China Meteorological Administration

The Role of Local Wave Activity in Influencing Extreme Precipitation Patterns Over North and Northeast China

ABSTRACT Warm‐season extreme precipitation over North and Northeast China is a major regional hazard and is strongly influenced by large‐scale atmospheric circulation. However, how large‐amplitude wave activity varies among different spatial patterns of extreme precipitation rema...

Contrast in the Boundary Layer Convergence Lines at Desert−Oasis Border With Different Vegetation Gradient

Abstract Motivated by an observed asymmetry in boundary layer convergence lines (BLCLs) between the Kubuqi and Ulan Buh desert borders of the Hetao Oasis in northern China, this work aims to document the differences in BLCL frequency and convective initiation and their potential...

Evaluation for Optimal Model Selection and Bias-Corrected Projections of Daytime and Nighttime Extreme Heat in China Using the SimmEX Dataset

Global warming has intensified extreme heat events, posing growing climate risks. As a climate-sensitive region, China has experienced compound daytime and nighttime extreme heat, threatening health, ecosystems, and socioeconomic development. Accurate projections of future extrem...

China regional 3 km downscaling based on residual Corrective Diffusion model

A fundamental challenge in numerical weather prediction is efficiently producing high-resolution forecasts. A widely adopted solution is to downscale coarser global model outputs. This study focuses on statistical downscaling, which uses historical data to learn mappings between...

Analysis of the Characteristics of a Microburst Event at Urumqi Airport Based on Microwave Radiometer and Doppler Wind Lidar

Microbursts can cause severe low-level wind shear, posing a threat to aviation safety. However, due to their small scale, they are difficult to capture by conventional equipment such as surface Automated Weather Observing Systems (AWOS) and Doppler weather radar. On 25 June 2022,...

Multi-Horizon Typhoon Wind Field Prediction via a Lightweight CNN–LSTM Network: Error Growth and Cross-Year Robustness at 6–24 h Lead Times

Short-term typhoon wind-field prediction across multiple lead times is challenging because forecast error grows with lead time and inappropriate sample construction may leak future storm-position information. We adopt STL-Net, a lightweight spatiotemporal framework integrating co...

Impacts of South Asian aerosol inflow over Mount Qomolangma on downstream cloud–precipitation processes through a long-range ice-crystal “seeding” effect

Mount Qomolangma (MQ) serves as a natural laboratory for investigating aerosol–cloud–precipitation interactions over the Tibetan Plateau (TP). Using satellite and comprehensive ground-based observations, we identify pronounced ice-cloud activation associated with transported exog...

Evaluation of the accuracy and response to recorded irrigation events of remote sensing and reanalysis soil moisture products in a typical irrigation district

Soil moisture (SM) plays a critical role in the land–atmosphere water cycle and agricultural water resource management. However, the applicability of prevalent SM products in typical irrigation districts remains insufficiently assessed. In this study, two in situ SM observation n...

Coupling Analysis of Multiple Meteorological Elements and Atmospheric Electric Field in the Lower and Middle Atmosphere (Troposphere and Stratosphere)

Severe convective weather can generate strong electrostatic fields and electromagnetic radiation, significantly inducing electrification processes in the lower and middle atmosphere (0–45 km) and perturbing space charge distributions. The perturbations to the lower-atmospheric el...

Estimating Ground-Level PM2.5 over Beijing–Tianjin–Hebei from DQ-1 Wide-Swath Imager Signals and ERA5 Meteorology Using Physics-Guided Feature Engineering

The DaQi-1 (DQ-1) Wide-Swath Imager (WSI) combines an approximately 2300 km swath with 15 visible-to-shortwave-infrared channels at 75–600 m resolution, providing broad regional coverage and flexible spectral support. We developed an ExtraTrees estimator from WSI signals and ERA5...

Evaluating Effectiveness and Economic Benefits of Meteorological Health Warning Systems: A Case Study of Stroke Warnings in Tianjin, China

Abstract Meteorological health warning systems have received global attention for their role in climate health adaptation. However, existing evaluation studies rarely considered nonlinear and time-lagged relationships between meteorological factors and health outcomes. Calculatio...

Terrain‐Induced Contrasts in the Diurnal Variations of Low‐Level Jets Over the Middle Reaches of the Yangtze River During the 2010 Mei‐yu Field Campaign

Abstract The diurnal cycle of low‐level jets (LLJs) plays a crucial role in severe convective weather during the Mei‐yu season over the middle reaches of the Yangtze River (MRYR). However, previous studies have focused on individual sites or large‐scale climatic contrasts, leavin...

Drought dynamics and climatic drivers in the Tarim Basin using remote sensing indices and pixel-wise machine learning

Abstract Drought characterization in hyper-arid endorheic basins requires multi-index approaches that capture distinct hydrometeorological processes. This study investigates spatio-temporal drought dynamics in the Tarim Basin (TB)—China’s largest inland arid region—using two comp...

A new data-driven model for rapid urban low-level wind field simulation using conditional generative adversarial networks

Rapid and accurate representation of urban low-altitude wind fields is essential for understanding urban wind environments, assessing ventilation performance, and supporting emerging low-altitude aviation applications. Conventional computational fluid dynamics (CFD) provides reli...

Capturing Typhoon Rapid Intensification and Abrupt Recurvature Using an IAU‐Based 4DVar Scheme

Abstract Dynamic imbalances in model initialization severely constrain the predictability of the rapid intensification (RI) and abrupt track recurvature of tropical cyclones (TCs). In this study, the effectiveness of an incremental analysis update (IAU)‐based four‐dimensional var...

Extratropical teleconnections in a multi-model ensemble nudged towards the observed QBO

The Quasi-Biennial Oscillation (QBO), the dominant mode of interannual variability of monthly-mean zonal winds and temperatures in the equatorial stratosphere, has a significant influence on the circulation in other regions of the stratosphere and troposphere in boreal winter. To...

Environmental modulation of competition effects on intra-seasonal radial growth in planted larch forests of north China

Competition and hydrothermal conditions jointly regulate tree growth, yet competitive effects are commonly assumed to be temporally constant and are usually assessed at annual scales. Such approaches may obscure periods within the growing season when competition becomes growth-li...

The Characteristics of Flood‐Drought Abrupt Alternation in North China During Midsummer and Its Response to Atlantic Sea Surface Temperature

ABSTRACT Based on the ERA5 reanalysis data, precipitation data provided by the China Meteorological Administration, and the Met Office Hadley Center Sea Ice and SST dataset, this study investigates the characteristics of midsummer flood‐drought abrupt alternation (FDAA) in North...

Estimation of Soil Total Nitrogen in Hemerocallis citrina Across Multiple Phenological Stages Using Partitioned Feature Bands

Rapid and non-destructive monitoring of soil total nitrogen (STN) is important for precision nutrient management in ecologically fragile agricultural systems. This study established a controlled spectral resampling experiment to simulate the multispectral responses of Sentinel-2,...

Flavor quality evaluation and discrimination of regional tea (Camellia sinensis L.) based on metabolomics, volatileomics, and machine learning

This study aimed to elucidate the differences in the composition of the flavor molecular basis of fresh tea leaves ( Camellia sinensis L.) from different regions and their potential for geographical discrimination. The samples from eight representative producing areas across Chin...