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PreciDBPN: A customized deep learning approach for hourly precipitation downscaling in eastern China Atmos. Res. (IF 4.5) Pub Date : 2024-09-25 Hanmeng Xia, Kaicun Wang
Long-term series of high-resolution gridded precipitation datasets are essential for hydrological and meteorological research. Producing high-resolution precipitation data from regional models demands substantial computational resources and labor. Global Reanalyses offer long-term coverage and effectively capture annual and seasonal precipitation patterns. However, they have inadequate resolution and
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Machine-learning downscaling of GPM satellite precipitation products in mountainous regions: A case study in Chongqing Atmos. Res. (IF 4.5) Pub Date : 2024-09-20 Yushi Gan, Yuechen Li, Lihong Wang, Long Zhao, Lei Fan, Haichao Xu, Zhe Yin
High-quality precipitation data are essential for research in hydrology, meteorology and ecology. Nevertheless, in mountainous regions with intricate terrain, the reliability of gridded precipitation data derived from station data interpolation is low due to the limited number of stations caused by the difficulty of station setup. Current satellite precipitation products suffer from low spatial resolution
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Study on the characteristics of urban background ozone pollution based on long-term observations from mountain sites in China during 2015–2022 Atmos. Res. (IF 4.5) Pub Date : 2024-09-18 Wei Zhao, Bo Gao, Junjun Deng, Jiaren Sun, Laiguo Chen, Shaojia Fan
In recent years, Chinese cities have faced persistent O3 pollution challenges. O3 concentrations at urban mountain sites, serving as proxies for urban background O3 levels, can help address data gaps in O3 research in China. This study, for the first time, analyzed O3 data from ten urban mountain sites during 2015–2022 using statistical methods like the Mann-Kendall test, Theil-Sen slope estimation
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Monitoring aerosol optical depth during the Arctic night: Instrument development and first results Atmos. Res. (IF 4.5) Pub Date : 2024-09-18 Mauro Mazzola, Robert S. Stone, Natalia Kouremeti, Vito Vitale, Julian Gröbner, Kerstin Stebel, Georg H. Hansen, Thomas C. Stone, Christoph Ritter, Simone Pulimeno
Moon-photometric measurements were made at two locations in the Arctic during winter nights using two different modified Sun photometers; a Carter Scott SP02 and a Precision Filter Radiometer (PFR) developed at PMOD/WRC. Values of aerosol optical depth (AOD) were derived from spectral irradiance measurements made at four wavelengths for each of the devices. The SP02 was located near Barrow, Alaska
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Remote Interactions between tropical cyclones: The case of Hurricane Michael and Leslie's high predictability uncertainty Atmos. Res. (IF 4.5) Pub Date : 2024-09-18 M. López-Reyes, J.J. González-Alemán, C. Calvo-Sancho, P. Bolgiani, M. Sastre, M.L. Martín
The study explores Hurricane Michael's impact on Hurricane Leslie's trajectory predictability using ECMWF and NCEP ensemble systems. A clustering method focused on tropical cyclones is used to identify potential paths for Leslie: Cluster 1 accurately predicted Leslie's direction towards the Iberian Peninsula, whereas Clusters 2 and 3 indicated a southern recurve near the Canary Islands. Analysis of
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Amplified precipitation extremes since 21st century in the Beijing-Tianjin-Hebei urban agglomeration, China Atmos. Res. (IF 4.5) Pub Date : 2024-09-16 Yujie Wang, Haoyu Wang, Lianchun Song
The Beijing-Tianjin-Hebei urban agglomeration(BTH) has successively witnessed the extraordinary precipitation extremes (PEs) with huge economic losses and death-toll in the recent decade. To timely and comprehensively understand the PEs in the urban agglomeration, we investigate the characteristic and mechanism of PEs variation based on six extreme precipitation indices (EPIs) including maximum daily
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Application of deep learning in summer climate prediction over northwestern China based on CWRF model Atmos. Res. (IF 4.5) Pub Date : 2024-09-14 Qian Li, Yan Wang, Shuang Wang, Falei Xu, Can Zhao, Zhiqiang Gong
This study analyzes the performance of the Climate–Weather Research and Forecasting (CWRF) model in predicting the summer temperature and precipitation in northwestern China (NWC) for the 1991–2021 period. It also examines the improvements in prediction resulting from the implementation of convolutional neural network (CNN) and long short-term memory (LSTM) downscaling methods. The results indicate
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Vertical structures of typhoon cloud microphysical and radiative features associated with the precipitation type over the western North Pacific Atmos. Res. (IF 4.5) Pub Date : 2024-09-13 Yafei Yan, Jianguo Tan, Ming Ying, Yimin Liu, Yao Tang
Intensity of different precipitation types (convective, stratiform and shallow) and associated cloud vertical microphysical and radiative heating features are analyzed considering typhoon development, maturity, and decaying stages over the western North Pacific using the CloudSat Tropical Cyclone and China Meteorological Administration tropical cyclone best-track datasets from 2 June 2006 to 31 December
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Research on simulation and validation methods of aerosol radiative forcing on the Tibetan Plateau based on satellite and ground-based remote sensing observations over the past 20 years Atmos. Res. (IF 4.5) Pub Date : 2024-09-12 Lingxiao Wu, Nima Ciren, Dui Wang, Huimei Meng, Ming Li, Yinan Wang, Tianlu Chen
Atmospheric radiative changes induced by aerosol radiative forcing are the most uncertain factors in climate change, affecting a comprehensive understanding of aerosol's role in the climate system and ecosystem, with current research mainly focused on densely populated and heavily polluted regions. This study utilizes satellite and ground-based remote sensing data to establish a multi-source data processing
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How does greening affect the surface water budget in the Loess Plateau? Atmos. Res. (IF 4.5) Pub Date : 2024-09-12 Yan Yan, Jianping Tang, Shuyu Wang
Significant vegetation increase in the Loess Plateau (LP) of China could strongly affect the surface water budget. Through the WRF model with the Water Vapor Tracer (WVT) method tracking moisture within the LP, this study conducted three sets of experiments from 1999 to 2018 with GLASS Fractional Vegetation Cover (FVC) data. The results indicate that vegetation has a critical role in partitioning evapotranspiration
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Biennial variability of boreal spring surface air temperature over India Atmos. Res. (IF 4.5) Pub Date : 2024-09-12 Kethavath Lakshma, Gopinadh Konda, J.S. Chowdary, C. Gnanaseelan
In this study, we report significant biennial variability or oscillation (BO) in the boreal spring (March–May) Surface Air Temperature (SAT) over India and unravelled the causative mechanisms. The positive phase of the BO exhibit significant seasonal warming over India, whereas seasonal cooling is observed during the negative phase of BO. Heat wave days are more during the positive phase of BO compared
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Variations of summer extreme high temperatures over the Indochina Peninsula: Roles of oceanic systems Atmos. Res. (IF 4.5) Pub Date : 2024-09-12 Changyu Chu, Yi Fan, Peilong Yu, Yong Liu, Sirui Chen, Botao Zhou
Utilizing the reanalysis data and model simulations, we explore the interannual variations of extreme high temperatures over the Indochina Peninsula during 1960–2022, as well as their responses to critical oceanic systems and corresponding mechanisms. Given the intricate interactions among oceanic regions, this study employs the Generalized Equilibrium Feedback Analysis method to extract the atmospheric
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Extreme snowfall variations in the Southeastern Tibetan Plateau under warming climate Atmos. Res. (IF 4.5) Pub Date : 2024-09-11 Chaoyue Li, Jiansheng Hao, Guotao Zhang, Yan Wang, Haiyan Fang, Weipeng Hou, Peng Cui
Snowfall is a critical component of the Earth system and an important indicator and amplifier of climate change. Climate warming is reducing the seasonal snowpack globally, which could have catastrophic consequences for the regions in high dependence on snow for water recharge. However, the climate influences on extreme snowfall events, which significantly impact humans, are still poorly understood
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Storylines of projected summer warming in Iberia using atmospheric circulation, soil moisture and sea surface temperature as drivers of uncertainty Atmos. Res. (IF 4.5) Pub Date : 2024-09-11 Jose M. Garrido-Perez, David Barriopedro, Ricardo M. Trigo, Pedro M.M. Soares, Giuseppe Zappa, M. Carmen Álvarez-Castro, Ricardo García-Herrera
This study explores the uncertainty of future summer warming over Iberia using storylines constructed from climate model simulations of the Climate Model Intercomparison Project Phase 6. Unlike prior storyline approaches focusing on remote drivers and global teleconnections of atmospheric circulation, we use regional factors that directly influence summer temperatures: ridging activity, soil moisture
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An extension to ensemble forecast of conditional nonlinear optimal perturbation considering nonlinear interaction between initial and model parametric uncertainties Atmos. Res. (IF 4.5) Pub Date : 2024-09-10 Bin Mu, Zi-Jun Zhao, Shi-Jin Yuan, Xing-Rong Chen, Bo Qin, Guo-Kun Dai
Initial and model uncertainties are the main sources of forecast errors, making the single and deterministic forecasts unreliable. To estimate these uncertainties, a growing consensus shifts towards ensemble forecasting, aiming to provide the probability density distribution of the atmosphere. However, current ensemble methods either focus on single-source uncertainties or employ a simple superposition
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Unravelling the impacts of stratospheric intrusions on near-surface ozone during the springtime ozone pollution episodes in Lhasa, China Atmos. Res. (IF 4.5) Pub Date : 2024-09-10 Jinxi Hua, Yuanxun Zhang, Jiwei Chen, Yongjie Shang, Xiaoxia Hu, Benjamin de Foy, Ishaq Dimeji Sulaymon, Yizhang Zhang, Zheng Wu
While air pollution due to fine particulate matter (PM2.5) has been effectively controlled in China; the photochemical pollution characterized by elevated ozone (O3) has emerged as a major concern for air quality improvement. Except for ozone, Lhasa is one of the cleanest cities in China with the lowest annual PM2.5 concentration in 2017. The levels of major air pollutants in Lhasa are much lower than
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Dominant modes of interannual variability in spring compound dry and hot events over Northern Asia and the possible mechanisms Atmos. Res. (IF 4.5) Pub Date : 2024-09-10 Jialing Wang, Jianqi Sun, Haixu Hong, Huijun Wang
In this study, spatial and temporal variations of spring compound dry and hot events (CDHEs) over northern Asia (NA) during 1950–2020 and the related possible mechanisms are investigated on the interannual timescale. The standardized compound event indicator (SCEI) is used to represent compound dry and hot conditions over NA, which is validated by the observed summer case of CDHEs over western Russia
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PM2.5 episodes in northern Taiwan under southerly winds in late winter Atmos. Res. (IF 4.5) Pub Date : 2024-09-10 Ming-Tung Chuang, Charles C.-K. Chou, Chuan-Yao Lin, Ja-Huai Lee, Wei-Che Lin, Meng-Hsuan Li, Shyh-Wei Chen, Shu-Hao Chang
When northern Taiwan is influenced locally, PM events occur in specific conditions. If it is also affected by long-range transport from mainland China in the northwest, the probability of these PM events increases. The current study applies WRF/CMAQ to study such case but focus on the local. From April 7 to 9, 2019, the Pacific high pressure extended westward, causing the prevailing weak southerly
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Impact of anthropogenic and natural constituents on particulate matter in oasis cities on the southern margin of the Taklimakan Desert based on MERRA-2 and multi-site ground observation Atmos. Res. (IF 4.5) Pub Date : 2024-09-10 Hao Yu, Jing Wang, Chunmei Geng, Wen Yang, Xinhua Wang, Baohui Yin, Chao Gu, Shuang Gao, Li Chen, Zhipeng Bai
Dust storms are associated with large amounts of particulate matter (PM) that can have adverse effects on health and the environment. The contribution of natural dust to atmospheric PM levels represents a scientific challenge, especially in areas with close proximity to dust sources. To improve our knowledge in this area, we collected 300 PM filter-samples across five oasis cities on the southern edge
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Impacts of urbanization on urban-rural VPD disparities across different subregions in China: A quantitative analysis based on station-pairing and partial differential methods Atmos. Res. (IF 4.5) Pub Date : 2024-09-08 Siqi Gong, Dunxian She, Jun Xia, Tianyue Wang
The climatic disparities between urban cores and surrounding rural areas have become increasingly pronounced due to rapid urbanization. The vapor pressure deficit (VPD) serves as a critical meteorological indicator reflecting atmospheric aridity, and identifying the contributions of urban and rural climate factors on the urban-rural VPD disparities plays an important role in understanding urban climate
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Study of low-level wind shear at a Qinghai-Tibetan Plateau airport Atmos. Res. (IF 4.5) Pub Date : 2024-09-07 Xuan Huang, Jiafeng Zheng, Aimei Shao, Dongbei Xu, Weidong Tian, Jianjie Li
The Qinghai-Tibetan Plateau (QTP) is recognized as the world's largest and highest plateau, characterized by intricate topography and underlying surfaces. Within this region, volatile meteorological conditions and severe synoptic systems, including thunderstorms, turbulence, sandstorms, and notably low-level wind shear (LLWS), present safety hazards to aviation operations. Therefore, a comprehensive
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Contraction of the radius of maximum symmetric rotational kinetic energy during the intensification of Tropical Cyclone Khanun (2017) Atmos. Res. (IF 4.5) Pub Date : 2024-09-07 Yishe Shi, Xiaofan Li, Xinyong Shen
Tropical cyclone (TC) Khanun in 2017 was simulated in this study by the Weather Research and Forecasting (WRF) model. The observation-validated simulation data were used to examine how asymmetric rotational and environmental flows played the roles in determining the contraction of the radius of maximum kinetic energy of symmetric rotational flow (). The radius of maximum was contracted rapidly before
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A feasibility study of the cosine analysis constraint method for optimizing initial perturbations of convective-scale ensemble prediction Atmos. Res. (IF 4.5) Pub Date : 2024-09-06 Qiuping Wang, Lu Sun, Xulin Ma, Jing Chen
To improve forecast skill of extreme weather events, it is of primary importance to construct accurate initial conditions for a convective-scale ensemble prediction system (EPS). The traditional initial perturbation schemes, e.g., dynamic downscaling, fail to capture the amplitude or structure of convective-scale forecast errors accurately, especially near steep terrain or meso- and small-scale systems
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On the fidelity of high-resolution numerical weather forecasts of contrail-favorable conditions Atmos. Res. (IF 4.5) Pub Date : 2024-09-05 Gregory Thompson, Chloé Scholzen, Scott O'Donoghue, Max Haughton, Roderic L. Jones, Adam Durant, Conor Farrington
The potential climate-warming impact from aircraft contrails may be similar in magnitude to the direct effect from carbon dioxide emissions across all aviation. The warming impact may be mitigated through pre-tactical flight trajectory optimization to avoid ice supersaturation regions (ISSRs) while also considering aircraft performance and CO emissions. The ability to perform such deviations depends
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Anthropogenic forcing decreases the probability of the 2020 Yangtze River extreme flood and future risk Atmos. Res. (IF 4.5) Pub Date : 2024-09-05 Xiao Li, Liping Zhang, Gangsheng Wang, Hui Cao, Hairong Zhang, Benjun Jia, Zhiling Zhou, Lina Liu, Lu Zhang
The Yangtze River basin experienced extreme flooding during the summer of 2020, leading to widespread impact and significant economic losses. However, there is a lack of specific and quantitative anthropogenic attribution analysis. Here, we used the VIC model and the Risk Ratio framework to isolate the contributions of two anthropogenic (ANT) forcings, aka greenhouse gas (GHG) and aerosol (AER), to
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Seasonal characteristics of raindrop size distribution and implication for radar rainfall retrievals in Metro Manila, Philippines Atmos. Res. (IF 4.5) Pub Date : 2024-09-04 Larry Ger B. Aragon, Marco Polo A. Ibañez, Raymond C. Ordinario, James Bernard B. Simpas, Maria Obiminda L. Cambaliza, Julie Mae B. Dado, Joel T. Maquiling, Elizabeth A. Reid
This study presents the first comprehensive analysis of the seasonal characteristics of raindrop size distribution (DSD) in Metro Manila, Philippines, using two years of measurements (2018–2020) from the PARSIVEL disdrometer. Seasonal properties of DSD for both stratiform and convective rain types were examined during the Southwest Monsoon (SWM; June–September), Northeast Monsoon (NEM; October–February)
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Geostatistical modeling of the rainfall patterns and monthly multiscale characterization of drought in the South Coast of the Northeast Brazilian via Standardized Precipitation Index Atmos. Res. (IF 4.5) Pub Date : 2024-09-04 Marcos Vinícius da Silva, Jhon Lennon Bezerra da Silva, Maria Beatriz Ferreira, Lizandra de Barros de Sousa, Abelardo Antônio de Assunção Montenegro, Jorge Manuel Guieiro Pereira Isidoro, Héliton Pandorfi, José Francisco de Oliveira-Júnior, Helena Maria Neto Paixão Vazquez Fernandez, Fernando Miguel Granja-Martins, Alexandre Maniçoba da Rosa Ferraz Jardim, Thieres George Freire da Silva, Ada Liz Coronel
Variations in rainfall patterns in the Northeast region of Brazil (NEB) are high and multiscalar, increasing susceptibility to extreme drought and/or flood events. The objective of this study was to characterize rainfall patterns and monthly dry-wet periods using the Standardized Precipitation Index (SPI) from 1990 to 2019 in the South Coast of NEB, utilizing geostatistical interpolation methods. The
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Source apportionment of PM2.5 episodes in the Taichung metropolitan area, Taiwan Atmos. Res. (IF 4.5) Pub Date : 2024-09-03 Ming-Tung Chuang, Charles C.-K. Chou, Chuan-Yao Lin, Wei-Che Lin, Ja-Huai Lee, Meng-Hsuan Li, Wei-Nai Chen, Chih-Chung Chang, Chian-Yi Liu, Yi-Chun Chen
To analyze the physicochemical mechanisms affecting the variation in fine suspended particulate matter (PM) concentrations in Taichung City, the largest city in central Taiwan (the second largest city in Taiwan), during a high-pollution event from November 3 to 6, 2021, we applied the sulfur tracking method (STM) and integrated source apportionment method (ISAM) of the WRF/CMAQ model to simulate the
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Atmospheric circulation anomalies related to the winter PM2.5 mass concentration rapid decline cases in Beijing, China Atmos. Res. (IF 4.5) Pub Date : 2024-09-03 Yuanliurui Ren, Wei Chen, Bo Pang, Riyu Lu
In this study, we investigate the atmospheric circulation anomalies related to the PM2.5 mass concentration rapid decline cases in Beijing during winter when the PM2.5 concentration is the highest. From 2014 to 2021, 66 PM2.5 concentration rapid decline days (RDDs) are identified by considering the 90 % thresholds of the difference of PM2.5 mass concentration between two adjacent days. The composite
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An improved method for developing the precipitable water vapor vertical correction global grid model Atmos. Res. (IF 4.5) Pub Date : 2024-09-03 Haojun Li, Ge Zhu, Liangke Huang, Zhixiang Mo, Qi Kang
Precipitable Water Vapor (PWV) is a crucial parameter in climate research. However, obtaining high precision PWV data remains a problem. Discrepancies in water vapor elevation data from diverse observation sources pose challenges, emphasizing the need for precise vertical correction. In this paper, we proposed the precipitable water vapor model with systematic difference correction by using ERA5 (the
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Potential cloud precipitation capacity in typical regions over China Atmos. Res. (IF 4.5) Pub Date : 2024-09-02 Shuying Mo, Pengguo Zhao, Chuanfeng Zhao, Yunjun Zhou
Based on the CLoud, Albedo and RAdiation dataset, AVHRR-based, version 2 (CLARA-A2), Tropical Rainfall Measuring Mission 3B43 (TRMM-3B43), and European Centre for Medium-Range Weather Forecasts Reanalysis v5 (ERA5) reanalysis data, the potential cloud precipitation capacity (PCPA) of typical regions in China is compared, and the relationship between impact factors and PCPA is discussed. Results have
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Sensitivity analysis of snow depth and surface air temperature to various WRF/Noah-MP model configurations in Central Europe Atmos. Res. (IF 4.5) Pub Date : 2024-08-30 Ákos János Varga, Hajnalka Breuer
This study addresses snow depth overestimation and temperature underestimation in the WRF/Noah-MP regional climate model by producing eight sensitivity simulations at a 10 km grid spacing for the 2001–2006 period, driven by the ERA5 reanalysis. The experiments differ either in the parameterization of snow-related processes within the Noah-MP land surface model, the physical parameterization schemes
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Evolution characteristics and mechanism of meso-γ-scale vortex in an atypical bow echo in the North China Plain Atmos. Res. (IF 4.5) Pub Date : 2024-08-30 Changyi Xu, Lina Zhang, Xian Xiao
On June 25, 2020, an atypical bow echo (ATBE) accompanied by a meso-γ-scale vortex (MV) incurred the strongest gust (41.4 m s) recorded since 1957 in the North China Plain. In this article, we investigate the evolution characteristics of MV and its mechanism for the extreme wind by using the observation data of Doppler weather radar and automatic weather stations as well as the four-dimensional Variational
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Synoptic controls on warm-season O3 pollution in eastern China: A focus on O3-NOx-VOC chemistry Atmos. Res. (IF 4.5) Pub Date : 2024-08-30 Z.H. Liao, X.C. Jia, Y.L. Qiu, J.N. Quan, Y.B. Pan, P.K. Ma, Z.G. Cheng, Q.Q. Wang
The design of emission abatement measures to effectively reduce ozone (O) pollution is highly complex due to non-linear chemistry, multi-source precursor emissions, and regional-scale transport. All these processes also depend on the synoptic circulation conditions. This study classified large-scale circulations to explore the synoptic controls on surface O pollution over eastern China (EC) during
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Interpretable machine learning tools to analyze PM2.5 sensor network data so as to quantify local source impacts and long-range transport Atmos. Res. (IF 4.5) Pub Date : 2024-08-30 Benjamin de Foy, Ross Edwards, Khaled Shaifullah Joy, Shahid Uz Zaman, Abdus Salam, James J. Schauer
Sensor networks provide spatially resolved information about the time variation of concentrations in urban areas around the world. With relatively simple improvements to the control of the temperature and humidity of incoming air, and with proper quality assurance and calibration protocols, a low cost monitor was developed that provides measurements that were highly correlated with a reference monitor
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Attachment processes of negative flashes with multiple return strokes to a tall tower observed at close distances Atmos. Res. (IF 4.5) Pub Date : 2024-08-30 Yan Gao, Mingli Chen, Zilong Qin, Zongxu Qiu, Shaoyang Wang, Ge Zhang, Qi Qi, Ya-ping Du
Two downward negative flashes (F1612 & F1613) with multiple return strokes struck to the 356-m Shenzhen Tower were analyzed. The high-speed camera captured upward positive connecting leaders (UCL) for the first strokes of both flashes and two subsequent strokes of F1612. The observations also show that none of the downward negative leader (DNL) completely propagated to the tower tip before the occurrence
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Spatiotemporal characteristics of mesoscale eddies in the South China Sea and the influence mechanism of Eddy Kinetic Energy Atmos. Res. (IF 4.5) Pub Date : 2024-08-30 Bowen Fan, Zhiliang Qin, Xueyi Wang, Ruotong Li
This paper uses 28 years of satellite altimeter fusion data from 1993 to 2020 to identify and track the mesoscale eddies in the South China Sea based on the Sea Level Anomaly (SLA) closed contour method, with the goal of improving our overall understanding of mesoscale eddy activities in the South China Sea and further investigating the ocean dynamic processes in the region, so as to provide fundamental
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Relationship between interannual variability of the north edge of the East Asian summer monsoon and extreme precipitation in North China Atmos. Res. (IF 4.5) Pub Date : 2024-08-28 Yuanyuan Zou, Yunting Qiao, Ailan Lin, Ruidan Chen
The north edge of the East Asian summer monsoon (EASM) is defined by using the isoline with average total column water vapor (TCWV) equal to 25 mm, and the relationship between the north edge of the EASM and summer extreme precipitation in North China (NC) from 1961 to 2020 is discussed. Self-Organizing Maps (SOM) method is used to cluster extreme precipitation in the abnormal years of the north edge
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On the local available energy budget of an idealized tropical cyclone Atmos. Res. (IF 4.5) Pub Date : 2024-08-28 Hanyan Wu, Jun Peng, Yudi Liu, Lifeng Zhang, Zongheng Li, Wei Zhang
Exploring the links between moist processes, convection, and intensification in modeled tropical cyclones (TCs) remains an important object in the TC internal dynamics. In this study, the full life cycle of an idealized TC is diagnosed by a local moist available energy budget. In general, the diabatic term in available potential energy (APE) mainly from the microphysical processes dominates the rapid
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Numerical simulation of reversal point dynamics in intracloud lightning: Back-and-forth promoting effect Atmos. Res. (IF 4.5) Pub Date : 2024-08-28 D.I. Iudin, A.A. Syssoev, F.D. Iudin, A.A. Emelyanov, I.Yu. Zhavoronkov, E.Yu. Prudnikova
Lightning is a self-developing charge transport system that exhibits fundamental manifestations of the macro-scale polarity asymmetry. This asymmetry is tightly connected with peculiarities of the reversal point (the point of zero leader sheath charge or, alternatively, a site where the lightning channel potential coincides with the intracloud one) movement along the leader growth direction. The study
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Synoptic conditions linked to different Eurasian blockings modulate the anomalous surface wind speed over China Atmos. Res. (IF 4.5) Pub Date : 2024-08-28 Zhengtai Zhang, Tian Xian, Shun Qin
Understanding the impact of various weather systems on surface wind speed (SWS) holds immense importance in enhancing the efficiency of wind power generation. Among the many systems that affect regional weather patterns, atmospheric blocking stands out as a key influencer. Here, we explored the influence of winter blocking in Eurasia on SWS changes over China. We found that the majority of blockings
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Atmospheric dynamics and fire-induced phenomena: Insights from a comprehensive analysis of the Sertã wildfire event Atmos. Res. (IF 4.5) Pub Date : 2024-08-24 I.C. Menezes, D. Lopes, A.P. Fernandes, C. Borrego, D.X. Viegas, A.I. Miranda
The Sertã wildfire started on October 15th, 2017, in a mountainous area in central Portugal, on the hottest day of an exceptionally dry month compared to the previous two decades. This dry spell was attributed to a persistent heatwave from October 1st to 16th, which impacted most of mainland Portugal. Due to the critical weather and vegetation conditions, the fire was very intense, generating a thermal
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Using the space-time evolution spectrum to investigate the transmission characteristics of lightning return stroke current Atmos. Res. (IF 4.5) Pub Date : 2024-08-24 Fan Zhang, Hong Deng, Ping Yuan, Tingting An, Lizhen Yuan, Liwen Xu
Exploring the physical characteristics of lightning discharge channels based on spectrum can help to reveal the microscopic mechanism of the discharge process and provide a theoretical basis for lightning protection research. According to the spectra of six cloud-to-ground lightning return stroke processes and plasma conduction theory, we investigated the evolution of the total intensity of ionic and
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Impacts of the all-sky assimilation of FY-3D and FY-3E MWHS-2 radiances on analyses and forecasts of Typhoon Muifa (2022) Atmos. Res. (IF 4.5) Pub Date : 2024-08-24 Dongmei Xu, Lizhen Huang, JinZhong Min, Lipeng Jiang, Feifei Shen, Yonghui Lei
The newly launched Fengyun-3E (FY-3E) satellite in the early morning contributes to forming a complete three-orbit observation system, comprehensively improving the spatial coverage of satellite data. This study highlights the importance of applying the Microwave Humidity Sounder-II (MWHS-2) data from the FY-3E satellite by exploring the impact of jointly assimilating FY-3D and FY-3E MWHS-2 data under
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Investigation on the 2018 prolonged freezing event in South China using the WRF model at convection-permitting resolution: Model performance and sensitivity analysis of physical parameterizations Atmos. Res. (IF 4.5) Pub Date : 2024-08-24 Entao Yu, Lili Song, Binglan Wang, Ying Li, Xia Chen, Dong Chen, Xiashu Su
The coincidence of extreme cold, precipitation, and freezing weather is one of the most significant natural disasters in winter, with extensive impacts on public transportation, the energy industry, and the ecological landscape. Despite the importance of such events, comprehensive analyses of the performance of cutting-edge numerical weather prediction models at convection-permitting scales remain
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Vertical distribution and transport characteristics of ozone pollution based on lidar observation network and data assimilation over the Pearl River Delta, China Atmos. Res. (IF 4.5) Pub Date : 2024-08-24 Ying Pan, Yan Xiang, Chenglei Pei, Lihui Lv, Zhenyi Chen, Wenqing Liu, Tianshu Zhang
In recent years, China has made certain progresses regarding the monitoring of ozone (O3) pollution. However, a comprehensive understanding of the three-dimensional distribution and evolutionary characteristics of O3 is still relatively lacking. This study analyzed an O3 pollution episode in the Pearl River Delta during September to October 2019 using data from five O3 lidars and air pollution monitoring
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Improved WRF simulation of surface temperature and urban heat island intensity over Metro Manila, Philippines Atmos. Res. (IF 4.5) Pub Date : 2024-08-22 Alyssa Gewell A. Llorin, Lyndon Mark P. Olaguera, Faye Abigail T. Cruz, Jose Ramon T. Villarin
Accurate representation of the land use/land cover (LULC) in the Weather Research and Forecasting (WRF) model has been shown to be crucial for improved simulation of surface variables and urban heat island (UHI) phenomenon. In this study, a ground truthed LULC dataset over Metro Manila (MM) was integrated in the WRF model to assess and quantify the relative contributions of using an updated land use/land
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A newly integrated model for synthesizing multiple external forcing signals to predict the ridge line of the western North Pacific subtropical high in summer Atmos. Res. (IF 4.5) Pub Date : 2024-08-22 Deqian Li, Shujuan Hu, Zihan Hao, Jingjing Zhang, Bingqian Zhou, Jianjun Peng, Kai Wang
The western North Pacific subtropical high (WNPSH) is a critical atmospheric circulation system influencing weather and climate patterns in eastern China. Accurately predicting its activity is essential for anticipating and managing natural disasters such as droughts and floods in the region. In this study, we employ the decision tree (DT) as the fundamental model and devise a compatible framework
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Simulation of a cold spell in Guangdong-Hong Kong-Macao Greater Bay Area with WRF: Sensitivity to PBL schemes Atmos. Res. (IF 4.5) Pub Date : 2024-08-20 Rui Xin, Xian-Xiang Li, Yu Du, Minghua Li, Lup Wai Chew
The selection of the planetary boundary layer (PBL) parameterisation schemes is crucial for the simulation of local meteorology, especially under extreme weather events. A suitable PBL scheme is one of the key conditions to accurately reproduce the real weather conditions. In this study, the performance of all the three available PBL schemes that can be coupled with the multi-layer urban canopy model
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Diurnal cycles of rain storms over South China during the presummer rainy season Atmos. Res. (IF 4.5) Pub Date : 2024-08-17 Xiaoye Fan, Banghai Wu, Yu Wang, Jing Xi
The variation characteristics of rain storms (RSs) are closely related to complex internal physical processes and external dynamic and thermodynamic conditions. Using a 17-year observational rainfall dataset from the Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar (PR), the diurnal cycles of various RS characteristics and their responses to the South China Sea Summer Monsoon (SCSSM)
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Moisture dynamic processes of the westward propagation of quasi-biweekly oscillation in Asian tropical summer monsoon rainfall Atmos. Res. (IF 4.5) Pub Date : 2024-08-17 Weizhen Chen, Wei Wei, Song Yang
The quasi-biweekly oscillation (QBWO) is an important component of tropical monsoon variations. In this study, the QBWO rainfall demonstrates a westward propagation across the tropical Asian monsoon region, originating from the western North Pacific, passing through the South China Sea and the Bay of Bengal, and ultimately reaching the northwestern Indian Peninsula. Notably, the rainfall anomalies
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Raindrop size distribution (DSD) retrieval from polarimetric radar observations using neural networks Atmos. Res. (IF 4.5) Pub Date : 2024-08-14 Jingxuan Zhu, Qiang Dai, Yuanyuan Xiao, Shaonan Zhu, Lu Zhuo, Jun Zhang, Dawei Han
As a key component of rainfall estimation, the understanding of raindrop size distribution (DSD) is a long-standing goal in meteorology and hydrology. Given that weather radar can observe the precipitation microphysics over large spatial and temporal scales, it has been broadly applied in DSD estimation. Traditional polynomial regression algorithms that correlate DSD parameters and radar signatures
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High O3 pollution initiated by cold front passage over Pearl River Estuary Atmos. Res. (IF 4.5) Pub Date : 2024-08-13 Bing Wu, Qian Liu, Zhenhao Ling, Guizhen Fang, Liqing Wu, Xuemei Wang, Yee Jun Tham
The influence of cold fronts on the formation of ozone (O3) pollution, particularly the contributions of physical and chemical processes to O3 abundance during the passage of cold fronts in winter over the Pearl River Estuary (PRE) region was still unclear. This study provided an in-depth analysis on the occurrence of high O3 pollution based on data from field measurements and simulation of a chemical
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On the association of Pacific Decadal Oscillation with the interdecadal variability in Asian-Pacific Oscillation Atmos. Res. (IF 4.5) Pub Date : 2024-08-13 Peilin Li, Botao Zhou, Dapeng Zhang, Yanyan Huang, Wenxin Xie, Ziyi Song, Yujia Liu
The Asian-Pacific Oscillation (APO), featuring a seesaw pattern in the upper-tropospheric temperatures between Asia and the North Pacific, plays profound roles in the Northern Hemispheric climate anomalies. So, its variability and associated physical mechanisms are of great interest. Although progress has been achieved for the APO variability at the interannual time scale, the understanding of its
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Impact of Atmospheric River and Local Topography on “21·7” Extremely Heavy Rainfall in Henan Province, China Atmos. Res. (IF 4.5) Pub Date : 2024-08-13 Zhiwei Zhang, Jingjing Chen, Yunying Li, Xiaoxia Fu, Yamei Ding
An extremely heavy rainfall occurred in Henan Province, China, from July 19th to 21st in 2021, with large precipitation, long duration and wide precipitation area. Impact of water vapor transportation from atmospheric river (AR) on the rainfall was studied through reanalysis data and weather research and forecasting (WRF) model. Precipitation reached over 600 mm around Mount Song, which lasted for
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Bias correction of the hourly satellite precipitation product using machine learning methods enhanced with high-resolution WRF meteorological simulations Atmos. Res. (IF 4.5) Pub Date : 2024-08-13 Nan Yao, Jinyin Ye, Shuai Wang, Shuai Yang, Yang Lu, Hongliang Zhang, Xiaoying Yang
Accurate precipitation data are crucial in atmospheric and hydrological studies, especially for water resource management and disaster early warning. Satellite precipitation product (SPP) with high spatiotemporal resolution has been regarded as a valuable alternative precipitation source to ground observations. However, the hourly SPP generally performs poorly compared to daily SPP, thereby bias correction
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Drivers of long-term changes in summer compound hot extremes in China: Climate change, urbanization, and vegetation greening Atmos. Res. (IF 4.5) Pub Date : 2024-08-13 Peng Ji, Xing Yuan, Feng Ma, Qibo Xu
Induced by numerous environmental and anthropogenic factors, the frequency of compound hot extremes (CoHot) is increasing globally. However, there is a lack of a comprehensive understanding of the relative importance of different factors in the change of CoHot, as most studies focused solely on individual factors. We systematically attribute the long-term trends of summertime CoHot in China to 24 factors
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Impact of cloud properties and aerosols on the spatial distribution of Indian summer monsoon rainfall: A case study Atmos. Res. (IF 4.5) Pub Date : 2024-08-13 Moumita Bhowmik, Rituparna Chowdhury, Anupam Hazra
Quantitative seasonal Indian summer monsoon (ISM) rainfall forecasting has been a challenge for the climate models as it is sensitive to cloud properties, which are modulated by large-scale dynamics. Proper understanding of the role of dynamics, aerosols, and cloud microphysical processes is important for the precipitation calculation in dynamical models. The all-India averaged seasonal ISM rainfall
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A multi-sensor drought index for improved agricultural drought monitoring and risk assessment in the heterogeneous landscapes of the China–Pakistan Economic Corridor (CPEC) Atmos. Res. (IF 4.5) Pub Date : 2024-08-12 Muhammad Ismail, Yi Li, Ben Niu, Mubashir Ali Ghaffar, Muhammad Amjad Saleem, Kadambot H.M. Siddique
Droughts cause significant economic damage worldwide. Evaluating their impacts on crop yield and water resources can help mitigate these losses. Using single variables such as precipitation, temperature, the soil moisture condition index (SMCI) and the vegetation condition index (VCI) to estimate drought impacts does not provide sufficient information on these complex conditions. Therefore, this study