SCIENTIA SINICA Terrae, Journal Year: 2023, Volume and Issue: 54(3), P. 874 - 891
Published: Dec. 26, 2023
Geophysical Research Letters, Journal Year: 2023, Volume and Issue: 50(23)
Published: Nov. 30, 2023
Abstract One of the major factors controlling phase partitioning in mixed‐phase cloud is entrainment mixing, but it still poorly understood. In this study, liquid‐ice mass across edge shallow to moderately deep cumulus clouds are analyzed using airborne measurements. The results show concentration and water content both liquid ice decrease toward edge. However, fraction remains similar cloud. mechanism responsible for that extreme inhomogeneous entrainment‐mixing dominates. This evident as droplet sizes remain with changing concentrations. comparison between time scale turbulent mixing relaxation also suggests turbulence strength too low homogenize findings from study improve our understanding on role partitioning, useful evaluating model simulations.
Language: Английский
Citations
5
Environmental Research Letters, Journal Year: 2024, Volume and Issue: 19(4), P. 044047 - 044047
Published: March 19, 2024
Abstract Terrestrial evapotranspiration plays a critical role in drought monitoring and water resource management. Changes are significantly influenced by cloud-related precipitation radiation effects. However, the impact of cloud amount (CA) on through its influence remains uncertain, especially transition zone affected East Asian summer monsoon (EASM), which limits understanding cycle. Therefore, this study deeply explores CA potential physical mechanisms Northwest China. The results show that correlation between 31-year average is negative only semi-arid region positive other climatic regions This unique related to change pattern caused weak EASM. Smaller monsoons more short-wave reaching surface, larger sensible heat, weaker convective inhibition. Consequently, proportion clouds (CCs) increases from these CCs enhances evapotranspiration. Less potentially exacerbates aridity These emphasize type It well known global warming can with CCs. sheds new light under warming.
Language: Английский
Citations
1
Quarterly Journal of the Royal Meteorological Society, Journal Year: 2024, Volume and Issue: 150(763), P. 3703 - 3720
Published: June 26, 2024
Abstract Based on numerical simulation, this study investigates the relationship between environmental factors and microphysical variables of a heavy precipitation event in Suizhou August 12, 2021, aiming to provide reference for studying interaction mechanisms physical processes involved at different scales. The results demonstrate that instability give an early indication occurrence play crucial role connecting middle/upper layers with water vapor uplift lower before during events. Most peak/valley values both occur simultaneously those hourly time series. vertical profile reveals that, precipitation, there is initial strengthening ascending movement middle upper troposphere, leading increase ice‐phase particles cloud within these layers. Additionally, gravity sedimentation melting significantly contribute increased rainwater content When occurs, intensified velocity, vorticity, convergence decrease cloud/rain particles' peak height graupel height. This leads prolonged collision process heightened rainfall intensity. Furthermore, enhanced promotes raindrops formation through colliding coalescing droplets. By comparing variables/factors extreme general it suggested strengthened self‐feedback mechanism latent heat release vorticity may be one reasons rainfall.
Language: Английский
Citations
1
Atmospheric Pollution Research, Journal Year: 2023, Volume and Issue: 15(3), P. 102032 - 102032
Published: Dec. 30, 2023
Language: Английский
Citations
2
Atmosphere, Journal Year: 2023, Volume and Issue: 14(11), P. 1680 - 1680
Published: Nov. 13, 2023
To investigate the impact of advanced microphysics schemes using single and double moment (WSM6/WDM6) schemes, numerical simulations are conducted Weather Research Forecasting (WRF) model for a severe mesoscale convective system (MCS) formed over Korean Peninsula. Spatial rainfall distribution pattern correlation linked with improved in WDM6 simulation. During developing stage system, total hydrometeors is larger compared to WSM6. Along mixing ratio (cloud, rain, graupel, snow, ice), number concentration cloud rainwater also predictable WDM6. understand differences vertical representation between rain (Nr) from WSM6 computed particle density compare Nr readily available Varied large mass evident schemes. Inclusion cloud, CCN, along different hydrometers has storm morphology Furthermore, latent heating (LH) profiles six major phase transformation processes (condensation, evaporation, freezing, melting, deposition, sublimation) microphysical production terms deeply study structure. The main condensation evaporation due varied treatment warm inclusion CCN activation cloud–aerosol interactions, simulation by increasing (aerosol) WDM6, which simulated comparatively intense hydrometer distribution. It can be inferred that change aerosol increased LH freezing affected warming cooling processes, distribution, subsequent rainfall. Relatively, profile more consistent ERA5 moisture source sink formulation processes.
Language: Английский
Citations
2
Atmospheric Research, Journal Year: 2024, Volume and Issue: 303, P. 107346 - 107346
Published: March 15, 2024
Language: Английский
Citations
0
Advances in Atmospheric Sciences, Journal Year: 2024, Volume and Issue: unknown
Published: July 17, 2024
Language: Английский
Citations
0
Quarterly Journal of the Royal Meteorological Society, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 15, 2024
Abstract Monsoon intraseasonal transitions are intrinsically chaotic; hence, their predictability is limited. In the past majority of studies were conducted solely keeping in account dynamic prospective like boreal summer oscillation or Madden–Julian oscillation; however its thermodynamic aspect got limited attention. The current study looks at internal mechanisms pertaining to monsoon transition using two independent sets reanalysis data (European Centre for Medium‐range Weather Forecasts Reanalysis version 5 and Indian Data Assimilation Analysis), along with observed cloud type from Met Office Integrated Archive System Land Marine surface station data. A lead–lag composite analysis shows that midtropospheric warming by diabatic heating a thermal control restrict deepening convective (cumulonimbus) as wet spell progresses. This midtroposhperic cuts off formation deep clouds results relatively shallow clouds, such stratocumulus stratus. On other hand, forcing during dry spells humidifies troposphere detrainment convection cumulus congestus clouds. facilitates preconditioning atmosphere onset cumulonimbus comprehensive approach used this work may further help identifying limitation period numerical weather prediction models.
Language: Английский
Citations
0
Geophysical Research Letters, Journal Year: 2024, Volume and Issue: 52(1)
Published: Dec. 27, 2024
Abstract Turbulent entrainment‐mixing processes profoundly influence the relationship between radar reflectivity factor and liquid water content ( Z ‐LWC) of cloud droplets. However, quantification mechanisms based on ‐LWC is still lacking. To address this gap, 12,218 cases are simulated using Explicit Mixing Parcel Model. We examine variations parameters in power‐law = a LWC b , parameter homogeneous mixing degree ψ ), measure quantifying processes. The results indicate that distributes within range 1–2, with positive correlation . ‐ fitted, which connects for various types. suggest potential employing remote sensing approach to investigate non‐precipitating small cumulus/stratocumulus clouds, thereby overcoming limitations traditional observational studies rely solely aircraft observations.
Language: Английский
Citations
0
SCIENTIA SINICA Terrae, Journal Year: 2023, Volume and Issue: 54(3), P. 874 - 891
Published: Dec. 26, 2023
Citations
0