Results 121 to 130 of about 57,002 (295)

Is the Tropical Atmosphere in Convective Quasi-Equilibrium?

Journal of Climate, 2015
AbstractThe hypothesis of convective quasi-equilibrium (CQE) has dominated thinking about the interaction between deep moist convection and the environment for at least two decades. In this view, deep convection develops or decays almost instantly to remove any changes of convective instability, making the tropospheric temperature always tied to the ...
Taotao Qian, Jia-Lin Lin, Toshiaki Shinoda, Shuanglin Li   +3 more
openaire   +1 more source

Assimilation of European and global Mode‐S aircraft observations into the Met Office global deterministic numerical weather prediction model

Quarterly Journal of the Royal Meteorological Society, EarlyView.
European and global Mode‐S aircraft reports have been assimilated into the Met Office global deterministic numerical weather prediction model, improving forecast accuracy for wind, temperature, and geopotential height. This is the first time global Mode‐S network data have been assimilated, which include data from under‐observed regions, and has ...
Elliott Warren, Warren Tennant, Edmund Stone, Joanne Waller, Christopher Thomas, Adam Maycock   +5 more
wiley   +1 more source

Precipitation Characteristics and Thermodynamic‐Convection Coupling in Global Kilometer‐Scale Simulations

Journal of Advances in Modeling Earth Systems
We compare three global kilometer‐scale models (ICON, IFS and NICAM) to clarify the advantages and challenges of high‐resolution global weather and climate modeling, using different approaches to represent convection, from fully parameterized to fully ...
Daisuke Takasuka, Tobias Becker, Jiawei Bao   +2 more
doaj   +1 more source

Sensitivity of tropical orographic precipitation to wind speed with implications for future projections [PDF]

Weather and Climate Dynamics
Some of the rainiest regions on Earth lie upstream of tropical mountains, where the interaction of prevailing winds with orography produces frequent precipitating convection.
Q. Nicolas, Q. Nicolas, W. R. Boos, W. R. Boos   +3 more
doaj   +1 more source

Impact of Convectively Detrained Ice Crystals on the Tropical Upper Troposphere and Lower Stratosphere [PDF]

The role of convectively detrained ice crystals on the humidity of the tropical upper troposphere and lower stratosphere (UTLS) is investigated in simulations of cirrus clouds along trajectories launched from the 378K potential temperature level in the ...
Jensen, Eric, Krämer, Martina, Pfister, Leonhard, Schoeberl, Mark, Ueyama, Rei   +4 more
core   +1 more source

Assessing the impact of model biases on subseasonal forecast skill

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Relaxation experiments where the nudging was performed towards bias‐corrected integrations of the same model display significantly improved skill at weeks 3 and 4, particularly in the northern extratropics. This indicates that there is a large potential for improving dynamical subseasonal forecasting skill by improved treatment of model biases.
Frédéric Vitart, Magdalena Balmaseda
wiley   +1 more source

Dynamical Downscaling of Climate Simulations in the Tropics

Geophysical Research Letters
The long‐existing double‐Intertropical Convergence Zone (ITCZ) problem in global climate models (GCMs) hampers accurate climate simulations in the tropics. Using a regional climate model (RCM) over the tropical and sub‐tropical Atlantic with a horizontal
Shuchang Liu, Christian Zeman, Christoph Schär   +2 more
doaj   +1 more source

A new modelling framework for statistical cumulus dynamics [PDF]

, 2011
We propose a new modelling framework suitable for the description of atmospheric convective systems as a collection of distinct plumes. The literature contains many examples of models for collections of plumes in which strong simplifying assumptions are ...
Landau L. D., van Kampen N. G.
core   +2 more sources

Medicane characteristics from high‐resolution satellite radar observations

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study uses high‐resolution observations from satellite synthetic aperture radar (SAR) to reveal that medicanes, cyclones with tropical features in the Mediterranean basin, have dynamical characteristics with attributes comparable with those of tropical cyclones of similar intensities, but smaller outer sizes and Rossby numbers.
Arthur Avenas, Mario Marcello Miglietta, Alexis Mouche, Stavros Dafis, Aurélien Colin, Romain Husson, Emmanouil Flaounas   +6 more
wiley   +1 more source

Longwave Radiative Feedback Due To Stratiform and Anvil Clouds

Geophysical Research Letters
Studies have implicated the importance of longwave (LW) cloud‐radiative forcing (CRF) in facilitating or accelerating the upscale development of tropical moist convection. While different cloud types are known to have distinct CRF, their individual roles
Emily Luschen, James Ruppert
doaj   +1 more source