Results 81 to 90 of about 45,560 (227)

A Stratospheric Intrusion-Influenced Ozone Pollution Episode Associated with an Intense Horizontal-Trough Event

open access: yesAtmosphere, 2020
Ozone pollution is currently a serious issue in China. As an important source of tropospheric ozone, the stratospheric ozone has received less concern. This study uses a combination of ground-based ozone measurements, the latest ERA5 reanalysis data as ...
Yiping Wang, Hongyue Wang, Wuke Wang
doaj   +1 more source

Midlatitude ClO during the maximum atmospheric chlorine burden : in situ balloon measurements and model simulations [PDF]

open access: yes, 2005
Chlorine monoxide (ClO) plays a key role in stratospheric ozone loss processes at midlatitudes. We present two balloonborne in situ measurements of ClO conducted in northern hemisphere midlatitudes during the period of the maximum of total inorganic ...
Engel, Andreas   +6 more
core   +4 more sources

Hierarchical Testing of a Hybrid Machine Learning‐Physics Global Atmosphere Model

open access: yesAGU Advances, Volume 7, Issue 2, April 2026.
Abstract Machine learning (ML)‐based models have demonstrated high skill and computational efficiency, often outperforming conventional physics‐based models in weather and subseasonal predictions. While prior studies have assessed their fidelity in capturing synoptic‐scale atmospheric dynamics, their performance across timescales and under out‐of ...
Ziming Chen   +11 more
wiley   +1 more source

Modeled and Observed Stratospheric Temperature Changes: Implications for Fingerprint Studies

open access: yesAGU Advances, Volume 7, Issue 2, April 2026.
Abstract Changes in the vertical structure of atmospheric temperature are an important “fingerprint” of human effects on global climate. These changes are mainly driven by human‐caused increases in atmospheric levels of CO2 ${\text{CO}}_{2}$ and other well‐mixed greenhouse gases.
Benjamin D. Santer   +3 more
wiley   +1 more source

Polar ozone [PDF]

open access: yes
The observation and interpretation of a large, unexpected ozone depletion over Antarctica has changed the international scientific view of stratospheric chemistry.
Grose, W. L.   +9 more
core   +1 more source

Diagnostics of the tropical tropopause layer from in-situ observations and CCM data [PDF]

open access: yes, 2009
A suite of diagnostics is applied to in-situ aircraft measurements and one Chemistry-Climate Model (CCM) data to characterize the vertical structure of the Tropical Tropopause Layer (TTL).
Cagnazzo, Chiara   +9 more
core  

Reconciliation of essential process parameters for an enhanced predictability of Arctic stratospheric ozone loss and its climate interactions [PDF]

open access: yes, 2012
Significant reductions in stratospheric ozone occur inside the polar vortices each spring when chlorine radicals produced by heterogeneous reactions on cold particle surfaces in winter destroy ozone mainly in two catalytic cycles, the ClO dimer cycle and
Bekki, Slimane   +85 more
core   +1 more source

Snow‐Covered Insights From Above and Below: High‐Frequency Measurement of Nitrogen Dioxide From Space and Ground

open access: yesGeophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract The Tropospheric Emissions: Monitoring of Pollution (TEMPO) satellite provides hourly air quality measurements over North America. This study evaluates TEMPO NO2 ${\text{NO}}_{2}$ observations over snow‐covered surfaces, highlighting its ability to capture sharp spatial and temporal gradients in NO2 ${\text{NO}}_{2}$ vertical column densities ...
D. Griffin   +12 more
wiley   +1 more source

Analysis of satellite-derived Arctic tropospheric BrO columns in conjunction with aircraft measurements during ARCTAS and ARCPAC [PDF]

open access: yes, 2012
We derive tropospheric column BrO during the ARCTAS and ARCPAC field campaigns in spring 2008 using retrievals of total column BrO from the satellite UV nadir sensors OMI and GOME-2 using a radiative transfer model and stratospheric column BrO from a ...
Canty, T   +21 more
core   +1 more source

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