样式: 排序: IF: - GO 导出 标记为已读
-
Assimilating FY-4A AGRI Radiances with a Channel-Sensitive Cloud Detection Scheme for the Analysis and Forecasting of Multiple Typhoons Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-03-15 Feifei Shen, Aiqing Shu, Zhiquan Liu, Hong Li, Lipeng Jiang, Tao Zhang, Dongmei Xu
This paper presents an attempt at assimilating clear-sky FY-4A Advanced Geosynchronous Radiation Imager (AGRI) radiances from two water vapor channels for the prediction of three landfalling typhoon events over the West Pacific Ocean using the 3DVar data assimilation (DA) method along with the WRF model. A channel-sensitive cloud detection scheme based on the particle filter (PF) algorithm is developed
-
Comparison of a Spectral Bin and Two Multi-Moment Bulk Microphysics Schemes for Supercell Simulation: Investigation into Key Processes Responsible for Hydrometeor Distributions and Precipitation Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-03-15 Marcus Johnson, Ming Xue, Youngsun Jung
There are more uncertainties with ice hydrometeor representations and related processes than liquid hydrometeors within microphysics parameterization (MP) schemes because of their complicated geometries and physical properties. Idealized supercell simulations are produced using the WRF model coupled with “full” Hebrew University spectral bin MP (HU-SBM), and NSSL and Thompson bulk MP (BMP) schemes
-
Assessment of Wet Season Precipitation in the Central United States by the Regional Climate Simulation of the WRFG Member in NARCCAP and Its Relationship with Large-Scale Circulation Biases Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-04-01
Abstract Assessment of past-climate simulations of regional climate models (RCMs) is important for understanding the reliability of RCMs when used to project future regional climate. Here, we assess the performance and discuss possible causes of biases in a WRF-based RCM with a grid spacing of 50 km, named WRFG, from the North American Regional Climate Change Assessment Program (NARCCAP) in simulating
-
Spatiotemporal Characteristics of Rainfall over Different Terrain Features in the Middle Reaches of the Yangtze River Basin during the Warm Seasons of 2016–20 Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-03-05
Abstract Based on hourly rain gauge data during May–September of 2016–20, we analyze the spatiotemporal distributions of total rainfall (TR) and short-duration heavy rainfall (SDHR; hourly rainfall ⩾ 20 mm) and their diurnal variations over the middle reaches of the Yangtze River basin. For all three types of terrain (i.e., mountain, foothill, and plain), the amount of TR and SDHR both maximize in
-
The Global Energy and Water Exchanges (GEWEX) Project in Central Asia: The Case for a Regional Hydroclimate Project Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-03-05 Michael Brody, Maksim Kulikov, Sagynbek Orunbaev, Peter J. Van Oevelen
Central Asia consists of the former Soviet Republics, Kazakhstan, Kyrgyz Republic, Tajikistan, Turkmenistan, and Uzbekistan. The region’s climate is continental, mostly semi-arid to arid. Agriculture is a significant part of the region’s economy. By its nature of intensive water use, agriculture is extremely vulnerable to climate change. Population growth and irrigation development have significantly
-
A Tutorial Review of the Solar Power Curve: Regressions, Model Chains, and Their Hybridization and Probabilistic Extensions Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-03-01 Dazhi Yang, Xiang’ao Xia, Martin János Mayer
Owing to the persisting hype in pushing toward global carbon neutrality, the study scope of atmospheric science is rapidly expanding. Among numerous trending topics, energy meteorology has been attracting the most attention hitherto. One essential skill of solar energy meteorologists is solar power curve modeling, which seeks to map irradiance and auxiliary weather variables to solar power, by statistical
-
Non-crossing Quantile Regression Neural Network as a Calibration Tool for Ensemble Weather Forecasts Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-03-01 Mengmeng Song, Dazhi Yang, Sebastian Lerch, Xiang’ao Xia, Gokhan Mert Yagli, Jamie M. Bright, Yanbo Shen, Bai Liu, Xingli Liu, Martin János Mayer
Despite the maturity of ensemble numerical weather prediction (NWP), the resulting forecasts are still, more often than not, under-dispersed. As such, forecast calibration tools have become popular. Among those tools, quantile regression (QR) is highly competitive in terms of both flexibility and predictive performance. Nevertheless, a long-standing problem of QR is quantile crossing, which greatly
-
Recent Ventures in Interdisciplinary Arctic Research: The ARCPATH Project Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-02-27 Astrid E. J. Ogilvie, Leslie A. King, Noel Keenlyside, François Counillon, Brynhildur Daviđsdóttir, Níels Einarsson, Sergey Gulev, Ke Fan, Torben Koenigk, James R. McGoodwin, Marianne H. Rasmusson, Shuting Yang
This paper celebrates Professor Yongqi GAO’s significant achievement in the field of interdisciplinary studies within the context of his final research project Arctic Climate Predictions: Pathways to Resilient Sustainable Societies - ARCPATH (https://www.svs.is/en/projects/finished-projects/arcpath). The disciplines represented in the project are related to climatology, anthropology, marine biology
-
Scientific Advances and Weather Services of the China Meteorological Administration’s National Forecasting Systems during the Beijing 2022 Winter Olympics Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-02-22
Abstract Since the Beijing 2022 Winter Olympics was the first Winter Olympics in history held in continental winter monsoon climate conditions across complex terrain areas, there is a deficiency of relevant research, operational techniques, and experience. This made providing meteorological services for this event particularly challenging. The China Meteorological Administration (CMA) Earth System
-
Persistent Variations in the East Asian Trough from March to April and the Possible Mechanism Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-02-09 Shui Yu, Jianqi Sun
The East Asian trough (EAT) profoundly influences the East Asian spring climate. In this study, the relationship of the EATs among the three spring months is investigated. Correlation analysis shows that the variation in March EAT is closely related to that of April EAT. Extended empirical orthogonal function (EEOF) analysis also confirms the co-variation of the March and April EATs. The positive/negative
-
Shallow Convection Dataset Simulated by Three Different Large Eddy Models Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-02-09 Yaxin Zhao, Xiaocong Wang, Yimin Liu, Guoxiong Wu, Yanjie Liu
Shallow convection plays an important role in transporting heat and moisture from the near-surface to higher altitudes, yet its parameterization in numerical models remains a great challenge, partly due to the lack of high-resolution observations. This study describes a large eddy simulation (LES) dataset for four shallow convection cases that differ primarily in inversion strength, which can be used
-
The Unprecedented Extreme Anticyclonic Anomaly over Northeast Asia in July 2021 and Its Climatic Impacts Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-02-09 Xingyan Zhou, Riyu Lu
This study investigates the evolution of an extreme anomalous anticyclone (AA) event over Northeast Asia, which was one of the dominant circulation systems responsible for the catastrophic extreme precipitation event in July 2021 in Henan, and further explores the significant impact of this AA on surface temperatures beneath it. The results indicate that this AA event over Northeast Asia was unprecedented
-
Alignment of Track Oscillations during Tropical Cyclone Rapid Intensification Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-02-09
Abstract Recent studies on tropical cyclone (TC) intensity change indicate that the development of a vertically aligned TC circulation is a key feature of its rapid intensification (RI), however, understanding how vortex alignment occurs remains a challenging topic in TC intensity change research. Based on the simulation outputs of North Atlantic Hurricane Wilma (2005) and western North Pacific Typhoon
-
The Contribution of United States Aircraft Reconnaissance Data to the China Meteorological Administration Tropical Cyclone Intensity Data: An Evaluation of Homogeneity Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-02-09 Ming Ying, Xiaoqin Lu
This paper investigates the homogeneity of United States aircraft reconnaissance data and the impact of these data on the homogeneity of the tropical cyclone (TC) best track data for the seasons 1949–1987 generated by the China Meteorological Administration (CMA). The evaluation of the reconnaissance data shows that the minimum central sea level pressure (MCP) data are relatively homogeneous, whereas
-
Enhancing Deep Learning Soil Moisture Forecasting Models by Integrating Physics-based Models Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-02-07 Lu Li, Yongjiu Dai, Zhongwang Wei, Wei Shangguan, Nan Wei, Yonggen Zhang, Qingliang Li, Xian-Xiang Li
Accurate soil moisture (SM) prediction is critical for understanding hydrological processes. Physics-based (PB) models exhibit large uncertainties in SM predictions arising from uncertain parameterizations and insufficient representation of land-surface processes. In addition to PB models, deep learning (DL) models have been widely used in SM predictions recently. However, few pure DL models have notably
-
Assessing the Performance of a Dynamical Downscaling Simulation Driven by a Bias-Corrected CMIP6 Dataset for Asian Climate Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-02-06
Abstract In this study, we aim to assess dynamical downscaling simulations by utilizing a novel bias-corrected global climate model (GCM) data to drive a regional climate model (RCM) over the Asia-western North Pacific region. Three simulations were conducted with a 25-km grid spacing for the period 1980–2014. The first simulation (WRF_ERA5) was driven by the European Centre for Medium-Range Weather
-
Deep Learning Shows Promise for Seasonal Prediction of Antarctic Sea Ice in a Rapid Decline Scenario Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-02-06
Abstract The rapidly changing Antarctic sea ice has garnered significant interest. To enhance the prediction skill for sea ice and respond to the Sea Ice Prediction Network-South’s latest call, this study presents the reforecast results of Antarctic sea-ice area and extent from December to June of the coming year with a Convolutional Long Short-Term Memory (ConvLSTM) Network. The reforecast experiments
-
Different El Niño Flavors and Associated Atmospheric Teleconnections as Simulated in a Hybrid Coupled Model Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-02-06 Junya Hu, Hongna Wang, Chuan Gao, Rong-Hua Zhang
A previously developed hybrid coupled model (HCM) is composed of an intermediate tropical Pacific Ocean model and a global atmospheric general circulation model (AGCM), denoted as HCMAGCM. In this study, different El Niño flavors, namely the Eastern-Pacific (EP) and Central-Pacific (CP) types, and the associated global atmospheric teleconnections are examined in a 1000-yr control simulation of the
-
Climate–Vegetation Coverage Interactions in the Hengduan Mountains Area, Southeastern Tibetan Plateau, and Their Downstream Effects Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-19 Congxi Fang, Jinlei Chen, Chaojun Ouyang, Lu Wang, Changfeng Sun, Quan Zhang, Jun Wen
Little is known about the mechanism of climate–vegetation coverage coupled changes in the Tibetan Plateau (TP) region, which is the most climatically sensitive and ecologically fragile region with the highest terrain in the world. This study, using multisource datasets (including satellite data and meteorological observations and reanalysis data) revealed the mutual feedback mechanisms between changes
-
Cloud Top Pressure Retrieval Using Polarized and Oxygen A-band Measurements from GF5 and PARASOL Satellites Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-13 Lesi Wei, Huazhe Shang, Jian Xu, Chong Shi, Gegen Tana, Kefu Chao, Shanhu Bao, Liangfu Chen, Husi Letu
Cloud top pressure (CTP) is one of the critical cloud properties that significantly affects the radiative effect of clouds. Multi-angle polarized sensors can employ polarized bands (490 nm) or O2 A-bands (763 and 765 nm) to retrieve the CTP. However, the CTP retrieved by the two methods shows inconsistent results in certain cases, and large uncertainties in low and thin cloud retrievals, which may
-
Impact of Initial Soil Conditions on Soil Hydrothermal and Surface Energy Fluxes in the Permafrost Region of the Tibetan Plateau Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-13 Siqiong Luo, Zihang Chen, Jingyuan Wang, Tonghua Wu, Yao Xiao, Yongping Qiao
Accurate initial soil conditions play a crucial role in simulating soil hydrothermal and surface energy fluxes in land surface process modeling. This study emphasized the influence of the initial soil temperature (ST) and soil moisture (SM) conditions on a land surface energy and water simulation in the permafrost region in the Tibetan Plateau (TP) using the Community Land Model version 5.0 (CLM5.0)
-
The 2022 Extreme Heatwave in Shanghai, Lower Reaches of the Yangtze River Valley: Combined Influences of Multiscale Variabilities Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-09 Ping Liang, Zhiqi Zhang, Yihui Ding, Zeng-Zhen Hu, Qi Chen
In the summer of 2022, China (especially the Yangtze River Valley, YRV) suffered its strongest heatwave (HW) event since 1961. In this study, we examined the influences of multiscale variabilities on the 2022 extreme HW in the lower reaches of the YRV, focusing on the city of Shanghai. We found that about 1/3 of the 2022 HW days in Shanghai can be attributed to the long-term warming trend of global
-
A Tri-mode of Mock-Walker Cells Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-08 Han Qin, Ji Nie, Zhiyong Meng
This work uses cloud-resolving simulations to study mock-Walker cells driven by a specified sea surface temperature (SST). The associated precipitation in the mock-Walker cells exhibits three different modes, including a single peak of precipitation over the SST maximum (mode 1), symmetric double peaks of precipitation straddling the SST maximum (mode 2), and a single peak of precipitation on one side
-
A Study on the Assessment and Integration of Multi-Source Evapotranspiration Products over the Tibetan Plateau Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-05 Ming Cheng, Lei Zhong, Yaoming Ma, Han Ma, Yaoxin Chang, Peizhen Li, Meilin Cheng, Xian Wang, Nan Ge
Evapotranspiration (ET) is a crucial variable in the terrestrial water, carbon, and energy cycles. At present, a large number of multisource ET products exist. Due to sparse observations, however, great challenges exist in the evaluation and integration of ET products in remote and complex areas such as the Tibetan Plateau (TP). In this paper, the applicability of the multiple collocation (MC) method
-
Cloud-Type-Dependent 1DVAR Algorithm for Retrieving Hydrometeors and Precipitation in Tropical Cyclone Nanmadol from GMI Data Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-05 Linjun Han, Fuzhong Weng, Hao Hu, Xiuqing Hu
Understanding the structure of tropical cyclone (TC) hydrometeors is crucial for detecting the changes in the distribution and intensity of precipitation. In this study, the GMI brightness temperature and cloud-dependent 1DVAR algorithm were used to retrieve the hydrometeor profiles and surface rain rate of TC Nanmadol (2022). The Advanced Radiative Transfer Modeling System (ARMS) was used to calculate
-
Aircraft Observation and Simulation of the Supercooled Liquid Water Layer in a Warm Conveyor Belt over North China Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-03-01
Abstract This paper studied a snow event over North China on 21 February 2017, using aircraft in-situ data, a Lagrangian analysis tool, and WRF simulations with different microphysical schemes to investigate the supercooled layer of warm conveyor belts (WCBs). Based on the aircraft data, we found a fine vertical structure within clouds in the WCB and highlighted a 1–2 km thin supercooled liquid water
-
The First Global Map of Atmospheric Ammonia (NH3) as Observed by the HIRAS/FY-3D Satellite Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-05 Minqiang Zhou, Zhili Deng, Charles Robert, Xingying Zhang, Lu Zhang, Yapeng Wang, Chengli Qi, Pucai Wang, Martine De Mazière
Atmospheric ammonia (NH3) is a chemically active trace gas that plays an important role in the atmospheric environment and climate change. Satellite remote sensing is a powerful technique to monitor NH3 concentration based on the absorption lines of NH3 in the thermal infrared region. In this study, we establish a retrieval algorithm to derive the NH3 column from the Hyperspectral Infrared Atmospheric
-
Frontogenesis and Frontolysis of a Cold Filament Driven by the Cross-Filament Wind and Wave Fields Simulated by a Large Eddy Simulation Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-05 Guojing Li, Dongxiao Wang, Changming Dong, Jiayi Pan, Yeqiang Shu, Zhenqiu Zhang
The variations of the frontogenetic trend of a cold filament induced by the cross-filament wind and wave fields are studied by a non-hydrostatic large eddy simulation. Five cases with different strengths of wind and wave fields are studied. The results show that the intense wind and wave fields further break the symmetries of submesoscale flow fields and suppress the levels of filament frontogenesis
-
A Long-Time-Step-Permitting Tracer Transport Model on the Regular Latitude–Longitude Grid Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-05 Jianghao Li, Li Dong
If an explicit time scheme is used in a numerical model, the size of the integration time step is typically limited by the spatial resolution. This study develops a regular latitude–longitude grid-based global three-dimensional tracer transport model that is computationally stable at large time-step sizes. The tracer model employs a finite-volume flux-form semi-Lagrangian transport scheme in the horizontal
-
Seasonal Variation of the Sea Surface Temperature Growth Rate of ENSO Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-03-01
Abstract El Niño–Southern Oscillation (ENSO) exhibits a distinctive phase-locking characteristic, first expressed during its onset in boreal spring, developing during summer and autumn, reaching its peak towards winter, and decaying over the next spring. Several studies have demonstrated that this feature arises as a result of seasonal variation in the growth rate of ENSO as expressed by the sea surface
-
Comparison of the Minimum Bounding Rectangle and Minimum Circumscribed Ellipse of Rain Cells from TRMM Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-05 Hongke Cai, Yaqin Mao, Xuanhao Zhu, Yunfei Fu, Renjun Zhou
Based on the TRMM dataset, this paper compares the applicability of the improved MCE (minimum circumscribed ellipse), MBR (minimum bounding rectangle), and DIA (direct indexing area) methods for rain cell fitting. These three methods can reflect the geometric characteristics of clouds and apply geometric parameters to estimate the real dimensions of rain cells. The MCE method shows a major advantage
-
An Initial Perturbation Method for the Multiscale Singular Vector in Global Ensemble Prediction Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-05 Xin Liu, Jing Chen, Yongzhu Liu, Zhenhua Huo, Zhizhen Xu, Fajing Chen, Jing Wang, Yanan Ma, Yumeng Han
Ensemble prediction is widely used to represent the uncertainty of single deterministic Numerical Weather Prediction (NWP) caused by errors in initial conditions (ICs). The traditional Singular Vector (SV) initial perturbation method tends only to capture synoptic scale initial uncertainty rather than mesoscale uncertainty in global ensemble prediction. To address this issue, a multiscale SV initial
-
The Persistence and Zonal Scale of Atmospheric Dipolar Modes Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-05 Jie Song
This study investigates the relationship between the persistence and the zonal scale of atmospheric dipolar modes (DMs). Results from the daily data of ERA5 and the long-term output of an idealized atmospheric model show that the atmospheric DMs with a broader (narrower) zonal scale dipolar structure possess a longer (shorter) persistence. A detailed vorticity budget analysis indicates that the persistence
-
Downscaling Seasonal Precipitation Forecasts over East Africa with Deep Convolutional Neural Networks Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-05 Temesgen Gebremariam Asfaw, Jing-Jia Luo
This study assesses the suitability of convolutional neural networks (CNNs) for downscaling precipitation over East Africa in the context of seasonal forecasting. To achieve this, we design a set of experiments that compare different CNN configurations and deployed the best-performing architecture to downscale one-month lead seasonal forecasts of June–July–August–September (JJAS) precipitation from
-
Assessment of Crop Yield in China Simulated by Thirteen Global Gridded Crop Models Adv. Atmos. Sci. (IF 5.8) Pub Date : 2024-01-05 Dezhen Yin, Fang Li, Yaqiong Lu, Xiaodong Zeng, Zhongda Lin, Yanqing Zhou
Global gridded crop models (GGCMs) have been broadly applied to assess the impacts of climate and environmental change and adaptation on agricultural production. China is a major grain producing country, but thus far only a few studies have assessed the performance of GGCMs in China, and these studies mainly focused on the average and interannual variability of national and regional yields. Here, a
-
Assimilation of GOES-R Geostationary Lightning Mapper Flash Extent Density Data in GSI 3DVar, EnKF, and Hybrid En3DVar for the Analysis and Short-Term Forecast of a Supercell Storm Case Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-12-06 Rong Kong, Ming Xue, Edward R. Mansell, Chengsi Liu, Alexandre O. Fierro
Capabilities to assimilate Geostationary Operational Environmental Satellite “R-series” (GOES-R) Geostationary Lightning Mapper (GLM) flash extent density (FED) data within the operational Gridpoint Statistical Interpolation ensemble Kalman filter (GSI-EnKF) framework were previously developed and tested with a mesoscale convective system (MCS) case. In this study, such capabilities are further developed
-
Impacts of Ice-Ocean Stress on the Subpolar Southern Ocean: Role of the Ocean Surface Current Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-12-06 Yang Wu, Zhaomin Wang, Chengyan Liu, Liangjun Yan
The mechanical influences involved in the interaction between the Antarctic sea ice and ocean surface current (OSC) on the subpolar Southern Ocean have been systematically investigated for the first time by conducting two simulations that include and exclude the OSC in the calculation of the ice-ocean stress (IOS), using an eddy-permitting coupled ocean-sea ice global model. By comparing the results
-
Attribution of Biases of Interhemispheric Temperature Contrast in CMIP6 Models Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-12-06 Shiyan Zhang, Yongyun Hu, Jiankai Zhang, Yan Xia
One of the basic characteristics of Earth’s modern climate is that the Northern Hemisphere (NH) is climatologically warmer than the Southern Hemisphere (SH). Here, model performances of this basic state are examined using simulation results from 26 CMIP6 models. Results show that the CMIP6 models underestimate the contrast in interhemispheric surface temperatures on average (0.8 K for CMIP6 mean versus
-
Two-Stream Approximation to the Radiative Transfer Equation: A New Improvement and Comparative Accuracy with Existing Methods Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-12-06 F. Momo Temgoua, L. Akana Nguimdo, D. Njomo
Mathematical modeling of the interaction between solar radiation and the Earth’s atmosphere is formalized by the radiative transfer equation (RTE), whose resolution calls for two-stream approximations among other methods. This paper proposes a new two-stream approximation of the RTE with the development of the phase function and the intensity into a third-order series of Legendre polynomials. This
-
Circulation Pattern Controls of Summer Temperature Anomalies in Southern Africa Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-12-06 Chibuike Chiedozie Ibebuchi, Cameron C. Lee
This study investigates the relationship between circulation patterns and austral summer temperature anomalies in southern Africa. The results show that the formation of continental lows tends to increase the thickness of the lower atmosphere. Further, the distinct variabilities of high and low pressure under the circulation types, influence air mass advection from the adjacent oceans, as well as atmospheric
-
The Spatiotemporal Distribution Characteristics of Cloud Types and Phases in the Arctic Based on CloudSat and CALIPSO Cloud Classification Products Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-12-06 Yue Sun, Huiling Yang, Hui Xiao, Liang Feng, Wei Cheng, Libo Zhou, Weixi Shu, Jingzhe Sun
The cloud type product 2B-CLDCLASS-LIDAR based on CloudSat and CALIPSO from June 2006 to May 2017 is used to examine the temporal and spatial distribution characteristics and interannual variability of eight cloud types (high cloud, altostratus, altocumulus, stratus, stratocumulus, cumulus, nimbostratus, and deep convection) and three phases (ice, mixed, and water) in the Arctic. Possible reasons for
-
Anthropogenic Influence on Decadal Changes in Concurrent Hot and Dry Events over China around the Mid-1990s Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-12-06 Qin Su, Buwen Dong, Fangxing Tian, Nicholas P. Klingaman
The frequency and duration of observed concurrent hot and dry events (HDEs) over China during the growing season (April–September) exhibit significant decadal changes across the mid-1990s. These changes are characterized by increases in HDE frequency and duration over most of China, with relatively large increases over southeastern China (SEC), northern China (NC), and northeastern China (NEC). The
-
Southern Hemisphere Volcanism Triggered Multi-year La Niñas during the Last Millennium Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-12-01 Shangrong Zhou, Fei Liu
To explain the recent three-year La Niña event from 2020 to 2022, which has caused catastrophic weather events worldwide, Fasullo et al. (2023) demonstrated that the increase in biomass aerosol resulting from the 2019–20 Australian wildfire season could have triggered this multi-year La Niña. Here, we present compelling evidence from paleo-proxies, utilizing a substantial sample size of 26 volcanic
-
Will the Globe Encounter the Warmest Winter after the Hottest Summer in 2023? Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-12-01 Fei Zheng, Shuai Hu, Jiehua Ma, Lin Wang, Kexin Li, Bo Wu, Qing Bao, Jingbei Peng, Chaofan Li, Haifeng Zong, Yao Yao, Baoqiang Tian, Hong Chen, Xianmei Lang, Fangxing Fan, Xiao Dong, Yanling Zhan, Tao Zhu, Tianjun Zhou, Jiang Zhu
In the boreal summer and autumn of 2023, the globe experienced an extremely hot period across both oceans and continents. The consecutive record-breaking mean surface temperature has caused many to speculate upon how the global temperature will evolve in the coming 2023/24 boreal winter. In this report, as shown in the multi-model ensemble mean (MME) prediction released by the Institute of Atmospheric
-
A Quasi-Linear Relationship between Planetary Outgoing Longwave Radiation and Surface Temperature in a Radiative-Convective-Transportive Climate Model of a Gray Atmosphere Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-11-25 Jie Sun, Michael Secor, Ming Cai, Xiaoming Hu
In this study, we put forward a radiative-convective-transportive energy balance model of a gray atmosphere to examine individual roles of the greenhouse effect of water vapor, vertical convection, and atmospheric poleward energy transport as well as their combined effects for a quasi-linear relationship between the outgoing longwave radiation (OLR) and surface temperature (TS). The greenhouse effect
-
Simulation of the Ecosystem Productivity Responses to Aerosol Diffuse Radiation Fertilization Effects over the Pan-Arctic during 2001–19 Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-11-25 Zhiding Zhang, Xu Yue, Hao Zhou, Jun Zhu, Yadong Lei, Chenguang Tian
The pan-Arctic is confronted with air pollution transported from lower latitudes. Observations have shown that aerosols help increase plant photosynthesis through the diffuse radiation fertilization effects (DRFEs). While such DRFEs have been explored at low to middle latitudes, the aerosol impacts on pan-Arctic ecosystems and the contributions by anthropogenic and natural emission sources remain less
-
Diagnosis of the Kinetic Energy of the “21·7” Extreme Torrential Rainfall Event in Henan Province, China Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-11-25 Xiuping Yao, Ruoying Li, Xiaohong Bao, Qiaohua Liu
An extreme torrential rain (ETR) event occurred in Henan Province, China, during 18–21 July 2021. Based on hourly rain-gauge observations and ERA5 reanalysis data, the ETR was studied from the perspective of kinetic energy (K), which can be divided into rotational wind (VR) kinetic energy (KR), divergent wind kinetic energy (KD), and the kinetic energy of the interaction between the divergent and rotational
-
Synergistic Interdecadal Evolution of Precipitation over Eastern China and the Pacific Decadal Oscillation during 1951–2015 Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-11-25 Minmin Wu, Rong-Hua Zhang, Junya Hu, Hai Zhi
By using the multi-taper method (MTM) of singular value decomposition (SVD), this study investigates the interdecadal evolution (10- to 30-year cycle) of precipitation over eastern China from 1951 to 2015 and its relationship with the North Pacific sea surface temperature (SST). Two significant interdecadal signals, one with an 11-year cycle and the other with a 23-year cycle, are identified in both
-
Added Benefit of the Early-Morning-Orbit Satellite Fengyun-3E on the Global Microwave Sounding of the Three-Orbit Constellation Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-11-25 Juan Li, Zhengkun Qin, Guiqing Liu, Jing Huang
The three-orbit constellation can comprehensively increase the spatial coverage of polar-orbiting satellites, but the polar-orbiting satellites currently in operation are only mid-morning-orbit and afternoon-orbit satellites. Fengyun-3E (FY-3E) was launched successfully on 5 July 2021 in China. As an early-morning-orbit satellite, FY-3E can help form a complete three-orbit observation system together
-
Case Studies of the Microphysical and Kinematic Structure of Summer Mesoscale Precipitation Clouds over the Eastern Tibetan Plateau Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-11-25 Shuo Jia, Jiefan Yang, Hengchi Lei
Three cases of microphysical characteristics and kinematic structures in the negative temperature region of summer mesoscale cloud systems over the eastern Tibetan Plateau (TP) were investigated using X-band dual-polarization radar. The time-height series of radar physical variables and mesoscale horizontal divergence \(\bar \delta \) derived by quasi-vertical profiles (QVPs) indicated that the dendritic
-
Mechanism of Diabatic Heating on Precipitation and the Track of a Tibetan Plateau Vortex over the Eastern Slope of the Tibetan Plateau Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-11-25 Yuanchang Dong, Guoping Li, Xiaolin Xie, Long Yang, Peiwen Zhang, Bo Zeng
Existing studies contend that latent heating (LH) will replace sensible heating (SH) to become the dominant factor affecting the development of the Tibetan Plateau vortex (TPV) after it moves off the Tibetan Plateau (TP). However, in the process of the TPV moving off the TP requires that the airmass traverse the eastern slope of the Tibetan Plateau (ESTP) where the topography and diabatic heating (DH)
-
Severe Global Environmental Issues Caused by Canada’s Record-Breaking Wildfires in 2023 Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-11-17 Zhe Wang, Zifa Wang, Zhiyin Zou, Xueshun Chen, Huangjian Wu, Wending Wang, Hang Su, Fang Li, Wenru Xu, Zhihua Liu, Jiaojun Zhu
Due to the record-breaking wildfires that occurred in Canada in 2023, unprecedented quantities of air pollutants and greenhouse gases were released into the atmosphere. The wildfires had emitted more than 1.3 Pg CO2 and 0.14 Pg CO2 equivalent of other greenhouse gases (GHG) including CH4 and N2O as of 31 August. The wildfire-related GHG emissions constituted more than doubled Canada’s planned cumulative
-
The Role of Underlying Boundary Forcing in Shaping the Recent Decadal Change of Persistent Anomalous Activity over the Ural Mountains Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-10-21 Ting Lei, Shuanglin Li
Observational analyses demonstrate that the Ural persistent positive height anomaly event (PAE) experienced a decadal increase around the year 2000, exhibiting a southward displacement afterward. These decadal variations are related to a large-scale circulation shift over the Eurasian Continent. The effects of underlying sea ice and sea surface temperature (SST) anomalies on the Ural PAE and the related
-
Understanding and Attribution of Extreme Heat and Drought Events in 2022: Current Situation and Future Challenges Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-10-14 Lixia Zhang, Xiaojing Yu, Tianjun Zhou, Wenxia Zhang, Shuai Hu, Robin Clark
Extreme weather events and their consequential impacts have been a key feature of the climate in recent years in many parts of the world, with many partly attributed to ongoing global-scale warming. The past year, 2022, has been no exception, with further records being broken. The year was marked by unprecedented heatwaves and droughts with highly unusual spatial extent, duration and intensity, with
-
Toward Establishing a Low-cost UAV Coordinated Carbon Observation Network (LUCCN): First Integrated Campaign in China Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-10-02 Dongxu Yang, Tonghui Zhao, Lu Yao, Dong Quo, Meng Fan, Xiaoyu Ren, Mingge Li, Kai Wu, Jing Wang, Zhaonan Cai, Sisi Wang, Jiaxu Guo, Liangfu Chen, Yi Liu
In this study, we introduce our newly developed measurement-fed-perception self-adaption Low-cost UAV Coordinated Carbon Observation Network (LUCCN) prototype. The LUCCN primarily consists of two categories of instruments, including ground-based and UAV-based in-situ measurement. We use the GMP343, a low-cost non-dispersive infrared sensor, in both ground-based and UAV-based instruments. The first
-
CAS-ESM2.0 Successfully Reproduces Historical Atmospheric CO2 in a Coupled Carbon-Climate Simulation Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-09-22 Jiawen Zhu, Juanxiong He, Duoying Ji, Yangchun Li, He Zhang, Minghua Zhang, Xiaodong Zeng, Kece Fei, Jiangbo Jin
The atmospheric carbon dioxide (CO2) concentration has been increasing rapidly since the Industrial Revolution, which has led to unequivocal global warming and crucial environmental change. It is extremely important to investigate the interactions among atmospheric CO2, the physical climate system, and the carbon cycle of the underlying surface for a better understanding of the Earth system. Earth
-
Causes of a Typical Southern Flood and Northern Drought Event in 2015 over Eastern China Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-09-21 Zhuoyuan Li, Qing Yang, Dian Yuan, Er Lu, Zhuguo Ma
The spatial distribution of summer precipitation anomalies over eastern China often shows a dipole pattern, with anti-phased precipitation anomalies between southern China and northern China, known as the “southern flooding and northern drought” (SF-ND) pattern. In 2015, China experienced heavy rainfall in the south and the worst drought since 1979 in the north, which caused huge social and economic
-
Use of Targeted Orographic Smoothing in Very High Resolution Simulations of a Downslope Windstorm and Rotor in a Sub-tropical Highland Location Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-09-19 Peter Sheridan, Anlun Xu, Jian Li, Kalli Furtado
Nested simulations of a downslope windstorm over Cangshan mountain, Yunnan, China, have been used to demonstrate a method of topographic smoothing that preserves a relatively large amount of terrain detail compared to typical smoothing procedures required for models with terrain-following grids to run stably. The simulations were carried out using the Met Office Unified Model (MetUM) to investigate
-
HadlSDH•extremes Part II: Exploring Humid Heat Extremes Using Wet Bulb Temperature Indices Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-09-20 Kate M. Willett
Heat events may be humid or dry. While several indices incorporate humidity, such combined indices obscure identification and exploration of heat events by their different humidity characteristics. The new HadISDH.extremes global gridded monitoring product uniquely provides a range of wet and dry bulb temperature extremes indices. Analysis of this new data product demonstrates its value as a tool for
-
HadISDH.extremes Part I: A Gridded Wet Bulb Temperature Extremes Index Product for Climate Monitoring Adv. Atmos. Sci. (IF 5.8) Pub Date : 2023-09-20 Kate M. Willett
HadISDH.extremes is an annually updated global gridded monthly monitoring product of wet and dry bulb temperature-based extremes indices, from January 1973 to December 2022. Data quality, including spatial and temporal stability, is a key focus. The hourly data are quality controlled. Homogeneity is assessed on monthly means and used to score each gridbox according to its homogeneity rather than to