Results 31 to 40 of about 57,002 (295)
Influence of stratospheric sudden warming on the tropical intraseasonal convection
Environmental Research Letters, 2020 Madden–Julian oscillation (MJO), the dominant mode of intraseasonal variability in the tropical troposphere, has recently been shown to have a great impact on Northern Hemisphere (NH) extratropical stratosphere.
Feiyang Wang +3 more
doaj +1 more source
Tropical Cirrus in Global Storm‐Resolving Models: 1. Role of Deep Convection
Earth and Space Science, 2022 Pervasive cirrus clouds in the upper troposphere and tropical tropopause layer (TTL) influence the climate by altering the top‐of‐atmosphere radiation balance and stratospheric water vapor budget.
J. M. Nugent +4 more
doaj +1 more source
Impact of deep convection in the tropical tropopause layer in West Africa: in-situ observations and mesoscale modelling [PDF]
, 2010 We present the analysis of the impact of convection on the composition of the tropical tropopause layer region (TTL) in West-Africa during the AMMA-SCOUT campaign. Geophysica M55 aircraft observations of water vapor, ozone, aerosol and CO2 show perturbed
Borrmann, Stephan +9 more
core +6 more sources
Implications of large scale shifts in tropospheric NOx levels in the remote tropical Pacific [PDF]
, 1997 A major observation recorded during NASA's western Pacific Exploratory Mission (PEM-West B) was the large shift in tropical NO levels as a function of geographical location.
Anderson, B +15 more
core +2 more sources
Trimodal Characteristics of Tropical Convection [PDF]
Journal of Climate, 1999 It has long been known that trade wind cumulus and deep cumulonimbus represent primary components of the broad spectrum of cumulus clouds in the Tropics, which has led to the concept of a bimodal distribution of tropical clouds. However, recent analyses of shipboard radar data from Tropical Ocean Global Atmosphere Coupled Ocean‐Atmosphere Response ...
Richard H. Johnson +4 more
openaire +1 more source
Mesoscale convective clustering enhances tropical precipitation
Science Advances, 2023 In the tropics, extreme precipitation events are often caused by mesoscale systems of organized, spatially clustered deep cumulonimbi, posing a substantial risk to life and property. While the clustering of convective clouds has been thought to strengthen precipitation rate, no quantitative estimates of this hypothesized enhancement exist.
Pedro Angulo-Umana, Daehyun Kim
openaire +2 more sources
Journal of Advances in Modeling Earth Systems, 2017 We implement a Stochastic Multicloud Model (SMCM) in an observation‐informed configuration into the convection scheme of the state‐of‐the‐art GCM ECHAM6.3.
Karsten Peters +3 more
doaj +1 more source
Convective Precipitation Efficiency Observed in the Tropics
Geophysical Research Letters, 2019 AbstractPrecipitation efficiency refers to the fraction of condensate in the atmosphere that reaches the surface as precipitation. A high‐quality data set of radar‐estimated precipitation rates and convective scale vertical velocity near Darwin, Australia, is used to construct the first estimate of precipitation efficiency at convective scales for a ...
Narsey, S. +6 more
openaire +2 more sources
Impact of Domain Size on Tropical Precipitation Within Explicit Convection Simulations
Geophysical Research Letters, 2023 We investigate the sensitivity of modeled tropical precipitation accumulation, intensity and structures to the extent of convection‐permitting limited area model (LAM) domain size.
Richard W. Jones +5 more
doaj +1 more source
Sensitivity of tropical deep convection in global models: Effects of horizontal resolution, surface constraints, and 3D atmospheric nudging [PDF]
, 2015 We investigate the ability of global models to capture the spatial patterns of tropical deep convection. Their sensitivity is assessed through changing horizontal resolution, surface flux constraints, and constraining background atmospheric conditions ...
Chemel, C +4 more
core +2 more sources