected during one flight in Inner Mongolia,the particle size distribution obtained using the new particle size definition and that used by the other four existing definitions are *** results show that the particle number concentration calculated using different particle size definitions can vary by up to an order of *** result obtained based on the new particle size definition is closest to that calculated with the area-equivalent diameter definition.

关键词： cloud and precipitation particles Particle image Particle size Particle size distribution

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cloud Water Resource in North China in 2017 Simulated by the CMA-CPEFS cloud Resolving Model:Validation and Quantification

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Journal of Meteorological Research 2022年第3期36卷 520-538页

作者： Chao TAN Miao CAI Yuquan ZHOU Weiguo LIU Zhijin HU CMA Key Laboratory for Cloud Physics Weather Modification CenterChina Meteorological Administration(CMA)Beijing 100081

Based on the concept of cloud water resource(CWR)and the cloud microphysical scheme developed by the Chinese Academy of Meteorological Sciences(CAMS),a coupled mesoscale and cloud-resolving model system is developed in the study for CWR numerical quantification(CWR-NQ)in North China for *** results show that(1)the model system is stable and capable for performing 1-yr continuous simulation with a water budget error of less than 0.2%,which indicates a good water balance.(2)Compared with the observational data,it is confirmed that the simulating capability of the CWR-NQ approach is decent for the spatial distribution of yearly cumulative precipitation,daily precipitation intensity,yearly average spatial distribution of water vapor.(3)Compared with the CWR diagnostic quantification(CWR-DQ),the results from the CWR-NQ differ mainly in cloud condensation and cloud ***,the deviation of the net condensation(condensation minus evaporation)between the two methods is less than 1%.For other composition variables,such as water vapor advection,surface evaporation,precipitation,cloud condensation,and total atmospheric water substances,the relative differences between the CWR-NQ and the CWR-DQ are less than 5%.(4)The spatiotemporal features of the CWR in North China are also *** positive correlation between water vapor convergence and precipitation on monthly and seasonal scales,and the lag of precipitation relative to water vapor convergence on hourly and daily scales are analyzed in detail,indicating the significance of the state term on hourly and daily *** effects of different spatial scales on the state term,advection term,source-sink term,and total amount are *** is shown that the advective term varies greatly at different spatiotemporal scales,which leads to differences at different spatiotemporal scales in CWR and related characteristic quantities.

关键词： cloud water resource atmospheric moisture budget long-term continuous simulation model validation spatiotemporal characteristics

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Improving Satellite-Retrieved cloud Base Height with Ground-Based cloud Radar Measurements

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Advances in Atmospheric Sciences 2024年第11期41卷 2131-2140页

作者： Zhonghui TAN Ju WANG Jianping GUO Chao LIU Miao ZHANG Shuo MA College of Meteorology and Oceanography National University of Defense TechnologyChangsha 410073China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science&TechnologyNanjing 210044China Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration School of Atmospheric PhysicsNanjing University of Information Science&TechnologyNanjing 210044China National Satellite Meteorological Center(National Center for Space Weather) China Meteorological AdministrationBeijing 100081China

cloud base height(CBH) is a crucial parameter for cloud radiative effect estimates, climate change simulations, and aviation guidance. However, due to the limited information on cloud vertical structures included in passive satellite radiometer observations, few operational satellite CBH products are currently available. This study presents a new method for retrieving CBH from satellite radiometers. The method first uses the combined measurements of satellite radiometers and ground-based cloud radars to develop a lookup table(LUT) of effective cloud water content(ECWC), representing the vertically varying cloud water content. This LUT allows for the conversion of cloud water path to cloud geometric thickness(CGT), enabling the estimation of CBH as the difference between cloud top height and CGT. Detailed comparative analysis of CBH estimates from the state-of-the-art ECWC LUT are conducted against four ground-based millimeter-wave cloud radar(MMCR) measurements, and results show that the mean bias(correlation coefficient) is0.18±1.79 km(0.73), which is lower(higher) than 0.23±2.11 km(0.67) as derived from the combined measurements of satellite radiometers and satellite radar-lidar(i.e., cloud Sat and CALIPSO). Furthermore, the percentages of the CBH biases within 250 m increase by 5% to 10%, which varies by location. This indicates that the CBH estimates from our algorithm are more consistent with ground-based MMCR measurements. Therefore, this algorithm shows great potential for further improvement of the CBH retrievals as ground-based MMCR are being increasingly included in global surface meteorological observing networks, and the improved CBH retrievals will contribute to better cloud radiative effect estimates.

关键词： cloud base height passive radiometer ground-based cloud radar remote sensing

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