Article
Meteorology & Atmospheric Sciences
Xingya Xi, Yuanjie Zhang, Zhiqiu Gao, Yuanjian Yang, Shaohui Zhou, Zexia Duan, Jian Yin
Summary: This study investigates the correlations between the planetary boundary layer height and surface meteorological factors. The results show significant spatial and temporal variations in these correlations during the daytime and annual cycle. Furthermore, the study highlights the influence of thermal stratification and local hydrological factors on the correlations.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2022)
Article
Meteorology & Atmospheric Sciences
Liming Zhou, Yuhong Tian, Nan Wei, Shu-Peng Ho, Jing Li
Summary: Turbulent mixing in the planetary boundary layer plays a critical role in the vertical exchange of heat, moisture, momentum, trace gases, and aerosols. This study examines the spatial patterns of long-term PBLH trends over land and finds consensus on increasing PBLH over the Sahara Desert and Arabian Peninsula and declining PBLH in India. The changes in PBLH are significantly correlated with changes in surface heating and moisture at the global scale.
JOURNAL OF CLIMATE
(2021)
Article
Geosciences, Multidisciplinary
Xingchi Wang, Tobias Kukulka, J. Thomas Farrar, Albert J. Plueddemann, Seth F. Zippel
Summary: The turbulent ocean surface boundary layer (OSBL) shoals during daytime solar surface heating, developing a diurnal warm layer (DWL). The DWL significantly influences OSBL dynamics by trapping momentum and heat in a shallow near-surface layer. Therefore, DWL depth is critical for understanding OSBL transport and ocean-atmosphere coupling.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Zhijuan Zhang, Ling Mu, Chen Li
Summary: The planetary boundary layer height plays a crucial role in the atmosphere, and this study compares the estimates of boundary layer height by AD-Net and ECMWF. The results show that AD-Net performs well in estimating boundary layer height, with some significant discrepancies noted between AD-Net and ECMWF in certain regions and seasons.
Article
Meteorology & Atmospheric Sciences
Futing Wang, Ting Yang, Zifa Wang, Xi Chen, Haibo Wang, Jianping Guo
Summary: This study evaluated the performance of nine lidar algorithms under different pollution scenarios in retrieving PBLH, with GM, LGM, CRGM, IPM, VAR, VGM, WCT, WCTD, and POLARIS showing varying capabilities under different conditions. The comprehensive comparison provides guidance on selecting the appropriate algorithm for specific atmospheric conditions.
ATMOSPHERIC RESEARCH
(2021)
Article
Environmental Sciences
Wang Wei, Ya'ni Pan, Huihui Feng, Biyan Chen
Summary: In this study, a new method based on a bagged tree model and micro-lidar backscatter profiles is proposed for retrieving the planetary boundary layer height (PBLH). Compared with traditional methods, the proposed method shows better performance in relevant indicators, is almost unaffected by cloud and aerosol layers, and can be used for retrieving shallow PBL.
Article
Environmental Sciences
Jun Zou, Jianning Sun, Te Li, Xiaomen Han, Zixuan Xiang, Jie Sha
Summary: A severe haze-fog episode occurred in the Yangtze River Delta region of eastern China in November 2018. Observations showed changes in PM2.5 mass concentration, convective planetary boundary layer height, and air humidity during and after the fog days. The fog top cooling induced a potential temperature jump, limiting the development of the planetary boundary layer during daytime after fog dissipation. The wet deposition of fog on PM2.5 was found to be negligible, and aerosols were liberated from fog droplets to the atmosphere after fog dissipation.
AEROSOL AND AIR QUALITY RESEARCH
(2021)
Article
Environmental Sciences
Ying Liu, Xiaomin Zhang, Jianguo Tan, Peter Grathwohl, Rainer Lohmann
Summary: The atmospheric deposition of PAHs onto soil in Shanghai and its surrounding areas poses a threat to terrestrial ecosystem. A total of 139 atmospheric bulk deposition samples were collected to locate the potential source areas using a multisite joint location method. The identified source areas were confirmed by PM and SO2 data from national ground monitoring stations.
ENVIRONMENTAL POLLUTION
(2022)
Article
Meteorology & Atmospheric Sciences
Chongzhao Zhang, Zhongjing Jiang, Meijing Liu, Yueming Dong, Jing Li
Summary: Using observations and simulations, this study explores the relationship between surface ozone and planetary boundary layer height (PBLH) in Beijing during summer daytime. The results show that the surface ozone-PBLH relationship undergoes a three-stage evolution with ozone concentration. The findings contribute to understanding the variability of surface ozone and provide insights for local ozone air quality control in Beijing.
ATMOSPHERIC RESEARCH
(2023)
Article
Environmental Sciences
Aurelie Riandet, Irene Xueref-Remy, Ioana Popovici, Ludovic Lelandais, Alexandre Armengaud, Philippe Goloub
Summary: This study investigates the diurnal and seasonal variability in the atmospheric boundary-layer height (ABLH) in Marseille for the mistral and sea/land breeze wind patterns. A lidar using a Haar wavelet method was used to extract the ABLH data. The results show that the ABLH reaches to about 1000 m during mistral conditions, with a diurnal amplitude of 650-740 m, and is lower during sea/land breeze situations.
Article
Meteorology & Atmospheric Sciences
Nils Slaettberg, Hui-Wen Lai, Xuelong Chen, Yaoming Ma, Deliang Chen
Summary: This study presents a multi-decadal climatology of Planetary Boundary Layer Height (PBLH) over the Tibetan Plateau using high-resolution reanalysis data (ERA5). The research shows that PBLH varies in different seasons and regions, and is correlated with factors such as NAO and Indian summer monsoon. The diurnal cycles of PBLH on the Tibetan Plateau are generally affected by insolation, reaching their peaks in the afternoon.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2022)
Article
Environmental Sciences
Li Wang, Shengpeng Yang, Lin Lin
Summary: According to GPS radio occultation data, two approaches for determining the height of the planetary boundary layer (PBLH) were evaluated in this study. The results show that the PBLH estimated using the local gradient approach is closer to the actual value. Additionally, the analysis of tropical cyclones reveals that the mean PBLH increases with the increase in cyclone intensity.
Article
Meteorology & Atmospheric Sciences
Liming Zhou
Summary: This study investigated the diurnal and vertical variations of desert amplification (DA) over the Arabian Peninsula, finding that the surface warming rate is inversely related to the magnitude of planetary boundary layer height (PBLH) and DA exhibits a distinct diurnal asymmetry with stronger warming for shallower PBLH. Results indicate that PBLH biases may explain some of the diurnal and vertical warming/cooling biases in reanalysis data, suggesting the importance of PBLH in modulating the structure of DA through heat redistribution via turbulent mixing.
Article
Environmental Sciences
Jiaxin Li, Yongxiang Han, Weijia Liu, Sheng Wang, Le Cao, Zhengqi Lu
Summary: Planetary boundary layer height (PBLH) is a crucial factor for dust storms and dust devils in desert regions. Existing parameterization schemes have limitations in reflecting the diurnal cycles of PBLH in these areas, which affects global dust-aerosol emission evaluation. A new theoretical model based on the heating effect of dust aerosols and the vertical profile of virtual potential temperature is developed, and successfully parameterized using observations in northern China. The new scheme shows better agreement with observations compared to existing schemes, and provides improved evaluation of dust-devil emissions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
K. Ashin, M. S. Girishkumar, Eric D'Asaro, J. Jofia, V. R. Sherin, N. Sureshkumar, E. Pattabhi Ram Rao
Summary: Vertical microstructure profile observations in the northeastern Arabian Sea indicate the formation of salt fingers in the diurnal thermocline region during the daytime. The conditions in the diurnal thermocline layer, such as favorable Turner angle values and weak shear-driven mixing, contribute to the presence of salt fingers. The unusual daytime salinity maximum in the mixed layer is primarily attributed to a reduction in vertical entrainment of fresh water and other contributing factors.
SCIENTIFIC REPORTS
(2023)
Article
Meteorology & Atmospheric Sciences
Qingquan Li, Tao Wang, Fang Wang, Xin-Zhong Liang, Chongbo Zhao, Lili Dong, Chunyu Zhao, Bing Xie
Summary: The CWRF model effectively simulates the East Asian summer monsoon and Chinese climate, demonstrating good agreement with observational data in terms of atmospheric circulation and water vapor transport. However, biases still exist, particularly in the Yangtze-Huaihe River basin. The model overestimates land-ocean thermal contrast, resulting in a stronger East Asian summer monsoon, with corresponding precipitation and temperature biases in China.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2021)
Article
Meteorology & Atmospheric Sciences
Rui Wang, Yiting Zhu, Fengxue Qiao, Xin-Zhong Liang, Han Zhang, Yang Ding
Summary: This study examines the effects of planetary boundary layer (PBL) physics on extreme rainfall forecast, revealing that the MYNN scheme shows significant advantages in predicting extreme rainfall distribution and time of peak rainfall, especially in finer grids.
ADVANCES IN ATMOSPHERIC SCIENCES
(2021)
Article
Environmental Sciences
Linze Li, Chengsheng Jiang, Raghu Murtugudde, Xin-Zhong Liang, Amir Sapkota
Summary: Climate change-induced increases in extreme weather events, coupled with urban population growth, are amplifying the impact. With most population growth projected to occur in urban centers of low- and middle-income countries in the coming decades, skillful early warnings and community-specific response strategies are urgently needed to reduce public health impacts and associated costs to the global economy.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Meteorology & Atmospheric Sciences
Jiangfeng Wei, Jingwen Zhao, Haishan Chen, Xin-Zhong Liang
Summary: Biases in land-atmosphere interaction simulations can affect weather and climate predictions, with different components and parameterizations contributing to these biases. Analysis of data from East Asia shows varying relationships between land surface fluxes and lifting condensation level height, with different parameterizations in the regional climate model impacting these relationships. Further understanding of land-atmosphere interactions is crucial for improving coupled model simulations.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Article
Meteorology & Atmospheric Sciences
Rui Wang, Fengxue Qiao, Xin-Zhong Liang, Yiting Zhu, Han Zhang, Qi Li, Yang Ding
Summary: This study investigates the impact of convection representation in the WRF model on extreme precipitation events in Shanghai, finding that the GF parameterization performs better in simulating primary rainfall intensity peaks, while the KF parameterization is more accurate in capturing diurnal timing of precipitation events.
ATMOSPHERIC RESEARCH
(2021)
Article
Meteorology & Atmospheric Sciences
Rongsheng Jiang, Lei Sun, Chao Sun, Xin-Zhong Liang
Summary: The CWRF downscaling improved the CCSM4 in capturing observed precipitation characteristics and reduced model structural uncertainties for future projections, highlighting the reliability of regional precipitation changes.
Article
Environmental Sciences
Guwei Zhang, Gang Zeng, Xin-Zhong Liang, Cunrui Huang
Summary: The study predicts a sharp increase in heat danger days in Chinese urban agglomerations during periods of population explosion, with approximately one-third of the population facing three or more heat danger days annually. In the coming decades, the heat risk is expected to significantly increase, especially under high emission pathways, highlighting the need to develop strategic plans to reduce heat risk.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Meteorology & Atmospheric Sciences
Yiting Zhu, Fengxue Qiao, Yujia Liu, Xin-Zhong Liang, Qiyang Liu, Rui Wang, Han Zhang
Summary: The distribution of heavy rainfall from a landed tropical cyclone is mainly influenced by the storm's intensity at landfall, while environmental factors play a larger role during the inland stages. Different microphysics and planetary boundary layer schemes impact the simulation of the storm's thermodynamic structure and key environmental factors, resulting in varying forecast skills at different stages. The use of certain schemes, such as the Yonsei University PBL scheme and MP schemes with sophisticated ice processes, demonstrate advantages in simulating postlandfall heavy rainfall from weak tropical cyclones.
ATMOSPHERIC RESEARCH
(2022)
Editorial Material
Multidisciplinary Sciences
Xin-Zhong Liang
Summary: Excessive rainfall can lead to catastrophic socio-economic losses, and analyzing changes in gross regional product can help identify how extreme precipitation affects global economic productivity.
Article
Environmental Sciences
Richard Remigio, Rodman Turpin, Jochen G. Raimann, Peter Kotanko, Frank W. Maddux, Amy Rebecca Sapkota, Xin-Zhong Liang, Robin Puett, Xin He, Amir Sapkota
Summary: The study confirmed the association between ambient temperature, all-cause hospital admissions, and all-cause mortality increase. Findings suggest that pre-dialysis systolic blood pressure (preSBP) and interdialytic weight gain (IDWG) can act as independent mediators. However, in combined pathway models, changes in preSBP and IDWG had little intermediary effect on the association between temperature and all-cause hospital admissions and mortality.
ENVIRONMENTAL RESEARCH
(2022)
Article
Agronomy
Yufeng He, Deepak Jaiswal, Xin-Zhong Liang, Chao Sun, Stephen P. Long
Summary: Growing perennial grasses, such as Miscanthus x giganteus, on marginal land can not only reduce soil erosion and restore carbon stocks, but also mitigate regional climate warming and drying. This is achieved through increased duration and size of the leaf canopy, resulting in larger solar reflection, more evapotranspiration, and decreased sensible heat transfer. These interactions lead to increased rainfall, reduced water vapor pressure deficit, and higher crop yields, providing a feasible solution to climate change mitigation and adaptation.
GLOBAL CHANGE BIOLOGY BIOENERGY
(2022)
Article
Meteorology & Atmospheric Sciences
Yujie Wang, Yang Xiang, Lianchun Song, Xin-Zhong Liang
Summary: This study quantifies the contribution of urbanization to extreme high-temperature events in Beijing, Tianjin, and Hebei. The research finds that urbanization has significantly increased the intensity and frequency of these events, especially in larger cities. Therefore, it is crucial to limit the rate of urbanization and implement effective strategies for adaptation and mitigation in order to sustain development.
JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY
(2022)
Article
Environmental Sciences
Richard Remigio, Hao He, Jochen G. Raimann, Peter Kotanko, Frank W. Maddux, Amy Rebecca Sapkota, Xin-Zhong Liang, Robin Puett, Xin He, Amir Sapkota
Summary: The study found an interdependent relationship between air pollution and extreme heat events among ESKD patients, impacting all-cause mortality risks. Increases in air pollution during extreme heat events were associated with significantly higher mortality risks among ESKD patients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Sijal Dangol, Xuesong Zhang, Xin-Zhong Liang, Fernando Miralles-Wilhelm
Summary: Groundwater use for irrigation has a significant impact on agricultural productivity and local water resources. This study evaluated different groundwater irrigation schemes and found that auto-irrigation scheduling based on plant water stress generally outperformed prescribed irrigation based on well pumping rates in simulating irrigation volume and groundwater levels. The study also highlighted the effects of groundwater irrigation on the water cycle and crop water productivity.
Article
Environmental Sciences
Sijal Dangol, Xuesong Zhang, Xin-Zhong Liang, Martha Anderson, Wade Crow, Sangchul Lee, Glenn E. Moglen, Gregory W. McCarty
Summary: This study calibrated the Soil and Water Assessment Tool (SWAT) model using streamflow data and remotely sensed hydrologic variables. The results show that adding remotely sensed ET and soil moisture to streamflow for calibration can impact the sensitive parameters of the model, but it does not necessarily improve its performance. Using remote sensing data alone leads to a deterioration in model performance. Different choices of remote sensing data for calibration also result in noticeable differences in simulated hydrologic processes. The comparison between SWAT and SWAT-Carbon models under different calibration setups reveals significant differences in their performance.
