Results 21 to 30 of about 700 (138)
Observations of ozone-poor air in the tropical tropopause layer [PDF]
Atmospheric Chemistry and Physics, 2018 Ozonesondes reaching the tropical tropopause layer (TTL) over the west Pacific have occasionally measured layers of very low ozone concentrations – less than 15 ppbv – raising the question of how prevalent such layers are and how they are formed.
R. Newton +8 more
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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
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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
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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
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Tropical Cyclone Research and Review, 2020 The characteristics of convective-scale downdrafts in the outer core of tropical cyclones in the lower- and upper-layer vertical wind shear (VWS) are investigated based on two high-resolution idealized numerical experiments.
Jingjing Cheng, Qingqing Li
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The Tropical Tropopause Layer 1960–2100 [PDF]
Atmospheric Chemistry and Physics, 2009 The representation of the Tropical Tropopause Layer (TTL) in 13 different Chemistry Climate Models (CCMs) designed to represent the stratosphere is analyzed. Simulations for 1960–2005 and 1980–2100 are analyzed.
A. Gettelman +17 more
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Radio occultation bending angle anomalies during tropical cyclones [PDF]
Atmospheric Measurement Techniques, 2011 The tropical deep convection affects the radiation balance of the atmosphere changing the water vapor mixing ratio and the temperature of the upper troposphere lower stratosphere.
R. Biondi +3 more
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Remote Sensing, 2022 Based on reanalysis data, satellite ozone concentration observations, and a Lagrangian trajectory simulation, a Rossby wave breaking (RWB) event and its effect on stratosphere–troposphere exchange (STE) over the Tibetan Plateau in mid-March 2006 were ...
Jinyao Zhu +3 more
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The influence of the Asian summer monsoon on volcanic aerosol transport in the UTLS region
npj Climate and Atmospheric Science, 2023 This study analyses the influence of the Asian summer monsoon on volcanic aerosol transport. Realistic, altitude-resolved SO2 emissions of a middle-latitude volcanic eruption (Sarychev 2009) and a tropical volcanic eruption (Nabro 2011) were retrieved ...
Xue Wu +7 more
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Linking uncertainty in simulated Arctic ozone loss to uncertainties in modelled tropical stratospheric water vapour [PDF]
Atmospheric Chemistry and Physics, 2018 Stratospheric water vapour influences the chemical ozone loss in the polar stratosphere via control of the polar stratospheric cloud formation. The amount of water vapour entering the stratosphere through the tropical tropopause differs substantially ...
L. Thölix +3 more
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