The cloud processes of a simulated moderate snowfall event in North China

Lin, Wenshi; Bueh, Cholaw

doi:10.1007/s00376-006-0235-7

Cited by 4 publications

(2 citation statements)

References 17 publications

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“…Considering that the frequency and intensity of cold advection invading eastern China are closely associated with the SH [42,43], the synoptic evolution of SH during the ISEs in the NC and YRV regions are computed. As shown in Figure 7, an above-normal SH was observed during the ISEs in the NC and YRV regions (Figure 7a,b).…”

Section: Synoptic Evolution Of Cold Advectionmentioning

confidence: 99%

Different Roles of Water Vapor Transport and Cold Advection in the Intensive Snowfall Events over North China and the Yangtze River Valley

Xie

Sun

2019

Atmosphere

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Intensive snowfall events (ISEs) have a profound impact on the society and economy in China during winter. Considering that the interaction between northerly cold advection and southerly water vapor transport (WVT) is generally an essential condition for the occurrence of ISEs in eastern China, this study investigates the different roles of anomalous southerly WVT and northerly cold advection during the ISEs in the North China (NC) and Yangtze River valley (YRV) regions based on a composite analysis of seventy ISE cases in NC and forty ISE cases in the YRV region from 1961 to 2014. The results indicate that the ISEs in NC are mainly associated with a significant pre-conditioning of water vapor over NC induced by southerly WVT anomalies over eastern China, whereas the ISEs in the YRV region are mainly associated with a strengthened Siberian High (SH) and strong northerly cold advection invading the YRV region. These results suggest a dominant role of anomalous southerly WVT in triggering the ISEs in NC and a dominant role of northerly cold advection in triggering the ISEs in the YRV region. The different roles of anomalous southerly WVT and northerly cold advection in the ISEs over the NC and YRV regions are largely attributed to the different winter climate in the NC and YRV regions—during winter, the NC (YRV) region is dominated by cold and dry (relatively warm and moist) air flow and hence southerly WVT (northerly cold advection) is the key factor for triggering the ISEs in NC (the YRV region).

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Section: Synoptic Evolution Of Cold Advectionmentioning

confidence: 99%

Different Roles of Water Vapor Transport and Cold Advection in the Intensive Snowfall Events over North China and the Yangtze River Valley

Xie

Sun

2019

Atmosphere

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“…Heavy snowfall is mainly caused by cold cloud processes, and the ice-phase cloud microphysics process plays a very important role in the formation of heavy snowfall. Therefore, it is important to study the microphysics process of ice-phase cloud and the parameterization scheme of cloud microphysics for improved prediction of heavy snowfall events (Lin and Bueh, 2006). Currently, there are very large uncertainties regarding both the characteristics of ice-phase particles within clouds and the ice-phase cloud microphysical processes.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of bin and bulk microphysical schemes in simulating a heavy snowfall event that occurred in Beijing during the 2022 Winter Olympic Games

Ping

et al. 2023

Front. Earth Sci.

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A heavy snowfall event that struck Beijing during February 12-13, 2022, affected some of the training sessions and events of the Winter Olympic Games. This heavy snowfall event was simulated using the Advanced Research Weather Research and Forecasting Model with both the two-moment bulk scheme (BULK) and the spectral bin microphysics scheme (BIN), and the differences in surface precipitation, radar reflectivity, and cloud microphysics processes were compared and analyzed. It was found that surface precipitation was dominated by solid precipitation particles. The 24-h accumulated precipitation of the BULK simulation was larger than that of the BIN simulation, but both were smaller than that observed. The BIN simulation was closer to the observations in terms of the trends of variation in precipitation rate and radar reflectivity during the period of heavy precipitation. The maximum and minimum vertical velocities of the BIN simulation were notably higher than those of the BULK simulation, and the water vapor content of the BIN scheme at the heights of the −10 to −20°C levels and above the −38°C level was substantially higher than that of the BULK scheme. The contents of cloud water and snow simulated by the BIN scheme were much higher than those simulated by the BULK scheme. The nucleation of ice crystals in the middle and high layers of the BULK scheme was obvious, whereas such a process was not evident in the BIN scheme. The net production rate of ice crystals and snow simulated by the BULK scheme was stronger near the surface than that simulated by the BIN scheme, and a second peak in the conversion rate existed at heights very close to the surface below 1 km, which might account for the greater intensity of precipitation in the BULK scheme. The latent heat simulated by the BULK scheme was larger (smaller) than that simulated by the BIN scheme below (above) the height of 2 km.

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Numerical comparison study of cloud microphysical parameterization schemes for a moderate snowfall event in North China

Lin¹,

Sui

Bueh

et al. 2006

Meteorol. Atmos. Phys.

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The cloud processes of a simulated moderate snowfall event in North China

Cited by 4 publications

References 17 publications

Different Roles of Water Vapor Transport and Cold Advection in the Intensive Snowfall Events over North China and the Yangtze River Valley

Different Roles of Water Vapor Transport and Cold Advection in the Intensive Snowfall Events over North China and the Yangtze River Valley

Comparative study of bin and bulk microphysical schemes in simulating a heavy snowfall event that occurred in Beijing during the 2022 Winter Olympic Games

Numerical comparison study of cloud microphysical parameterization schemes for a moderate snowfall event in North China

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