Results 111 to 120 of about 1,864 (260)

Stochastic parameterization: uncertainties from convection [PDF]

, 2011
In 2005, the ECMWF held a workshop on stochastic parameterisation, at which the convection was seen as being\ud a key issue. That much is clear from the working group reports and particularly the statement from working group\ud 1 that “it is clear that a stochastic convection scheme is desirable”. The present note aims to consider our current\ud status
Plant, R. S., Keane, Richard John, Tennant, W J, Whitall, M A W   +3 more
openaire  

Significance of Size‐Dependent Hygroscopicity Parameterization for Aerosol‐Cloud Interactions

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract Aerosol‐cloud interactions (aerosol indirect effects) are the most significant source of uncertainties in the effective radiative forcing (ERF) due to aerosols which can act as cloud condensation nuclei (CCN). Uncertainties in the indirect effect can result from systematic uncertainties in aerosol water uptake (hygroscopicity).
Kanishk Gohil, Andrew Gettelman, Akua Asa‐Awuku   +2 more
wiley   +1 more source

Evaluating Tropical Cyclone Representation in ERA5‐Driven NARCliM2.0 WRF Simulations Over CORDEX‐Australasia Using Multiple Trackers

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract We evaluate tropical cyclone (TC) representation in CORDEX ERA5‐driven simulations from the New South Wales and Australian Regional Climate Modelling Project (NARCliM2.0) over the Australian region at ∼20 km resolution for the period 1980–2020.
Jyothi Lingala, Jatin Kala, Giovanni Di Virgilio, Fei Ji, Eugene Tam, Julia Andrys, Stephen White, Carlos Vieira Rocha, Dipayan Choudhury, Yue Li, Matthew L. Riley, Jason P. Evans, Christopher Thomas   +12 more
wiley   +1 more source

Development and Evaluation of an Urban Atmospheric Inverse Modeling Framework for the Washington, DC and Baltimore, MD Metropolitan Area: Initial Results From an Inert Tracer Case Study

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract Accurate quantification of hazardous material releases in cities is critical for emergency managers aiming to mitigate health impacts and mortality in the population. Here, a study on the development and evaluation of a high‐resolution (1‐km, 1‐hr) urban‐scale atmospheric inverse modeling system for the Washington, DC, and Baltimore, MD ...
Miguel Cahuich‐López, Christopher P. Loughner, Fong Ngan, Anna Karion, Lei Hu, Israel Lopez‐Coto, Kimberly Mueller, Julia K. Marrs, Arlyn Andrews, John Miller, Brian C. McDonald, Colin Harkins, Congmeng Lyu, Meng Li, Kevin R. Gurney, Mark Cohen, Howard Diamond, Ariel Stein, James Whetstone   +18 more
wiley   +1 more source

Impact of Convective Intensity on Mixed‐Phase Evolution and Upper Positive Charge Region Formation in an Isolated Convective Cloud

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract Lightning initiation depends on the charge separation within the mixed‐phase areas of convective clouds, where graupel, ice, and supercooled water interact. However, the specific mixed‐phase structures that enhance charge separation remain unclear.
M. Kondo, T. Ushio
wiley   +1 more source

The Thermodynamic and Kinematic Structure of the Planetary Boundary Layer for a Summer Lake Breeze Day in Chicago

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract The planetary boundary layer (PBL) over Chicago is strongly modulated by interactions between the lake breeze and the urban heat island (UHI). This study focuses on characterizing the thermodynamic and kinematic processes governing the Chicago UHI and its interaction with the cooler air from Lake Michigan.
Robert Jackson, Joseph O’Brien, Jiali Wang, Dimitrios K. Fytanidis, Rao Kotamarthi, Paytsar Muradyan, Maxwell Grover, Bhupendra Raut, Scott Collis, Matthew Tuftedal, Greg Anderson, Timothy J. Wagner, Stephen W. Nesbitt, Haochen Tan, Daniel Wefer, Molly Hammond   +15 more
wiley   +1 more source

Improved Precipitation Diurnal Cycle in GFDL Climate Models With Non‐Equilibrium Convection

Journal of Advances in Modeling Earth Systems
Most global climate models with convective parameterization have trouble in simulating the observed diurnal cycle of convection. Maximum precipitation usually happens too early during summertime, especially over land. Observational analyses indicate that
Bosong Zhang, Leo J. Donner, Ming Zhao, Zhihong Tan   +3 more
doaj   +1 more source

Vertical Wind‐Pressure Covariance and its Vertical Gradient in Atmospheric Boundary Layers From Large Eddy Simulations

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Atmospheric wind‐pressure covariances (e.g., vertical wind‐pressure covariance, w′p′‾ $\overline{{w}^{\mathit{\prime }}{p}^{\mathit{\prime }}}$) affect boundary‐layer energetics and pressure‐related corrections, yet their sign and vertical structure are inconsistently reported.
Yanzhao Zhou, Heping Liu, Xin Li
wiley   +1 more source

Weak Tropical Tropospheric OH Response to Idealized ENSO

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract The hydroxyl radical (OH) is a key oxidant for methane. Previous studies suggest that OH exhibits interannual variability linked to the El Nino–Southern Oscillation (ENSO), but the sign, magnitude, and underlying mechanisms of this response remain uncertain.
Qindan Zhu, Arlene M. Fiore, Robert Pincus, Jian Guan, Clare E. Singer, Brian Medeiros, Paolo Giani   +6 more
wiley   +1 more source

Development and Application of a New Convective Entrainment Rate Parameterization for Improving Precipitation Simulation Over the Tibetan Plateau and Its Surrounding Areas

Journal of Advances in Modeling Earth Systems
The Tibetan Plateau (TP) significantly impacts the global climate. TP's unique geographical conditions make it one of the areas with the largest precipitation biases in numerical models.
Junjun Li, Chunsong Lu, Jinghua Chen, Jian Li, Jing Yang, Xiaoqi Xu, Lei Zhu, Xin He, Shiying Wu   +8 more
doaj   +1 more source