Effect of deep convection on the tropical tropopause layer composition over the southwest Indian Ocean during austral summer [PDF]
Atmospheric Chemistry and Physics, 2020 Balloon-borne measurements of cryogenic frost-point hygrometer (CFH) water vapor, ozone and temperature and water vapor lidar measurements from the Maïdo Observatory on Réunion Island in the southwest Indian Ocean (SWIO) were used to study tropical ...
S. Evan +14 more
doaj +1 more source
Environmental Impact of Silicic Magmatism in Large Igneous Province Events
Geophysical Monograph Series, Page 133-151., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Scott E. Bryan
wiley +1 more source
Effect of tropical cyclones on the tropical tropopause parameters observed using COSMIC GPS RO data [PDF]
Atmospheric Chemistry and Physics, 2015 Tropical cyclones (TCs) are deep convective synoptic-scale systems that play an important role in modifying the thermal structure, tropical tropopause parameters and hence also modify stratosphere–troposphere exchange (STE) processes.
S. Ravindra Babu +4 more
doaj +1 more source
Influences of Sudden Stratospheric Warming Events on Tropopause Based on GNSS Radio Occultation Data
Atmosphere, 2023 Sudden Stratospheric Warming (SSW) events have a strong impact on the tropospheric weather and climate. Past researchers have carried out extensive studies investigating the theories of interactions between the stratosphere and the troposphere.
Yifan Wang +4 more
doaj +1 more source
Stable water isotope signals in tropical ice clouds in the West African monsoon simulated with a regional convection-permitting model [PDF]
Atmospheric Chemistry and Physics, 2022 Tropical ice clouds have an important influence on the Earth's radiative balance. They often form as a result of tropical deep convection, which strongly affects the water budget of the tropical tropopause layer.
A. J. de Vries +3 more
doaj +1 more source
Interannual variability of tropical tropopause layer clouds [PDF]
Geophysical Research Letters, 2013 The quasi‐biennial oscillation (QBO), El Niño Southern Oscillation (ENSO), and upwelling in the tropical branch of the Brewer‐Dobson circulation (BDC) impact tropical tropopause layer (TTL, 14–19 km) temperature (T) and relative humidity (RH), and thus it is likely that they also affect the TTL cloud distribution.
Sean M. Davis +2 more
openaire +1 more source
Weakening of the tropical tropopause layer cold trap with global warming [PDF]
Atmospheric Chemistry and Physics, 2023 Lagrangian trajectories have previously been used to reconstruct water vapor variability in the lower stratosphere, where the sensitivity of surface radiation to changes in the water vapor concentration is strongest, by obtaining temperature histories of
S. Bourguet, M. Linz, M. Linz
doaj +1 more source
Modelling deep convection and its impacts on the tropical tropopause layer [PDF]
Atmospheric Chemistry and Physics, 2010 The UK Met Office's Unified Model is used at a climate resolution (N216, ~0.83°×~0.56°, ~60 km) to assess the impact of deep tropical convection on the structure of the tropical tropopause layer (TTL). We focus on the potential for
J. S. Hosking +3 more
doaj +1 more source
Effect of tropical cyclones on the stratosphere–troposphere exchange observed using satellite observations over the north Indian Ocean [PDF]
Atmospheric Chemistry and Physics, 2016 Tropical cyclones play an important role in modifying the tropopause structure and dynamics as well as stratosphere–troposphere exchange (STE) processes in the upper troposphere and lower stratosphere (UTLS) region. In the present study, the impact of
M. Venkat Ratnam +5 more
doaj +1 more source
Can overshooting convection dehydrate the tropical tropopause layer? [PDF]
Journal of Geophysical Research: Atmospheres, 2007 A numerical model is used to investigate the potential for irreversible dehydration near the tropical tropopause caused by overshooting deep convection. We show that convective updrafts overshooting the cold point tropopause can generate extremely cold, dry air within the updrafts.
E. J. Jensen +2 more
openaire +1 more source