Beijing Meteorological Bureau

Adaptive observation weighting in TCKF1D-Var for ground-based multi-sensor thermodynamic retrievals prior to nocturnal heavy precipitation over China

Abstract. Ground-based microwave radiometers (GMWRs) and Mie–Raman lidars (MRLs) provide valuable thermodynamic observations for atmospheric profiling, but conventional variational retrieval frameworks typically rely on static observation weighting assumptions that may not adequa...

Characteristics and Mechanism of Water Vapour Resources in the Northern Slope of Kunlun Mountains

ABSTRACT Atmospheric water resources in the northern slope of Kunlun Mountains (NKM) are a crucial limiting factor for regional economic development and ecological security. Consequently, it is urgent to accurately assess the atmospheric water vapour and potential mechanisms in N...

Evaluation of Riming in the P3‐2ice Microphysics Scheme: A Case Study of Cold‐Air Outbreak Snowfall in Eastern China

Abstract Using the multi‐frequency radar suite, ground‐based observations, and the Weather Research and Forecasting (WRF) model with the Predicted Particle Properties microphysics scheme with the version of two‐ice category (P3‐2ice), we study the characteristics of a cold‐air ou...

HailCam: an automated imaging system for real-time measurement of hail size distributions and fall rates

Abstract. Ground-based hail observations with high temporal resolution and precise microphysical quantification remain critically scarce, limiting the validation of radar-based hail detection algorithms and convective-scale numerical models. Existing automatic hail sensors often...

Impact of extreme rainstorm on the spatial distribution of population exposure in Haihe River basin in China

Abstract Based on daily rainfall data from 252 national meteorological stations in the Haihe River Basin of China during 1961–2023, rainstorm events were divided, and four characteristic variables representing the hazard index of rainstorms were statistically analyzed, including...

The Shape-SelectiveSuspension–Deposition Differentiationof Microplastics in an Air–Snow System: Insights from a NortheasternPolluted City in China

Abstract Atmospheric microplastics (MPs) are increasingly recognized as important atmospheric pollutants, yet the role of particle physical properties in their suspension–deposition differentiation remains unclear. Here, MPs were simultaneously investigated in 31 total-suspended-...