Atmosphere  

Jiuzheng Zhang, Haiming Xu, Jing Ma and Jiechun Deng

Interannual variability of cyclones that are generated over the eastern Asian continent and passed over the Yellow, Bohai, and East China seas (YBE cyclones) in spring is analyzed using reanalysis datasets for the period of 1979–2017. Possible cause... see more

Merhala Thurai, Viswanathan Bringi, Patrick N. Gatlin, Walter A. Petersen and Matthew T. Wingo

The raindrop size distribution (DSD) is fundamental for quantitative precipitation estimation (QPE) and in numerical modeling of microphysical processes. Conventional disdrometers cannot capture the small drop end, in particular the drizzle mode which con... see more

Iulian-Alin Rosu, Marius-Mihai Cazacu, Otilia Sanda Prelipceanu and Maricel Agop

The article is aimed at presenting a semi-empirical model coded and computed in the programming language Python, which utilizes data gathered with a standard biaxial elastic lidar platform in order to calculate the altitude profiles of the structure coeff... see more

Laura Felgitsch, Magdalena Bichler, Julia Burkart, Bianca Fiala, Thomas Häusler, Regina Hitzenberger and Hinrich Grothe

Heterogeneous ice nucleation in the atmosphere is not fully understood. In particular, our knowledge of biological materials and their atmospheric ice nucleation properties remains scarce. Here, we present the results from systematic investigations of the... see more

Ventsislav Danchovski

Mixing layer height (MLH) is a crucial parameter for air quality modelling that is still not routinely measured. Common methods for MLH determination use atmospheric profiles recorded by radiosonde but this process suffers from coarse temporal resolution ... see more

Haitao Dai, Dawei Ma, Renbin Zhu, Bowen Sun and Jun He

Anhui is one of the highest provincial emitters of air pollutants in China due to its large coal consumption in coal-fired plants. In this study, the total emissions of nitrogen oxides (NOx), sulfur dioxide (SO2) and particulate matter (PM) from coal-fire... see more

Sébastien Doutreloup, Coraline Wyard, Charles Amory, Christoph Kittel, Michel Erpicum and Xavier Fettweis

The aim of this study is to assess the sensitivity of convective precipitation modelled by the regional climate model MAR (Modèle Atmosphérique Régional) over 1987–2017 to four newly implemented convective schemes: the Bechtold ... see more

Yunlong Peng, Zhi Gao, Riccardo Buccolieri and Wowo Ding

Urban outdoor ventilation and pollutant dispersion have important implications for urban design and planning. In this paper, two urban morphology parameters, i.e. the floor area ratio (FAR) and the building site coverage (BSC), are considered to investiga... see more

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Xiaohong Chen, Changqing Ye, Jiaming Zhang, Chongyu Xu, Lijuan Zhang and Yihan Tang

The stationarity assumption of hydrological processes has long been compromised by human disturbances in river basins. The traditional hydrological extreme-value analysis method, i.e., “extreme value theory” which assumes stationarity of the t... see more

Yonghua Zhang, Liping Liu, Shuoben Bi, Zhifang Wu, Ping Shen, Zhenlang Ao, Chao Chen and Yang Zhang

Typhoon rainstorms often cause disasters in southern China. Quantitative precipitation estimation (QPE) with the use of polarimetric radar can improve the accuracy of precipitation estimation and enhance typhoon defense ability. On the basis of the observ... see more

Yochanan Kushnir and Mordechai Stein

This paper examines the hydroclimate history of the Eastern Mediterranean (EM) region during the 10th to 14th centuries C.E., a period known as the Medieval Climate Anomaly (MCA), a time of significant historical turmoil and change in the region. The stud... see more

Ji-Young Han, So-Young Kim, In-Jin Choi and Emilia Kyung Jin

Effects of the convective triggering process in a cumulus parameterization scheme on the diurnal variation of precipitation over East Asia are examined using a regional climate model. Based on a cloud-resolving simulation showing the irrelevance of convec... see more

Stefania Squizzato, Mauro Masiol, Fereshteh Emami, David C. Chalupa, Mark J. Utell, David Q. Rich and Philip K. Hopke

The northeastern United States has experienced significant emissions reductions in the last two decades leading to a decrease in PM2.5, major gaseous pollutants (SO2, CO, NOx) and ultrafine particles (UFPs) concentrations. Emissions controls were implemen... see more

Katiana Constantinidou, George Zittis and Panos Hadjinicolaou

The Eastern Mediterranean (EM) and the Middle East and North Africa (MENA) are projected to be exposed to extreme climatic conditions in the 21st century, which will likely induce adverse impacts in various sectors. Relevant climate change impact assessme... see more

Scott D. Chambers, Elise-Andree Guérette, Khalia Monk, Alan D. Griffiths, Yang Zhang, Hiep Duc, Martin Cope, Kathryn M. Emmerson, Lisa T. Chang, Jeremy D. Silver, Steven Utembe, Jagoda Crawford, Alastair G. Williams and Melita Keywood

We propose a new technique to prepare statistically-robust benchmarking data for evaluating chemical transport model meteorology and air quality parameters within the urban boundary layer. The approach employs atmospheric class-typing, using nocturnal rad... see more

Yuxuan Feng, Jinzhong Min, Xiaoran Zhuang and Shiqi Wang

In order to further investigate the influence of ensemble generation methods on the storm-scale ensemble forecast (SSEF) system, a new ensemble sensitivity analysis-based ensemble transform with 3D rescaling (ET_3DR_ESA) method was developed. The Weather ... see more

Ibrahima Diba, Moctar Camara and Arona Diedhiou

This study investigates the changes in West African monsoon features during warm years using the Regional Climate Model version 4.5 (RegCM4.5). The analysis uses 30 years of datasets of rainfall, surface temperature and wind parameters (from 1980 to 2009)... see more

Vernon Cooray and Gerald Cooray

Electric and/or magnetic fields are generated by stationary charges, uniformly moving charges and accelerating charges. These field components are described in the literature as static fields, velocity fields (or generalized Coulomb field) and radiation f... see more

Alex Huamán De La Cruz, Yessica Bendezu Roca, Luis Suarez-Salas, José Pomalaya, Daniel Alvarez Tolentino and Adriana Gioda

The purpose of this study was to determine PM2.5 mass concentration and the contents of trace elements and water-soluble ions in samples collected inside the Metropolitan area of Huancayo. Four monitoring stations were installed at three urban areas (UNCP... see more

Paolo Tuccella, Laurent Menut, Régis Briant, Adrien Deroubaix, Dmitry Khvorostyanov, Sylvain Mailler, Guillaume Siour and Solène Turquety

The indirect effects of aerosol are particularly important over regions where meteorological conditions and aerosol content are favourable to cloud formation. This was observed during the Intensive Cloud Aerosol Measurement Campaign (IMPACT) (European Int... see more

Chuanfeng Zhao, Lijun Zhao and Xiaobo Dong

Cloud liquid water content (LWC) and droplet effective radius (re) have an important influence on cloud physical processes and optical characteristics. The microphysical properties of a three-layer pure liquid stratus were measured by aircraft probes on 2... see more

Henning Staiger, Gudrun Laschewski and Andreas Matzarakis

Application of thermal indices has become very popular over the last three decades. It is mostly aimed at urban areas and is also used in weather forecasting, especially for heat health warning systems. Recent studies also show the relevance of thermal in... see more

Arsenios E. Chatzimichailidis, Christos D. Argyropoulos, Marc J. Assael and Konstantinos E. Kakosimos

Air pollution is probably the single largest environment risk to health and urban streets are the localized, relevant hotspots. Numerous studies reviewed the state-of-the-art models, proposed best-practice guidelines and explored, using various software, ... see more

Andrew Mercer and Alyssa Bates

Tornado outbreaks (TOs) are a major hazard to life and property for locations east of the Rocky Mountains. Improving tornado outbreak (TO) forecasts will help minimize risks associated with these major events. In this study, we present a methodology for q... see more

Karl Bumke, Robin Pilch Kedzierski, Marc Schröder, Christian Klepp and Karsten Fennig

The satellite-derived HOAPS (Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data) precipitation estimates have been validated against in-situ precipitation measurements from optical disdrometers, available from OceanRAIN (Ocean Rainfall And... see more

Milena Danicic, Vladislav Zekic, Milan Mirosavljevic, Branislava Lalic, Marina Putnik-Delic, Ivana Maksimovic and Anna Dalla Marta

The present study assessed the effect of projected climate change on the sowing time, onset, and duration of flowering, the duration of the growing season, and the grain yield of spring barley in Northern Serbia. An AquaCrop simulation covered two climate... see more

Miloš Lompar, Branislava Lalic, Ljiljana Dekic and Mina Petric

Missing data in hourly and daily temperature data series is a common problem in long-term data series and many observational networks. Agricultural and environmental models and climate-related tools can be used only if weather data series are complete. To... see more

Anne Sledd and Tristan L’Ecuyer

Decreasing sea ice and snow cover are reducing the surface albedo and changing the Arctic surface energy balance. How these surface albedo changes influence the planetary albedo is a more complex question, though, that depends critically on the modulating... see more

Maria G. Lebedeva, Anthony R. Lupo, Yury G. Chendev, Olga V. Krymskaya and Aleksandr B. Solovyev

A meridional Northern Hemisphere (NH) circulation epoch, which began in 1957, is marked by changes in the temperature and precipitation regimes over southwest Russia and central USA depending on the occurrence of NH atmospheric circulation regimes. A clas... see more

Guolu Gao, Quanliang Chen, Hongke Cai, Yang Li and Zhenglin Wang

Observational data from the Global Precipitation Measurement (GPM) Core Observatory during four summers (2014–2017) has been used to investigate deep convection systems (DCSs) over the Tibetan Plateau (TP) and its south slope (SS). The frequency, geograph... see more

Haim Kutiel

The Mediterranean Basin is among the densest populated regions of the world with forecasts for a further population increase in the coming decades. Agriculture and tourism are two main economic activities of this region. Both activities depend highly on c... see more

Chiara Petroselli, Beatrice Moroni, Stefano Crocchianti, Roberta Selvaggi, Riccardo Vivani, Francesco Soggia, Marco Grotti, Francesco D’Acapito and David Cappelletti

In this work, we have characterized the iron local structure in samples of two different types of atmospheric dust using X-ray absorption spectroscopy and selective leaching experiments. Specifically, we have investigated samples of long-range transported... see more

Liang Ning, Jian Liu, Bin Wang, Kefan Chen, Mi Yan, Chunhan Jin and Qianru Wang

The variability and mechanisms of multi-decadal megadroughts over eastern China during the last millennium were investigated using a control, full-forcing, and four sensitivity experiments from the Community Earth System Model (CESM) Last Millennium Ensem... see more

Michelle Simões Reboita, Rosmeri Porfírio Da Rocha and Débora Martins de Oliveira

This work documents the main features of six subtropical cyclones occurred between the years 2010 and 2016 over the southwestern South Atlantic Ocean, near the Brazilian coast, which received names (with the exception of one) from the Brazilian Navy Hydro... see more

Baoling Mei, Hongyu Yue, Xunhua Zheng, William H. McDowell, Qingshan Zhao, Zaixing Zhou and Zhisheng Yao

The establishment of sown pasture is an important agricultural practice in many landscapes. Although both native grassland and sown pasture play a key role in the global carbon cycle, due to lack of data and field experiments, our understanding of grassla... see more

Wenshuai Li, Wencai Wang, Yang Zhou, Yuanyuan Ma, Daizhou Zhang and Lifang Sheng

The range and time of the environmental effects of Asian dust are closely dependent on the pathways and the speed of dust plume movement. In this study, the occurrence and movement of two dust storms in China in May 2017 were examined by using open space-... see more

Xiang Zheng, Jun Qin, Shengwen Liang, Zhengxuan Yuan and Yassin Mbululo

Ambient air quality monitoring data and radar tracking sonde data were used to study the atmospheric boundary layer structure (ABLS) and its changing characteristics over Wuhan. The boundary layer structure index (BLSI), which can effectively describe the... see more

Patricia Castellanos, Arlindo M. Da Silva, Anton S. Darmenov, Virginie Buchard, Ravi C. Govindaraju, Pubu Ciren and Shobha Kondragunta

In the near future, there will be several new instruments measuring atmospheric composition from geostationary orbit over North America, East Asia, and Europe. This constellation of satellites will provide high resolution, time resolved measurements of tr... see more

Weiwei Hu, Guwei Zhang, Gang Zeng and Zhongxian Li

Recently, NCAR (the National Center for Atmospheric Research) released the Community Earth System Model’s low-warming simulations, which provided long-term climate data for stabilization pathways at 1.5 °C and 2.0 °C above pre-industrial levels. Based on ... see more